CN103457520A - Motor system with a relay disconnecting start winding at voltage threshold - Google Patents
Motor system with a relay disconnecting start winding at voltage threshold Download PDFInfo
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- CN103457520A CN103457520A CN2013102115293A CN201310211529A CN103457520A CN 103457520 A CN103457520 A CN 103457520A CN 2013102115293 A CN2013102115293 A CN 2013102115293A CN 201310211529 A CN201310211529 A CN 201310211529A CN 103457520 A CN103457520 A CN 103457520A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/42—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor
- H02P1/44—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor by phase-splitting with a capacitor
- H02P1/445—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor by phase-splitting with a capacitor by using additional capacitors switched at start up
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/42—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/04—Single phase motors, e.g. capacitor motors
Abstract
The invention relates to a motor system with a relay disconnecting the start winding at a voltage threshold. An AC single phase motor-system comprises a rotor driven by a main winding and an auxiliary winding powered through a start capacitor Cs for driving the rotor during start-up. A potential relay controls a relay-switch which deactivates the start capacitor Cs when a control voltage across the relay exceeds a threshold. The relay-switch is located so that when the start capacitor Cs is connected, the control voltage depends on the voltage across the auxiliary winding, and when the capacitor Cs is disconnected, the control voltage is independent of the voltage across the auxiliary winding. The invention also provides a relay of a compressor motor and a method of controlling the compressor motor.
Description
Technical field
The present invention relates to a kind of AC electric system.The invention particularly relates to a kind of AC monophase machine system with rotor, described rotor is driven so that it can supply with power supply by Monophase electric power by the main winding be connected between phase wire connections and zero line connector.
Electric system involved in the present invention also comprises auxiliary winding, and described auxiliary winding provides moment of torsion under zero velocity, for the starter motor parts.Auxiliary winding is powered via start-up capacitance, and its phase shift that Monophase electric power supply is provided is to generate moment of torsion.
Voltage relay control relay switch, when therefore the motor component operation also no longer needs starting torque, described relay switch stops start-up capacitance.Voltage relay, according to change the configuration of relay switch across the control voltage of relay, disconnects or the closing relay switch.
When controlling voltage over threshold value, relay relay switch and start-up capacitance are disconnected.
The present invention also relates in particular to a kind of a kind of electric system and method that starts this electric system of the compressor for refrigeration application.
Background technology
Fig. 1 roughly illustrates compressor electric motor well known in the prior art.The voltage of voltage relay 6 based on across auxiliary winding carrys out control relay switch 7 and enables thus or inactive start-up capacitance CS and/or auxiliary winding 5.
When electric power is supplied to motor at first, low across the voltage of auxiliary winding, so voltage relay be in non-initiate mode and thereby be relay switch configuration conducting, closed, as shown in Figure 1.In this relay configuration, auxiliary winding connects via start-up capacitance and starting torque is provided.
As shown in Figure 2, when speed increases (abscissa), across voltage (ordinate) increase of auxiliary winding.When voltage arrives the disconnection threshold value, voltage relay moves to relay switch configuration non-conduction, open circuit by relay switch.This has disconnected start-up capacitance CS, in the situation that be not activated the operation that electric capacity continues motor, auxiliary winding drives by operation capacitor C R, or, in the motor that does not move electric capacity, auxiliary winding is disconnected simply.
POL place after startup, operation electric capacity improves the efficiency of motor, and this is the reason of using operation electric capacity.The operation electric capacity normally start-up capacitance 1/5th to 1/10th.
By definition herein, we will " enable " at following use term the activity that the control relay switch moves to the relay of the position that causes start-up capacitance to disconnect of describing, and use term " to stop using " to describe the control relay switch to move to the activity of relay of the position of the connection that causes start-up capacitance.
For the reason of stability and for fear of enabling repeatedly and stopping using, relay is designed to have hysteresis, and thus, that controls voltage enables current potential higher than the inactive current potential of controlling voltage.Four arrows being connected and forming closed-loop path of hysteresis in Fig. 3 of controlling voltage illustrate.
If motor overload, if the i.e. load of motor, higher than ultimate torque (breakdown torque or breakaway torque), will drop to below the inactive control voltage of relay and make start-up capacitance be connected across the voltage of auxiliary winding.The point arrow made progress under this low speed in Fig. 3 illustrates.
Resetting of start-up capacitance provides the moment of torsion increased to overcome described load.Therefore, motor speed increase and therefore increase across the voltage of auxiliary winding until arrive control voltage enable current potential and therefore start-up capacitance disconnects.This order repeats self, and the mechanical load that relay will depend on motor is enabled repeatedly and stops using, for example, with the frequency in the scope of 1Hz.
Due to enabling and stopping using repeatedly, auxiliary winding and start-up capacitance become under overload situations and can turn round.Typically, motor is not designed to obtain the power of this increase on the longer time period, and electrical system becomes overload.Especially, motor winding and cable etc. are in by the excessive risk that heating damaged.
Summary of the invention
One of purpose of embodiments of the invention is to provide the electric system that comprises electric power system and motor component and, for the independently electric power system of motor component, they have avoided the above-mentioned defect of repeatedly enabling and stopping using of relay.
According to first aspect, this purpose is realized by an electric system, in described electric system, relay is located so that with respect to relay switch relay switch controlling voltage in the motion between closure and open-loop configuration and depending on across the state of the voltage of auxiliary winding and control voltage and do not rely between the state across the voltage of auxiliary winding and change.
Because the closure of relay switch is independent of the voltage across auxiliary winding, thus the spinner velocity (RPM) that voltage is independent of electric system controlled, so the heavy duty of electric system or heavy load do not affect the motion of relay switch.So relay switch keeps open-loop configuration until electric system is closed fully, the above-mentioned defect of repeatedly enabling and stopping using of relay is avoided.
In practice, start-up capacitance can be between phase wire connections and first node, and auxiliary winding can be between Section Point and zero line connector, and relay switch can be between first node and Section Point.By this way, relay switch can be conducting to Section Point by electric current from first node in closed configuration, and preventing the conducting between first node and Section Point in open-loop configuration, this will provide following characteristics: the motion of relay switch depends on across the state of the voltage of auxiliary winding and controls voltage and do not rely between the state across the voltage of auxiliary winding and change controlling voltage.
Relay can be inserted between first node and zero line connector, so that when relay switch is in open-circuit condition, relay switch separates relay with auxiliary winding thus effectively.
At this, term " node " has covered any tie point between two entities or electric component of further stipulating as in the claims, that is, the node between two entities or electric component is cable, wire or the electric conductor that connects described two entities simply.
Especially, electric system can be for the drive compression machine.At this, term " compressor electric motor " has covered the motor for the compressor of any kind, for example the compressor in refrigerating system.Electric system also can be for other purposes.
At this, the voltage of term " control voltage " Coverage Control relay.Control voltage and threshold, and depend on that to control voltage be higher than threshold value or lower than threshold value, relay switch moves to open circuit or closed configuration by relay, that is, controlling voltage is the voltage across relay.
Relay can be the electromechanical relay with the armature moved by the magnetic field from coil.Once voltage arrives threshold value, magnetic field is enough to mobile this armature also so mobile relay switch, or relay can be electronic relay.
Typically, electric system will comprise two parallel circuit, i.e. main circuit and secondary circuit.Described circuit extends concurrently between phase wire connections and zero line connector.
Main circuit comprises for drive the main winding of rotor in course of normal operation.Secondary circuit is included in the start-up capacitance CS between phase wire connections and above-mentioned first node, the relay switch between first node and Section Point and for drive the auxiliary winding of rotor in start-up course.Auxiliary winding is between Section Point and zero line connector.
At first, before electric system is connected, in system, the voltage of any position is zero, and correspondingly, relay is deactivated, and relay switch is in the close position.When electric system is connected, the voltage on auxiliary winding increases by the RPM that increases electric system, and due to closed relay switch, the control voltage on relay is in fact corresponding to the voltage on auxiliary winding.When the voltage on auxiliary winding arrives threshold value, relay is enabled and relay switch, and relay separates with auxiliary winding thus, and therefore controlling voltage is no longer dependent on the voltage across auxiliary winding.In order to ensure stable transfer relay switch, electric system can comprise rectifier, and described rectifier will be described in further detail hereinafter.This rectifier will provide the one-way conduction from auxiliary winding to relay, due to this one-way conduction, control voltage and will on the half period of AC signal, depend on the voltage on auxiliary winding, and do not rely on the voltage on auxiliary winding on second half cycle of AC signal.
In addition, electric system can comprise the operation electric capacity between Section Point and phase wire connections.
PTC can be inserted between Section Point and first node, in parallel with relay switch.Thus, PTC forms the voltage divider of relay.
When electric system starts, relay switch is closed, so PTC is bypassed.Correspondingly, as long as the relay switch closure, PTC just keeps no power or does not generate heat.
Along with electric system accelerates until nominal speed, across the voltage of auxiliary winding, increase until this voltage arrives the high potential of the stable state under nominal speed.At this moment, the relay relay switch, the PTC of energising has not taken over the conducting to auxiliary winding yet.Therefore, even relay switch is disconnected, voltage relay also can be supplied with the high voltage from parafacies constantly.Due to the current On current of PTC, so it starts heating, after several seconds, it changes over the high-ohmic resistance pattern.This will finish in fact the conducting by PTC.
Due to PTC, auxiliary winding was increased by the duration of start-up capacitance power supply, and this PTC provides the delay with the disconnection of start-up capacitance.When PTC heats up, resistance increases and PTC no longer is connected to auxiliary winding by start-up capacitance.
In addition, electric system can comprise discharge cock, and described discharge cock is in the situation that electric current is excessive and so inactive motor component of excess Temperature.If electric system comprises interior discharge cock, PTC becomes no power or no longer heating when discharge cock is activated.Thus, PTC provides electric power for auxiliary winding no matter whether relay switch still disconnects.PTC can depend on its temperature for example to be changed being less than the resistance of 10 ohm and being greater than between the resistance of 50000 ohm.
The common overload by electric system of enabling of discharge cock causes.When this overload occurs, relay switch will normally disconnect, and due to separating of the present invention and relay and winding, relay switch will remain open, and electric system can not generate starting torque via start-up capacitance.Yet, when discharge cock disconnects, do not have electric current will flow through PTC, so PTC is by cooling.
When discharge cock disconnects, PTC becomes cold or temperature is low.When discharge cock is again closed, parafacies can be by start-up capacitance by being cold PTC power supply at present.The instantaneous pressure drop that this will be formed on the 3rd Nodes, reset relay.Thus, electric system is prepared normally to be started via the connection between start-up capacitance and the auxiliary winding on closed relay switch.
Electric system can also comprise the bleeder resistor between first node and phase wire connections.Due to this bleeder resistor, start-up capacitance discharges, and the life-span of electric capacity can be increased.
Electric bridge with first rectifier can be provided in the one-way conduction the direction from Section Point to relay.
Bleeder resistor can be between first node and phase wire connections.Bleeder resistor is the start-up capacitance electric discharge when start-up capacitance does not connect.Have that to be greater than 10000 ohm or the resistor that even is greater than the resistance of 80000 ohm can be suitable.
In another embodiment or additionally, electric system can be included in the resistor extended between phase wire connections and the 3rd node, described the 3rd node is between the first rectifier and relay.Resistor can be the form of PTC, and this PTC will become high ohm when it heats up, and stop in fact thus the conducting of resistor.
Voltage relay can be the type that comprises armature, and this armature is mechanically moved by means of the magnetic field provided by coil.
Especially, electric system can be formed for the building block of the compressor of refrigerating system.
In second aspect, the invention provides a kind of electric power system that is used to motor component power supply (for example being used to form compressor electric motor).Electric power system for motor component be the kind with rotor, described rotor adapts to by the zero line connector be connected to for motor component being connected to the Monophase electric power supply and drives with the main winding between the phase wire connections, and the help adapted to by auxiliary winding starts, described auxiliary winding is via the start-up capacitance power supply that the single-phase phase shift of supplying with from electric power is provided, described electric power system comprises voltage relay, described voltage relay is for controlling the relay switch that can be connected to motor component, the auxiliary winding of motor component so that it stops using when the control voltage across relay surpasses threshold value, its repeat circuit is located with respect to relay switch, depend on across the state of the voltage of the auxiliary winding of connected motor component and control voltage and do not rely between the state across the voltage of auxiliary winding and change so that relay switch is controlled voltage switching between closed configuration and open-loop configuration.
In the third aspect, the invention provides a kind of method of controlling monophase machine, this monophase machine is for example the compressor electric motor for refrigerating system, this monophase machine has rotor, described rotor adapts to zero line connector and the driving of the main winding between the phase wire connections of supplying with for motor being connected to Monophase electric power by being connected to, and the help adapted to by auxiliary winding starts, described auxiliary winding is via the start-up capacitance power supply that the single-phase phase shift of supplying with from electric power is provided, described method comprises the step based on controlling control voltage between node mobile relay switch the start-up capacitance of stopping using thus between closed configuration and open-loop configuration, wherein relay switch is arranged with respect to controlling node, depend on across the state of the voltage of auxiliary winding and control voltage and do not rely between the state across the voltage of auxiliary winding and change so that relay switch is controlled voltage switching between closed configuration and open-loop configuration.
The accompanying drawing explanation
Hereinafter, embodiments of the invention will be described by means of example and with reference to accompanying drawing, in described accompanying drawing:
Fig. 1 illustrates the view of the monophase machine of prior art;
Fig. 2 illustrates the chart as the function of spinner velocity (RPM) across the voltage of parafacies;
Fig. 3 illustrates the chart of moment of torsion as the function of spinner velocity (RPM);
Fig. 4 illustrates the view according to electric system of the present invention; With
Fig. 5-7 illustrate the view of alternate embodiment of the present invention.
Embodiment
The other scope of application of the present invention will become apparent from the following detailed description and concrete example.Yet, should be appreciated that this detailed description and concrete example are only that mode with example provides, it has shown the preferred embodiments of the present invention, because those skilled in the art will describe various changes and the modification of understanding within the scope of the invention in detail according to this.
Fig. 1 illustrates the view of the single-phase AC asynchronous machine 1 with voltage relay.This motor exists.This motor utilizes phase wire connections 2 and zero line connector 3 to be connected to AC electric power and supplies with.Motor comprises main winding 4, auxiliary winding 5, operation capacitor C R, start-up capacitance CS and voltage relay 6, the connection start-up capacitance of described voltage relay 6 control relay switches 7 or do not connect the state of start-up capacitance.Relay 6 is inserted between the opposite side of auxiliary winding 5, and therefore the voltage based on across this winding carrys out the control relay switch.Bleeder resistor BR reduce electromotive force between operation electric capacity and start-up capacitance and thus protection relay switch 7 to avoid excessive electric current and voltage.In the situation that excessive heating, the electric current of protector 8 based in auxiliary winding and main winding and disconnecting, and disconnect the connection of motor.
Fig. 4 illustrates according to electric system 12 of the present invention.Electric system comprises the rotor (not shown), and described rotor is driven by the phase wire connections 2 that is connected to the electric power supply and the main winding between zero line connector 34.Auxiliary winding 5 is powered via start-up capacitance CS, and drives rotor in start-up course.Voltage relay 6 carrys out control relay switch 7 based on controlling voltage, and described control voltage is the voltage between node 10 and zero line connector 3 at this.
In start-up course, when relay switch 7 is closed (as shown in Figure 4), depend on the voltage across auxiliary winding across the voltage of relay 6, therefore, when the control voltage across relay surpasses threshold value and therefore across the voltage of auxiliary winding, surpasses threshold value, the relay start-up capacitance of can stopping using.
Once the arrival threshold value, the relay relay switch, start-up capacitance is deactivated.By this step, relay switch also separates auxiliary winding 5 with relay 6, and the voltage of relay based between node 10 and zero line connector 3 operates, and this voltage does not rely on the voltage across auxiliary winding between node 11 and zero line connector 3.Correspondingly, when auxiliary winding is deactivated, controls voltage and do not rely on the voltage across auxiliary winding.
In embodiment as shown in Figure 4, start-up capacitance is between phase wire connections 2 and first node 10, auxiliary winding 5 between Section Point 11 and zero line connector 3, and relay switch 7 between first node 10 and Section Point 11 so that the current lead-through of electric current between first node 10 and Section Point 11 depends on the configuration of relay switch.The relay 6 of the motion of control relay switch 7 is inserted between first node 10 and zero line connector 3, becomes the optional bridge of unilateral diode 9 forms that 6 one-way conduction is provided from Section Point 11 to relay.
Additionally, operation electric capacity (not shown) can be inserted between phase wire connections 2 and Section Point 11.
Fig. 5 is schematically illustrated according to optional electric system 13 of the present invention.In this embodiment, relay 6 for example, is connected to phase wire connections 2 via the parts that Ohmic resistance is provided that extend between phase wire connections 2 and the 3rd node 15 (resistor 14 or PTC or parallel PTC and the resistor coupled), so that relay 6 can not be subject to work under the voltage across the voltage influence of auxiliary winding when relay switch 7 disconnection the time.When relay switch 7 is closed, as shown in Figure 5, relay will be worked under the voltage across auxiliary winding 5.In addition, operation electric capacity (not shown) can be inserted between phase wire connections 2 and Section Point 11.
Fig. 6 is schematically illustrated according to optional electric system 16 of the present invention.In this embodiment, relay 6 is connected to phase wire connections 2 via the resistor 14 that extends (in parallel with start-up capacitance CS) between phase wire connections 2 and first node 10.Additionally, operation electric capacity (not shown) can be inserted between phase wire connections 2 and Section Point 11.
Fig. 7 is schematically illustrated according to optional electric system 19 of the present invention.In this embodiment, PTC20 is inserted between first node 10 and Section Point 11.Thus, PTC forms the voltage divider of relay.
This electric system comprises interior discharge cock 8, and described interior discharge cock 8 is in the situation that electric current is excessive and so inactive motor component of excess Temperature.In this case, when discharge cock is enabled, when discharge cock has disconnection, non-conduction contact, PTC becomes cold or does not generate heat.Thus, once discharge cock is again closed, PTC provides electric power to auxiliary winding.When this occurs, PTC, due to its function as voltage divider, will guarantee to reduce at the voltage at node 11 places, and relay can be deactivated thus, relay switch 7 closures thus, and motor can normally start.
Additionally, operation electric capacity (not shown) can be inserted between phase wire connections 2 and Section Point 11, and bleeder resistor can be inserted between first node 10 and phase wire connections 2.
Claims (13)
1. an AC monophase machine system (12, 13, 16, 19), comprise rotor, described rotor adapts to zero line connector (3) and the driving of the main winding (4) between phase wire connections (2) of supplying with for described AC monophase machine system being connected to Monophase electric power by being connected to, described AC monophase machine system also comprises for drive the auxiliary winding (5) of rotor in start-up course, described auxiliary winding (5) is powered via start-up capacitance (CS), described start-up capacitance provides the single-phase phase shift of supplying with from electric power, described AC monophase machine system also comprises voltage relay (6), described voltage relay (6) is for control relay switch (7), described relay switch (7) is controlling voltage to while reaching threshold value the start-up capacitance (CS) of stopping using, its repeat circuit (6) is located with respect to relay switch (7), depend between the state do not relied on across the state of the voltage of auxiliary winding (5) and control voltage across the voltage of auxiliary winding (5) and change so that relay switch is being controlled voltage in the motion between closed configuration and open-loop configuration.
2. AC monophase machine system according to claim 1, wherein said start-up capacitance (CS) is positioned between phase wire connections (2) and first node (10), described auxiliary winding (5) is positioned between Section Point (11) and zero line connector (3), and relay switch (7) is arranged between first node (10) and Section Point (11) in order in closed configuration, electric current is prevented to the conducting between first node (10) and Section Point (11) from first node (10) to Section Point (11) conducting with in open-loop configuration.
3. AC monophase machine system according to claim 2, wherein said relay (6) is inserted between first node (10) and zero line connector (3).
4. according to the described electric system of claim 2 or 3, also comprise the bridge with the first rectifier (9), the one-way conduction of described rectifier being provided at from Section Point (11) to the direction of relay (6).
5. according to AC monophase machine system in any one of the preceding claims wherein, also comprise the parts that are provided at the Ohmic resistance extended between phase wire connections (2) and the 3rd node (15), described the 3rd node is positioned between the first rectifier (9) and relay (6).
6. according to AC monophase machine system in any one of the preceding claims wherein, also comprise the PTC (20) be positioned between Section Point (11) and first node (10).
7. AC monophase machine system according to claim 6, wherein said PTC depends on its temperature to be changed at the resistance lower than 10 ohm with between higher than the resistance of 50000 ohm.
8. according to AC monophase machine system in any one of the preceding claims wherein, also comprise the resistor (14) between first node and phase wire connections.
9. AC monophase machine system according to claim 8, wherein said resistor (14) has the resistance higher than 10000 ohm.
10. according to AC monophase machine system in any one of the preceding claims wherein, wherein said voltage relay comprises armature, and described armature carries out Mechanical Moving by means of the magnetic field provided by coil.
11., according to AC monophase machine system in any one of the preceding claims wherein, described AC monophase machine system is formed for the part of the compressor of refrigerating system.
A 12. electric power system that is used to the motor component power supply, described motor component comprises rotor, described rotor adapts to by the zero line connector be connected to for motor component being connected to the Monophase electric power supply and drives with the main winding between the phase wire connections, and the help adapted to by auxiliary winding starts, described auxiliary winding is via the start-up capacitance power supply that the single-phase phase shift of supplying with from electric power is provided, described electric power system comprises voltage relay, described voltage relay is for controlling the relay switch that can be connected to motor component, the start-up capacitance so that it stops using when the control voltage across relay surpasses threshold value, its repeat circuit is located with respect to relay switch, depend on across the state of the voltage of the auxiliary winding of connected motor component and control voltage and do not rely between the state across the voltage of auxiliary winding and change so that relay switch is controlled voltage switching between closed configuration and open-loop configuration.
A 13. method of controlling monophase machine, described monophase machine has rotor, described rotor adapts to zero line connector and the driving of the main winding between the phase wire connections of supplying with for motor being connected to Monophase electric power by being connected to, and the help adapted to by auxiliary winding starts, described auxiliary winding is via the start-up capacitance power supply that the single-phase phase shift of supplying with from electric power is provided, described method comprises the step based on controlling control voltage between node transfer relay switch the start-up capacitance of stopping using thus between closed configuration and open-loop configuration, wherein relay switch is arranged with respect to controlling node, depend on across the state of the voltage of auxiliary winding and control voltage and do not rely between the state across the voltage of auxiliary winding and change so that relay switch is controlled voltage switching between closed configuration and open-loop configuration.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA201200380 | 2012-06-04 | ||
| DKPA201200380 | 2012-06-04 |
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| Publication Number | Publication Date |
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| CN103457520A true CN103457520A (en) | 2013-12-18 |
| CN103457520B CN103457520B (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310211529.3A Active CN103457520B (en) | 2012-06-04 | 2013-05-31 | There is the electric system of electric power system and be used to the electric power system of motor component power supply |
Country Status (2)
| Country | Link |
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| CN (1) | CN103457520B (en) |
| GB (1) | GB2504577A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105048882A (en) * | 2015-08-20 | 2015-11-11 | 佛山市威灵洗涤电机制造有限公司 | Motor starting circuit, motor, and motor starting method |
| CN105337533A (en) * | 2015-12-09 | 2016-02-17 | 华意压缩机股份有限公司 | Method for starting freezer compressor without power consumption |
| CN107070369A (en) * | 2017-04-26 | 2017-08-18 | 广东美芝制冷设备有限公司 | For device, method and the air-conditioning of the second harmonic current for improving air-conditioning |
| CN107204710A (en) * | 2017-05-27 | 2017-09-26 | 西安拓锋机电科技有限公司 | Multifunctional power module, many power adapters and polymorphic type impulse generator |
| CN109001626A (en) * | 2017-05-22 | 2018-12-14 | 英飞凌科技股份有限公司 | Improved troubleshooting for alternating current generator control apparatus |
| CN110022738A (en) * | 2016-10-20 | 2019-07-16 | 维他拌管理有限公司 | The motor to slow down with induction type |
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Also Published As
| Publication number | Publication date |
|---|---|
| GB2504577A (en) | 2014-02-05 |
| GB201309480D0 (en) | 2013-07-10 |
| CN103457520B (en) | 2016-05-18 |
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