CN103956941A - Solid-state photo-electric soft starter - Google Patents
Solid-state photo-electric soft starter Download PDFInfo
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- CN103956941A CN103956941A CN201410218213.1A CN201410218213A CN103956941A CN 103956941 A CN103956941 A CN 103956941A CN 201410218213 A CN201410218213 A CN 201410218213A CN 103956941 A CN103956941 A CN 103956941A
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- thyristor
- vacuum switch
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Abstract
The invention relates to a solid-state photo-electric soft starter which comprises a thyristor circuit, a high-voltage switch group, a vacuum switch group A, a vacuum switch group B, a temperature sensor N, a trigger board, a signal processor, a voltage transformer C, a voltage transformer D, a voltage transformer E, a current transformer G, a current transformer H and a motor M. The voltage transformer C is connected with the voltage transformer D in series, the vacuum switch group A is connected with the high-voltage switch group, the vacuum switch group B, the thyristor circuit, a primary coil of the voltage transformer C and a primary coil of the voltage transformer D respectively, the thyristor circuit is connected with the trigger board, a primary coil of the current transformer G, a primary coil of the current transformer H, a primary coil of the voltage transformer E and the motor M respectively, and the vacuum switch group B is connected with the motor M. The solid-state soft starter is high in safety degree, convenient to adjust and control, convenient to transport, install and maintain, simple in technology and manufacturing, reliable in running and small in occupied space.
Description
Technical field
What the present invention relates to is a kind of solid-state photoelectricity soft starter.
Background technology
At present, high-voltage alternating soft starter has series reactor starting, the starting of liquid resistance formula, AC converter starting, be exactly the solid soft start of present just popular Single-chip Controlling thyristor conducting in addition, series reactor start mode, starting current is large, can not adjust, AC converter starting, it is a kind of efficient starting mode of speed regulation, starting performance is good, speed adjustable range is large, good energy-conserving effect, but expensive, technical sophistication, require quite high maintenance levels, discomfort is easily generally promoted, soft stepless control of device of liquid resistance, starting performance is good, cheap, but can not start continuously the short time, and liquid resistance box volume is large, occupied ground, need regular moisturizing, the inadaptable occasion of freezing or jolting, make transport difficulty is installed, use is limited to., although cost ratio frequency converter is low, there is technical sophistication in the solid soft start of Single-chip Controlling thyristor conducting, requires high maintenance levels equally.
Summary of the invention
For the deficiency existing in prior art, the invention provides a kind of degree of safety high, regulation and control convenience, convenient transportation, easy for installation, easy to maintenance, fabrication techniques is simple, reliable, little solid-state soft starter takes up room.
To achieve these goals, the present invention realizes by the following technical solutions:
The solid-state photoelectricity soft starter of one of the present invention, for actuating motor M, comprise thyristor circuit, high-voltage switch gear group, vacuum switch group A, vacuum switch group B, temperature sensor N, trigger board, signal processor, voltage transformer C, voltage transformer D, voltage transformer E, current transformer G, current transformer H, motor M and for detection of the temperature sensor N of thyristor circuit working temperature with for monitor current instrument transformer G, current transformer H, voltage transformer E, voltage transformer C, voltage transformer D, temperature sensor N numerical value also provides the signal processor of protection, voltage transformer C and voltage transformer D are connected in series, vacuum switch group A connects respectively high-voltage switch gear group, vacuum switch group B, thyristor circuit, the primary coil of voltage transformer C, the primary coil of voltage transformer D, thyristor circuit connects respectively trigger board, the primary coil of current transformer G, the primary coil of current transformer H, the primary coil of voltage transformer E, motor M, vacuum switch group B connects motor M, the secondary coil of voltage transformer C, the secondary coil of voltage transformer D, the secondary coil of voltage transformer E, the secondary coil of current transformer G, the secondary coil of current transformer H, temperature sensor N all connects signal processor, trigger board connects signal processor by optical fiber, high-voltage switch gear group connects respectively the primary coil of voltage transformer C, the primary coil of voltage transformer D, temperature sensor N is for detection of the working temperature of thyristor circuit 11.
The present invention also comprises several RC protective circuits, and RC protective circuit comprises resistance R, capacitor C a, and resistance R, capacitor C a are in series, and RC protective circuit connects thyristor circuit.
The present invention includes six RC protective circuits, thyristor circuit comprises thyristor A1, thyristor A2, thyristor A3, thyristor A4, thyristor A5, thyristor A6, thyristor B7, thyristor B8, thyristor B3, thyristor B4, thyristor B5, thyristor B6, the control utmost point of thyristor A1, the control utmost point of thyristor A2, the control utmost point of thyristor A3, the control utmost point of thyristor A4, the control utmost point of thyristor A5, the control utmost point of thyristor A6, the control utmost point of thyristor B7, the control utmost point of thyristor B8, the control utmost point of thyristor B3, the control utmost point of thyristor B4, the control utmost point of thyristor B5, the control of thyristor B6 extremely all connects trigger board, the negative electrode of the anodic bonding thyristor A2 of thyristor A1, the negative electrode of thyristor A1 connects the anode of thyristor A2, the negative electrode of the anodic bonding thyristor B4 of thyristor B3, the negative electrode of thyristor B3 connects the anode of thyristor B4, the negative electrode of thyristor A1 connects the anode of thyristor B3, and the negative electrode of thyristor B3 connects respectively the primary coil of current transformer G, vacuum switch group B, motor M, the negative electrode of the anodic bonding thyristor A4 of thyristor A3, the negative electrode of thyristor A3 connects the anode of thyristor A4, the negative electrode of the anodic bonding thyristor B6 of thyristor B5, the negative electrode of thyristor B5 connects the anode of thyristor B6, the negative electrode of thyristor A3 connects the anode of thyristor B5, and the negative electrode of thyristor B5 connects respectively the primary coil of current transformer G, vacuum switch group B, motor M, one end of the primary coil of voltage transformer E, the negative electrode of the anodic bonding thyristor A6 of thyristor A5, the negative electrode of thyristor A5 connects the anode of thyristor A6, the negative electrode of the anodic bonding thyristor B8 of thyristor B7, the negative electrode of thyristor B8 connects the anode of thyristor B7, the negative electrode of thyristor A5 connects the anode of thyristor B7, and the negative electrode of thyristor B7 connects respectively the other end of the primary coil of voltage transformer E, vacuum switch group B, motor M, the anode of thyristor A1, the anode of thyristor A3, the anode of thyristor A5 all connects vacuum switch group A, between the anode of thyristor A1 and negative electrode, connect RC protective circuit, between the anode of thyristor A3 and negative electrode, connect RC protective circuit, between the anode of thyristor A5 and negative electrode, connect RC protective circuit, between the anode of thyristor B3 and negative electrode, connect RC protective circuit, between the anode of thyristor B5 and negative electrode, connect RC protective circuit, between the anode of thyristor B7 and negative electrode, connect RC protective circuit.
Vacuum switch group A of the present invention comprises vacuum switch K1, vacuum switch K2, vacuum switch K3, vacuum switch group B comprises vacuum switch M1, vacuum switch M2, vacuum switch M3, the anodic bonding vacuum switch K1 of thyristor A1, the anodic bonding vacuum switch K2 of thyristor A3, the anodic bonding vacuum switch K3 of thyristor A5, the negative electrode of thyristor B3 connects vacuum switch M1, the negative electrode of thyristor B5 connects vacuum switch M2, the negative electrode of thyristor B7 connects vacuum switch M3, vacuum switch K1 connects vacuum switch M1, one end of the primary coil of voltage transformer C, vacuum switch K2 connects respectively vacuum switch M2, the other end of the primary coil of voltage transformer C, one end of the primary coil of voltage transformer D, vacuum switch K3 connects vacuum switch M3, the other end of the primary coil of voltage transformer D.
High-voltage switch gear group of the present invention comprises high-voltage switch gear Q1, high-voltage switch gear Q2, high-voltage switch gear Q3, and high-voltage switch gear Q1 connects vacuum switch K1, and high-voltage switch gear Q2 connects vacuum switch K2, and high-voltage switch gear Q3 meets vacuum switch K3.
Beneficial effect of the present invention: the present invention is provided with current transformer G, current transformer H, voltage transformer E detects motor voltage, electric current, play overvoltage protection and overcurrent protection, if be short-circuited between motor turn-to-turn, alternate or circuit or electric current exceedes set point, controller sends signal, and tripping operation, reliable, safety; Circuit structure of the present invention is simple, and volume is little, therefore convenient transportation, easy for installation, easy to maintenance; In starting or running; utilize temperature sensor to detect the working temperature of thyristor; if while finding that the temperature of thyristor exceedes set point; controller sends locking signal thing; and trip protection; operation very reliably, very safe, RC protective circuit of the present invention has been protected thyristor circuit, the security performance that improved system.
Brief description of the drawings
Describe the present invention in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is system block diagram of the present invention;
Fig. 2 is the circuit theory diagrams of thyristor circuit of the present invention;
Fig. 3 is circuit theory diagrams of the present invention.
embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with embodiment, further set forth the present invention.
As Fig. 1, Fig. 2, shown in Fig. 3, the solid-state photoelectricity soft starter of one of the present invention, for actuating motor M14, comprise thyristor circuit 11, high-voltage switch gear group 15, vacuum switch group A12, vacuum switch group B13, temperature sensor N2, trigger board 4, signal processor 1, voltage transformer C7, voltage transformer D8, voltage transformer E6, current transformer G10, current transformer H9, motor M14, voltage transformer C7 and voltage transformer D8 are connected in series, vacuum switch group A12 connects respectively high-voltage switch gear group 15, vacuum switch group B13, thyristor circuit 11, the primary coil of voltage transformer C7, the primary coil of voltage transformer D8.
Thyristor circuit 11 connects respectively primary coil, the primary coil of current transformer H9, the primary coil of voltage transformer E6, the motor M14 of trigger board 4, current transformer G10, vacuum switch group B13 connects motor M14, and the secondary coil of the secondary coil of voltage transformer C7, the secondary coil of voltage transformer D8, voltage transformer E6, the secondary coil of current transformer G10, the secondary coil of current transformer H9, temperature sensor N2 all connect signal processor 1.Trigger board 4 connects signal processor 1 by optical fiber, and high-voltage switch gear group 15 connects respectively the primary coil of voltage transformer C7, the primary coil of voltage transformer D8, and temperature sensor N is for detection of the working temperature of thyristor circuit 11.
The present embodiment also comprises six RC protective circuits, and RC protective circuit comprises resistance R, capacitor C a, described resistance R, capacitor C a is in series, and RC protective circuit connects thyristor circuit 11, and thyristor circuit 11 comprises thyristor A1, thyristor A2, thyristor A3, thyristor A4, thyristor A5, thyristor A6, thyristor B7, thyristor B8, thyristor B3, thyristor B4, thyristor B5, thyristor B6, the control utmost point of thyristor A1, the control utmost point of thyristor A2, the control utmost point of thyristor A3, the control utmost point of thyristor A4, the control utmost point of thyristor A5, the control utmost point of thyristor A6, the control utmost point of thyristor B7, the control utmost point of thyristor B8, the control utmost point of thyristor B3, the control utmost point of thyristor B4, the control utmost point of thyristor B5, the control of thyristor B6 extremely all connects trigger board 4, the negative electrode of the anodic bonding thyristor A2 of thyristor A1, the negative electrode of thyristor A1 connects the anode of thyristor A2, the negative electrode of the anodic bonding thyristor B4 of thyristor B3, the negative electrode of thyristor B3 connects the anode of thyristor B4, and the negative electrode of thyristor A1 connects the anode of thyristor B3.The negative electrode of this thyristor B3 connects respectively primary coil 10, vacuum switch group B13, the motor M14 of current transformer G, the negative electrode of the anodic bonding thyristor A4 of thyristor A3, the negative electrode of thyristor A3 connects the anode of thyristor A4, the negative electrode of the anodic bonding thyristor B6 of thyristor B5, the negative electrode of thyristor B5 connects the anode of thyristor B6, the negative electrode of thyristor A3 connects the anode of thyristor B5, and the negative electrode of thyristor B5 connects respectively one end of the primary coil of primary coil, vacuum switch group B13, motor M14, the voltage transformer E6 of current transformer G10; The negative electrode of the anodic bonding thyristor A6 of thyristor A5, the negative electrode of thyristor A5 connects the anode of thyristor A6, the negative electrode of the anodic bonding thyristor B8 of thyristor B7.
The negative electrode of the thyristor B8 of the present embodiment connects the anode of thyristor B7, the negative electrode of thyristor A5 connects the anode of thyristor B7, the negative electrode of thyristor B7 connects respectively the other end, vacuum switch group B13, the motor M14 of the primary coil of voltage transformer E6, and the anode of the anode of thyristor A1, the anode of thyristor A3, thyristor A5 all connects vacuum switch group A12.Between the anode of thyristor A1 and negative electrode, connect RC protective circuit; between the anode of thyristor A3 and negative electrode, connect RC protective circuit; between the anode of thyristor A5 and negative electrode, connect RC protective circuit; between the anode of thyristor B3 and negative electrode, connect RC protective circuit; between the anode of thyristor B5 and negative electrode, connect RC protective circuit, between the anode of thyristor B7 and negative electrode, connect RC protective circuit.
It should be noted that, vacuum switch group A12 comprises vacuum switch K1, vacuum switch K2, vacuum switch K3, vacuum switch group B13 comprises vacuum switch M1, vacuum switch M2, vacuum switch M3, the anodic bonding vacuum switch K1 of thyristor A1, the anodic bonding vacuum switch K2 of thyristor A3, the anodic bonding vacuum switch K3 of thyristor A5, the negative electrode of thyristor B3 connects vacuum switch M1, the negative electrode of thyristor B5 connects vacuum switch M2, the negative electrode of thyristor B7 connects vacuum switch M3, vacuum switch K1 connects vacuum switch M1, one end of the primary coil of voltage transformer C7, vacuum switch K2 connects respectively vacuum switch M2, the other end of the primary coil of voltage transformer C7, one end of the primary coil of voltage transformer D8, vacuum switch K3 connects vacuum switch M3, the other end of the primary coil of voltage transformer D8, high-voltage switch gear group 15 comprises high-voltage switch gear Q1, high-voltage switch gear Q2, high-voltage switch gear Q3, high-voltage switch gear Q1 connects vacuum switch K1, high-voltage switch gear Q2 connects vacuum switch K2, high-voltage switch gear Q3 connects vacuum switch K3.
The signal processor of the present embodiment is for monitor current instrument transformer G, current transformer H, voltage transformer E, voltage transformer C, voltage transformer D, the numerical value of temperature sensor N2, defencive function is provided, high-voltage switch gear Q1, high-voltage switch gear Q2, high-voltage switch gear Q3 all passes into 3000V to 10000V high pressure, press vacuum switch K1, vacuum switch K2, vacuum switch K3, electric current starts to pulse digit trigger board charging energy-storing, time delay after several seconds trigger board start working, thyristor circuit 11 is started working, by the variation of light in photoelectric circuit, the resistance value of light-sensitive material is changed, thereby change the oscillating circuit trigger impulse moment, also just change thyristor and triggered phase shifting angle, SCR-output voltage is changed.Then the phase voltage that solid-state photoelectricity soft starter inputs to actuating motor M14 is by the curve increase of setting, after current transformer G10, current transformer H9 detect that electric current declines, signal processor control trigger board makes thyristor circuit completely in conducting state fast, now actuating motor M14 is in total head operating state, now vacuum switch M1, vacuum switch M2, vacuum switch M3 are communicated with, be close to the operating current that thyristor circuit is fallen on road, stop charging for trigger board simultaneously.Now vacuum switch K1, vacuum switch K2, vacuum switch K3 disconnect, and motor completes starting, and temperature sensor detects the working temperature of thyristor; if while finding that the temperature of thyristor exceedes set point; controller sends locking signal thing, and trip protection, operation very reliably, very safe.
In addition, thyristor circuit of the present invention is provided with and comprises thyristor A1, thyristor A2, thyristor A3, thyristor A4, thyristor A5, thyristor A6, thyristor B7, thyristor B8, thyristor B3, thyristor B4, thyristor B5, thyristor B6, these thyristors carry out connection in series-parallel and the object that reaches dividing potential drop is that motor is excessive, need large electric current, these thyristor parallel connections can be reached again to the object of shunting, so just form large power assembly, make the trigger impulse of these thyristors ensure homogeneity, ensure the several thyristors turn-on and turn-off simultaneously in every road, simultaneously according to two ends of every group of thyristor of power features of thyristor RC protective circuit in parallel, can limit transient voltage and steady state voltage and distribute uneven degree, ensure that each thyristor all presses conducting and blocking-up in the time of transient state and stable state, can be because of the asynchronous voltage that makes, electric current is added on some thyristors and causes and burns out, reliable, safety.
The present invention is also provided with current transformer G, current transformer H, voltage transformer E detects motor voltage, electric current, play overvoltage protection and overcurrent protection, if be short-circuited between motor turn-to-turn, alternate or circuit or electric current exceedes set point, controller sends signal, and tripping operation, reliable, safety; Circuit structure of the present invention is simple, and volume is little, therefore convenient transportation, easy for installation, easy to maintenance; In starting or running, utilize temperature sensor to detect the working temperature of thyristor, if while finding that the temperature of thyristor exceedes set point, controller sends locking signal thing, and trip protection, operation very reliably, very safe.
More than show and described general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements for example all fall into, in the claimed scope of the invention; RC protective circuit of the present invention can also several, and the claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (6)
1. a solid-state photoelectricity soft starter, for actuating motor M(14), it is characterized in that, comprise thyristor circuit (11), high-voltage switch gear group (15), vacuum switch group A(12), vacuum switch group B(13), trigger board (4), voltage transformer C(7), voltage transformer D(8), voltage transformer E(6), current transformer G(10), current transformer H(9), motor M(14) and for detection of the temperature sensor N(2 of thyristor circuit (11) working temperature) and for monitor current instrument transformer G(10), current transformer H(9), voltage transformer E(6), voltage transformer C(7), voltage transformer D(8), temperature sensor N(2) numerical value and provide the signal processor (1) of protection, described voltage transformer C(7) with voltage transformer D(8) be connected in series described vacuum switch group A(12) connect respectively high-voltage switch gear group (15), vacuum switch group B(13), thyristor circuit (11), voltage transformer C(7) primary coil, voltage transformer D(8) primary coil, described thyristor circuit (11) connects respectively trigger board (4), current transformer G(10) primary coil, current transformer H(9) primary coil, voltage transformer E(6) primary coil, motor M(14), described vacuum switch group B(13) connect motor M(14), described voltage transformer C(7) secondary coil, voltage transformer D(8) secondary coil, voltage transformer E(6) secondary coil, current transformer G(10) secondary coil, current transformer H(9) secondary coil, temperature sensor N(2) all connect signal processor (1), described trigger board (4) connects signal processor (1) by optical fiber, described high-voltage switch gear group (15) connects respectively voltage transformer C(7) primary coil, voltage transformer D(8) primary coil, described temperature sensor N.
2. a kind of solid-state photoelectricity soft starter according to claim 1; it is characterized in that, also comprise several RC protective circuits, described RC protective circuit comprises resistance R, capacitor C a; described resistance R, capacitor C a are in series, and described RC protective circuit connects thyristor circuit (11).
3. a kind of solid-state photoelectricity soft starter according to claim 2, is characterized in that, comprise six RC protective circuits, described thyristor circuit (11) comprises thyristor A1, thyristor A2, thyristor A3, thyristor A4, thyristor A5, thyristor A6, thyristor B7, thyristor B8, thyristor B3, thyristor B4, thyristor B5, thyristor B6, the control utmost point of described thyristor A1, the control utmost point of thyristor A2, the control utmost point of thyristor A3, the control utmost point of thyristor A4, the control utmost point of thyristor A5, the control utmost point of thyristor A6, the control utmost point of thyristor B7, the control utmost point of thyristor B8, the control utmost point of thyristor B3, the control utmost point of thyristor B4, the control utmost point of thyristor B5, the control of thyristor B6 extremely all connects trigger board (4), the negative electrode of the anodic bonding thyristor A2 of described thyristor A1, the negative electrode of described thyristor A1 connects the anode of thyristor A2, the negative electrode of the anodic bonding thyristor B4 of described thyristor B3, the negative electrode of described thyristor B3 connects the anode of thyristor B4, the negative electrode of described thyristor A1 connects the anode of thyristor B3, and the negative electrode of described thyristor B3 connects respectively the primary coil (10) of current transformer G, vacuum switch group B(13), motor M(14), the negative electrode of the anodic bonding thyristor A4 of described thyristor A3, the negative electrode of thyristor A3 connects the anode of thyristor A4, the negative electrode of the anodic bonding thyristor B6 of described thyristor B5, the negative electrode of described thyristor B5 connects the anode of thyristor B6, the negative electrode of described thyristor A3 connects the anode of thyristor B5, and the negative electrode of described thyristor B5 connects respectively current transformer G(10) primary coil, vacuum switch group B(13), motor M(14), voltage transformer E(6) one end of primary coil, the negative electrode of the anodic bonding thyristor A6 of described thyristor A5, the negative electrode of thyristor A5 connects the anode of thyristor A6, the negative electrode of the anodic bonding thyristor B8 of described thyristor B7, the negative electrode of described thyristor B8 connects the anode of thyristor B7, the negative electrode of described thyristor A5 connects the anode of thyristor B7, and the negative electrode of described thyristor B7 connects respectively voltage transformer E(6) the other end of primary coil, vacuum switch group B(13), motor M(14), the anode of described thyristor A1, the anode of thyristor A3, the anode of thyristor A5 all connects vacuum switch group A(12), between the anode of described thyristor A1 and negative electrode, connect RC protective circuit, between the anode of described thyristor A3 and negative electrode, connect RC protective circuit, between the anode of described thyristor A5 and negative electrode, connect RC protective circuit, between the anode of described thyristor B3 and negative electrode, connect RC protective circuit, between the anode of described thyristor B5 and negative electrode, connect RC protective circuit, between the anode of described thyristor B7 and negative electrode, connect RC protective circuit.
4. a kind of solid-state photoelectricity soft starter according to claim 3, it is characterized in that, described vacuum switch group A(12) comprise vacuum switch K1, vacuum switch K2, vacuum switch K3, the anodic bonding vacuum switch K1 of described thyristor A1, the anodic bonding vacuum switch K2 of described thyristor A3, the anodic bonding vacuum switch K3 of described thyristor A5.
5. a kind of solid-state photoelectricity soft starter according to claim 3, it is characterized in that, described vacuum switch group B(13) comprise vacuum switch M1, vacuum switch M2, vacuum switch M3, the negative electrode of described thyristor B3 connects vacuum switch M1, the negative electrode of described thyristor B5 connects vacuum switch M2, the negative electrode of described thyristor B7 connects vacuum switch M3, described vacuum switch K1 connects vacuum switch M1, voltage transformer C(7) one end of primary coil, described vacuum switch K2 connects respectively vacuum switch M2, voltage transformer C(7) the other end of primary coil, voltage transformer D(8) one end of primary coil, vacuum switch K3 connects vacuum switch M3, voltage transformer D(8) the other end of primary coil.
6. a kind of solid-state photoelectricity soft starter according to claim 5, it is characterized in that, described high-voltage switch gear group (15) comprises high-voltage switch gear Q1, high-voltage switch gear Q2, high-voltage switch gear Q3, described high-voltage switch gear Q1 connects vacuum switch K1, described high-voltage switch gear Q2 connects vacuum switch K2, and described high-voltage switch gear Q3 connects vacuum switch K3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410218213.1A CN103956941A (en) | 2014-05-22 | 2014-05-22 | Solid-state photo-electric soft starter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410218213.1A CN103956941A (en) | 2014-05-22 | 2014-05-22 | Solid-state photo-electric soft starter |
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| CN103956941A true CN103956941A (en) | 2014-07-30 |
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| CN201410218213.1A Pending CN103956941A (en) | 2014-05-22 | 2014-05-22 | Solid-state photo-electric soft starter |
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Citations (4)
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| US20040155622A1 (en) * | 2003-02-12 | 2004-08-12 | Scott Mayhew | System and method for stall detection of a motor |
| CN201294473Y (en) * | 2008-10-17 | 2009-08-19 | 常熟市森原电器厂 | Soft actuating device of high-power high-voltage motor |
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| CN102097984A (en) * | 2011-02-28 | 2011-06-15 | 高越农 | Quasi-saturated reactor high-voltage electric motor soft start device |
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2014
- 2014-05-22 CN CN201410218213.1A patent/CN103956941A/en active Pending
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| US20040155622A1 (en) * | 2003-02-12 | 2004-08-12 | Scott Mayhew | System and method for stall detection of a motor |
| CN201294473Y (en) * | 2008-10-17 | 2009-08-19 | 常熟市森原电器厂 | Soft actuating device of high-power high-voltage motor |
| CN201608677U (en) * | 2009-03-02 | 2010-10-13 | 湖北华云电气有限公司 | Pulse-sampling isolation control device based on high-voltage solid-state soft starter |
| CN102097984A (en) * | 2011-02-28 | 2011-06-15 | 高越农 | Quasi-saturated reactor high-voltage electric motor soft start device |
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Application publication date: 20140730 |