CN103326651A - Alternating current motor control system based on vector control - Google Patents
Alternating current motor control system based on vector control Download PDFInfo
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- CN103326651A CN103326651A CN2013101349104A CN201310134910A CN103326651A CN 103326651 A CN103326651 A CN 103326651A CN 2013101349104 A CN2013101349104 A CN 2013101349104A CN 201310134910 A CN201310134910 A CN 201310134910A CN 103326651 A CN103326651 A CN 103326651A
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Abstract
The invention discloses an alternating current motor control system based on vector control. The alternating current motor control system comprises a system power source, a motor, a motor control switch, a motor accelerator pedal controller, an LED, a switch power source circuit, a preceding stage voltage limiting protective circuit, a preceding stage protective circuit, an isolating drive circuit, an optical coupling isolation circuit, a preceding stage drive circuit, a power amplifying circuit, a serial driving circuit, a system information interface and a high-speed microprocessor. According to the alternating current motor control system based on the vector control, the alternating current motor is used as a controlled member; space vector pulse width modulation (SVPWM) calculated and output by the high-speed microprocessor passes through the power amplifying circuit to drive the motor; forward running, reverse running and stop of the motor are controlled through the function switching value; a speed pedal controls the running speed of the motor; the running state of the motor, power source voltage and the running current of the motor are displayed through the LED or output outwards through a serial communication interface. The alternating current motor control system based on the vector control has the advantages of being high in direct-current power source use ratio, low in electrical loss, wide in speed adjustable range, stable in motor running state and the like.
Description
Technical field
The present invention relates to a kind of AC induction motor, specifically relate to the AC Motor Control system based on vector control.
Background technology
AC induction motor is simple in structure because of it, low price, easy to maintenance, is widely used in producing and living.Development and popularization and application along with microelectric technique, power electronic technology, microprocessor technology, the speed governing of motor progressively is transitioned into the squirrel cage induction motor frequency control from DC generator-group of motors speed governing, the speed governing of silicon controlled rectifier direct current voltage reulation, and along with the improving constantly of control technology and control device, frequency control develops into U/F (voltage/frequency) constant control PWM frequency control.But the shortcomings such as existing electric machine speed regulation ubiquity DC power supply utilance is low, electrical loss is large, speed adjustable range is narrow, motor operating state is stable not.
Summary of the invention
The purpose of this invention is to provide that a kind of DC power supply utilance is high, electrical loss is little, speed-regulating range width, low to the parameter request of motor, be convenient to the AC Motor Control system based on vector control that digitization program is realized.
In order to achieve the above object, the present invention adopts following technical scheme: a kind of AC Motor Control system based on vector control, and it comprises system power supply, motor, motor control switch, motor accelerator pedal, system information interface, LCD liquid crystal display screen, switching power circuit, prime pressure limited protection circuit, prime protective circuit, isolated drive circuit, optical coupling isolation circuit, front stage drive circuit, power amplification circuit, serial port drive circuit and high speed microprocessor;
Described high speed microprocessor comprises A/D converter with analog-digital conversion function and output port, switching value input port, serial communication interface, electricity erasable memorizer, it has high-performance 32-bit CPU, energy high speed processing external information and computing, for system's reliability service is given security, A/D converter wherein is the analog to digital converter with 12 precision, provides assurance for system accurately controls motor speed;
Described system power supply connects the switching power circuit with overvoltage and overcurrent protection, switching power circuit provides 15VDC for system, 5VDC, 3.3VDC, 1.9VDC the power supply of four kinds of states, wherein the 15VDC Switching Power Supply is front stage drive circuit, motor accelerator pedal controller provides D.C. regulated power supply, the 5VDC Switching Power Supply is the prime pressure limited protection circuit, the prime protective circuit, isolated drive circuit, optical coupling isolation circuit, front stage drive circuit and serial port drive circuit provide D.C. regulated power supply, 3.3VDC, 1.9VDC Switching Power Supply provides D.C. regulated power supply for high speed microprocessor, employed Switching Power Supply all is the efficient power with anti-high voltage and anti-overcurrent, their Energy Efficiency Ratio all reaches more than 70%, and good energy-saving effect is arranged;
The output of described accelerator pedal controller is connected with 12 A/D converter of high speed microprocessor through the prime pressure limited protection circuit, adopt the accelerator pedal controller can accurately control the motor speed of service, can improve antijamming capability and the reliability of whole system after the processing of accelerator pedal controller through the prime pressure limited protection circuit;
Described motor control switch is connected with the switching value input port of high speed microprocessor through the prime protective circuit, motor control switch provides to high speed microprocessor that motor is positive and negative, the control signal of halted state, motor control switch is through one being in order to guarantee safe and reliable to the signal of high speed microprocessor after the prime protective circuit, another is to prevent that the signal such as high pressure to the impact of system, guaranteeing system's reliability service;
The output port of described high speed microprocessor is connected with the input of isolated drive circuit, and the output one tunnel of isolated drive circuit connects optical coupling isolation circuit, and optical coupling isolation circuit connects power amplification circuit, power amplification circuit drive motors through front stage drive circuit; Another road of isolated drive circuit connects the LCD liquid crystal display screen and drives demonstration.Wherein isolated drive circuit, optical coupling isolation circuit are for the signal that makes high speed microprocessor output can make again power supply separately mutually isolate by effective communication, improve the security of system reliability; Front stage drive circuit is that the signal that prime is inputted is treated to the needed signal type of rear class, makes the signal effective communication; Described power amplification circuit provides required electric current by space vector pulse width modulation (svpwm) method for motor, realizes motor stepless speed regulation, improves the stability of motor, reduces energy consumption; Another road that is connected with isolated drive circuit is the LCD liquid crystal display screen, and it is used for showing the speed of service of motor, can observe motor speed by liquid crystal display screen;
The serial communication interface of described high speed microprocessor connects through serial port drive Circuits and Systems information interface, realize the input and output of system running state, can outwards transmit the running current of the running status of motor, supply voltage, motor by serial communication interface as the output high speed microprocessor; Equally also can pass through system information interface, serial communication interface and control the various running statuses of motor to high speed microprocessor input motor operating instruction;
The information of described electricity erasable memorizer record motor operating state comprises the information of motor operating state, system power supply voltage, motor operating current etc., and purpose is in order analytical system abnormal cause when unusual to occur when system.
The present invention is take alternating current machine as control object, the state setting (operation of motor according to motor control switch, forward, oppositely, stop), pedal position setting (speed of service of motor) according to motor accelerator pedal controller, calculate output frequency signal successively through isolated drive circuit by high speed microprocessor, optical coupling isolation circuit, front stage drive circuit, power amplification circuit drives alternating current machine, (the operation of motor of the running status of motor, forward, oppositely, stop, the motor speed of service), system power supply voltage, the running current of motor by serial communication interface through the serial port drive circuit, the system information interface outwards transmits, the LCD liquid crystal display screen shows the motor speed of service simultaneously, electricity erasable memorizer record motor operating state information (motor operating state, system power supply voltage, the information of motor operating current); When the state of emergency appears in system, also can control by system information interface, serial port drive circuit, serial communication interface the operation of motor to the high speed microprocessor sending controling instruction, guarantee the security of system reliability service.Native system has that the DC power supply utilance is high, electrical loss is low, speed-regulating range width, motor operating state are stable, to characteristics such as the parameter request of motor are low.
Description of drawings
Fig. 1 is control principle drawing of the present invention.
Among the figure: system power supply 1, switching power circuit 2, motor accelerator pedal controller 3, prime pressure limited protection circuit 4; motor control switch 5, prime protective circuit 6, high speed microprocessor 7, A/D converter 8; output port 9, switching value input port 10, serial communication interface 11; electricity erasable memorizer 12, isolated drive circuit 13, optical coupling isolation circuit 14; front stage drive circuit 15, power amplification circuit 16, motor 17; LCD liquid crystal display screen 18, serial port drive circuit 19, system information interface 20.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
The described a kind of AC Motor Control system based on vector control of Fig. 1, it comprises system power supply 1, motor 17, motor control switch 5, motor accelerator pedal controller 3, LCD liquid crystal display screen 18, switching power circuit 2, prime pressure limited protection circuit 4, prime protective circuit 6, isolated drive circuit 13, optical coupling isolation circuit 14, front stage drive circuit 15, power amplification circuit 16, serial port drive circuit 11, system information interface 20 and high speed microprocessor 7; Described high speed microprocessor 7 comprises A/D converter 8 with analog-digital conversion function and output port 9, switching value input port 10, serial communication interface 11, electricity erasable memorizer 12;
Wherein:
1. switching power circuit
The system power supply of this control system connects the switching power circuit with overvoltage and overcurrent protection, for system provides 15VDC, 5VDC, 3.3VDC, 1.9VDC the power supply of four kinds of states, wherein the 15VDC Switching Power Supply is front stage drive circuit, motor accelerator pedal controller provides D.C. regulated power supply, the 5VDC Switching Power Supply is the prime pressure limited protection circuit, the prime protective circuit, isolated drive circuit, optical coupling isolation circuit, front stage drive circuit and serial port drive circuit provide D.C. regulated power supply, 3.3VDC, 1.9VDC Switching Power Supply provides D.C. regulated power supply for high speed microprocessor, employed Switching Power Supply all is the efficient power with anti-high voltage and anti-overcurrent, their Energy Efficiency Ratio all reaches more than 70%, and good energy-saving effect is arranged;
2. the measurement of motor accelerator pedal controller signals
The output of the accelerator pedal controller of this control system is connected with 12 A/D converter of high speed microprocessor through the prime pressure limited protection circuit, so all transducing signals in the measuring system accurately, for
Accurately controlling motor operating state, accident analysis and realization control lays a good foundation; Used a large amount of filtering and current-limiting circuit in motor accelerator pedal controller, prime pressure limited protection circuit, can improve antijamming capability and the reliability of system, it is used for the speed of control motor;
3. the measurement of motor control switch signal
The motor control switch of this control system is connected with the switching value input port of high speed microprocessor through the prime protective circuit, motor control switch provides to high speed microprocessor that motor is positive and negative, the control signal of halted state, motor control switch is through one being in order to guarantee safe and reliable to the signal of high speed microprocessor after the prime protective circuit, and another is to prevent that the signal such as high pressure from can move system to the impact of system reliably; Owing to the various signal demand analysis-by-synthesis in the whole control system, could determine comprehensive situation of control system, after therefore the switching signal in the control system being isolated by the prime protective circuit, be input in the microprocessor;
4. the selection of high speed microprocessor
Because the method operand of the space vector pulse width modulation (svpwm) that native system adopts is larger, therefore the high speed microprocessor of selecting is TMS320F2812, it is a typical voltage-type (svpwm) inverter, can produce the pulse width modulated wave that harmonic wave is less and the direct voltage utilance is higher, the rate signal that high speed microprocessor is sent here according to motor accelerator pedal controller, after the run signal that motor control switch is sent here is calculated by high speed microprocessor the svpwm ripple that generates is inputed to the input of isolated drive circuit through the output port of high speed microprocessor, the output one tunnel of isolated drive circuit connects optical coupling isolation circuit, optical coupling isolation circuit through front stage drive circuit to the final drive motors of power amplification circuit, isolated drive circuit wherein, optical coupling isolation circuit is for the signal that makes high speed microprocessor output can make again power supply separately mutually isolate by effective communication, has improved the security of system reliability; Front stage drive circuit is the signal that prime is inputted to be treated to the needed signal type of rear class signal is transmitted effectively; Power amplification circuit provides required electric current by space vector width pulse modulation method for motor, realizes motor stepless speed regulation, improves the stability of motor, reduces energy consumption;
5. the demonstration of the speed of service
The high speed microprocessor of this control system receives different control signal control motor operations, simultaneously the speed of service of the motor output port by high speed microprocessor is shown through the LCD liquid crystal display screen that isolated drive circuit connects, so just can observe by the LCD liquid crystal display screen ruuning situation of motor;
6. serial communication information
The serial communication interface of the high speed microprocessor of this control system connects through serial port drive Circuits and Systems information interface, realize the input and output of system running state, can outwards transmit the running current of the running status of motor, supply voltage, motor by serial communication interface as the output high speed microprocessor; Equally also can pass through system information interface, serial communication interface and control the various running statuses of motor to high speed microprocessor input motor operating instruction;
7. electricity erasable memorizer
The information (comprising the information of motor operating state, system power supply voltage, motor operating current etc.) of electricity erasable memorizer record motor operating state, the purpose that it is set are in order analytical system abnormal cause when unusual to occur when system.
During work; after whole system connected; connect system power supply; switching power circuit is in running order; and the power supply of each voltage status is provided to each function module circuit; if make the motor forward just motor control switch be placed positive transposition; signal enters the switching value input port of high speed microprocessor through the prime protective circuit; depress the speed pedal of motor accelerator pedal controller; signal enters the analog-to-digital conversion port of the A/D converter of high speed microprocessor through the prime pressure limited protection circuit; high speed microprocessor goes out the SVPWM signal and outputs to isolated drive circuit through output port according to the calculated signals of input; the signal one tunnel of this moment is through optical coupling isolation circuit; front stage drive circuit; power amplification circuit is to motor; motor will be from the static needed speed of motor accelerator pedal that accelerates to gradually; another road of signal is to the LCD liquid crystal display screen; the speed that liquid crystal screen display motor is current; high speed microprocessor passes through serial communication interface simultaneously; the serial port drive circuit is with the running status of motor; supply voltage; the running current of motor outwards transmits, the information of electricity erasable memorizer record motor operating state.If need other motor status only need to transfer motor control switch and the pedal that depresses motor accelerator to get final product, it is darker that accelerator pedal is stepped on, and the speed of service of motor is faster.
When adopting system information interface control motor, if make the motor forward just with the motor forward, the speed input that requires, control signal enters the serial communication interface of high speed microprocessor through the serial port drive circuit, high speed microprocessor goes out the SVPWM signal and outputs to isolated drive circuit through output port according to the calculated signals of input, the signal one tunnel of this moment is through optical coupling isolation circuit, front stage drive circuit, power amplification circuit is to motor, motor will be from the static speed that accelerates to gradually input, another road of signal is to the LCD liquid crystal display screen, to show the speed that motor is current on the liquid crystal display screen, the information of motor operating state is recorded to electricity erasable memorizer simultaneously.
Native system adopts the digital control of high speed microprocessor, use the method for space vector pulse width modulation (SVPWM) take alternating current machine as control object, the SVPWM that is calculated output by high speed microprocessor is that three-phase sine-wave comes drive motors through the power amplification circuit output current, and SVPWM has harmonic current and pulsating torque is little, the direct voltage utilance is high, loss is less, be convenient to the advantage such as digitization program realization; Native system adopts the modularized program design, the stepless rotation of control motor, forward operation, inverted running by functional switch amount control motor, stop, the pedal control motor speed of service of motor accelerator pedal controller, the running current of the running status of motor, supply voltage, motor can outwards transmit with the serial output terminal mouth, also can show with LCDs, can outwards transmit by the running current of serial communication interface with the running status of motor, supply voltage, motor equally; Also can pass through system information interface, driven in series circuit, serial communication interface and control the various running statuses of motor to high speed microprocessor input motor operating instruction.
Claims (1)
1. AC Motor Control system based on vector control, it comprises system power supply, motor, motor control switch, motor accelerator pedal controller, LCD liquid crystal display screen, switching power circuit, prime pressure limited protection circuit, prime protective circuit, isolated drive circuit, optical coupling isolation circuit, front stage drive circuit, power amplification circuit, serial port drive circuit, system information interface and high speed microprocessor;
Described high speed microprocessor comprises A/D converter with analog-digital conversion function and output port, switching value input port, serial communication interface, electricity erasable memorizer;
Described system power supply connects the switching power circuit with overvoltage and overcurrent protection, and switching power circuit provides the power supply of 15VDC, 5VDC, 3.3VDC, four kinds of states of 1.9VDC for system;
The output of described motor accelerator pedal controller is connected with the A/D converter of high speed microprocessor through the prime pressure limited protection circuit, and motor accelerator pedal controller provides motor speed of service control signal to high speed microprocessor;
Described motor control switch is connected with the switching value input port of high speed microprocessor through the prime protective circuit, and motor control switch provides to high speed microprocessor that motor is positive and negative, the control signal of halted state;
The output port of described high speed microprocessor is connected with the input of isolated drive circuit, the output one tunnel of isolated drive circuit connects optical coupling isolation circuit, optical coupling isolation circuit connects power amplification circuit through front stage drive circuit, the power amplification circuit drive motors, another road of isolated drive circuit connects the LCD liquid crystal display screen;
The serial communication interface of described high speed microprocessor connects through serial port drive Circuits and Systems information interface, realizes the input and output of system running state;
The output information of the electricity erasable memorizer record motor operating state of described high speed microprocessor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101349104A CN103326651A (en) | 2013-04-18 | 2013-04-18 | Alternating current motor control system based on vector control |
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| CN2013101349104A CN103326651A (en) | 2013-04-18 | 2013-04-18 | Alternating current motor control system based on vector control |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112994554A (en) * | 2021-03-22 | 2021-06-18 | 苏州艾楠达智能科技有限公司 | Research on vector motor control and 5G communication core algorithm |
Citations (5)
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|---|---|---|---|---|
| US4962339A (en) * | 1987-08-21 | 1990-10-09 | Westinghouse Electric Corp. | Pole-tying current control apparatus |
| US20070018606A1 (en) * | 2003-03-12 | 2007-01-25 | Hideaki Iura | Method and device for sensorless vector control for ac motor |
| CN101295933A (en) * | 2007-04-25 | 2008-10-29 | 中国科学院自动化研究所 | Frequency conversion power source based on digital signal processor controlling |
| CN201937536U (en) * | 2011-01-10 | 2011-08-17 | 武汉市菱电汽车电子有限责任公司 | Single regulating loop indirect torque control device of three-phase induction motor |
| CN201966870U (en) * | 2010-09-29 | 2011-09-07 | 天津市松正电动汽车技术股份有限公司 | Motor controller used for automobile |
-
2013
- 2013-04-18 CN CN2013101349104A patent/CN103326651A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4962339A (en) * | 1987-08-21 | 1990-10-09 | Westinghouse Electric Corp. | Pole-tying current control apparatus |
| US20070018606A1 (en) * | 2003-03-12 | 2007-01-25 | Hideaki Iura | Method and device for sensorless vector control for ac motor |
| CN101295933A (en) * | 2007-04-25 | 2008-10-29 | 中国科学院自动化研究所 | Frequency conversion power source based on digital signal processor controlling |
| CN201966870U (en) * | 2010-09-29 | 2011-09-07 | 天津市松正电动汽车技术股份有限公司 | Motor controller used for automobile |
| CN201937536U (en) * | 2011-01-10 | 2011-08-17 | 武汉市菱电汽车电子有限责任公司 | Single regulating loop indirect torque control device of three-phase induction motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112994554A (en) * | 2021-03-22 | 2021-06-18 | 苏州艾楠达智能科技有限公司 | Research on vector motor control and 5G communication core algorithm |
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Application publication date: 20130925 |