CN203352515U - Control system device for switched reluctance motor - Google Patents
Control system device for switched reluctance motor Download PDFInfo
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- CN203352515U CN203352515U CN 201320223915 CN201320223915U CN203352515U CN 203352515 U CN203352515 U CN 203352515U CN 201320223915 CN201320223915 CN 201320223915 CN 201320223915 U CN201320223915 U CN 201320223915U CN 203352515 U CN203352515 U CN 203352515U
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Abstract
The utility model discloses a control system device for a switched reluctance motor, and the control system device is characterized in that the device comprises an MCU module, an external man-machine interface module, a driving transformation driving protection and brake driving module, a three-phase current sampling module, a power transformation module, a three-phase switched reluctance motor module, a brake circuit module, a switch power supply module, a rectification filtering module, a power supply module and a position code disc module. Parameters are controlled by the control system device for the switched reluctance motor to be fit with the selected or designed motor, and the device is also advantaged by ultra-low speed running and rapid acceleration and deceleration characteristics under conditions of man-machine interface and overloading, motor-matched self-adaptive control algorithm and over 15,000 RPM high speed characteristics, stable speed regulation and rotating speed characteristics of rapid and intelligent shutdown brake and within whole speed regulation range, low cost, and high cost performance.
Description
Technical field
The utility model belongs to the switched reluctance machines field, specifically, relates to a kind of switched Reluctance Motor Control System device.
Background technology
Switched reluctance machines is a kind of novel buncher, and governing system has direct current concurrently, exchanges the advantage of two class governing systems, is the latest generation stepless time adjustment system of frequency conversion speed-adjusting system, Speed Regulating System of Brushless DC Motor of continuing.It simple in structure firm, speed-regulating range width, the speed adjusting performance excellence, and all there is greater efficiency in whole speed adjustable range, system reliability is high.
Switched reluctance machines is simple in structure, superior performance, and reliability is high, the various high driven at low speed governing system of coverage power scope 10W～5MW.There are many potential fields in switched reluctance machines, in various speed governing and the high efficiency occasions of needing, all can be used widely.Switched reluctance machines has following characteristics:
1, it is simple in structure, low price, and the rotor of motor does not have winding and magnet.
2, rotor, without permanent magnet, allows higher temperature rise.Due to winding, all on stator, motor is easily cooling, and efficiency is high, and loss is little.
3, torque direction and the sense of current are irrelevant, only need folk prescription phase winding electric current, power switch of every phase, and power circuit and control circuit are simple and reliable, have higher economy and reliability.
4, on rotor, do not have brush structure firm, be applicable to high-speed driving.
5, speed-regulating range width, control flexibly, is easy to realize various regenerative braking abilities.
But 6 Fraquent starts (1000 times/hour), the special occasions that is applicable to the Direct/Reverse running is used.
7, starting current is little, and starting torque is large, more outstanding during low speed.
In view of switched reluctance machines has above problem, we design a kind of switched reluctance machines low speed control algolithm, through research, debugging, experiment repeatedly, and the real-world operation of complete machine test, have verified feasibility and the stability of the utility model algorithm.
Summary of the invention
The technical problems to be solved in the utility model is to overcome above-mentioned defect; provide a kind of parameter of controlling to mate with the motor of selected or design; and utmost point low-speed running under man-machine interface, case of heavy load, the adaptive control algorithm, the high speed characteristics that surpasses 15000RPM, quick, intelligent shutdown braking, the stable speed governing rotary speed property in full speed adjustable range of acceleration and deceleration characteristic, motor coupling fast need be provided, and require the switched Reluctance Motor Control System device of lower cost and high cost performance.
For addressing the above problem, the technical scheme that the utility model adopts is:
A kind of switched Reluctance Motor Control System device is characterized in that: comprise MCU module, outside human-machine interface module, drive conversion to drive protection and braking driver module, three-phase current sampling module, power conversion module, threephase switch reluctance motor module, braking circuit module, switch power module, rectification filtering module, power module and position code disk module; Power module is electrically connected to rectification filtering module and switch power module, and rectification filtering module is electrically connected to the power conversion module, and switch power module is electrically connected to respectively and drives conversion to drive protection and braking driver module and MCU module; Described MCU module is electrically connected to outside human-machine interface module, threephase switch reluctance motor module, position code disk module and three-phase current sampling module, and described three-phase current sampling module is electrically connected to the power conversion module; Described driving conversion drives protection and braking driver module to be electrically connected to the braking circuit module.
As a kind of improvement, the threephase switch reluctance motor module that described threephase switch reluctance motor module is the 6-4 structure.
As a kind of improvement, described position code disk module is the optoelectronic switch encoder, and the optoelectronic switch encoder produces six encoded position signal.
The utility model also provides a kind of control method of switched Reluctance Motor Control System device, it is characterized in that: the segmentation that realizes the switched reluctance machines rotating speed is controlled, and is specially:
Switched reluctance machines starts and is less than the utmost point low-speed stage employing stepping program of 200RPM, thereby makes motor obtain larger starting torque, motor is started smoothly and maintain utmost point low cruise;
During low speed segment more than switched reluctance machines 200RPM, below 2600RPM, adopt six of single doublebeat alternate conduction to clap the closed-loop control of conductings, can realize that motor can smoothly adjustable-speed at low speed segment;
During high regime more than switched reluctance machines 2600r/min, adopt and move angle single six and clap closed-loop controls, thereby negative torque occurs, control by moving angle, can make conducting turn-off in advance mutually, avoid occurring negative torque, obtain the smoothly adjustable-speed of high regime.
As a kind of improvement, the switched reluctance machines Current Control has adopted segmentation PWM and pilot angle fuzzy control, is specially:
Configuration switch reluctance motor rotating speed is during lower than 200RPM, and rotating speed is taked open loop step state control strategy on controlling, and PWM controls and takes the PAM modulation strategy, and Current Control is taked the scalar mode;
Configuration switch reluctance motor rotating speed is higher than 200RPM and rotating speed during lower than the continuous pulsewidth rotating speed of minimum, rotating speed is controlled and is taked the position closed loop control strategy, PWM controls the Frequency control strategy of taking fixing effective pulsewidth and changing invalid pulsewidth, and electric current takes stagnant ring to control;
Configuration switch reluctance motor rotating speed is during higher than the continuous pulsewidth rotating speed of minimum, and rotating speed is controlled and taked the position closed loop control strategy, and PWM controls and takes fixed frequency control strategy, electric current to take stagnant ring to control.
As a kind of improvement, the continuous pulsewidth rotating speed of described minimum is each PWM has output rotating speed corresponding to minimum pulse width in the cycle.
Owing to having adopted technique scheme, compared with prior art, the beneficial effects of the utility model are:
If 1, motor adopts 6-4 formula rotor structure, when the heavy duty of motor band starts to start from the torque dead band, the starting torque deficiency, now take open loop approach to drag rotor according to the direction of expectation according to electric current and position signalling variation automatically, makes the motor normal starting.
2, decode to determine that according to the optoelectronic switch encoder what kind of opens phase sequence and service time, and take this signal as with reference to calculating rotating speed.
3, in the different rotating speed stages, use the different angles of flow, exerting oneself of maximum magnitude ground performance motor, improve electric efficiency.
4, the different rotating speed stage, take different conducting phase sequence lists, different rotating speed account form and speed control strategy.
5, the different rotating speed stage, take different voltage given algorithms, make motor can both be stabilized to given rotating speed under different loading conditions.
6, comprehensively judge that according to the parameter of real-time motor speed, brake resistance temperature, stalling current size, stalling current variation tendency, rotor-position signal whether braking force is reasonable, and the regulating brake force size.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail simultaneously.
The accompanying drawing explanation
The switched reluctance machines conducting schematic diagram of the 6-4 stator and rotor sructure that Fig. 1 is a kind of embodiment of the utility model;
The software flow pattern that the conduction mode of the 6-4 stator and rotor sructure that Fig. 2 is a kind of embodiment of the utility model and the angle of flow are regulated;
The software flow pattern of the voltage and current control algolithm of the different rotating speeds that Fig. 3 is a kind of embodiment of the utility model;
The rotating speed of the different rotating speeds that Fig. 4 is a kind of embodiment of the utility model calculates software flow pattern.
Embodiment
Embodiment:
A kind of switched Reluctance Motor Control System device, comprise MCU module, outside human-machine interface module, drive conversion to drive protection and braking driver module, three-phase current sampling module, power conversion module, threephase switch reluctance motor module, braking circuit module, switch power module, rectification filtering module, power module and position code disk module; Power module is electrically connected to rectification filtering module and switch power module, and rectification filtering module is electrically connected to the power conversion module, and switch power module is electrically connected to respectively and drives conversion to drive protection and braking driver module and MCU module; Described MCU module is electrically connected to outside human-machine interface module, threephase switch reluctance motor module, position code disk module and three-phase current sampling module, and described three-phase current sampling module is electrically connected to the power conversion module; Described driving conversion drives protection and braking driver module to be electrically connected to the braking circuit module.
In the present embodiment, the threephase switch reluctance motor module that described threephase switch reluctance motor module is the 6-4 structure.Described position code disk module is the optoelectronic switch encoder, and the optoelectronic switch encoder produces six encoded position signal.
As shown in Figure 1, the control method of a kind of switched Reluctance Motor Control System device of the utility model, realize that the segmentation of switched reluctance machines rotating speed is controlled, and is specially:
Switched reluctance machines starts and is less than the utmost point low-speed stage employing stepping program of 200RPM, thereby makes motor obtain larger starting torque, motor is started smoothly and maintain utmost point low cruise;
During low speed segment more than switched reluctance machines 200RPM, below 2600RPM, adopt six of single doublebeat alternate conduction to clap the closed-loop control of conductings, can realize that motor can smoothly adjustable-speed at low speed segment;
During high regime more than switched reluctance machines 2600r/min, adopt and move angle single six and clap closed-loop controls, thereby negative torque occurs, control by moving angle, can make conducting turn-off in advance mutually, avoid occurring negative torque, obtain the smoothly adjustable-speed of high regime.
Wherein, the switched reluctance machines Current Control has adopted segmentation PWM and pilot angle fuzzy control, is specially:
Configuration switch reluctance motor rotating speed is during lower than 200RPM, and rotating speed is taked open loop step state control strategy on controlling, and PWM controls and takes the PAM modulation strategy, and Current Control is taked the scalar mode; Configuration switch reluctance motor rotating speed is higher than 200RPM and rotating speed during lower than the continuous pulsewidth rotating speed of minimum, rotating speed is controlled and is taked the position closed loop control strategy, PWM controls the Frequency control strategy of taking week to determine effective pulsewidth and changing invalid pulsewidth, and electric current takes stagnant ring to control; Configuration switch reluctance motor rotating speed is during higher than the continuous pulsewidth rotating speed of minimum, and rotating speed is controlled and taked the position closed loop control strategy, and PWM controls and takes fixed frequency control strategy, electric current to take stagnant ring to control.
In the present embodiment, the continuous pulsewidth rotating speed of described minimum is each PWM has output rotating speed corresponding to minimum pulse width in the cycle.
It is example that the utility model be take the switched reluctance machines of 6-4 formula rotor structure, explains the situation.Due to position code-disc installation deviation, make motor torque have certain dead band; When the heavy duty of motor band starts to start from the torque dead band, the starting torque deficiency; If motor is in 50ms, position code-disc signal does not change, the electric motor starting difficulty is described, at first software will stop, then again increase fast the moment actuating motor, after 3 times, position code-disc signal does not still change repeatedly, automatically according to the direction of expectation, take open loop approach to skip a moving rotor in love forward, make the motor normal starting.
When low speed is less than 200RPM, as shown in Figure 2, step mode is single doublebeat mode, i.e. A-AB-B-BC-C-CA; Rotating speed adopts open loop control mode, and to take the 32ms fixed be commutating period, and irrelevant with the position code-disc, rotating speed is also without calculating, as Fig. 4.Position signalling is for the given judgement of electric current, and the size for load judges simultaneously, and current control mode is the scalar mode, and current closed-loop is that stagnant ring is controlled, as shown in Figure 3.
In the middling speed stage, when rotating speed is less than 1000RPM, step mode is single doublebeat mode, as Fig. 2; Rotating speed is controlled as closed-loop control, and it is basis that rotating speed calculates the cycle that adopts position code-disc signal intensity, as Fig. 4; Because the empty load of motor rotating speed surpasses 18000RPM, during normal operation, the frequency of PWM is for surpassing 12KHz, and the cycle is 83us, and it is 2us that the minimum of consideration power tube is opened pulse, according to minimum duty cycle 2.5%, calculate like this, motor speed surpasses 450RPM, can't realize that the speed closed loop of 200-450RPM is controlled, therefore the PWM in rotating speed control is not the mode of determining frequency modulation joint duty ratio, but in underloading, fixedly minimum pulse width, increase the turn-off time, as Fig. 3; The interior ring that Current Control is the rotating speed control ring, change with transformation of speed, and current closed-loop is that stagnant ring is controlled.
In the middling speed stage, rotating speed is more than 1000RPM, and while being less than 2600RPM, step mode is still single doublebeat, as Fig. 2; Rotating speed is controlled as closed-loop control, and it is basis that rotating speed calculates the frequency that adopts position code-disc signal intensity, and the fixing number with 80ms sampling tacho-pulse, calculate real-time rotate speed, as Fig. 4; Motor control voltage now, adopt normal PWM mode, as Fig. 3; The interior ring that Current Control is the rotating speed control ring, current closed-loop is that stagnant ring is controlled, and with transformation of speed, changes.
At high speed stage, when rotating speed surpasses 2600RPM, step mode is single bat mode, and A-A-B-B-C-C, and 15 ° of intervals of conducting afterbody are not open-minded, as Fig. 2; Rotating speed is controlled as closed-loop control, it is basis that rotating speed calculates the frequency that adopts position code-disc signal intensity, at 3000RPM-5000RPM with the sample number of tacho-pulse of 60ms sampling interval, calculate real-time rotate speed, and be respectively the sampling interval of 30ms and 10ms at 5000RPM-8000RPM with more than 8000RPM, as Fig. 4; The control voltage of motor, adopt normal PWM mode, as Fig. 3; The interior ring that Current Control is the rotating speed control ring, current closed-loop is that stagnant ring is controlled, and with transformation of speed, changes.
Shutting down the deboost phase; having adopted current automatic adaptation to follow the tracks of controls; be specially: once stopping brake starts; take rotating speed as 60RPM as controlling target; real-time tracking brake resistance temperature, stalling current size, stalling current variation tendency, rotor-position signal; guaranteeing that the brake resistance temperature is no more than 85 ℃; and stalling current is no more than 8A, size of current and is no more than 2 times, rotor-position in variation and does not occur under prerequisite that inverted running changes; improve braking force as far as possible; guarantee fast braking; drop to zero-speed from 15000RPM, be no more than the soonest 2.5 seconds.Any one of above condition is made a mistake, and real-time regulating brake force size, reduce the impact to hardware.
Although the specific embodiment that is the 6-4 utmost point according to stator and rotor sructure at this is described the utility model, to those skilled in the art, various other variation and modification and other application are apparent.The utility model is not limited to above-mentioned preferred implementation; anyone should learn the structural change of making under enlightenment of the present utility model; every with the utlity model has identical or akin technical scheme, all belong to protection range of the present utility model.
Claims (3)
1. a switched Reluctance Motor Control System device, is characterized in that: comprise MCU module, outside human-machine interface module, drive conversion to drive protection and braking driver module, current sample module, power conversion module, switched reluctance machines module, braking circuit module, switch power module, rectification filtering module, power module and position code disk module; Power module is electrically connected to rectification filtering module and switch power module, and rectification filtering module is electrically connected to power die change piece, and switch power module is electrically connected to respectively and drives conversion to drive protection and braking driver module and MCU module; Described MCU module is electrically connected to outside human-machine interface module, switched reluctance machines module, position code disk module and current sample module, and described current sample module is electrically connected to the power conversion module; Described driving conversion drives protection and braking driver module to be electrically connected to the braking circuit module.
2. switched Reluctance Motor Control System device according to claim 1, it is characterized in that: described switched reluctance machines module is the switched reluctance machines module that stator and rotor sructure is 6-4 or 8-6 structure.
3. switched Reluctance Motor Control System device according to claim 1, it is characterized in that: described position code disk module is the optoelectronic switch encoder, and the optoelectronic switch encoder produces a certain number of encoded position signal according to different stator and rotor sructures.
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| CN 201320223915 CN203352515U (en) | 2013-04-25 | 2013-04-25 | Control system device for switched reluctance motor |
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| CN 201320223915 CN203352515U (en) | 2013-04-25 | 2013-04-25 | Control system device for switched reluctance motor |
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| CN203352515U true CN203352515U (en) | 2013-12-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414407A (en) * | 2013-04-25 | 2013-11-27 | 宋社民 | A switched reluctance motor control system apparatus and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414407A (en) * | 2013-04-25 | 2013-11-27 | 宋社民 | A switched reluctance motor control system apparatus and control method thereof |
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