CN101860299A - Chopped wave logic control method and device for switched reluctance motor - Google Patents
Chopped wave logic control method and device for switched reluctance motor Download PDFInfo
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- CN101860299A CN101860299A CN201010197536A CN201010197536A CN101860299A CN 101860299 A CN101860299 A CN 101860299A CN 201010197536 A CN201010197536 A CN 201010197536A CN 201010197536 A CN201010197536 A CN 201010197536A CN 101860299 A CN101860299 A CN 101860299A
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Abstract
The invention relates to a chopped wave logic control method and a device for a switched reluctance motor. The device is characterized in that: a chopped wave logic control circuit is designed, which comprises a logic processing chip and D triggers, wherein three-phase switch signals of P_A, P_B and P_C are connected with the logic processing chip as well as the CP ports of the three D triggers respectively, a D port is connected with a reverse Q port in each D trigger, and a Q port of each D trigger is connected with the logic processing chip. The chopped wave logic control circuit is used for controlling a main power switching tube based on a phase switching signal of the switched reluctance motor. When one phase of the switched reluctance motor is switched on (the switch signal of the phase is in high level), if the phase switch signal output by the D triggers is detected by the logic processing chip to be in high level, the power switching tube controlling an upper bridge arm of the phase is in a chopped wave state while the power switching tube controlling a lower bridge arm of the phase is in a conducted state. The invention effectively lowers junction temperature of the chopped wave power switching tube, improves stability and reliability of the system, and effectively reduces electromagnetism noise of motors.
Description
Technical field
The present invention relates to a kind of switched reluctance motor chopped wave logic control method and device, be specifically related to a kind ofly make the upper and lower brachium pontis power switch pipe of switched reluctance motor main circuit replace the control method and the device of copped wave according to phase switching signal.
Background technology
Along with the develop rapidly of various high-tech technology, three-phase 12/8 pole switching reluctance motor has obtained application more and more widely at home.The threephase asynchronous of comparing, switched reluctance motor has advantages such as starting torque is big, simple in structure, speed adjustable range is wide, but has the big shortcoming of electromagnetic noise.In order to reduce electromagnetic noise, more incorporated business also is more and more deep to the research of the control mode of motor power (output) device.
At present the main circuit of switched reluctance motor commonly used as shown in Figure 1, the three phase mains input offers device for power switching after bridge rectifier and filter capacitor, set of power switches becomes asymmetric bridge type topology circuit structure.Each is connected into upper and lower two brachium pontis structures by two power switch pipes and motor windings.Therefore, the power cell of threephase switch reluctance motor is made up of six power switch pipes.The power switch pipe of the upper and lower brachium pontis of main circuit power cell connects the positive and negative busbar of main circuit respectively.By controlling the break-make of each mutually upper and lower brachium pontis power switch pipe, reach the rotating speed of switched reluctance motor and the purpose of torque control.The control mode of existing power switch pipe mainly is to decide brachium pontis copped wave, and promptly when this was opened mutually, this goes up brachium pontis mutually or following brachium pontis switching tube is in the copped wave state, and another brachium pontis is in opening state always.Motor noise is big, the copped wave power switch pipe damages easily is the drawback of existing control method maximum.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the problem that prior art exists, a kind of switching frequency that can reduce the switched reluctance motor power switch pipe has been proposed, reduce the caloric value of copped wave power switch pipe, reduce motor electromagnetism noise, make the upper and lower brachium pontis power switch pipe of switched reluctance motor main circuit can replace the switched reluctance motor chopped wave logic control method and the device of copped wave according to phase switching signal.
The technical solution adopted for the present invention to solve the technical problems is: this switched reluctance motor chopped wave logic control method is characterized in that:
1.1 design a copped wave logic control circuit, comprise logical process chip and d type flip flop, threephase switch signal P_A, P_B, P_C link to each other with the logical process chip, be connected with the CP port of three d type flip flops respectively simultaneously, the D port of d type flip flop and
Port connects, and the Q port of d type flip flop inserts the logical process chip respectively;
1.2 the copped wave logic control circuit is according to switch magnetic group motor phase switching signal power controlling switching tube, when opening switched reluctance machines wherein one when promptly this phase switching signal is high level mutually, when if the logical process chip detection is high level to the signal of phase switching signal after d type flip flop output, then control this power switch pipe of going up brachium pontis mutually and be in the copped wave state, following brachium pontis power switch pipe is in conducting state always; If when the logical process chip detection is low level to the signal of phase switching signal after d type flip flop output, then controls this power switch pipe that descends brachium pontis mutually and be in the copped wave state, last brachium pontis power switch pipe is in conducting state always.
Described copped wave logic control circuit is applicable to the N phase switch reluctance motor, when control N phase switch reluctance motor, its phase switching signal corresponds to N, N signal divides two-way to be admitted to the logical process chip, one the tunnel sends into N d type flip flop respectively behind d type flip flop, N the signal that produces inserts the logical process chip again, and the logical process chip is directly sent on another road.
The copped wave logic control device of this switched reluctance motor chopped wave logic control method, it is characterized in that: comprise logical process chip and d type flip flop, threephase switch signal P_A, P_B, P_C link to each other with the logical process chip, be connected with the CP port of three d type flip flops respectively simultaneously, the D port of d type flip flop and
Port connects, and the Q port of d type flip flop inserts the logical process chip respectively, and the output signals UP _ A of logical process chip, DN_A, UP_B, DN_B, UP_C, DN_C meet the power switch tube S 1-S6 of main circuit respectively, and directly the power controlling switching tube cut-offs.
Compared with prior art, switched reluctance motor chopped wave logic control method of the present invention and device, in entire work process, upper and lower brachium pontis replaces chopping method and has reduced chopping frequency relatively, making power switch pipe open the heat that turn-off power loss produces all assigns on the power switch pipe of upper and lower brachium pontis, reduce the junction temperature of copped wave power switch pipe effectively, improved stability, the reliability of system, can effectively reduce the electromagnetic noise of motor simultaneously.Overcome the shortcoming that the power switch pipe heating is uneven, motor noise is big in the prior art switched reluctance motor control main circuit, can reduce the power switch pipe switching frequency relatively and simultaneously can reduce motor noise again, improved power switch pipe useful life greatly.
Description of drawings
Fig. 1 is a threephase switch reluctance motor main circuit schematic diagram;
Fig. 2 is a copped wave logic control device theory diagram of the present invention;
Fig. 3 is original logical signal copped wave schematic diagram;
Fig. 4 is a logical signal copped wave schematic diagram of the present invention.
Wherein: C electric capacity D1-D6 diode S1-S6 power switch pipe.
Embodiment
Further specify switched reluctance motor chopped wave logic control method of the present invention and device below in conjunction with accompanying drawing:
As shown in Figure 1, be the general main circuit schematic diagram of prior art threephase switch reluctance motor, the three phase mains input offers device for power switching after bridge rectifier and filter capacitor C, and set of power switches becomes asymmetric bridge type topology circuit structure.Each is by two power switch pipes, and two diodes and motor windings are connected into upper and lower two brachium pontis structures.Therefore, the power cell of threephase switch reluctance motor is made up of six power switch pipes and diode.The power switch pipe of the upper and lower brachium pontis in main circuit power unit connects the positive and negative busbar of main circuit respectively.By controlling the break-make of each mutually upper and lower brachium pontis power switch pipe, with the rotating speed that reaches switched reluctance motor and the purpose of torque control.
As shown in Figure 2, be the used copped wave control device of the present invention, form by logical process chip and three d type flip flops, P_A, P_B, P_C are threephase switch reluctance motor phase switching signal, three phase switching signals divide two-way to give the logical process chip, one the tunnel directly connects logical process chip I/O mouth, and another road phase switching signal is given three d type flip flops, directly gives the logical process chip through the pulse signal of d type flip flop output.Output signals UP _ the A of logical process chip, DN_A, UP_B, DN_B, UP_C, DN_C meet the power switch tube S 1-S6 of main circuit respectively, and directly the power controlling switching tube cut-offs.
As shown in Figure 3, the signal logic figure for not adopting when of the present invention, accompanying drawing has only been analyzed wherein A phase signals logic, and other facies principles are identical therewith.As can be seen from the figure, open in the cycle in that A is mutually whole, the main logic control signal is only controlled the brachium pontis power switch pipe and is realized copped wave in the cycle of opening, and following brachium pontis power switch pipe is in opening state always.Comparatively speaking, following brachium pontis has only on-state loss, and the power switch pipe caloric value is little; Last brachium pontis power switch pipe is bigger than switching loss under the condition with higher at switching frequency, and the power switch pipe caloric value is big, and junction temperature is too high, easily loss copped wave power switch pipe.
As shown in Figure 4, be the signal logic figure that adopts control method of the present invention.This figure has only analyzed wherein A phase logic figure, and other facies principles are identical therewith.Four road signals are arranged among the figure: phase switching signal P_A, phase switching signal are through signal P_A ', upper and lower brachium pontis chopping signal UP_A and DN_A behind the d type flip flop.Signal P_A ' changes its state according to the rising edge of phase switching signal P_A, and promptly when phase switching signal P_A became high level by low level, signal P_A ' level state reversed thereupon; When the logic control chip is implemented in signal P_A ' for high level by programming, makes A go up brachium pontis mutually and be in the copped wave state; When signal P_A ' is low level, makes A descend brachium pontis to be in the copped wave state mutually, thereby realized that upper and lower brachium pontis replaces the control mode of copped wave.
Can find out obviously that from figure in entire work process, upper and lower brachium pontis power switch pipe copped wave number of times is equal substantially.Do not adopt control method of the present invention to compare, effectively solved the uneven problem of upper and lower brachium pontis power switch pipe heating, better solved power switch pipe because the problem of the too high damage of junction temperature temperature, improved power switch pipe useful life greatly.
The above only is preferred embodiment of the present invention, is not to be the restriction of the present invention being made other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment did, still belongs to the protection range of technical solution of the present invention according to technical spirit of the present invention.
Claims (3)
1. switched reluctance motor chopped wave logic control method is characterized in that:
1.1 design a copped wave logic control circuit, comprise logical process chip and d type flip flop, threephase switch signal P_A, P_B, P_C link to each other with the logical process chip, be connected with the CP port of three d type flip flops respectively simultaneously, the D port of d type flip flop and
Port connects, and the Q port of d type flip flop inserts the logical process chip respectively;
1.2 the copped wave logic control circuit is according to switch magnetic group motor phase switching signal control master power switch pipe, when opening switched reluctance machines wherein one when promptly this phase switching signal is high level mutually, when if the logical process chip detection is high level to the signal of phase switching signal after d type flip flop output, then control this power switch pipe of going up brachium pontis mutually and be in the copped wave state, following brachium pontis power switch pipe is in conducting state always, when if the logical process chip detection is low level to the signal of phase switching signal after d type flip flop output, then control this power switch pipe that descends brachium pontis mutually and be in the copped wave state, last brachium pontis power switch pipe is in conducting state always.
2. switched reluctance motor chopped wave logic control method according to claim 1, it is characterized in that: described copped wave logic control circuit is applicable to the N phase switch reluctance motor, when control N phase switch reluctance motor, its phase switching signal corresponds to N, N signal divides two-way to be admitted to the logical process chip, one the tunnel sends into N d type flip flop respectively behind d type flip flop, and the N of a generation signal inserts the logical process chip again, and the logical process chip is directly sent on another road.
3. copped wave logic control device of realizing the described switched reluctance motor chopped wave logic control method of claim 1, it is characterized in that: comprise logical process chip and d type flip flop, threephase switch signal P_A, P_B, P_C link to each other with the logical process chip, be connected with the CP port of three d type flip flops respectively simultaneously, the D port of d type flip flop and
Port connects, and the Q port of d type flip flop inserts the logical process chip respectively, and the output signals UP _ A of logical process chip, DN_A, UP_B, DN_B, UP_C, DN_C meet the power switch tube S 1-S6 of main circuit respectively, and directly the power controlling switching tube cut-offs.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010197536A CN101860299A (en) | 2010-06-02 | 2010-06-02 | Chopped wave logic control method and device for switched reluctance motor |
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| CN201010197536A CN101860299A (en) | 2010-06-02 | 2010-06-02 | Chopped wave logic control method and device for switched reluctance motor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299673A (en) * | 2011-08-31 | 2011-12-28 | 东南大学 | Cooperative chopped wave starting circuit and method for switched reluctance motor |
| CN102412773A (en) * | 2011-12-23 | 2012-04-11 | 东南大学 | Control circuit of switched reluctance motor with double chopped wave limits |
| CN104201949A (en) * | 2014-09-22 | 2014-12-10 | 山东科汇电力自动化股份有限公司 | Real-time control method and system of switch reluctance motor turn-off angle |
| CN105897101A (en) * | 2015-02-16 | 2016-08-24 | 罗伯特·博世有限公司 | Method for generating electric rotating field in stator of motor, and device for implementing method |
| CN106100506A (en) * | 2016-06-30 | 2016-11-09 | 南京航空航天大学 | Double salient-pole electric machine drive system and multitube thereof interlock chop control technology |
| CN108448998A (en) * | 2018-04-11 | 2018-08-24 | 山东理工大学 | A kind of current control method of automatic decision switched reluctance machines current status |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4933621A (en) * | 1989-05-12 | 1990-06-12 | General Electric Company | Current chopping strategy for switched reluctance machines |
| US5742139A (en) * | 1996-07-26 | 1998-04-21 | Dana Corporation | Method and apparatus for reducing noise in a variable reluctance motor |
| US20020017891A1 (en) * | 2000-06-16 | 2002-02-14 | Asahi Seiko Kabushiki Kaisha | Energization control system of a motor |
-
2010
- 2010-06-02 CN CN201010197536A patent/CN101860299A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4933621A (en) * | 1989-05-12 | 1990-06-12 | General Electric Company | Current chopping strategy for switched reluctance machines |
| US5742139A (en) * | 1996-07-26 | 1998-04-21 | Dana Corporation | Method and apparatus for reducing noise in a variable reluctance motor |
| US20020017891A1 (en) * | 2000-06-16 | 2002-02-14 | Asahi Seiko Kabushiki Kaisha | Energization control system of a motor |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299673A (en) * | 2011-08-31 | 2011-12-28 | 东南大学 | Cooperative chopped wave starting circuit and method for switched reluctance motor |
| CN102412773A (en) * | 2011-12-23 | 2012-04-11 | 东南大学 | Control circuit of switched reluctance motor with double chopped wave limits |
| CN102412773B (en) * | 2011-12-23 | 2013-07-10 | 东南大学 | Control circuit of switched reluctance motor with double chopped wave limits |
| CN104201949A (en) * | 2014-09-22 | 2014-12-10 | 山东科汇电力自动化股份有限公司 | Real-time control method and system of switch reluctance motor turn-off angle |
| CN105897101A (en) * | 2015-02-16 | 2016-08-24 | 罗伯特·博世有限公司 | Method for generating electric rotating field in stator of motor, and device for implementing method |
| CN105897101B (en) * | 2015-02-16 | 2020-06-05 | 罗伯特·博世有限公司 | Method for generating an electric rotating field and device for carrying out said method |
| CN106100506A (en) * | 2016-06-30 | 2016-11-09 | 南京航空航天大学 | Double salient-pole electric machine drive system and multitube thereof interlock chop control technology |
| CN106100506B (en) * | 2016-06-30 | 2018-11-09 | 南京航空航天大学 | Double salient-pole electric machine drive system and its multitube interlock chop control technology |
| CN108448998A (en) * | 2018-04-11 | 2018-08-24 | 山东理工大学 | A kind of current control method of automatic decision switched reluctance machines current status |
| CN108448998B (en) * | 2018-04-11 | 2020-12-25 | 山东理工大学 | Current control method for automatically judging current state of switched reluctance motor |
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Inventor after: Xu Bingken Inventor after: Zhang Mingkui Inventor after: Xiong Lixin Inventor before: Zhang Mingkui Inventor before: Xiong Lixin Inventor before: Liu Zhihong |
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Application publication date: 20101013 |