CN106411219A - Switched reluctance motor control device for new energy automobile - Google Patents
Switched reluctance motor control device for new energy automobile Download PDFInfo
- Publication number
- CN106411219A CN106411219A CN201611008366.9A CN201611008366A CN106411219A CN 106411219 A CN106411219 A CN 106411219A CN 201611008366 A CN201611008366 A CN 201611008366A CN 106411219 A CN106411219 A CN 106411219A
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- CN
- China
- Prior art keywords
- switched reluctance
- motor
- control device
- fpga chip
- reluctance motor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/08—Reluctance motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention provides a switched reluctance motor control device for a new energy automobile, and relates to a motor. A switched reluctance motor system having two position sensors depends on the position sensors for commutation each time, and has the defects of low motor efficiency and low safety and reliability since the position sensors have errors and commutation points are not accurate. The switched reluctance motor control device comprises a DSP chip, an FPGA chip connected with the DSP chip and a control circuit connected with the FPGA chip. The switched reluctance motor control device is characterized in that the control device also comprises the position sensors fixedly arranged in the motor, and a position processing unit connected with the FPGA chip. The FPGA chip is detachably connected with a detection device for detecting phase error between the position sensors and the motor. With a rising edge or a falling edge of a square wave being as a start point, each phase compensation is finished on dependence of a software timer, thereby improving compensation precision, reducing errors of the position sensors, improving efficiency of the switched reluctance motor, improving endurance mileage of a vehicle and saving energy and the like.
Description
Technical field
The present invention relates to a kind of motor control assembly, espespecially a kind of new-energy automobile control device of switched reluctance motor.
Background technology
New-energy automobile is mainly used threephase asynchronous machine and permanent-magnet brushless DC electric machine as power source, both now
Motor respectively has feature, and threephase asynchronous machine has speed regulating control simply, low cost and other advantages, but its electric efficiency is low, and energy consumption is big
The shortcomings of.Permanent-magnet brushless DC electric machine has the advantages that small volume, control performance be good, efficiency high, but the presence due to permanent magnetism, right
The ambient temperature of application, mechanical stress etc. require harshness, and price is also expensive；
Switched reluctance machines, it is simple to have a structure, and rotor core no machine winding, no permanent magnet, fault-tolerant ability are strong, reliability
The advantages of height, starting torque are big, range expanding day.Switched reluctance machines are divided into no position according to there being position-sensor-free
The switching magnetic-resistance electricity of the switched reluctance machines of sensor and the switched reluctance machines of tool position sensor, wherein position-sensor-free
Machine, its speed adjustable range is little, is suitable for the occasion of average rate rotation, and has the switched reluctance machines of position sensor, its speed adjustable range
Big it is adaptable to electric motor car.The switched reluctance machines of tool position sensor, typically adopt two position sensors to be used for commutation, its
There is the error of zero, duty cycle error and phase error；Wherein the error of zero mainly shows is to reflect each phase winding maximum induction
There is error with the hopping edge of the square-wave signal of minimum inductance position with ideal position signal, it is because rotating disk and light groove are in peace
During dress, positioning is forbidden to cause；The dutycycle taking the form of square-wave signal of duty cycle error is no longer 0.5, its main source
In two aspects：One is that during rotating disk processing, tooth, groove indexing are inaccurate, and two is that phototransistor load circuit designs are not reasonable and lead
Opening of cause phototransistor is inconsistent with the turn-off time, and the error that the former causes belongs to absolute angle error, shows position
It is that duty cycle error does not change with the change of rotating speed in signal, the error that the latter causes belongs to Absolute timing errors, shows
It is that duty cycle error changes with the change of rotating speed in position signalling, and rotating speed is higher, error is bigger；The table of phase error
Show and there is error between phase contrast and ideal position signal between the square-wave signal that form is two-way reflection rotor-position signal, this
Error is forbidden essentially from the angle between two light grooves.In the switched reluctance motor system of tool two positions sensor, it is because of position
There is error in confidence number, cause commutation point inaccurate, the shortcoming that electric efficiency is low, reliability is low.
Content of the invention
The technical problem to be solved in the present invention and the technical assignment proposing are prior art to be improved and is improved,
A kind of new-energy automobile control device of switched reluctance motor and method are provided, improve product reliability, reduce biography to reach
The error of sensor, improves the efficiency of switched reluctance machines, improves vehicle course continuation mileage, the purpose of energy saving.For this reason, the present invention
Take technical scheme below：
New-energy automobile control device of switched reluctance motor, the fpga chip being connected with dsp chip including dsp chip and
Fpga chip connect control circuit it is characterised in that：It also includes a position sensor being fixedly arranged in motor and FPGA core
The position processing unit that piece connects, described fpga chip detachably connected is used between test position sensor and motor
The detection means of phase error.Detection when, detection means is connected with position sensor, after the completion of detection means can take off.
Fpga chip is used for storing phase error, and the signal according to position sensor and phase error calculate switched reluctance machines and turn
Sub- original phase, the phase error compensation time accurately, can be reduced by the intervalometer timing within fpga chip, phase compensation point
The error of position sensor, improves the advantages of efficiency of switched reluctance machines, energy saving.
As improving further and supplementing to said apparatus, present invention additionally comprises following additional technical feature：
Described position sensor is connected with fpga chip by a position signalling processing unit.The arteries and veins that position sensor is gathered
Rush signal and be converted into the discernible square-wave signal of fpga chip.
Described position sensor includes optical pulse generator and the rotating disk being fixed in rotor.
Described optical pulse generator is arranged on motor stator.
Described rotating disk is in the form of annular discs, its circumferencial direction uniformly a plurality of teeth groove equal with rotor number of salient poles.
Rotating disk rotates with rotor, when optical pulse generator and rotating disk teeth groove relative to when, you can one pulse of generation.
New-energy automobile control device of switched reluctance motor comprises the following steps：
1) by phase error between detection means test position sensor and switched reluctance machines, and by this error send in
In fpga chip.
2) in motor rotation process, the output information of position sensor is converted into by a position signalling processing unit
Square-wave signal, and be connected with fpga chip.
3) computing module in fpga chip rotates a circle the square wave number of generation and real-time square wave letter according to motor
Number, calculate the revolution of current motor, utilize motor rotations to calculate rising edge of a pulse and trailing edge interval time and and phase place simultaneously
The error corresponding compensation time.
4) fpga chip is according to square-wave signal rising edge of a pulse and trailing edge interval time and number of motor phases utilization timing
Device carries out phase compensation, and reduction passes to the coded sample mouth of DSP with the synchronous encoded signal of switched reluctance machines position of rotation,
Until reach square-wave signal terminating, again according to step 3 for one week) determine rising edge of a pulse and trailing edge interval time and and phase place
The error corresponding compensation time.
5) dsp chip constantly rotates according to the real-time coding Signal-controlled switch reluctance motor that fpga chip transmission comes.
As improving further and supplementing to said apparatus, present invention additionally comprises following additional technical feature：
Rising edge and trailing edge below the position sensor of described fpga chip preservation and switched reluctance machines phase error is reference
Point.
Fpga chip starts timing in the rising edge of square-wave signal and trailing edge, starts intervalometer, and timer time is phase
The position error compensation time；When this timing reaches, carry out commutation, and the rising edge after commutation and trailing edge signal transmission are given
Its coded sample of coded sample confession of dsp chip.
Beneficial effect：Using the rising edge of square wave and trailing edge as starting point, each commutation is all to rely on software timer
Come to complete, improve commutation precision, decrease the error of position sensor, improve the efficiency of switched reluctance machines, save energy
The advantages of source；
【Brief description】
Fig. 1 is present configuration figure.
Fig. 2 is flow chart of the present invention.
Fig. 3 is coding versus' figure of position processing unit exports coding signal and normal encoding signal when phase place is advanced.
Fig. 4 is coding versus' figure of position processing unit exports coding signal and normal encoding signal during delayed phase.
【Specific embodiment】
Below in conjunction with Figure of description, technical scheme is described in further detail.
As shown in figure 1, the present invention include control circuit, one be placed in switched reluctance machines internal position sensor and position
Put fpga chip and the DSP being connected with fpga chip that the position processing unit of sensor connection is connected with position processing unit
Chip, wherein control circuit include power tube and accumulator.Power tube is connected with switched reluctance machines, fpga chip and accumulator
Connect, fpga chip and dsp chip are connected to form control device.
As shown in Fig. 2 to control a rotor to be that 24 poles, stator are 16 poles, further illustrate new forms of energy vapour as a example 3 phase motors
The control device of automotive controls reluctance motor：
1) by phase error between detection means test position sensor and switched reluctance machines, and by this error send in
In fpga chip.
2) position signalling is processed into the square-wave signal of standard through position signalling processing unit by a position sensor.
3) square-wave signal after processing is sent to the coded sample mouth of fpga chip by position signalling processing unit.
4) fpga chip calculates present speed：Switched reluctance machines, during rotating a circle, have 24 height electricity
Flat, fpga chip, with the crystal oscillator clock number of square-wave signal rising edge and trailing edge interval, can obtain interval time and calculate
Go out present speed.
5) according to present speed, when calculating square-wave signal rising edge and decline T interval time and phase error need to compensate
Between △ T.
6) fpga chip, according to the phase error between detection means test position sensor and switched reluctance machines, is sentenced
Disconnected phase place is advanced or delayed, selects different compensation ways to carry out phase compensation with this.
7) when phase place is advanced, carry out phase compensation using t=t0+ △ T, it compensates as pulse edge in the same direction.As in t0
Carve fpga chip input and a rising edge is detected, then pass through fpga chip calculating rising edge of a pulse and trailing edge interval time
T and phase error need compensation time △ T, and intervalometer is reset, when timer count to time △ T, by this rising edge
Export fpga chip outfan.
When delayed phase, carry out phase compensation using t=t0+T- △ T, it compensates as reverse impulse edge.As in t0
Carve fpga chip input and a rising edge is detected, then pass through fpga chip calculating rising edge of a pulse and trailing edge interval time
T and phase error need compensation time △ T, and intervalometer is reset, when timer count is to time T- △ T, trailing edge is defeated
Go out to fpga chip outfan, otherwise trailing edge is detected and then export rising edge；
Wherein, t0 is the currently detected porch time；
T is the output time compensating output pulse edge；
T is currently detected rising edge of a pulse and trailing edge interval time；
△ T needs the compensation time for phase error.
8) the coding letter after compensating passes to the coded sample mouth of DSP.
9) dsp chip constantly rotates according to the real-time coding Signal-controlled switch reluctance motor that fpga chip transmission comes.
Produce 24 low and high levels, i.e. 24 square-wave cycle when 24 pole motors rotate one week.The speed of previous square-wave cycle
Degree is used for calculating square-wave signal rising edge and decline interval time and compensation time as the calculating speed of next square-wave cycle.
Claims (9)
1. a kind of new-energy automobile control device of switched reluctance motor, the FPGA core being connected with dsp chip including dsp chip
Control circuit that piece is connected with fpga chip it is characterised in that：It also includes a position sensor being fixedly arranged in motor, institute
The fpga chip detachably connected one stated is used for the detection means of phase error between test position sensor and motor.
2. new-energy automobile control device of switched reluctance motor according to claim 1 it is characterised in that：Described position
Put sensor to be connected with fpga chip by a position signalling processing unit.
3. new-energy automobile control device of switched reluctance motor according to claim 2 it is characterised in that：Described position
Put sensor and include optical pulse generator and the rotating disk being fixed in rotor.
4. new-energy automobile control device of switched reluctance motor according to claim 3 it is characterised in that：Described light
Electric pulse generator is arranged on motor stator.
5. new-energy automobile control device of switched reluctance motor according to claim 3 it is characterised in that：Described turns
Disk is in the form of annular discs, its circumferencial direction uniformly a plurality of teeth groove equal with rotor number of salient poles.
6. new-energy automobile control device of switched reluctance motor according to claim 1 it is characterised in that it include with
Lower step：
1) by phase error between detection means test position sensor and switched reluctance machines, and by this error send in
In fpga chip；
2) in motor rotation process, the output information of position sensor is converted into square wave letter by a position signalling processing unit
It is connected with fpga chip after number；
3) computing module in fpga chip rotates a circle the square wave number of generation and real-time square-wave signal according to motor, meter
Calculate the revolution of current motor, utilize motor rotations to calculate the compensation time corresponding with phase error simultaneously；
4) fpga chip determines with the synchronous encoded signal of motor position of rotation according to square-wave signal and the time that compensates, and by this
Encoded signal passes to the coded sample mouth of DSP, until it reaches square-wave signal terminates, again according to step 3 for one week) determine compensation
Time；
5) dsp chip constantly rotates according to the real-time coding Signal-controlled switch reluctance motor that fpga chip transmission comes.
7. new-energy automobile control device of switched reluctance motor according to claim 6 it is characterised in that：Described FPGA
Edge and trailing edge is risen for reference point below the position sensor that chip preserves and switched reluctance machines phase error.
8. new-energy automobile control device of switched reluctance motor according to claim 7 it is characterised in that：Fpga chip
Start timing in the rising edge of square-wave signal and trailing edge, start intervalometer, timer time is the phase error compensation time；When
When this timing reaches, go back original motor original coding pulse, and the rising edge after commutation and trailing edge signal transmission are given DSP core
Its coded sample of coded sample confession of piece.
9. new-energy automobile control device of switched reluctance motor according to claim 6 it is characterised in that：Dsp chip
According to the next encoded signal of fpga chip transmission as the real-time coding signal of motor, switched reluctance machines rotating speed is determined with this
With the position of rotation of rotor, and then controlling switch reluctance motor constantly rotates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611008366.9A CN106411219A (en) | 2016-11-16 | 2016-11-16 | Switched reluctance motor control device for new energy automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611008366.9A CN106411219A (en) | 2016-11-16 | 2016-11-16 | Switched reluctance motor control device for new energy automobile |
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| Publication Number | Publication Date |
|---|---|
| CN106411219A true CN106411219A (en) | 2017-02-15 |
Family
ID=59230739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611008366.9A Pending CN106411219A (en) | 2016-11-16 | 2016-11-16 | Switched reluctance motor control device for new energy automobile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108462415A (en) * | 2018-02-09 | 2018-08-28 | 苏州仙崴机电有限公司 | A kind of switched reluctance machines position information detection method based on single location sensor |
| CN109327177A (en) * | 2018-10-21 | 2019-02-12 | 成都署信科技有限公司 | A kind of driving method of switched reluctance machines power semiconductor switch |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694980A (en) * | 2009-10-30 | 2010-04-14 | 卧龙电气集团股份有限公司 | Control device and operating method of bicycle switched reluctance motor |
| CN202171461U (en) * | 2011-08-24 | 2012-03-21 | 上海三一精机有限公司 | High-power high-speed subdivision unit of encoder |
| CN203151413U (en) * | 2013-04-01 | 2013-08-21 | 金陵科技学院 | All-digital speed setting controller provided with switch reluctance machine |
-
2016
- 2016-11-16 CN CN201611008366.9A patent/CN106411219A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694980A (en) * | 2009-10-30 | 2010-04-14 | 卧龙电气集团股份有限公司 | Control device and operating method of bicycle switched reluctance motor |
| CN202171461U (en) * | 2011-08-24 | 2012-03-21 | 上海三一精机有限公司 | High-power high-speed subdivision unit of encoder |
| CN203151413U (en) * | 2013-04-01 | 2013-08-21 | 金陵科技学院 | All-digital speed setting controller provided with switch reluctance machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108462415A (en) * | 2018-02-09 | 2018-08-28 | 苏州仙崴机电有限公司 | A kind of switched reluctance machines position information detection method based on single location sensor |
| CN109327177A (en) * | 2018-10-21 | 2019-02-12 | 成都署信科技有限公司 | A kind of driving method of switched reluctance machines power semiconductor switch |
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Application publication date: 20170215 |