CN201523350U - Control device of switched reluctance motor of electric vehicle - Google Patents
Control device of switched reluctance motor of electric vehicle Download PDFInfo
- Publication number
- CN201523350U CN201523350U CN2009203138501U CN200920313850U CN201523350U CN 201523350 U CN201523350 U CN 201523350U CN 2009203138501 U CN2009203138501 U CN 2009203138501U CN 200920313850 U CN200920313850 U CN 200920313850U CN 201523350 U CN201523350 U CN 201523350U
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- switched reluctance
- control device
- motor
- reluctance motor
- chip microcomputer
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Abstract
The utility model discloses a control device of a switched reluctance motor of an electric vehicle, and a working method thereof, relating to a motor. A switched reluctance motor system with two position sensors needs to relay on the position sensors when in every phase conversion, and has defects of low motor efficiency and low reliability as the position sensors have errors and inaccurate phase conversion points. The control device consists of a singlechip and a control circuit connected with the singlechip and is characterized by also comprising a position sensor fixedly arranged in the motor, and a memory unit connected with the singlechip, wherein the memory unit is detachably connected with a detection device used for detecting the phase error between the position sensor and the motor. In the technical scheme, an ascending edge or a descending edge of a square wave is taken as an initial point, and the phase conversion time is controlled by software, so that the control device has the advantages of improving the phase conversion accuracy, reducing the error of the position sensor, improving the efficiency of the switched reluctance motor, saving energy and the like; one position sensor is adopted, thus improving the product reliability while reducing the equipment cost.
Description
[technical field]
The utility model relates to a kind of motor, refers to a kind of electric motor car switched Reluctance Motor Control device especially.
[background technology]
Electric bicycle has mainly used brush direct current machine and permanent-magnet brushless DC electric machine as power source now, these two kinds of motors respectively have characteristics, there is the brush DC motor to have advantages such as speed regulating control is simple, but its electromechanics structural load, especially mechanical commutator becomes its bottleneck, therefore, there is short, shortcoming such as maintenance workload is big of life-span.Permanent-magnet brushless DC electric machine has that volume is little, control performance good, the efficient advantages of higher, but because the existence of permanent magnetism, the ambient temperature used, mechanical stress etc. is required harsh, and price is also expensive.
Switched reluctance machines has simple in structurely, and rotor core does not have motor windings, no permanent magnet, advantage such as fault-tolerant ability is strong, reliability is high, starting torque is big, and the scope of application enlarges day by day.Switched reluctance machines is according to there being position-sensor-free to be divided into the switched reluctance machines of position-sensor-free and the switched reluctance machines of tool position transducer, the switched reluctance machines of position-sensor-free wherein, its speed adjustable range is little, be suitable for the occasion that average rate is rotated, and the switched reluctance machines of tool position transducer, its speed adjustable range is big, is applicable to electric motor car.The switched reluctance machines of tool position transducer generally adopts two position transducers to be used for commutation, and it exists electrical error of null position, duty cycle error and phase error; Wherein mainly to show be that the hopping edge and the ideal position signal of square-wave signal of reflection each phase winding maximum induction and minimum inductance position exists error to electrical error of null position, and it is located when mounted and forbidden to cause owing to rotating disk and light groove; The duty ratio that takes the form of square-wave signal of duty cycle error no longer is 0.5, it is mainly derived from two aspects: the one, and rotating disk adds the tooth in man-hour, the groove calibration is inaccurate, the 2nd, the phototransistor load circuit designs rationally causes opening with the turn-off time of phototransistor inconsistent inadequately, the error that the former causes belongs to the absolute angle error, show in the position signalling it is that duty cycle error does not change with change in rotational speed, the error that the latter causes belongs to the absolute time error, show in the position signalling it is that duty cycle error changes along with change in rotational speed, and rotating speed is high more, and error is big more; Have error between phase difference and the ideal position signal between the square-wave signal that takes the form of two-way reflection rotor-position signal of phase error, this error is mainly inaccurate from the angle between two light grooves.In the switched reluctance motor system of tool two positions transducer, each commutation all is to rely on position transducer, and it is because of existing error, and commutation point is inaccurate, has the shortcoming that electric efficiency is low, reliability is low.
[utility model content]
The technical assignment of the technical problems to be solved in the utility model and proposition is that the prior art scheme is improved and improved, a kind of electric motor car switched Reluctance Motor Control device is provided, improve product reliability to reach, reduced sensor errors, improve the efficient of switched reluctance machines, the purpose of energy savings.For this reason, the utility model is taked following technical scheme:
A kind of electric motor car switched Reluctance Motor Control device, comprise single-chip microcomputer, the control circuit that is connected with single-chip microcomputer, it is characterized in that: it comprises that also one is fixedly arranged on the position transducer in the motor, the memory cell that is connected with single-chip microcomputer, and described memory cell removably connects a checkout gear that is used for phase error between detection position transducer and the motor.When detecting, checkout gear is connected with position transducer, and checkout gear can take off after finishing.Memory cell is used to store phase error, single-chip microcomputer calculates the commutation time according to the signal and the phase error of position transducer, the commutation time can be by the timer timing of single-chip microcomputer inside, commutation point is accurate, has reduced the error of position transducer, has improved the efficient of switched reluctance machines, advantages such as energy savings, simultaneously, reduced by 1 position transducer, improved product reliability when reducing cost.
As the further of said apparatus improved and replenish, the utility model also comprises following additional technical feature:
Described position transducer links to each other with single-chip microcomputer by a position signalling processing unit.The pulse signal of position transducer collection is converted into the discernible square-wave signal of single-chip microcomputer.
Described position transducer comprises optical pulse generator and is fixed in the rotating disk of rotor.
Described optical pulse generator is installed on the motor stator.
Described rotating disk is in the form of annular discs, the uniform a plurality of teeth groove that equate with rotor salient pole quantity of its circumferencial direction.Rotating disk is along with rotor rotates, and when the teeth groove of optical pulse generator and rotating disk is relative, can produce a pulse.
[description of drawings]
Fig. 1 is the utility model structure principle chart;
Fig. 2 is the utility model workflow diagram.
[embodiment]
Below in conjunction with Figure of description the technical solution of the utility model is described in further detail.
As shown in Figure 1, the utility model comprises control circuit, a memory cell that places switched reluctance machines interior location transducer, the position processing unit that is connected with position transducer, the single-chip microcomputer that is connected with the position processing unit and be connected with single-chip microcomputer, and wherein control circuit comprises power tube and storage battery.Power tube is connected with switched reluctance machines, single-chip microcomputer and storage battery, and storage battery reduces chip by voltage and is connected with single-chip microcomputer, constitutes control device.
As shown in Figure 2, be that 24 utmost points, stator are that 32 utmost points, 4 phase motors are that example further specifies electric bicycle switched reluctance machines rotation Control work flow process to control a rotor:
1) send in memory cell by the phase error between checkout gear detection position transducer and the switched reluctance machines, and with this error;
2) position transducer and switched reluctance machines phase error in the single-chip microcomputer elder generation reading cells;
3) position transducer passes through the square-wave signal that the position signalling processing unit is processed into position signalling standard;
4) calculate present speed: switched reluctance machines has 24 high-low levels in the process of rotating a circle, single-chip microcomputer reads the high-low level number of times in per 200 milliseconds, can calculate present speed;
5) according to present speed, calculating commutation interval time and phase error needs the make-up time;
6) single-chip microcomputer picks up counting at rising edge, starts timer, and timer time is the phase error compensation time;
7) when this regularly arrives, carry out the commutation first time, start timer simultaneously, timer time is the time that commutation once needs;
8) when the time arrives, carry out the commutation second time, start timer simultaneously, timer time is the time that commutation once needs;
9) once more when the time arrives, carry out commutation for the third time, start timer simultaneously, timer time is the time that commutation once needs;
10) at last when the time arrives, carry out the 4th commutation, the timeing closing device is a rising edge up to the position transducer signal of coming, single-chip microcomputer was got back to step 6 control motor and is rotated further according to commutation interval time and make-up time that current rotating speed recomputates.
24 utmost point motors rotate and a week to produce 24 high-low levels, i.e. 24 square-wave cycle, and commutation is four times in a square-wave cycle, and promptly motor rotates a week with commutation 96 times.The speed of previous square-wave cycle is used to calculate commutation interval time and make-up time as the computational speed of next square-wave cycle.
Claims (5)
1. electric motor car switched Reluctance Motor Control device, comprise single-chip microcomputer, the control circuit that is connected with single-chip microcomputer, it is characterized in that: it comprises that also one is fixedly arranged on the position transducer in the motor, the memory cell that is connected with single-chip microcomputer, and described memory cell removably connects a checkout gear that is used for phase error between detection position transducer and the motor.
2. a kind of electric motor car switched Reluctance Motor Control device according to claim 1 is characterized in that: described position transducer links to each other with single-chip microcomputer by a position signalling processing unit.
3. a kind of electric motor car switched Reluctance Motor Control device according to claim 2, it is characterized in that: described position transducer comprises optical pulse generator and is fixed in the rotating disk of rotor.
4. a kind of electric motor car switched Reluctance Motor Control device according to claim 3, it is characterized in that: described optical pulse generator is installed on the motor stator.
5. a kind of electric motor car switched Reluctance Motor Control device according to claim 3, it is characterized in that: described rotating disk is in the form of annular discs, the uniform a plurality of teeth groove that equate with rotor salient pole quantity of its circumferencial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203138501U CN201523350U (en) | 2009-11-02 | 2009-11-02 | Control device of switched reluctance motor of electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203138501U CN201523350U (en) | 2009-11-02 | 2009-11-02 | Control device of switched reluctance motor of electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201523350U true CN201523350U (en) | 2010-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203138501U Expired - Fee Related CN201523350U (en) | 2009-11-02 | 2009-11-02 | Control device of switched reluctance motor of electric vehicle |
Country Status (1)
| Country | Link |
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| CN (1) | CN201523350U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015172455A1 (en) * | 2014-05-16 | 2015-11-19 | 中国矿业大学 | Method for controlling switched reluctance motor without rotor position sensor |
| CN105459852A (en) * | 2015-12-09 | 2016-04-06 | 北京新能源汽车股份有限公司 | Ramp starting method and device for driving electric automobile by switch reluctance motor |
| CN108011559A (en) * | 2016-11-01 | 2018-05-08 | 南京德朔实业有限公司 | Electric tool and control method thereof |
| 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 |
| CN112072963A (en) * | 2020-08-13 | 2020-12-11 | 惠州拓邦电气技术有限公司 | Electric tool and commutation control method thereof |
-
2009
- 2009-11-02 CN CN2009203138501U patent/CN201523350U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015172455A1 (en) * | 2014-05-16 | 2015-11-19 | 中国矿业大学 | Method for controlling switched reluctance motor without rotor position sensor |
| CN105459852A (en) * | 2015-12-09 | 2016-04-06 | 北京新能源汽车股份有限公司 | Ramp starting method and device for driving electric automobile by switch reluctance motor |
| CN105459852B (en) * | 2015-12-09 | 2017-12-19 | 北京新能源汽车股份有限公司 | Ramp starting method and device for driving electric automobile by switch reluctance motor |
| CN108011559A (en) * | 2016-11-01 | 2018-05-08 | 南京德朔实业有限公司 | Electric tool and control method thereof |
| 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 |
| CN112072963A (en) * | 2020-08-13 | 2020-12-11 | 惠州拓邦电气技术有限公司 | Electric tool and commutation control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100707 Termination date: 20111102 |