CN202798550U - Motor and controller thereof - Google Patents
Motor and controller thereof Download PDFInfo
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- CN202798550U CN202798550U CN2012203887507U CN201220388750U CN202798550U CN 202798550 U CN202798550 U CN 202798550U CN 2012203887507 U CN2012203887507 U CN 2012203887507U CN 201220388750 U CN201220388750 U CN 201220388750U CN 202798550 U CN202798550 U CN 202798550U
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Abstract
The utility model provides a motor and a controller thereof, wherein the controller comprises a single chip micro-computer; the single chip micro-computer outputs a control signal to a power driving circuit; the power driving circuit outputs a driving signal to the motor according to the received control signal; a current sampling circuit is arranged for sampling a current signal of the motor and outputting the sampled current signal to the single chip micro-computer, wherein the single chip micro-computer is a single chip micro-computer with a core of a magnetic field oriented control circuit; the motor is provided with a stator and a rotor; and the controller is also arranged. The motor and the controller thereof disclosed by the utility model are capable of reducing development difficulty of the motor and the controller and shortening development time of the motor and the controller; therefore, the motor and the controller are beneficial to being realized.
Description
Technical field
The utility model relates to machine field, the motor that especially relates to a kind of electric machine controller and have sort controller.
Background technology
Brshless DC motor possesses the advantage of continuous speed adjustment because of it, more and more is subject to people's favor, has been widely used in the various electric equipments.Brshless DC motor has stator and can be with respect to the rotor of stator rotation, and is provided with a controller that is used for the control machine operation, and the structured flowchart of controller as shown in Figure 1.
Controller has single-chip microcomputer 11, and single-chip microcomputer 11 is can programme and externally export the device of control signal, and it receives the control signal of outside input.Single-chip microcomputer 11 is according to the control signal production burst modulation signal that receives, i.e. pwm signal, and export the pwm signal that generates to power driving circuit 12 as control signal.
Power driving circuit 12 can be integrated intelligent power circuit or the power circuit that is made of discrete component, no matter be intelligent power circuit or the power circuit that is consisted of by discrete component, all have a plurality of controlled power tubes, such as thyristor or IGBT etc., power tube is break-make under the control of pwm signal, and to the motor M output drive signal, drive motors work, and by the rotation of rotor drive armature spindle, outwards outputting power.
Controller also has current sampling circuit 13 and circuit overcurrent protection 14, and current sampling circuit 13 is used for the current signal of the three-phase bus of the motor M of flowing through is sampled, and the signal of sampling is transferred to single-chip microcomputer 11.To the sample current signal of motor M three-phase bus of circuit overcurrent protection 14; and judge whether electric current is excessive; and when electric current is excessive, send signal to single-chip microcomputer 11; stopped to power drive electric current 12 output control signals by single-chip microcomputer 11, continue excessive and affect the operation of motor M with the electric current of the motor M of avoiding flowing through.
Power circuit 15 is for the power supply of the device in controller, as providing low-voltage DC to single-chip microcomputer 11, power driving circuit 12.
Single-chip microcomputer 11 is cores of controller, be used for the operation of control motor M, existing motor control method comprises trapezoidal control, scalar control and field orientation control (Field-Oriented Control, FOC) etc., wherein, field orientation control is control method now comparatively commonly used, and it is fit to have the application of following hsrdware requirements: low noise, low torque ripple and require good torque control in larger velocity interval.
The realization of existing field orientation control method is motor manufacturer by realization that single-chip microcomputer or 11 digital signal processors (DSP) programmes voluntarily, aspect the flexibility of application certain advantage is being arranged, and the flow direction of overall data is had better assurance.But programming realizes that the field orientation control method is higher to the performance requirement of single-chip microcomputer to integral body in debug process, and general single-chip microcomputer or digital signal processor are difficult to finish.In addition, the arithmetic programming of field orientation control is crossed the range request height, and single-chip microcomputer need to be finished the functions such as signal reception that control, current sample, user to power driving circuit input simultaneously, and the programming difficulty is large, the cycle is long.Because field orientation control control method also needs the optimization of parameter is carried out in different loads, if use digital signal processor programming or common chip microcontroller, the increase of parameter modification and function program causes program to make mistakes easily, and the modification amount is large.
Summary of the invention
Main purpose of the present utility model provides a kind of electric machine controller of easy realization field orientation control method.
Another purpose of the present utility model provide a kind of avoid programming voluntarily realize the motor of field orientation control method.
For realizing main purpose of the present utility model, the electric machine controller that the utility model provides has single-chip microcomputer, single-chip microcomputer is exported control signal to power driving circuit, power driving circuit according to the control signal that receives to the motor output drive signal, and be provided with current sampling circuit, the current signal of sampling motor, and export the current signal of sampling to single-chip microcomputer, wherein, this single-chip microcomputer is the single-chip microcomputer with field orientation control circuit kernel.
By such scheme as seen, because the sampling of the single-chip microcomputer of controller has the single-chip microcomputer of field orientation control circuit kernel, it is integrated field orientation control circuit in the single-chip microcomputer, therefore need not single-chip microcomputer programmed and realize field orientation control, the optimization that only need to carry out to the motor of different loads parameter gets final product, the controller development time is short, difficulty is little, is conducive to the realization of controller.
A preferred scheme is the gain circuitry that current sampling circuit has sampling resistor and is connected to the sampling resistor output.
This shows that current sampling circuit amplifies current signal by gain circuitry after by sampling resistor the current signal of bus being sampled, and regulates easily the size of current signal, thereby be conducive to single-chip microcomputer current signal is processed.
Further scheme is; electric machine controller also comprises the current foldback circuit that is connected between motor and the single-chip microcomputer; current foldback circuit has voltage comparator; an input of voltage comparator receives the sampled level signal of motor; another input receives reference voltage signal, and the output of voltage comparator is to the single-chip microcomputer outputs level signals.
As seen; controller compares with reference voltage after the current signal of motor bus is sampled and converted level signal to by the overcurrent protection current convection; when judging that electric current is excessive to the single-chip microcomputer output signal; the electric current of bus of avoiding flowing through continues excessive, thereby avoids affecting the operation of motor.
For realizing another purpose of the present utility model, the motor that the utility model provides has stator and rotor, and be provided with controller, and controller has single-chip microcomputer, and single-chip microcomputer is exported control signal to power driving circuit, power driving circuit according to the control signal that receives to the motor output drive signal, and be provided with current sampling circuit, the current signal of sampling motor, and export the current signal of sampling to single-chip microcomputer, wherein, this single-chip microcomputer is the single-chip microcomputer with field orientation control circuit kernel.
By such scheme as seen, the controller of motor uses the single-chip microcomputer with field orientation control circuit kernel, avoid single-chip microcomputer programmed voluntarily and realize field orientation control, thereby save the development difficulty of controller and shorten the development time, and be conducive to realize the control of motor.
Description of drawings
Fig. 1 is the electric theory diagram of existing electric machine controller.
Fig. 2 is the theory diagram of the utility model electric machine controller embodiment.
Fig. 3 is the theory diagram of single-chip microcomputer internal structure among the utility model electric machine controller embodiment.
Fig. 4 is the electrical schematic diagram of current foldback circuit among the utility model electric machine controller embodiment.
Fig. 5 is the electrical schematic diagram of current sampling circuit and current sample amplifying circuit among the utility model electric machine controller embodiment.
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment
The motor of present embodiment has a housing, and stator and rotor are installed in housing, also is provided with the controller for the control machine operation on motor, and the theory diagram of controller as shown in Figure 2.
Controller has single-chip microcomputer 21, power driver module 22, current sampling circuit 23, current foldback circuit 24 and power circuit 25; single-chip microcomputer 21 is to adopt the single-chip microcomputer with field orientation control circuit kernel; as the IRMCK171 type single-chip microcomputer that adopts the U.S. international rectification company to develop, they can be to power driving circuit 22 output control signals.
Power driving circuit 22 has a plurality of power tubes, conducting or cut-off under the pwm signal as control signal of single-chip microcomputer 21 outputs is controlled, and to the motor M output drive signal, drive motors M work.
The current signal of each phase bus of current foldback circuit 24 sampling motor M, and judge whether electric current is excessive sends signal to single-chip microcomputer 11 when judging that the motor M bus current is excessive, the bus current of avoiding motor M is lasting excessive and affect the work of motor M.
Power circuit 25 is used for providing low-voltage dc power supply to single-chip microcomputer 21, power driving circuit 22, satisfies the need of work of single-chip microcomputer 21, power driver module 22.
Referring to Fig. 3, single-chip microcomputer 21 is IRMCK171 type single-chip microcomputer, it has programmable control circuit kernel 31, random access memory 32, field orientation control circuit kernel 33 and current sample amplifying circuit 34, wherein programmable control circuit kernel 31 can by user's write-in program voluntarily, be realized optimizations such as parameters.Field orientation control circuit kernel 33 is integration modules, can carry out computing and calculate the position of rotor the parameter of input, thereby calculate the rotating speed of rotor.Simultaneously, field orientation control circuit kernel 33 calculates and generates pwm signal as control signal and to motor M output, the work of control motor M also according to the signal of input.
Random access memory 32 is used for the parameter that interim storage single-chip microcomputer 21 work are used, and programmable control circuit kernel 31 and field orientation control circuit kernel 33 all can be accessed random access memory 32.Be provided with voltage comparator in the circuit sampling amplifying circuit 34, be used for the signal of telecommunication of input is compared judgement, judge whether the signal voltage value of input is too high.
Referring to Fig. 4, current foldback circuit 24 has three sampling resistor R1, R2, R3, and three-phase bus U, V, the W with motor M is connected in series respectively, the current signal on the sampling three-phase bus.And current foldback circuit 24 converts the current signal of motor bus to voltage signal by resistance R 4, R5, R6, R9, thereby forms the sampled level signal, inputs to the positive input of voltage comparator U1.The reverse input end of voltage comparator U1 receives reference voltage, and reference voltage is obtained through resistance R 7 and resistance R 10 dividing potential drops by DC power supply VCC.Voltage comparator U1 compares sampled level signal and the reference voltage that receives, output high level signal or low level signal, and result's level signal outputs to single-chip microcomputer 21 as a comparison.
When the bus current of motor M is excessive, sampled level signal voltage value through resistance R 4, R5, R6, R9 is higher, when the magnitude of voltage of sampled level signal is higher than reference voltage, voltage comparator output high level signal, single-chip microcomputer 21 judges that namely bus current is excessive, stop to power driving circuit 22 output pwm signals, avoid the electric current on the bus to continue excessive.
Current sample amplifying circuit 34 also is provided with a voltage follower U3, voltage follower U3 receives inner voltage, output connects the bleeder circuit that is comprised of resistance R 12, R14, R15, the voltage of voltage follower U3 output is used for the error of the voltage generation of small electromotor M bus by the bus output bucking voltage of bleeder circuit to motor M.
Shown in Figure 5 be current sampling circuit 23 corresponding to the electrical schematic diagram of a phase bus, during actual the use, current sampling circuit 23 has two groups of gain circuitries, is connected to the output of two sampling resistors, and to single-chip microcomputer 21 output signals.Because the vector of three groups of electric currents and be zero, single-chip microcomputer 21 can calculate the value of electric current on the 3rd bus according to the current value of two buses.Simultaneously, the bleeder circuit of current sampling circuit 23 also has two groups, receives respectively the signal of telecommunication of two voltage follower outputs of single-chip microcomputer, is used for the voltage error of each phase bus of compensation.
By such scheme as seen, the controller of motor uses the single-chip microcomputer of built-in field orientation control circuit kernel, has avoided single-chip microcomputer programmed voluntarily and has realized the trouble of field orientation control, and the development difficulty of controller reduces, and the development time also shortens.And, also be provided with the programmable control circuit kernel in the single-chip microcomputer, make things convenient for the user to programme voluntarily and realize other control function.
Certainly, above-described embodiment only be the utility model preferred embodiment, during practical application more change can also be arranged, for example, use other single-chip microcomputers with field orientation control circuit kernel to substitute IRMCK171 type single-chip microcomputer; Perhaps, use other controllable devices to substitute thyristor etc. in the power driving circuit, these changes can't affect enforcement of the present utility model.
It is emphasized that at last the utility model is not limited to above-mentioned execution mode, also should be included in the protection range of the utility model claim such as the change of current foldback circuit concrete structure, the variations such as change of circuit sampling circuit concrete structure.
Claims (10)
1. electric machine controller comprises
Single-chip microcomputer, described single-chip microcomputer is exported control signal to power driving circuit, described power driving circuit according to the control signal that receives to the motor output drive signal;
Current sampling circuit, the current signal of the described motor of sampling, and with the sampling current signal export described single-chip microcomputer to;
It is characterized in that:
Described single-chip microcomputer is the single-chip microcomputer with field orientation control circuit kernel.
2. electric machine controller according to claim 1 is characterized in that:
Described single-chip microcomputer is IRMCK171 type single-chip microcomputer.
3. electric machine controller according to claim 1 and 2 is characterized in that:
The gain circuitry that described current sampling circuit has sampling resistor and is connected to described sampling resistor output.
4. electric machine controller according to claim 3 is characterized in that:
The quantity of described sampling resistor is three, and the three-phase bus with described motor is connected in series respectively.
5. electric machine controller according to claim 1 and 2 is characterized in that:
Described electric machine controller also comprises the current foldback circuit that is connected between described motor and the described single-chip microcomputer; described current foldback circuit has voltage comparator; an input of described voltage comparator receives the sampled level signal of described motor; another input receives reference voltage signal, and the output of described voltage comparator is to described single-chip microcomputer outputs level signals.
6. motor comprises
Stator and rotor, and be provided with controller, described controller has
Single-chip microcomputer, described single-chip microcomputer is exported control signal to power driving circuit, described power driving circuit according to the control signal that receives to the motor output drive signal;
Current sampling circuit, the current signal of the described motor of sampling, and with the sampling current signal export described single-chip microcomputer to;
It is characterized in that:
Described single-chip microcomputer is the single-chip microcomputer with field orientation control circuit kernel.
7. motor according to claim 6 is characterized in that:
Described single-chip microcomputer is IRMCK171 type single-chip microcomputer.
8. it is characterized in that according to claim 6 or 7 described motors:
The gain circuitry that described current sampling circuit has sampling resistor and is connected to described sampling resistor output.
9. motor according to claim 8 is characterized in that:
The quantity of described sampling resistor is three, and the three-phase bus with described motor is connected in series respectively.
10. it is characterized in that according to claim 6 or 7 described motors:
Described electric machine controller also comprises the current foldback circuit that is connected between described motor and the described single-chip microcomputer; described current foldback circuit has voltage comparator; an input of described voltage comparator receives the sampled level signal of described motor; another input receives reference voltage signal, and the output of described voltage comparator is to described single-chip microcomputer outputs level signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203887507U CN202798550U (en) | 2012-08-06 | 2012-08-06 | Motor and controller thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203887507U CN202798550U (en) | 2012-08-06 | 2012-08-06 | Motor and controller thereof |
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| CN202798550U true CN202798550U (en) | 2013-03-13 |
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| CN2012203887507U Expired - Fee Related CN202798550U (en) | 2012-08-06 | 2012-08-06 | Motor and controller thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104617544A (en) * | 2014-04-02 | 2015-05-13 | 美的集团股份有限公司 | Air-conditioner and compressor protection circuit thereof |
| WO2017088566A1 (en) * | 2015-11-24 | 2017-06-01 | 珠海格力电器股份有限公司 | Protection circuit and control device for brushless dc motor |
| CN112600478A (en) * | 2020-12-14 | 2021-04-02 | 广东交通职业技术学院 | Drive control system and method of high-frequency injection permanent magnet synchronous motor |
| CN116780945A (en) * | 2023-06-08 | 2023-09-19 | 青岛云集控制技术有限公司 | Motor controller of fresh air system |
-
2012
- 2012-08-06 CN CN2012203887507U patent/CN202798550U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104617544A (en) * | 2014-04-02 | 2015-05-13 | 美的集团股份有限公司 | Air-conditioner and compressor protection circuit thereof |
| CN104617544B (en) * | 2014-04-02 | 2017-06-16 | 美的集团股份有限公司 | Air-conditioner and its compressor protective circuit |
| US9780555B2 (en) | 2014-04-02 | 2017-10-03 | Midea Group Co., Ltd. | Air conditioner and compressor protection circuit thereof |
| WO2017088566A1 (en) * | 2015-11-24 | 2017-06-01 | 珠海格力电器股份有限公司 | Protection circuit and control device for brushless dc motor |
| US10411461B2 (en) | 2015-11-24 | 2019-09-10 | Gree Electric Appliances, Inc. Of Zhuhai | Protection circuit for brushless DC motor, and control device |
| CN112600478A (en) * | 2020-12-14 | 2021-04-02 | 广东交通职业技术学院 | Drive control system and method of high-frequency injection permanent magnet synchronous motor |
| CN116780945A (en) * | 2023-06-08 | 2023-09-19 | 青岛云集控制技术有限公司 | Motor controller of fresh air system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20210806 |