CN102195541A - PMSM (permanent magnet synchronous motor) for electrical vehicle and temperature detection circuit of controller system - Google Patents
PMSM (permanent magnet synchronous motor) for electrical vehicle and temperature detection circuit of controller system Download PDFInfo
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- CN102195541A CN102195541A CN2011101321345A CN201110132134A CN102195541A CN 102195541 A CN102195541 A CN 102195541A CN 2011101321345 A CN2011101321345 A CN 2011101321345A CN 201110132134 A CN201110132134 A CN 201110132134A CN 102195541 A CN102195541 A CN 102195541A
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- 238000012545 processing Methods 0.000 claims abstract description 3
- 238000005070 sampling Methods 0.000 claims description 18
- 230000003321 amplification Effects 0.000 claims description 8
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 8
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- 239000000919 ceramic Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Abstract
The invention relates to a PMSM (permanent magnet synchronous motor) for an electrical vehicle and a temperature detection circuit of a controller system. The temperature detection circuit comprises a stator temperature detection circuit of a motor, a temperature detection circuit of a controller power module, a radiator temperature detection circuit of a power module and a PCB (printed circuit board) temperature detection circuit of the power module. In the temperature detection circuit of the controller system, a thermistor which is taken as a transducer is used for detecting each temperature signal, the temperature signals are transmitted to a DSP (digital signal processor)/MCU (micro control unit) of a controller after being subjected to A/D conversion; and the temperature signals are processed and calculated to obtain detected temperature values. The invention also provides a realization scheme for detecting and processing the circuit, which is used to realize four-path temperature detection and is more comprehensive and reliable in detection compared with an existing temperature detection method.
Description
Technical field
The invention belongs to motor and its design of Controller field, be specifically related to the testing circuit of a kind of pure electric vehicle with permagnetic synchronous motor temperature and controller temperature.
Background technology
Pure electric vehicle is the popular domain of research and development at present, and the application of permagnetic synchronous motor in electric motor car is extensive day by day.In order to guarantee motor and controller system operate as normal, must detect the stator temperature of permagnetic synchronous motor and power model, radiator, the pcb board of controller.Therefore adopt thermistor to come detected temperatures as transducer.
Summary of the invention
The object of the present invention is to provide the temperature sensing circuit of a kind of electric vehicle permagnetic synchronous motor and controller system, make that the temperature detection result of motor and controller system is more accurate, thereby guarantee the stable operation of electric system.
The present invention is specifically by the following technical solutions:
The temperature sensing circuit of a kind of electric vehicle permagnetic synchronous motor and controller system comprises 4 road thermistor temperature sensors, voltage sampling circuit, voltage-regulating circuit, amplification and filter circuit and digital signal processor, it is characterized in that:
Described 4 road thermistor temperature sensors are respectively permanent-magnetic synchronous motor stator temperature sensor, controller system power model radiator temperature transducer, the pcb board temperature sensor of controller system power model and the temperature of power module transducer of controller system, and this 4 road metal fever resistance transducer is separately positioned on the power model position of the pcb board and the controller system of the power model radiator of permanent-magnetic synchronous motor stator, described controller system, described controller system power model;
4 tunnel first bleeder circuits that described voltage sampling circuit is formed by the thermistor and the corresponding divider resistance of 4 road thermistor temperature sensors respectively then will be through the voltage signal V of thermistor
RTDInsert the voltage sampling signal that obtains No. 4 thermistor (temperature) sensors behind first voltage follower circuit;
Described voltage sampling signal is inputed to voltage-regulating circuit, and voltage-regulating circuit obtains adjusted 4 road output voltages after by second bleeder circuit that links to each other successively and second voltage follower circuit;
Described adjusted 4 road output voltages are inputed to described amplification and filter circuit, through amplify and Filtering Processing after will obtain the voltage signal that voltage magnitude meets digital signal processor input requirement and input to digital signal processor;
The last temperature value that calculates the power of the pcb board of the power model radiator of permanent-magnetic synchronous motor stator, described controller system, described controller system power model and controller system according to the voltage signal that inputs to described digital signal processor respectively.
Temperature acquisition to motor and controller system provided by the invention mainly is to use thermistor, is generally semiconductive ceramic.
The operation principle of testing circuit is: thermistor, divider resistance, DC power supply V
CCCarry out circuit and be connected in series, connect voltage follower circuit again and just constitute the temperature voltage signal sample circuit.Give voltage-regulating circuit with temperature voltage signal, obtain adjusted temperature voltage signal.Give amplification, filter circuit with adjusted temperature voltage signal at last, give DSP/MCU after treatment, after calculating, just obtain corresponding temperature value.
Temperature sensing circuit provided by the invention comprises to the testing circuit of permagnetic synchronous motor temperature with to the temperature circuit of controller.Wherein the temperature detection to motor mainly is at the motor stator temperature, and the temperature detection of controller is then comprised temperature to power model, radiator and PCB.Compare with existing invention testing circuit, the invention enables the temperature detection of motor and controller system more comprehensively, whole system operation is more reliable, safety.
Description of drawings
Fig. 1 is temperature sensing circuit theory of constitution figure;
Fig. 2 is thermistor (temperature) sensor temperature sensing circuit figure;
Fig. 3 is thermistor (temperature) sensor temperature sensing circuit voltage sample partial circuit figure;
Fig. 4 is a thermistor (temperature) sensor temperature sensing circuit voltage adjustment member circuit diagram;
Fig. 5 is that the thermistor (temperature) sensor temperature sensing circuit amplifies, filtering partial circuit figure.
Embodiment
Elaborate below in conjunction with accompanying drawing of the present invention.
As shown in Figure 1, the invention provides the temperature sensing circuit of a kind of electric vehicle permagnetic synchronous motor and controller system, comprise detection temperature of power module, motor stator temperature, power model heating panel temperature and power model pcb board temperature signal.Operation principle is: the thermistor voltage signal after 4 tunnel samplings is through voltage-regulating circuit, and 4 road output voltage signals that obtain obtain the voltage signal that voltage magnitude meets digital signal processor input requirement after inputing to amplification and filter circuit.At last voltage signal being inputed to DSP/MCU handles calculating respectively and just obtains the temperature value that detects.
Fig. 2 is thermistor (temperature) sensor temperature sensing circuit figure, its equivalence can be regarded as voltage sampling circuit shown in Figure 3, voltage-regulating circuit shown in Figure 4 and amplification, the filter circuit of Fig. 5.The course of work of temperature sensing circuit of the present invention is: thermistor, divider resistance, DC power supply V
CCCarry out circuit and be connected in series, calculate, obtain voltage (over the ground) V of thermistor by the circuit dividing potential drop
RTDGive the input in the same way of the first amplifier A1.The first amplifier A1 is that voltage follow connects its output voltage values V
1oEqual V
RTD, give voltage-regulating circuit with it and carry out dividing potential drop, give the second amplifier A2 again, obtain sampling, adjusted temperature voltage signal V
2oAt last with V
2oGive the second-order low-pass filter circuit, voltage signal processed V
3oGive DSP/MCU.
Fig. 3 is thermistor (temperature) sensor temperature sensing circuit voltage sampling circuit partial circuit figure, and described voltage sampling circuit comprises by thermistor, the first divider resistance R
1, the second divider resistance R
2, DC power supply V
CCDescribed first bleeder circuit of forming and first voltage follower circuit of forming by the first amplifier A1, the described thermistor one termination first divider resistance R
1An end, another termination second branch pressure voltage R of thermistor
2An end, the first divider resistance R
1The straight power supply V of another termination
CC, the second branch pressure voltage R
2Another termination power ground, the voltage signal V of thermistor
RTDThe input in the same way that connects the first amplifier A1, reverse input end are on the one hand by the 3rd resistance R
3Be connected to ground, on the other hand by the 4th resistance R
4Be connected to the output of the first amplifier A1.For bleeder circuit, because of the input voltage of the AD passage of DSP must satisfy certain limit, overtension can cause the damage of AD pin, so add divider resistance, guarantees that input voltage meets the demands.Voltage follower circuit can play the effect of impedance matching, can make the amplifying circuit of back one-level better work, and output voltage is not subjected to back level impedance influences again.Voltage follower circuit also has buffer action in addition, makes between the forward and backward level circuit to be independent of each other.
Be easy to get V according to circuit diagram
1o=V
RTD=Vcc * (R
RTD+ R
2)/(R
RTD+ R
1+ R
2)
Fig. 4 is a thermistor (temperature) sensor temperature sensing circuit voltage adjustment member circuit diagram.Described voltage-regulating circuit comprises by the 5th divider resistance R
5, the 6th divider resistance R
6Second bleeder circuit of forming and second voltage follower circuit of forming by the second amplifier A2; The voltage sampling signal V of voltage sampling circuit output
2INBy the 5th divider resistance R
5Be connected to the input in the same way of the second amplifier A2, the 6th divider resistance R
6One end is connected with the input in the same way of the second amplifier A2, and the other end then is connected to power supply ground, and the reverse input end of the second amplifier A2 is connected to output.Input voltage signal V
2IN, the 5th divider resistance R
5, the second divider resistance R
6Be that the series connection dividing potential drop connects, the second amplifier A2 power end is connected to V
CcBe easy to get according to circuit diagram:
V
2o=V
2IN* R
6/ (R
5+ R
6), and V
1o=V
2IN, then have:
V
2o=?V
1o×R
6/(?R
5+?R
6)=?Vcc×{（R
RTD+R
2）/(?R
RTD+R
1+?R
2)}?×{R
6/(?R
5+?R
6)}
Fig. 5 is that the thermistor (temperature) sensor temperature sensing circuit amplifies, filtering partial circuit figure.This circuit is actual to be a second-order low-pass filter circuit, is made up of two joint RC filter circuits and in-phase proportion amplifying circuit.If get R
9=R
10=R, C
5=C
6=C, then the gain G ain of second-order low-pass filter circuit=1+ R
10/ R
9=2.Through the voltage V that exports behind the second-order low-pass filter
3o=V
3IN* Gain=2 V
3IN, be improved by output voltage behind the second-order low-pass filter.
V is easy to get
3o=2 V
3IN=2 V
2o=2 Vcc * { (R
RTD+ R
2)/(R
RTD+ R
1+ R
2) * { R
6/ (R
5+ R
6)
The present patent application people has done detailed explanation and description in conjunction with Figure of description to embodiments of the invention; but those skilled in the art should understand that; above embodiment only is the preferred embodiments of the invention; detailed explanation is just in order to help the reader to understand spirit of the present invention better; and be not limiting the scope of the invention; on the contrary, any any improvement or modification of being done based on the present application spirit all should drop within protection scope of the present invention.
Claims (6)
1. the temperature sensing circuit of electric vehicle permagnetic synchronous motor and controller system comprises 4 road thermistor temperature sensors, voltage sampling circuit, voltage-regulating circuit, amplification and filter circuit and digital signal processor, it is characterized in that:
Described 4 road thermistor temperature sensors are respectively permanent-magnetic synchronous motor stator temperature sensor, controller system power model radiator temperature transducer, the pcb board temperature sensor of controller system power model and the temperature of power module transducer of controller system, and this 4 road metal fever resistance transducer is separately positioned on the power model position of the pcb board and the controller system of the power model radiator of permanent-magnetic synchronous motor stator, described controller system, described controller system power model;
4 tunnel first bleeder circuits that described voltage sampling circuit is formed by the thermistor and the corresponding divider resistance of 4 road thermistor temperature sensors respectively then will be through the voltage signal V of thermistor
RTDInsert the voltage sampling signal that obtains No. 4 thermistor (temperature) sensors behind first voltage follower circuit;
Described voltage sampling signal is inputed to voltage-regulating circuit, and voltage-regulating circuit obtains adjusted 4 road output voltages after by second bleeder circuit that links to each other successively and second voltage follower circuit;
Described adjusted 4 road output voltages are inputed to described amplification and filter circuit, through amplify and Filtering Processing after will obtain the voltage signal that voltage magnitude meets digital signal processor input requirement and input to digital signal processor;
The last temperature value that calculates the power of the pcb board of the power model radiator of permanent-magnetic synchronous motor stator, described controller system, described controller system power model and controller system according to the voltage signal that inputs to described digital signal processor respectively.
2. the temperature sensing circuit of electric vehicle permagnetic synchronous motor according to claim 1 and 2 and controller system, it is characterized in that: described thermistor temperature sensor adopts the thermistor of negative temperature coefficient, this thermistor is ceramic material and thermally sensitive resistor, and its resistance value and temperature are non-linear.
3. the temperature sensing circuit of electric vehicle permagnetic synchronous motor according to claim 1 and controller system is characterized in that:
Described voltage sampling circuit comprises by thermistor, the first divider resistance (R
1), the second divider resistance (R
2), DC power supply V
CCDescribed first bleeder circuit of forming and first voltage follower circuit of forming by first amplifier (A1), the described thermistor one termination first divider resistance (R
1) an end, another termination second branch pressure voltage (R of thermistor
2) an end, the first divider resistance (R
1) the straight power supply V of another termination
CC, the second branch pressure voltage (R
2) another termination power ground, the voltage signal V of thermistor
RTDThe input in the same way that connects first amplifier (A1), reverse input end are on the one hand by the 3rd resistance (R
3) be connected to ground, on the other hand by the 4th resistance (R
4) be connected to the output of first amplifier (A1).
4. the temperature sensing circuit of electric vehicle permagnetic synchronous motor according to claim 1 and controller system is characterized in that:
Described voltage-regulating circuit comprises by the 5th divider resistance (R
5), the 6th divider resistance (R
6) second bleeder circuit of forming and second voltage follower circuit of forming by second amplifier (A2); The voltage sampling signal V of voltage sampling circuit output
2INBy the 5th divider resistance (R
5) be connected to the input in the same way of second amplifier (A2), the 6th divider resistance (R
6) end is connected with the input in the same way of second amplifier (A2), the other end then is connected to power supply ground, and the reverse input end of second amplifier (A2) is connected to output.
5. the temperature sensing circuit of electric vehicle permagnetic synchronous motor according to claim 1 and controller system is characterized in that:
Described amplification and filter circuit are preferably a second-order low-pass filter circuit, are made up of two joint RC filter circuits and in-phase proportion amplifying circuit.
6. the temperature sensing circuit of electric vehicle permagnetic synchronous motor according to claim 1 and controller system is characterized in that:
Described digital signal processor can be DSP or other micro controller units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101321345A CN102195541A (en) | 2011-05-21 | 2011-05-21 | PMSM (permanent magnet synchronous motor) for electrical vehicle and temperature detection circuit of controller system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101321345A CN102195541A (en) | 2011-05-21 | 2011-05-21 | PMSM (permanent magnet synchronous motor) for electrical vehicle and temperature detection circuit of controller system |
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| CN102195541A true CN102195541A (en) | 2011-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242254A (en) * | 2014-09-01 | 2014-12-24 | 江苏方程电力科技有限公司 | High-power IGBT temperature sampling protective circuit |
| CN105099117A (en) * | 2015-08-24 | 2015-11-25 | 深圳乘方电机有限公司 | Micro brushless direct-current motor with built-in controller |
| CN107020956A (en) * | 2016-01-29 | 2017-08-08 | 铃木株式会社 | Vehicle console device |
| CN107420335A (en) * | 2017-06-14 | 2017-12-01 | 广州三晶电气股份有限公司 | A kind of fan control circuitry with speed-regulating function and rotation speed monitoring |
| CN109163819A (en) * | 2018-10-15 | 2019-01-08 | 西安爱生技术集团公司 | One kind having linear high-precision unmanned vehicle engine cylinder temperature thermometer |
| CN111211719A (en) * | 2018-11-06 | 2020-05-29 | 株洲中车时代电气股份有限公司 | Method and system for estimating temperature of rotor magnetic steel of permanent magnet synchronous motor |
| CN111351595A (en) * | 2020-03-27 | 2020-06-30 | 江西江铃集团新能源汽车有限公司 | Electric automobile PMSM stator temperature detecting system |
| CN117424523A (en) * | 2023-11-02 | 2024-01-19 | 格陆博科技有限公司 | Motor driver hot start temperature estimation system and method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242254A (en) * | 2014-09-01 | 2014-12-24 | 江苏方程电力科技有限公司 | High-power IGBT temperature sampling protective circuit |
| CN104242254B (en) * | 2014-09-01 | 2017-11-03 | 江苏方程电力科技有限公司 | A kind of high-power IGBT temperature sampling protection circuit |
| CN105099117A (en) * | 2015-08-24 | 2015-11-25 | 深圳乘方电机有限公司 | Micro brushless direct-current motor with built-in controller |
| CN107020956A (en) * | 2016-01-29 | 2017-08-08 | 铃木株式会社 | Vehicle console device |
| CN107420335A (en) * | 2017-06-14 | 2017-12-01 | 广州三晶电气股份有限公司 | A kind of fan control circuitry with speed-regulating function and rotation speed monitoring |
| CN109163819A (en) * | 2018-10-15 | 2019-01-08 | 西安爱生技术集团公司 | One kind having linear high-precision unmanned vehicle engine cylinder temperature thermometer |
| CN111211719A (en) * | 2018-11-06 | 2020-05-29 | 株洲中车时代电气股份有限公司 | Method and system for estimating temperature of rotor magnetic steel of permanent magnet synchronous motor |
| CN111351595A (en) * | 2020-03-27 | 2020-06-30 | 江西江铃集团新能源汽车有限公司 | Electric automobile PMSM stator temperature detecting system |
| CN117424523A (en) * | 2023-11-02 | 2024-01-19 | 格陆博科技有限公司 | Motor driver hot start temperature estimation system and method thereof |
| CN117424523B (en) * | 2023-11-02 | 2024-04-09 | 格陆博科技有限公司 | Motor driver hot start temperature estimation system and method thereof |
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Application publication date: 20110921 |