CN111650516A - Motor simulation device - Google Patents
Motor simulation device Download PDFInfo
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- CN111650516A CN111650516A CN202010652071.5A CN202010652071A CN111650516A CN 111650516 A CN111650516 A CN 111650516A CN 202010652071 A CN202010652071 A CN 202010652071A CN 111650516 A CN111650516 A CN 111650516A
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- 238000004088 simulation Methods 0.000 title claims abstract description 45
- 239000003990 capacitor Substances 0.000 claims abstract description 20
- 238000002955 isolation Methods 0.000 claims abstract description 7
- 238000012360 testing method Methods 0.000 abstract description 16
- 230000001105 regulatory effect Effects 0.000 abstract description 4
- 230000001939 inductive effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
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- 230000006872 improvement Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
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Abstract
The invention provides a motor simulation device which comprises a motor simulation part, wherein the motor simulation part comprises a control board, a capacitor bank, an isolation power supply and a second bridge arm. The motor simulation device is simple in overall structure, small in size and low in weight as an integral module; the volt-ampere characteristic of the motor can be reproduced by adopting the motor simulation part with a unique structure; because the voltage between the positive pole of the motor analog output and the negative pole of the motor analog output in the motor analog part is higher than the voltage between the positive pole of the power supply and the negative pole of the power supply, the motor analog part has stronger voltage regulation capability than a motor driver, so that the aim of regulating the corresponding inductive current can be fulfilled by regulating the output voltage of the midpoint of the second bridge arm, the test of the motor driver is realized, the operation is simple, the motor analog part is suitable for various motor drivers, and the practicability is strong.
Description
Technical Field
The invention relates to the field of motor testing, in particular to a motor simulation device.
Background
With the development of the fields of electric vehicles, electric tools, rail transit and the like, various types of motor drivers are developed. The motor driver is a key device for ensuring the normal use of the motor, and various indexes of the motor driver need to be tested in the development and production processes. The motor driver includes a direct current motor driver, an alternating current motor driver, a brushless motor driver, and the like.
Traditional test method adopts the motor material object to build test platform and tests, like figure 1, the motor driver 1 that is tried needs to be connected by the motor 01 that is tried, the motor 01 that is tried needs to accompany the examination motor 02 through shaft coupling 04 mechanical connection, accompany the examination motor 02 and need drive by accompanying examination driver 03, entire system has constituted traditional motor test platform, just can realize the test of the motor driver that is tried under the specified power. If the motor drive is powerful, the test system also needs to be a solid foundation platform to reduce vibration. In the prior art, capital and field need large investment, and the requirement on users is very high.
Therefore, it is of great significance to develop a motor simulation device which has a simplified structure, can simplify the motor driver test and can effectively save the cost.
Disclosure of Invention
The invention provides a motor simulation device which is simple in structure, can simplify the testing of a motor driver and can effectively save the cost, and the specific technical scheme is as follows:
a motor simulation device comprises a motor simulation part, wherein the motor simulation part comprises a control board, a capacitor bank, an isolation power supply and a second bridge arm;
the motor driver comprises at least two first bridge arms which are arranged between the positive pole and the negative pole of the power supply and are arranged in parallel;
the capacitor bank comprises a first capacitor C1 and a second capacitor C2 which are arranged between the positive pole and the negative pole of the power supply in series, and the midpoint of the series connection of the first capacitor C1 and the second capacitor C2 is a reference point G;
the isolation power supply U1 comprises an input end and an output end which are isolated from each other, the input end comprises an input anode in + and an input cathode in-, the input anode in + is connected with the anode of the power supply, and the input cathode in-is connected with the cathode of the power supply; the output ends comprise a first output end and a second output end which are isolated from each other, the first output end comprises a first output positive pole out1+ and a first output negative pole out1-, the second output end comprises a second output positive pole out2+ and a second output negative pole out2-, the first output positive pole out1+ is used as a motor analog output positive pole DCM +, the first output negative pole out 1-is connected with a power supply positive pole, the second output positive pole out2+ is connected with a power supply negative pole, and the second output negative pole out 2-is used as a motor analog output negative pole DCM-; the voltage VD2 between the positive electrode DCM + of the motor analog output and the negative electrode DCM-of the motor analog output is 1.1-2 times of the voltage VD1 between the positive electrode of the power supply and the negative electrode of the power supply;
the second bridge arm is arranged between a motor analog output positive electrode DCM + and a motor analog output negative electrode DCM-, and the second bridge arm and the first bridge arm are arranged in a one-to-one correspondence manner; an inductor and a current sensor are arranged between the midpoint of the first bridge arm and the midpoint of the second bridge arm corresponding to the first bridge arm, and the current sensor is used for detecting the current of the inductor;
the voltages between the midpoints of all the first bridge arms and the reference point and the current of the inductor are connected with the control board, and the control board controls the voltage between the midpoints of all the first bridge arms and the reference point to control the current of the inductor.
Preferably, in the above technical solution, the first bridge arm and the second bridge arm are both composed of power switching tubes.
Preferably, in the above technical solution, the power switch tube is an IGBT power switch, a MOSFET power switch, or a SiC power switch.
Preferably, in the above technical solution, the first bridge arm includes a first switch tube and a second switch tube, a first pole of the first switch tube is connected to a positive pole of the power supply, a second pole of the first switch tube is connected to a first pole of the second switch tube, and a second pole of the second switch tube is connected to a negative pole of the power supply; the junction of the first switch tube and the second switch tube is the midpoint of the first bridge arm.
Preferably, in the above technical solution, the second bridge arm includes a third switching tube and a fourth switching tube, a first pole of the third switching tube is connected to a positive pole DCM + of the analog output of the motor, a second pole of the third switching tube is connected to a first pole of the fourth switching tube, and a second pole of the fourth switching tube is connected to a negative pole DCM —; the connection position of the third switching tube and the fourth switching tube is the middle point of the second bridge arm.
Preferably, in the above technical solution, the inductor is located between a midpoint of the first bridge arm and a midpoint of the second bridge arm corresponding to the first bridge arm, and the current sensor is located above the inductor to detect an inductive current.
In the above technical solution, preferably, the motor driver is a two-phase motor driver, and includes two first bridge arms, and the motor simulation part includes two second bridge arms corresponding to the first bridge arms one to one.
In the above technical solution, preferably, the motor driver is a three-phase motor driver, and includes three first bridge arms, and the motor simulation part includes three second bridge arms corresponding to the first bridge arms one to one.
The motor simulation device comprises a motor simulation part, wherein the motor simulation part comprises a control board, a capacitor bank, an isolation power supply and a second bridge arm, the whole structure is simplified, and the motor simulation device is used as a whole module, small in size and low in weight; the basic function of the whole motor simulation part is to reproduce the current-voltage characteristic of the motor, namely, under the condition that the motor driver outputs a specific voltage relative to a reference point, the corresponding current is output according to the simulated motor characteristic. Because the voltage between the positive pole of the motor analog output and the negative pole of the motor analog output in the motor analog part is higher than the voltage between the positive pole of the power supply and the negative pole of the power supply (namely the direct current bus voltage of the motor driver) (preferably 1.1-2 times), the motor analog part has stronger voltage regulation capability than the motor driver, so that the aim of regulating the corresponding inductive current can be achieved by regulating the output voltage of the middle point of the second bridge arm, the test of the motor driver is realized, the operation is simple, the motor analog part is suitable for various motor drivers, and the practicability is strong.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a conventional motor test platform;
fig. 2 is a schematic view of a motor driver test performed by the motor simulation apparatus according to the preferred embodiment 1 of the present invention;
FIG. 3 is a schematic diagram of FIG. 2;
FIG. 4 is a schematic diagram of the preferred embodiment 2 of the present invention;
the system comprises a motor driver 1, a motor driver 2, a motor simulation part 2.1 and a control panel;
01. tested motor, 02 accompanying motor, 03 accompanying driver, 04 coupler.
Detailed Description
Embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
Example 1:
a motor simulation apparatus for testing a two-phase motor driver, referring to fig. 2 and 3, specifically includes a motor simulation part 2, where the motor simulation part 2 includes a control board 2.1, a capacitor bank, an isolated power supply, and a second bridge arm, and details are as follows:
the motor driver 1 comprises a first bridge arm A and a first bridge arm B which are arranged between a power supply positive pole DC + and a power supply negative pole DC-and are arranged in parallel, wherein the first bridge arm A comprises a first switch tube VT1 and a second switch tube VT2, a first pole of the first switch tube VT1 is connected with the power supply positive pole, a second pole of the first switch tube VT1 is connected with a first pole of the second switch tube VT2, and a second pole of the second switch tube VT2 is connected with the power supply negative pole; the connection position of the first switch tube VT1 and the second switch tube VT2 is the midpoint U of the first bridge arm A; the first bridge arm B comprises a first switch tube VT3 and a second switch tube VT4, wherein a first pole of the first switch tube VT3 is connected with the positive pole of a power supply, a second pole of the first switch tube VT3 is connected with a first pole of the second switch tube VT4, and a second pole of the second switch tube VT4 is connected with the negative pole of the power supply; the junction of the first switching tube VT3 and the second switching tube VT4 is the midpoint V of the first arm B. The voltage between the positive pole DC + of the power supply and the negative pole DC-of the power supply is VD 1.
The capacitor bank comprises a first capacitor C1 and a second capacitor C2 which are arranged between a positive pole DC + of the power supply and a negative pole DC-of the power supply in series, and the midpoint of the series connection of the first capacitor C1 and the second capacitor C2 is a reference point G.
The isolation power supply U1 is a two-path output DCDC conversion power supply and comprises an input end and an output end which are isolated from each other, wherein the input end comprises an input positive electrode in + and an input negative electrode in-, the input positive electrode in + is connected with the positive electrode DC + of the power supply, and the input negative electrode in-is connected with the negative electrode DC-of the power supply; the output ends comprise a first output end and a second output end which are isolated from each other, the first output end comprises a first output positive pole out1+ and a first output negative pole out1-, the second output end comprises a second output positive pole out2+ and a second output negative pole out2-, the first output positive pole out1+ is used as a motor analog output positive pole DCM +, the first output negative pole out 1-is connected with a power supply positive pole, the second output positive pole out2+ is connected with a power supply negative pole, and the second output negative pole out 2-is used as a motor analog output negative pole DCM-; the voltage between the positive electrode DCM + of the motor analog output and the negative electrode DCM-of the motor analog output is VD2, and the VD2 is 1.1-2 times of the VD1, namely the VD2 is 10-100% higher than the VD 1.
The motor simulation part 2 comprises a second bridge arm A and a second bridge arm B, the second bridge arm A and the second bridge arm B are both arranged between a motor simulation output positive electrode DCM + and a motor simulation output negative electrode DCM-, the second bridge arm A is arranged corresponding to the first bridge arm A, and the second bridge arm B is arranged corresponding to the first bridge arm B. The method comprises the following steps: the second bridge arm A comprises a third switching tube VT7 and a fourth switching tube VT8, the first pole of the third switching tube VT7 is connected with the positive pole DCM + of the motor analog output, the second pole of the third switching tube VT7 is connected with the first pole of the fourth switching tube VT8, and the second pole of the fourth switching tube VT8 is connected with the negative pole DCM-of the motor analog output; the connection position of the third switching tube VT7 and the fourth switching tube VT8 is the midpoint D of the second bridge arm; the second bridge arm B comprises a third switching tube VT9 and a fourth switching tube VT10, the first pole of the third switching tube VT9 is connected with the positive pole DCM + of the motor analog output, the second pole of the third switching tube VT9 is connected with the first pole of the fourth switching tube VT10, and the second pole of the fourth switching tube VT10 is connected with the negative pole DCM-of the motor analog output; the junction of the third switching tube VT9 and the fourth switching tube VT10 is the middle point E of the second bridge arm.
An inductor L1 is positioned between the midpoint U of the first bridge arm A and the midpoint D of the second bridge arm A, and the current sensor I1 is positioned above the inductor L1 to detect the current of the inductor L1.
An inductor L2 is positioned between the midpoint V of the first bridge arm B and the midpoint E of the second bridge arm B, and the current sensor I2 is positioned above the inductor L2 to detect the current of the inductor L2.
The first switch tube VT1, the second switch tube VT2, the first switch tube VT3, the second switch tube VT4, the third switch tube VT7, the fourth switch tube VT8, the third switch tube VT9 and the fourth switch tube VT10 are all power switch tubes, and preferably adopt IGBT power switches, MOSFET power switches or SiC power switches.
The midpoint U of the first bridge arm a, the midpoint V of the first bridge arm B, the reference point G, the current sensor I1, and the current sensor I2 are all connected to a control board 2.1, where the control board is a prior art, and is selected according to actual needs, and the following functions can be implemented: detecting the voltage between the midpoint U of the first bridge arm A and the reference point G through a control board, and adjusting the voltage between the midpoint D of the second bridge arm A and the reference point G of the motor simulation part 2 (namely a motor simulator) according to the characteristics of the motor to realize the control of the current of the inductor L1; and detecting the voltage between the midpoint V of the first bridge arm B and the reference point G through the control board, and adjusting the voltage between the midpoint E of the second bridge arm B and the reference point G according to the characteristics of the motor to realize the control of the current of the inductor L2. Thereby enabling testing of the motor driver 1.
Example 2:
a motor simulation apparatus for testing a three-phase motor driver, referring to fig. 4, is different from embodiment 1 in that:
the motor driver 1 further comprises a first bridge arm C arranged between a positive pole DC + of a power supply and a negative pole DC-, the first bridge arm C comprises a first switch tube VT5 and a second switch tube VT6, a first pole of the first switch tube VT5 is connected with the positive pole of the power supply, a second pole of the first switch tube VT5 is connected with a first pole of the second switch tube VT6, and a second pole of the second switch tube VT6 is connected with the negative pole of the power supply; the junction of the first switching tube VT5 and the second switching tube VT6 is the midpoint W of the first arm C.
The motor simulation part 2 further comprises a second bridge arm C corresponding to the first bridge arm C, the second bridge arm C comprises a third switching tube VT11 and a fourth switching tube VT12, the first pole of the third switching tube VT11 is connected with the positive pole DCM + of the motor simulation output, the second pole of the third switching tube VT11 is connected with the first pole of the fourth switching tube VT12, and the second pole of the fourth switching tube VT12 is connected with the negative pole DCM-; the junction of the third switching tube VT11 and the fourth switching tube VT12 is the middle point F of the second bridge arm.
An inductor L3 is positioned between the midpoint W of the first bridge arm C and the midpoint F of the second bridge arm C, and a current sensor I3 is positioned above the inductor L3 to detect the current of the inductor L3.
The first switch tube VT5, the second switch tube VT6, the third switch tube VT11 and the fourth switch tube VT12 are all power switch tubes, preferably IGBT power switches, MOSFET power switches or SiC power switches.
The midpoint U of the first bridge arm A, the midpoint V of the first bridge arm B, the midpoint W of the first bridge arm C, the reference point G, the current sensor I1, the current sensor I2 and the current sensor I3 are all connected with the control board 2.1, the voltage between the midpoint U of the first bridge arm A and the reference point G is detected through the control board, the voltage between the midpoint D of the second bridge arm A and the reference point G is adjusted according to the motor characteristics, and the current of the inductor L1 is controlled; detecting the voltage between the midpoint V of the first bridge arm B and the reference point G through the control board, and adjusting the voltage between the midpoint E of the second bridge arm B and the reference point G according to the characteristics of the motor to realize the control of the current of the inductor L2; detecting the voltage between the midpoint W of the first bridge arm C and the reference point G through the control board, and adjusting the voltage between the midpoint F of the second bridge arm C and the reference point G according to the characteristics of the motor to realize the control of the current of the inductor L3; thereby enabling testing of the motor driver 1.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The motor simulation device is characterized by comprising a motor simulation part (2), wherein the motor simulation part (2) comprises a control board (2.1), a capacitor bank, an isolation power supply and a second bridge arm;
the motor driver comprises at least two first bridge arms which are arranged between the positive pole and the negative pole of the power supply and are arranged in parallel;
the capacitor bank comprises a first capacitor (C1) and a second capacitor (C2) which are arranged between the positive pole and the negative pole of the power supply in series, and the midpoint of the series connection of the first capacitor (C1) and the second capacitor (C2) is a reference point (G);
the isolation power supply (U1) comprises an input end and an output end which are isolated from each other, the input end comprises an input anode (in +) and an input cathode (in-), the input anode (in +) is connected with the anode of the power supply, and the input cathode (in-) is connected with the cathode of the power supply; the output end comprises a first output end and a second output end which are isolated from each other, the first output end comprises a first output positive pole (out1+) and a first output negative pole (out1-), the second output end comprises a second output positive pole (out2+) and a second output negative pole (out2-), the first output positive pole (out1+) is used as a motor analog output positive pole (DCM +), the first output negative pole (out1-) is connected with a power supply positive pole, the second output positive pole (out2+) is connected with a power supply negative pole, and the second output negative pole (out2-) is used as a motor analog output negative pole (DCM-); the voltage (VD2) between the motor analog output anode (DCM +) and the motor analog output cathode (DCM-) is 1.1-2 times of the voltage (VD1) between the power supply anode and the power supply cathode;
the second bridge arm is arranged between a motor analog output positive pole (DCM +) and a motor analog output negative pole (DCM-), and the second bridge arm and the first bridge arm are arranged in a one-to-one correspondence manner; an inductor and a current sensor are arranged between the midpoint of the first bridge arm and the midpoint of the second bridge arm corresponding to the first bridge arm, and the current sensor is used for detecting the current of the inductor;
the voltages between the midpoints of all the first bridge arms and the reference point and the current of the inductor are connected with the control board, and the control board controls the voltage between the midpoints of all the first bridge arms and the reference point to control the current of the inductor.
2. The motor simulation apparatus of claim 1, wherein the first leg and the second leg are each comprised of power switching tubes.
3. The motor simulation device of claim 2, wherein the power switching tubes are IGBT power switches, MOSFET power switches, or SiC power switches.
4. The motor simulation device according to claim 2, wherein the first bridge arm comprises a first switch tube and a second switch tube, a first pole of the first switch tube is connected with a positive pole of a power supply, a second pole of the first switch tube is connected with a first pole of the second switch tube, and a second pole of the second switch tube is connected with a negative pole of the power supply; the junction of the first switch tube and the second switch tube is the midpoint of the first bridge arm.
5. The motor simulation apparatus according to claim 2, wherein the second bridge arm comprises a third switching tube and a fourth switching tube, a first pole of the third switching tube is connected with a positive motor simulation output pole (DCM +), a second pole of the third switching tube is connected with a first pole of the fourth switching tube, and a second pole of the fourth switching tube is connected with a negative motor simulation output pole (DCM-); the connection position of the third switching tube and the fourth switching tube is the middle point of the second bridge arm.
6. The motor simulator of claim 5, wherein the inductor is located between a first leg midpoint and a second leg midpoint corresponding to the first leg, and wherein the current sensor is located above the inductor to detect inductor current.
7. Motor simulation device according to any of the claims 1-6, characterized in that the motor drive is a two-phase motor drive comprising two first bridge legs and the motor simulation part (2) comprises two second bridge legs in one-to-one correspondence with the first bridge legs.
8. The motor simulation device according to any of the claims 1 to 6, characterized in that the motor drive is a three-phase motor drive comprising three first legs and the motor simulation part (2) comprises three second legs in one-to-one correspondence with the first legs.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010652071.5A CN111650516A (en) | 2020-07-08 | 2020-07-08 | Motor simulation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010652071.5A CN111650516A (en) | 2020-07-08 | 2020-07-08 | Motor simulation device |
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| CN204906234U (en) * | 2015-08-17 | 2015-12-23 | 中国航天科技集团公司第九研究院第七七一研究所 | Brushless motor drive module |
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| CN108490805A (en) * | 2018-03-29 | 2018-09-04 | 上海大学 | A kind of DC brushless motor analog machine and its control method |
| CN208722050U (en) * | 2018-08-01 | 2019-04-09 | 青岛钜洋信息工程有限公司 | A kind of novel analog motor load for PEU test macro |
| CN109995092A (en) * | 2019-05-20 | 2019-07-09 | 江苏林洋能源股份有限公司 | A kind of virtual synchronous generator control strategy |
| CN212275909U (en) * | 2020-07-08 | 2021-01-01 | 湖南银河天涛科技有限公司 | Motor simulation device |
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2020
- 2020-07-08 CN CN202010652071.5A patent/CN111650516A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204906234U (en) * | 2015-08-17 | 2015-12-23 | 中国航天科技集团公司第九研究院第七七一研究所 | Brushless motor drive module |
| CN206557603U (en) * | 2017-03-20 | 2017-10-13 | 北京润科通用技术有限公司 | A kind of motor simulation device and power of motor level emulation test system |
| CN107888077A (en) * | 2017-12-07 | 2018-04-06 | 深圳市禾望电气股份有限公司 | A kind of bidirectional, dc DC converter and its control method |
| CN108490805A (en) * | 2018-03-29 | 2018-09-04 | 上海大学 | A kind of DC brushless motor analog machine and its control method |
| CN208722050U (en) * | 2018-08-01 | 2019-04-09 | 青岛钜洋信息工程有限公司 | A kind of novel analog motor load for PEU test macro |
| CN109995092A (en) * | 2019-05-20 | 2019-07-09 | 江苏林洋能源股份有限公司 | A kind of virtual synchronous generator control strategy |
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: Room 101-301, building D3, Jinrong Wangcheng science and Technology Industrial Park, 858 Purui West Road, Wangcheng economic and Technological Development Zone, Changsha City, Hunan Province, 410200 Applicant after: Hunan Tiantao Technology Co.,Ltd. Address before: Room 101-301, building D3, Jinrong Wangcheng science and Technology Industrial Park, No. 858, Purui West Road, economic and Technological Development Zone, Wangcheng District, Changsha City, Hunan Province, 410000 Applicant before: HUNAN YINHE TIANTAO TECHNOLOGY Co.,Ltd. |