CN202103621U - Device for detecting initial position angle of rotor of electrically excited synchronous motor - Google Patents
Device for detecting initial position angle of rotor of electrically excited synchronous motor Download PDFInfo
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- CN202103621U CN202103621U CN2011201973541U CN201120197354U CN202103621U CN 202103621 U CN202103621 U CN 202103621U CN 2011201973541 U CN2011201973541 U CN 2011201973541U CN 201120197354 U CN201120197354 U CN 201120197354U CN 202103621 U CN202103621 U CN 202103621U
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 35
- 238000004804 winding Methods 0.000 claims abstract description 14
- 230000005284 excitation Effects 0.000 claims description 29
- 238000001514 detection method Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 6
- 230000004907 flux Effects 0.000 description 5
- 230000010354 integration Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
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- 230000036039 immunity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The utility model discloses a device for detecting initial position angle of a rotor of an electrically excited synchronous motor, which comprises a three-phase voltage source type inverter, an electrically excited synchronous motor, an H bridge type inverter, a DSP control system, a PC machine, a PR regulator, a voltage transducer and a current sensor, wherein a three-phase power is connected with the electrically excited synchronous motor through the three-phase voltage source type inverter, a power line between the three-phase voltage source type inverter and the electrically excited synchronous motor is connected with the voltage transducer which is connected with the input end of the DSP control system, the output end of the DSP control system is connected with the PC machine, a direct current power is connected with a rotor excited winding of the electrically excited synchronous motor through the H bridge type inverter, another power line between the H bridge type inverter and the excited winding of the electrically excited synchronous motor is connected with the current sensor, and an IGBT drive signal is connected with the H bridge type inverter. The structure of the device is simple and realizable and is easy to realize, has strong anti-interference property, high detection accuracy, and no extra hardware cost, and can get the detection result of the initial position angle of the rotor.
Description
Technical field
The utility model relates to a kind of motor control assembly, particularly a kind of electric excitation synchronous electric motor rotor initial position angle detecting device.
Background technology
In the electric excitation synchronous motor high performance control system, initial position angle of rotor detects the whether reliable smooth starting that directly influences motor.Vector control system when starting in order to produce correct space vector of voltage; Also need know the initial position angle of rotor of motor so that guarantee the smooth startup of motor; Otherwise can cause system's starting failure when serious because of the inaccurate reduction of stator flux observer system starting performance.
Electricity excitation synchronous motor is with advantages such as its efficient are high, power factor is high and can regulate, in the commercial production machine driving, and particularly extensive use in high-power transmission.At present, several kinds of methods that the synchronous electric motor rotor initial position angle detects have appearred.A kind of simple method is under stator side no power situation, adds DC excitation on the rotor winding, increases to from zero at rotor current and detects induced voltage in the stator winding the steady-state value process, obtains the amplitude and the position angle of magnetic flux through pure integral voltage model.Because stator no power between fixation phase, air-gap flux promptly is a rotor flux, and the magnetic flux position angle of gained can truly reflect rotor magnetic pole position.Though this scheme is simple; But rotor impact DC excitation; The voltage that stator winding is sensed can be decayed very soon; And in real system, pure integral voltage model can not be eliminated the non-linear and high-frequency noise interference problem of direct current biasing error, inverter that integration initial value, A/D sampling brings, and all influences accuracy of detection.Another kind method is that voltage model is improved, and adopts new voltage model, though new voltage model can be eliminated the integration initial value, but still can have the accuracy of detection of factor affecting initial position angle of rotor such as above-mentioned direct current biasing error and high-frequency noise interference.In recent years; Occurred through in the stationary rotor winding, feeding alternating current or dc pulse current methods; Utilize the induced current and the rotor current that produce in the existing current sensor senses stator three-phase shortcircuit winding in the system; Construct a kind of initial position of rotor estimator, finally obtain rotor position information.Its advantage is to have solved DC excitation to influence voltage or the quick problem that decays of electric current that stator side is sensed, and accuracy of detection is higher, but complex algorithm implements the comparison difficulty.
Summary of the invention
The purpose of the utility model is to the problem that exists in the prior art, and a kind of simple in structure, electric excitation synchronous motor initial position angle of rotor checkout gear that accuracy of detection is high, effective is provided.
The electric excitation synchronous motor initial position angle of rotor checkout gear of the utility model comprises three-phase voltage source type inverter, electric excitation synchronous motor, H bridge-type inverter, DSP control system, PC, PR adjuster, voltage sensor and current sensor.Three phase mains is connected with electric excitation synchronous motor through three-phase voltage source type inverter; On the power line between three-phase voltage source type inverter and the electric excitation synchronous motor, be connected with voltage sensor; Voltage sensor is connected with the input of DSP control system, and the output of DSP control system is connected with PC; DC power supply is connected with the rotor-exciting winding of electric excitation synchronous motor through the H bridge-type inverter; On the power line between H bridge-type inverter and the electric excitation synchronous motor rotor-exciting winding, be connected with current sensor; AC power is given PR adjuster through feedback element; The output of PR adjuster calculates duty ratio through the DSP control system, output IGBT drive signal, and the IGBT drive signal is connected with the H bridge-type inverter.
Described DSP control system model is DSP-TMS320F28335; Described voltage sensor model is LV28-P; Described current sensor model is LA28-NP; The model of described three-phase voltage source type inverter is BSM50GB120DLC; The model of described H bridge-type inverter is DR50A.
Beneficial effect: owing to adopted technique scheme, avoided Traditional use rotor impact DC excitation, the detection of the quick decay angle of stator winding induced voltage exists than mistake.Adopt rotor sinusoidal excitation mode; And the synchronous electric motor rotor initial position angle is detected based on the SDFT algorithm; Make synchronous electric motor rotor initial position angle error limitation within ± 1 ° of (electrical angle) scope, satisfy the requirement of synchronous motor vector control system when starting the initial position angle of rotor accuracy of detection.It is simple and reliable for structure, be easy to realize; Direct current biasing error of having avoided bringing because of sampling and High-frequency Interference are to the influence of initial position angle of rotor identification algorithm; Strong interference immunity, accuracy of detection is high and do not need the additional hardware expense, can obtain satisfied initial position angle of rotor testing result.
Description of drawings
Fig. 1 is the main circuit structure block diagram of the utility model.
Among the figure, U1, three-phase voltage source type inverter; U2, electric excitation synchronous motor (SM); U3, H bridge-type inverter; U4, DSP control system; U5, PC; U6, voltage sensor; U7, current sensor.
Embodiment
Do further description below in conjunction with accompanying drawing with the embodiment of the utility model:
The device of the utility model comprises three-phase voltage source type inverter U1, electric excitation synchronous motor U2, H bridge-type inverter U3, DSP control system U4, PC U5, voltage sensor U6 and current sensor U7; Three phase mains is connected with electric excitation synchronous motor U2 through three-phase voltage source type inverter U1; On the power line between three-phase voltage source type inverter U1 and the electric excitation synchronous motor U2, be connected with voltage sensor U6; Voltage sensor U6 is connected with the input of DSP control system U4, and the output of DSP control system U4 is connected with PC U5; DC power supply is connected with the rotor-exciting winding of electric excitation synchronous motor U2 through H bridge-type inverter U3; On the power line between H bridge-type inverter U3 and the electric excitation synchronous motor U2 rotor-exciting winding, be connected with current sensor U7; AC power is given DSP control system U4 and is calculated duty ratio through feedback element; Output IGBT drive signal, the IGBT drive signal is connected with H bridge-type inverter U3.
32 bit DSPs-TMS320F28335 that described DSP control system is a TI company; Described voltage sensor is the LV28-P of LEM company; Described current sensor is the LA28-NP of LEM company; Described three-phase voltage source type inverter is the BSM50GB120DLC model of Infineon company; Described H bridge-type inverter is a DR50A type inverter.
Claims (2)
1. electric excitation synchronous motor initial position angle of rotor checkout gear; It is characterized in that: it comprises three-phase voltage source type inverter, electric excitation synchronous motor, H bridge-type inverter, DSP control system, PC, PR adjuster, voltage sensor and current sensor; Three phase mains is connected with electric excitation synchronous motor through three-phase voltage source type inverter; On the power line between three-phase voltage source type inverter and the electric excitation synchronous motor, be connected with voltage sensor; Voltage sensor is connected with the input of DSP control system, and the output of DSP control system is connected with PC; DC power supply is connected with the rotor-exciting winding of electric excitation synchronous motor through the H bridge-type inverter; On the power line between H bridge-type inverter and the electric excitation synchronous motor rotor-exciting winding, be connected with current sensor; AC power is given PR adjuster through feedback element; The output of PR adjuster calculates duty ratio through the DSP control system, output IGBT drive signal, and the IGBT drive signal is connected with the H bridge-type inverter.
2. electric excitation synchronous motor initial position angle of rotor checkout gear according to claim 1 is characterized in that: described DSP control system model is DSP-TMS320F28335; Described voltage sensor model is LV28-P; Described current sensor model is LA28-NP; The model of described three-phase voltage source type inverter is BSM50GB120DLC; The model of described H bridge-type inverter is DR50A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201973541U CN202103621U (en) | 2011-06-14 | 2011-06-14 | Device for detecting initial position angle of rotor of electrically excited synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201973541U CN202103621U (en) | 2011-06-14 | 2011-06-14 | Device for detecting initial position angle of rotor of electrically excited synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202103621U true CN202103621U (en) | 2012-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201973541U Expired - Fee Related CN202103621U (en) | 2011-06-14 | 2011-06-14 | Device for detecting initial position angle of rotor of electrically excited synchronous motor |
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| Country | Link |
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| CN (1) | CN202103621U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102208895A (en) * | 2011-06-14 | 2011-10-05 | 中国矿业大学 | Method and device for detecting initial position angle of electro-excitation synchronous machine rotor |
| CN109478862A (en) * | 2016-07-12 | 2019-03-15 | 株式会社电装 | The control device and control method of rotating electric machine |
-
2011
- 2011-06-14 CN CN2011201973541U patent/CN202103621U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102208895A (en) * | 2011-06-14 | 2011-10-05 | 中国矿业大学 | Method and device for detecting initial position angle of electro-excitation synchronous machine rotor |
| CN102208895B (en) * | 2011-06-14 | 2013-02-13 | 中国矿业大学 | Method and device for detecting initial position angle of electro-excitation synchronous machine rotor |
| CN109478862A (en) * | 2016-07-12 | 2019-03-15 | 株式会社电装 | The control device and control method of rotating electric machine |
| CN109478862B (en) * | 2016-07-12 | 2022-04-05 | 株式会社电装 | Control device and control method for rotating electric machine |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20140614 |
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| EXPY | Termination of patent right or utility model |