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Starting Method of Position Sensorless Control of Doubly Salient Motor

A technology of a double salient motor and a starting method, which is applied in the direction of electronic commutation motor control, control system, electronic commutator, etc., can solve the problems of easy oscillation and complicated control, and achieves easy implementation, simple control, and hardware cost saving. Effect

Inactive Publication Date: 2011-12-21
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional positionless starting methods such as three-stage starting, etc., when the rotor is positioned, the motor rotor is easy to vibrate when starting, and the control is complicated when accelerating

Method used

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  • Starting Method of Position Sensorless Control of Doubly Salient Motor
  • Starting Method of Position Sensorless Control of Doubly Salient Motor
  • Starting Method of Position Sensorless Control of Doubly Salient Motor

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Embodiment Construction

[0033] The starting method of the doubly salient motor without position sensor control provided by the present invention, the method comprises the following steps:

[0034] Apply a pulse voltage of the same time and equal amplitude to each stator winding combination through the inverter, and detect the corresponding current value at the end of each voltage, and the corresponding current value is the equivalent inductance of each combination. function, there is a corresponding relationship between the inductance and the rotor position, and the initial position of the rotor can be obtained indirectly by comparing the current value;

[0035] According to the corresponding switch of the steering conduction inverter, the direction of the stator magnetic potential vector generated by the corresponding stator winding current is ahead of the initial position by a certain angle range, so as to ensure that the combined magnetic potential generated by the stator winding current interacts ...

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Abstract

The invention provides a method for starting a doubly salient motor without position sensor control, which is characterized in that the method includes the following steps: applying a pulse voltage of the same time and equal amplitude to each stator winding combination through an inverter , the corresponding current value is detected at the end of each voltage, and the corresponding current value is a function of the equivalent inductance of each combination mode. There is a corresponding relationship between the inductance and the rotor position, and the initial position of the rotor can be obtained indirectly by comparing the current value; according to Turning to the corresponding switch of the conduction inverter, so that the stator magnetic potential generated by the corresponding stator winding current is ahead of the initial position by a certain angle range, ensuring that the synthetic magnetic potential generated by the stator winding current interacts with the permanent magnetic field to obtain the maximum average electromagnetic torque , to make the motor rotate towards a given direction. The present invention does not need a position sensor, and does not need to obtain motor parameters in advance, and the change of the motor parameters does not affect the realization of the method.

Description

technical field [0001] The invention relates to a control technology for realizing self-starting of a doubly salient permanent magnet motor from a static state without using a position sensor, and belongs to the technical field of motor drive and control. Background technique [0002] Doubly-salient permanent magnet (hereinafter referred to as DSPM) motor is a new type of AC speed control motor that appeared in the 1990s. As a new research direction, its unique structure and excellent electrical properties have received more and more attention and research. The DSPM motor needs to use a position sensor to detect the rotor position during normal operation, so as to control the commutation of the power tube in the inverter, so as to realize the commutation of the motor. In this way, not only the hardware circuit is very complicated, but also because the installation of the Hall sensor is difficult, many problems are added, and even the device is damaged. Therefore, positionl...

Claims

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Application Information

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IPC IPC(8): H02P6/20H02P6/18H02P6/182H02P6/185
Inventor 程明杜军花为
Owner SOUTHEAST UNIV
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