Method and device for measuring resistance of stator winding of permanent magnet synchronous motor

A technology of permanent magnet synchronous motor and stator winding resistance, which is applied in the direction of controlling electromechanical transmission device, controlling generator, and motor generator control, etc., can solve the problem of inaccurate measurement of stator winding resistance, and achieve the effect of improving accuracy

Inactive Publication Date: 2018-11-02
SHENZHEN AUTEL INTELLIGENT AVIATION TECH CO LTD
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  • Claims
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Problems solved by technology

[0004] Based on this, it is necessary to provide a method and device for measuring the stator winding resistance of a permanent magnet synch

Method used

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  • Method and device for measuring resistance of stator winding of permanent magnet synchronous motor
  • Method and device for measuring resistance of stator winding of permanent magnet synchronous motor
  • Method and device for measuring resistance of stator winding of permanent magnet synchronous motor

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Embodiment Construction

[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0041] In one embodiment, such as Figure 1-3 As shown, a method for measuring the stator winding resistance of a permanent magnet synchronous motor is provided. Preferably, the method can be applied to a surface-mounted permanent magnet synchronous motor or its related control equipment. Specifically, the method can be applied to surface-mounted permanent magnet synchronous motors in UAVs, making the method applicable to the control of UAV flight.

[0042] Such as figure 1 As shown, the method specifically includes the following steps S202-S210:

[0043] Step S202, obtaining the d-axis voltage...

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Abstract

The invention relates to a method and device for measuring the resistance of a stator winding of a permanent magnet synchronous motor. The method comprises the following steps of obtaining voltage Udof a d axis and voltage Uq of a q axis of a stator of the permanent magnet synchronous motor; obtaining current Id of the d axis and current Iq of the q axis of the stator of the permanent magnet synchronous motor; obtaining an electric angular velocity omega of a rotor of the permanent magnet synchronous motor; obtaining rotor flux Ke of the permanent magnet synchronous motor; and calculating theresistance R0 of the stator winding of the permanent magnet synchronous motor according to a formula R0=f1 (Ud, Id, Uq, Iq, omega and Ke). The invention further relates to a device for measuring theresistance of the stator winding of the permanent magnet synchronous motor. According to the method and device for measuring the resistance of the stator winding of the permanent magnet synchronous motor, the calculation accuracy on the resistance of the stator winding can be improved.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a method and a device for measuring the stator winding resistance of a permanent magnet synchronous motor. Background technique [0002] The permanent magnet synchronous motor has the advantages of small size, high efficiency, and high torque density. It is widely used in many engineering fields, such as being applied to unmanned aerial vehicles. It is a type of energy-saving and environmentally friendly motor with great development potential. For the vector control of permanent magnet synchronous motors, accurate acquisition of motor parameters plays a vital role in controlling the motor efficiently. [0003] The traditional method of measuring the stator winding resistance of a permanent magnet synchronous motor is to use a voltage equation in the synchronous rotating coordinates to calculate the resistance value. The formula of the stator winding resistance obtained by this met...

Claims

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Application Information

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IPC IPC(8): H02P21/16
Inventor 陈毅东
Owner SHENZHEN AUTEL INTELLIGENT AVIATION TECH CO LTD
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