Sensorless control method for triangle connection permanent magnet synchronous motor and verification system thereof
A permanent magnet synchronous motor, triangular technology, applied in the field of electric power transmission, can solve the problems of reduction and motor heating efficiency, and achieve the effects of continuous speed, smooth angle, good dynamic response ability and steady-state anti-load interference ability
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[0076] In order to be able to describe the technical content of the present invention more clearly, further description will be given below in conjunction with specific embodiments.
[0077] The method of the present invention for position sensorless control of a delta connection permanent magnet synchronous motor includes the following steps:
[0078] (1) Carry out the pulse width modulation output of the delta connection permanent magnet synchronous motor;
[0079] (2) Carry out coordinate transformation of delta connection permanent magnet synchronous motor without position sensor control;
[0080] (3) Carry out second-order improved coupled sliding mode position estimation.
[0081] As a preferred embodiment of the present invention, the step (1) specifically includes the following steps:
[0082] (1.1) Determine the phase voltage direction of the delta connection permanent magnet synchronous motor;
[0083] (1.2) Determine the phase angle offset of the voltage space vector sector;
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