Vehicle built-in permanent magnet synchronous motor control method
A technology of permanent magnet synchronous motor and control method, which is applied in the direction of motor generator control, electronically commutated motor control, control system, etc., and can solve problems such as system performance deterioration and current amplitude limitation
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[0080] The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings.
[0081] The vehicle built-in permanent magnet synchronous motor field weakening vector control system of the present invention comprises the following steps:
[0082] Step 1. Establish a permanent magnet synchronous motor mathematical model according to specific motor parameters, including a voltage equation model, an electromagnetic torque equation model, and a torque balance equation model.
[0083] Stator voltage equation:
[0084]
[0085] Electromagnetic torque equation:
[0086]
[0087] In the formula, R s —Stator resistance; p=d / dt—differential operator; i d , i q ; L d , L q —direct axis and quadrature axis current and inductance; ω e =n p · ω r —ω e is the electrical angular velocity, n p is the number of pole pairs of the motor, ω r is the mechanical angular velocity; ψ f - Flux linkage between rotor permanent...
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