Modulation function based SVPWM control method for single-phase open-circuit fault of five-phase permanent magnet synchronous motor
A technology of permanent magnet synchronous motor and modulation function, which can be used in motor control, motor generator control, AC motor control, etc., and can solve the problems of complex operation and large amount of calculation.
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[0057] The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. This embodiment takes the realization of the SVPWM control when the phase A of the five-phase permanent magnet synchronous motor has an open circuit fault as an example. Depend on Picture 1-1 and Figure 1-2 It can be seen from the SVPWM space voltage vector distribution diagram in the A-phase open-circuit fault state that it is divided into the fundamental wave space α-β plane and the third harmonic space z-plane. Take the α-axis of the two-phase stationary αβ coordinate system in the fundamental space of the stator coincides with the axis of the stator A-phase winding, and the α-axis and the β-axis coincide with the real axis and the imaginary axis of the complex plane of the fundamental wave space respectively. Under normal conditions, according to the amplitude The principle of equal values, the coordinate transformation matrix T of the...
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