Hysteresis current control method based on synchronous rotating coordinate system
A technology of hysteresis current and control method, which is applied in the field of current control of three-phase voltage source inverters, can solve problems such as poor controllability of switching frequency and unfixed switching frequency, and achieve reduced switching times, high sine degree, Effect of Reducing Torque Ripple
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[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, and the present invention includes but not limited to the following embodiments.
[0030] Such as figure 1 As shown, the present invention provides a hysteresis current control method based on a synchronous rotating coordinate system, which can realize direct control of the instantaneous current of the motor. figure 2 It is a permanent magnet synchronous motor (Permanent Magnet SynchronousMotor, PMSM) control block diagram, which is composed of three loops: position loop, speed loop and current loop, using i d = 0 control method, where APR and ASR are position controller and speed controller respectively, θ and θ * are the actual feedback position and the reference position of the rotor, respectively, n and n * are the actual feedback speed of the rotor and the reference speed, respectively, i A i B i C is the three-phase current value output by the...
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