Fault-tolerant control method of permanent-magnet synchronous motor driving system
A technology for permanent magnet synchronous motors and drive systems, which is applied in motor control, motor generator control, electronically commutated motor control, etc., and can solve problems such as the decline in robustness of the control system
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[0041] The present invention will be described below with reference to the accompanying drawings.
[0042] The system block diagram of the embodiment of the present invention is as figure 1 As shown, including: rectifier circuit, filter circuit, control system, permanent magnet synchronous motor, position sensor. Among them, the parameters of the permanent magnet synchronous motor are: rated phase voltage U N =220V, number of pole pairs p n =2, stator resistance R s =0.665Ω, direct axis inductance L d =7.623mH, quadrature axis inductance L q =7.623mH, permanent magnet flux linkage ψ f =0.783Wb, rated speed n N =1500r / min; determine the control parameters used in the control process according to the characteristics of the control system, in this embodiment, take the control cycle T s =50μs, proportional coefficient K p =0.1, integral coefficient K i =1, direct axis current reference value i d_ref = 0, speed reference value ω ref =1000r / min, current controller ring w...
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