Voltage three phase ac frequency conversion velocity modulation system design
Abstract: This article to used in the inversion power supply frequency conversion velocity modulation system carrying on the analysis, and designed one kind to control the inversion control system take the MCS-51 series monolithic integrated circuit as foundation production SPWM.
First, in the inversion power supply exchange velocity modulation system, the electric motor movement condition has had the very big change, in view of the inversion power supply characteristic, has produced the frequency conversion velocity modulation asynchronous machine choice method.
Next, should serve as the explanation regarding the new power component. According to the new power component characteristic and the application request, designed the inversion actuation electric circuit and the protection circuit, caused the new power component the application safer to be reliable.
Finally, for the adaption frequency conversion velocity modulation electrical machinery request, designed a set to produce the SPWM control inversion control motor frequency conversion velocity modulation system based on the monolithic integrated circuit, has partially carried on the design regarding the hardware electric circuit part and the realization control strategy software.
Keywords: Exchange velocity modulation; MCS-51 monolithic integrated circuit; Inversion; SPWM