| In the recent 20 years,with the appearance of the new power electron apparatus and microprocessor and the development of the control theory on the Alternating Current (AC) motor, the technology of variable frequency speed variation has improved rapidly and it changes with each passing day.Based on careful investigating principle of inverter and DSP, a design of the digital Pulse Width Modulation(PWM) AC speed variation system is proposed in this paper,which uses Digital Signal Processor (DSP) TMS320Lf2407A special for digital motor control of TI corporation as the control center and uses Intelligent Power Module (IPM) as apparatus of the inverter as well as the Space Vector Pulse Width Modulation(SVPWM) as the control algorithm.The paper expatiates on principium and preferences of each parted device which is made up of the power circuit, control circuit, voltage and... |