The Research On PWM Voltage Source Inverter Based On DSP

In this paper,a inverter using DSP is proposed,which is based on Vector Control Stratery(VCS),and combined with SVPWM modulation algorithm.lt is very powerful using the proposed inverter for reducing harmonic,and boosting the DC votltage utlizing coefficient,thus it enhances performance of the inverter.It analyses the PWM Voltage Source Inverter particularly, emphasizing the math-modeland the control stratery,and some common used PWM modulation method.Simulation is completed for the perpose of proving the control stratery proposed in this paper.Then,designs the circuits and experiment has been done to validate the correctness of the whole system.The designed system uses TMS320C240 of TI Corp.as the main controller,which the data ,such as calculation A/D conversion,and the QEP encoder pulse counting.Besides the DSP board ,there is a power-board ,which completes the power convertion from DC to AC and it is controlled by PWM signal from DSP ,but there are OPTs between the pins of IPM and the PWM singal.Besides these above,there are over-current,over-voltage and other protection circuits.After many times of Lab experiments and correction,the proposed system shows excellent performances .which prove the correctness of the control stratery.