Research on Multi SPWM by Constructing Memory in FPGA
Zhu Ying-hao · IEEE Transactions on Power Electronics · 2008
Multi-level converter with cascaded cells has been widely applied in recent years,particularly in the area of high voltage.It was controlled mostly by pulses of SPWM with carrier horizon phase shift.Due to the need for more real-time pulses,the general main controller can not meet the requirement.Because FPGA contains a large number of logic gate cir-cuits and embedded storage arrays,it particularly suitable for high-speed data acquisition and the application of logic oc-casions.The method of structing memory is used in FPGA and combines the DSP to implement multi SPWM with carrier level phase shift in real-ime.The experimental results show the correctness and feasibility of the method.