Digital control of a multi-phase interleaved PWM inverter with minimal total harmonic distortion

被引:9
作者
Lin, Yu-Tzung [1 ]
Tzou, Ying-Yu [1 ]
机构
[1] Natl Chiao Tung Univ, Dept Elect & Control Engn, Adv Power Elect Ctr, Power Elect Syst & Chips Lab, Hsinchu, Taiwan
来源
2007 IEEE POWER ELECTRONICS SPECIALISTS CONFERENCE, VOLS 1-6 | 2007年
关键词
PWM inverter; digital repetitive control; minimal THD control; Modelsim and Simulink co-simulation; single-chip FPGA implementation;
D O I
10.1109/PESC.2007.4342038
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This paper presents a digital repetitive control scheme for the minimization of output voltage total harmonic distortion (THD) of a PWM inverter under large unknown nonlinear load. The multi-phase interleaved PWM inverter has been adopted to enhance the effective switching frequency as well as to share the load current. The realization of a digital control for PWM inverter, such as sampling delay and quantization error, may introduce many nonlinear effects to distort its output waveforms. A systematic design procedure is developed to minimize selected range of harmonic spectrum by shaping the output impedance by so that its output voltage THD can be lower than a specified value with given design constraints. The proposed control scheme has been realized with fully digital design by using a single-chip FPGA implementation and verified by using co-simulation technique via a VHDL simulator Modelsim combined with a system-level block diagram oriented simulator Simulink.
引用
收藏
页码:503 / 509
页数:7
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