Analysis and implementation of a three-level PWM rectifier/inverter

被引:0
|
作者
Lin, BR [1 ]
机构
[1] Natl Yunlin Univ Sci & Technol, Dept Elect Engn, Power Elect Res Lab, Touliu 640, Yunlin, Taiwan
关键词
D O I
暂无
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
A three-level pulsewidth modulation (PWM) technique for ac/dc/ac converter is proposed. Single-phase three-level rectifier based on double boost configuration with power factor correction is used in the input side. Three-phase three-level voltage source inverter based on diode clamped scheme is employed in order to reduce the harmonic content of the inverter output voltages. In the rectifier side, the hysteresis current controller is used to track the line current command in phase with the mains voltage. A capacitor voltage compensator is adopted to balance the neutral point voltage in order to maintain good quality voltage waveforms on the output of the inverter. In the inverter side, three-level PWM based on sine-triangular comparison is used to reduce the voltage harmonics. The major advantage of the adopted three-level scheme is that the blocking voltage of each power switch is clamping to half of dc-link voltage. The proposed control scheme is verified by the software simulation and experimental results based on a laboratory prototype.
引用
收藏
页码:948 / 956
页数:9
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