中国电机工程学报Issue(30)：10-17,8.
一种新颖的单电源级联型多电平逆变器
A Novel Single-supply Cascaded Multilevel Inverter
摘要
Abstract
From the view of economy and power integration, a novel single-supply cascaded multilevel inverter is proposed in this paper. Retaining the traditional cascaded multilevel inverter's merits of low voltage stress on each switch, few quantities of switches and easy modularization, it contains only one independent DC source in DC-link and DC source in other bridges are replaced by some capacitors. The independent DC source can charge the capacitors frequently by the introduction of the charging-switches pairs and keeps the voltage of the capacitors to be regarded as constant to some extent. The effective combination of the independent DC source and capacitors ensures that the cascaded multilevel inverter operates stably. The operation principle and carrier phase-shifted sinusoidal pulse width modulation (SPWM) strategy of the single-supply cascaded seven-level inverter are first presented in detail. The influencing factors of the capacitors voltage stability are deduced by mathematical analysis, and the result serves as theoretical basis of the parameter optimization. In addition, the charging-loss is calculated. Control system is digitally implemented with TMS320F2407A DSP and XC3S400 FPGA. A 1kW inverter prototype has been built to verify the feasibility of the proposed topology.关键词
级联型多电平逆变器/单电源/载波移相/正弦脉宽调制/损耗计算Key words
cascaded multilevel inverter/single-supply/carrier phase-shifted/sinusoidal pulse width modulation (SPWM)/loss calculation分类
信息技术与安全科学引用本文复制引用
王宝诚,王炜,杜会元,孙孝峰..一种新颖的单电源级联型多电平逆变器[J].中国电机工程学报,2013,(30):10-17,8.基金项目
国家自然科学基金资助项目(51077112)；河北省自然科学基金资助项目(E2012203163)。Project Supported by National Natural Science Foundation of China (51077112) （51077112）
Project Supported by the Natural Science Foundation of Hebei Province (E2012203163) （E2012203163）
