该文以单电感双输出(SIDO)Boost变换器为研究对象,详细分析电感电流工作于连续导电模式(CCM)的共模-差模电压型(CMV-DMV)控制SIDO Boost变换器的工作原理。采用时间平均等效电路建模方法,推导主电路的控制-输出、输出阻抗、交叉影响阻...该文以单电感双输出(SIDO)Boost变换器为研究对象,详细分析电感电流工作于连续导电模式(CCM)的共模-差模电压型(CMV-DMV)控制SIDO Boost变换器的工作原理。采用时间平均等效电路建模方法,推导主电路的控制-输出、输出阻抗、交叉影响阻抗等传递函数。在此基础上,建立CMV-DMV控制CCM SIDO Boost变换器的闭环小信号模型,并利用Bode图从频域的角度分析变换器两条输出支路在不同输出电压等级下的交叉影响特性。研究结果表明,在两路输出电压不等时,CMV-DMV控制CCM SIDO Boost变换器的高压输出支路对低压输出支路的交叉影响较小;在两路输出电压相等时,先导通输出支路对后导通输出支路的交叉影响较大。实验结果验证了理论分析的正确性。展开更多
The pulse-width-modulated(PWM)current-source converters(CSCs)fed electric machine systems can be considered as a type of high reliability energy conversion systems,since they work with the long-life DC-link inductor a...The pulse-width-modulated(PWM)current-source converters(CSCs)fed electric machine systems can be considered as a type of high reliability energy conversion systems,since they work with the long-life DC-link inductor and offer high fault-tolerant capability for short-circuit faults.Besides,they provide motor friendly waveforms and four-quadrant operation ability.Therefore,they are suitable for high-power applications of fans,pumps,compressors and wind power generation.The purpose of this paper is to comprehensively review recent developments of key technologies on modulation and control of high-power(HP)PWM-CSC fed electric machines systems,including reduction of low-order current harmonics,suppression of inductor–capacitor(LC)resonance,mitigation of common-mode voltage(CMV)and control of modular PWM-CSC fed systems.In particular,recent work on the overlapping effects during commutation,LC resonance suppression under fault-tolerant operation and collaboration of modular PMW-CSCs are described.Both theoretical analysis and some results in simulations and experiments are presented.Finally,a brief discussion regarding the future trend of the HP CSC fed electric machines systems is presented.展开更多
文摘该文以单电感双输出(SIDO)Boost变换器为研究对象,详细分析电感电流工作于连续导电模式(CCM)的共模-差模电压型(CMV-DMV)控制SIDO Boost变换器的工作原理。采用时间平均等效电路建模方法,推导主电路的控制-输出、输出阻抗、交叉影响阻抗等传递函数。在此基础上,建立CMV-DMV控制CCM SIDO Boost变换器的闭环小信号模型,并利用Bode图从频域的角度分析变换器两条输出支路在不同输出电压等级下的交叉影响特性。研究结果表明,在两路输出电压不等时,CMV-DMV控制CCM SIDO Boost变换器的高压输出支路对低压输出支路的交叉影响较小;在两路输出电压相等时,先导通输出支路对后导通输出支路的交叉影响较大。实验结果验证了理论分析的正确性。
基金supported in part by the Jiangsu Natural Science Foundation of China under Grant BK20180013in part by the Shenzhen Science and Technology Innovation Committee(STIC)under Grant JCYJ20180306174439784.
文摘The pulse-width-modulated(PWM)current-source converters(CSCs)fed electric machine systems can be considered as a type of high reliability energy conversion systems,since they work with the long-life DC-link inductor and offer high fault-tolerant capability for short-circuit faults.Besides,they provide motor friendly waveforms and four-quadrant operation ability.Therefore,they are suitable for high-power applications of fans,pumps,compressors and wind power generation.The purpose of this paper is to comprehensively review recent developments of key technologies on modulation and control of high-power(HP)PWM-CSC fed electric machines systems,including reduction of low-order current harmonics,suppression of inductor–capacitor(LC)resonance,mitigation of common-mode voltage(CMV)and control of modular PWM-CSC fed systems.In particular,recent work on the overlapping effects during commutation,LC resonance suppression under fault-tolerant operation and collaboration of modular PMW-CSCs are described.Both theoretical analysis and some results in simulations and experiments are presented.Finally,a brief discussion regarding the future trend of the HP CSC fed electric machines systems is presented.
