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组合式变流器错时矢量调制技术及并联控制方案 被引量:7

Interleaved Space Vector Modulation Technique and Parallel Control Scheme of Multi-Modular Converter
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摘要 通过剖析一种能够减小交流电流谐波的错时矢量调制(ISVM)技术,提出了一种具有较高可靠性和冗余性的新型组合式变流器主电路拓扑,并借助数学模型和等效电路对多变流器模块并联进行了重点研究,得到了一种简单适用的并联控制方案.仿真实验证明,错时矢量调制技术能够将系统的等效开关频率提高到单模块开关频率的N倍(N为并联模块数),大大减小交流电流谐波;文中提出的并联控制方案能够实现各种负载情况下模块间的均流控制. This paper presented a new multi-modular PWM converter. A novel Interleaved SVPWM (ISVPWM) technique is introduced to reduce the harmonic component of AC current. Simultaneously, a parallel control scheme, which is simple and easy to implement, is proposed based on the study of mathematical model and equivalent circuit of the converter. The theoretical analysis and simulation results show that the ISVPWM technique can make the converter's equivalent switching frequency N times of each module( N is the number of modules), and reduce AC current harmonic and the parallel control scheme can make each module share the load current in different load conditions.
出处 《北京交通大学学报》 EI CAS CSCD 北大核心 2008年第2期35-38,共4页 JOURNAL OF BEIJING JIAOTONG UNIVERSITY
基金 国家科技支撑项目资助(2006BAG02B00) 北京交通大学优秀博士生科技创新基金资助(48028)
关键词 电力电子 组合式变流器 错时矢量调制技术 并联控制 均流 power electronics multi-modular converter interleaved space vector modulation (ISV M) parallel control current equalization
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