特定消谐式逆变器中窄脉冲的优化策略  

Optimization Strategy for Narrow Pulse in Selective Harmonic Elimination Inverter

作　　者：张文义[1] 游文虎[1] 徐会明[1] 杨乐民[1] 

机构地区：[1]哈尔滨工业大学,黑龙江省哈尔滨市150001

出　　处：《电力系统自动化》2006年第6期53-56,69,共5页Automation of Electric Power Systems

基　　金：黑龙江省科技攻关项目(G99A11-3)科技型中小企业技术创新基金无偿资助项目(134C26212300427)已申请国家发明专利(00102800.6)。~~

摘　　要：特定消谐式逆变器在理论上能够有效消除谐波,但输出电压波形中的窄脉冲难以用硬件实现。根据功率器件开关延迟时间的具体要求,提出了展宽开关角对和省略开关角对相结合的窄脉冲优化策略。理论分析和计算结果表明,所提出的优化策略可以达到硬件实现容易、功率器件的开关损耗和总谐波畸变率较小的目的,从而为特定消谐式逆变器更好地应用于工程实际提供了有效的手段。Theoretically selective harmonic elimination inverter can eliminate harmonic effectively. However, hardware realization is difficult due to narrow pulse in output voltage waveform. According to the requirement of on-off time of power device, this paper proposes an optimization strategy by combining the narrow pulse of widening couple of switch angles and omitting couple of switch angles. Theoretical analysis and calculation result show that the proposed optimization strategy can greatly reduce the difficulty in hardware realization, switching loss of power device and the total harmonic distortion. Thus it provides an effective method for the application of selective harmonic elimination inverter.

关 键 词：特定消谐式逆变器 窄脉冲 开关角对 总谐波畸变率 

分 类 号：TM464[电气工程—电器]