特定消谐式逆变器无死区控制策略研究  

Study of no-dead-time control strategy in selective harmonic elimination inverter

作　　者：张文义[1] 佟为明[1] 杨乐民[2] 徐会明[1] 

机构地区：[1]哈尔滨工业大学电气学院,黑龙江哈尔滨150001 [2]哈尔滨工业大学机电学院,黑龙江哈尔滨150001

出　　处：《电力自动化设备》2006年第1期13-17,共5页Electric Power Automation Equipment

摘　　要：特定消谐式逆变器在理论上能有效地消除谐波,但死区设置增加了输出电压的谐波含量。通过对特定消谐式逆变器换流机理的分析,研究了感性负载时死区对输出电压的影响。分别对提前关断死区加入方式、滞后导通死区加入方式和对称死区加入方式的工作过程进行了分析,得到相应的波形图和输出谐波幅值公式。提出了应用于特定消谐式逆变器的无死区控制策略,并分析了实现无死区控制的条件。在特定消谐式逆变器中应用无死区控制策略可以消除死区对输出电压的不利影响。Selective harmonic elimination inverter can eliminate harmonic effectively in theory,but dead-time increases the harmonic component in output voltage. Based on its operating principle, effect of dead-time on output voltage of inductive load is investigated. Working processes are analyzed on advance-off dead-time manner,lag-on dead-time manner and symmetry dead-time manner,their waveform figures and output harmonics amplitude equations are obtained accordingly. No-dead-time control strategy applied in selective harmonic elimination inverter is presented and the conditions for realizing no-dead-time control are analyzed. Applying no-dead-time control strategy in selective harmonic elimination inverter may eliminate bad influence of dead-time on output voltage.

关 键 词：特定消谐 逆变器 死区效应 无死区控制 

分 类 号：TM464[电气工程—电器]