现代电子技术
現代電子技術
현대전자기술
MODERN ELECTRONICS TECHNIQUE
2014年
23期
132-135
,共4页
准Z源逆变器%脉冲宽度调制%直通状态%开关损耗
準Z源逆變器%脈遲寬度調製%直通狀態%開關損耗
준Z원역변기%맥충관도조제%직통상태%개관손모
quasi-Z-source inverter%pulse width modulation%shoot-through state%switching loss
准Z源逆变器（qZSI）的正弦脉冲宽度调制（SPWM），将直通状态插入到传统零矢量与有效矢量之间，然而每个控制周期都有两次直通状态，导致大量附加的开关动作，即开关损耗。研究一种利用变载波幅值，从而减少基波周期中各开关管平均开关转换动作的qZSI的PWM策略，以降低开关损耗。在Matlab/Simulink仿真环境下建立仿真模型，验证提出的PWM策略，并与SPWM相比较。
準Z源逆變器（qZSI）的正絃脈遲寬度調製（SPWM），將直通狀態插入到傳統零矢量與有效矢量之間，然而每箇控製週期都有兩次直通狀態，導緻大量附加的開關動作，即開關損耗。研究一種利用變載波幅值，從而減少基波週期中各開關管平均開關轉換動作的qZSI的PWM策略，以降低開關損耗。在Matlab/Simulink倣真環境下建立倣真模型，驗證提齣的PWM策略，併與SPWM相比較。
준Z원역변기（qZSI）적정현맥충관도조제（SPWM），장직통상태삽입도전통령시량여유효시량지간，연이매개공제주기도유량차직통상태，도치대량부가적개관동작，즉개관손모。연구일충이용변재파폭치，종이감소기파주기중각개관관평균개관전환동작적qZSI적PWM책략，이강저개관손모。재Matlab/Simulink방진배경하건립방진모형，험증제출적PWM책략，병여SPWM상비교。
The sinusoidal pulse width modulation (SPWM) strategy of quasi?Z?source inverter (qZSI) makes the shoot?through state insert between traditional zero vector and active vector. However,there are twice shoot?through states in each con?trol period,which results in many additional switching actions,i.e.,switching loss. A PWM method of qZSI to reduce the switching action is proposed by varied carrier amplitude. The simulation model was established in the Matlab/Simulink simula?tion environment to verify the proposed PWM method and compare with the traditional SPWM.
