摘要
分析了2种传统的抗负荷冲击策略,提出了一种数字控制三相逆变器抗冲击负荷的保护策略,该策略是在瞬时值硬件限流的基础上增加了软件平均值限流,结合了瞬时值硬件限流的快速性和软件限流波形好的特点,对逆变器起到了有效的保护作用,本策略的可行性和优越性已通过实验证实,并给出了实验波形。
Two conventional strategies on resisting impulsive load were analyzesd. A strategy on resisting impulsive load for three-phase inverter based on DSP was proposed. The strategy adds the average current limiting method through software on the basis of instantaneous current limiting method through hardware, which combines the characteristics of both methods, instantaneous current limiting method has rapid dynamic response and the other one has good waves of voltage and current in short-circuit circumstance. With this strategy inverter is effectively protected. The experiment results are given to validate the feasibility and advantage of the strategy presented.
出处
《电气传动》
北大核心
2007年第4期35-37,共3页
Electric Drive
基金
国家自然科学基金重点项目(50237020)
关键词
逆变器
限流
保护
策略
inverter current limiting protection strategy
