船用逆变电源两级死区补偿控制策略

Two-Level Dead-Time Compensation Control Strategy for Marine Inverter

针对舰船用电设备对高品质逆变电源的需求,研究了逆变电源的死区补偿技术。阐述了主电路的数学模型和三闭环控制方案,分析了死区产生的原因和导致的死区效应。针对单级死区补偿技术在负载变化时所残留的死区效应,提出包含载波级和基波级的两级死区补偿控制策略。试验结果表明,建立的两级死区补偿控制策略不但使逆变电源能保持良好的静态和动态响应特性,还能进一步降低输出谐波,优化波形质量。

Aiming at the demand of high-quality inverter power supply for ship electrical equipment,the dead-time compensation technology of inverter power supply is studied.The mathematical model of the main circuit and the three closed-loop control scheme are expounded,and the causes of the dead-time and the dead-time effect are analyzed.Aiming at the residual dead-time effect of single-stage dead-time compensation technology when the load changes,a two-level dead-time compensation control strategy including carrier-level and fundamental-level is proposed.The experimental results show that the two-level dead-time compensation control strategy established not only makes the inverter maintain good static and dynamic response characteristics,but also further reduces the output harmonic and optimizes the waveform quality.