航空功率信号源逆变控制器的建模与仿真

Modeling and Simulation of Inverter Control Strategy for High Precision Power Signal Source Based on Saber

为达到国家军用标准G JB 181A-2003对航空功率信号源性能指标的要求,在结合电压平均值模型,和双环反馈优缺点的基础上提出了一种以电压平均值为外环,电压瞬时值做中环,电流瞬时值内环的逆变器多环控制方案,并分析了其控制原理,在此基础上建立了Saber仿真模型。经仿真验证,证明了该方案综合了电压平均值反馈和双环反馈的优点,具有很大的电压和频率调节范围和很好的稳态性能和动态性能,可以满足航空测试用功率信号源的性能要求,是一种有实际应用价值的优良逆变器控制方案。

Because Aeronautic testing power signal source needs high performance of transient and steady responses, the traditional Constant Voltage and Constant Frequency （CVCF） inverter control strategy can＇ t reach the standards of it. For achieving wide frequency and voltage conversion, this paper presents a multi - loop control scheme based on the analysis of the performance with average voltage model and double closed - loop control, then analyzes the theory of the multi - loop control, and establishes a simulation model by Saber. Simulation results indicate that this control scheme includes the merit of both the average voltage model and double closed - loop control, and shows high performance in transient and steady responses. The performance of this multi - loop control scheme can meet the requirements of aeronautic testing power signal source.