Research high frequency DC/AC/DC converter control system optimization. In order to optimize the frequency DC/AC/DC converter transient and steady - state performances, the paper used three - pole, two zero controllers to solved the question of high frequency DC/AC/DC switch converter transition condition and the stable state performance difference. By using state space average method and Euler formula, a small signal mathematical model of full - bridge DC/AC/DC converter was established. According to the established mathematical model, the frequency domain method was used to design the system and ensure that the output voltage of the system has a good line regulation and load regulation rate. The simulation results show that, the three - pole, two zero control strategy is better adjusting characteristics of both dynamic and steady state errors than the traditional PI control, and the overshoot and adjusting time have been significantly improved, so it provide a reference to the optimization of controller design.%研究高频DC/AC/DC开关变换器的控制系统优化问题.由于该变换器是典型的非线性系统,采用的PI控制器存在响应速度慢、超调量大等问题.为克服上述问题,优化高频DC/AC/DC开关变换器的暂态和稳态性能,采用了三极点、两零点控制器,解决了高频DC/AC/DC开关变换器的暂态和稳态性能差的问题.利用状态空间平均法及欧拉公式建立了全桥式DC/AC/DC开关变换器的动态小信号数学模型,根据所建立的数学模型采用频域法对系统进行设计,保证系统输出电压具有良好的电源调整率和负载调整率.仿真结果表明,三极点、两零点控制策略比传统PI控制具有更好的动态调节和稳态误差调节特性,超调量、调节时间等都得到了明显的改善,并为控制器设计优化提供了参考.
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