The study on boost DC1DC converter, which can be used in the first-stage of single-phase grid-connected inverter, is presented. The topology and principle of this interleaved multiphase DC/DC converter is first analyzed in detail, the system average model is then derived. To ensure steady output and fast dynamic response, the voltage controller is designed to be typical lead-lag compensation circuit based on the derived average model. To simplify system hardware, digital signal processor (DSP) is used to implement the controller algorithm and PWM signals, and the overall configuration and controller's implementation based on DSP are finally given. The effectiveness of theoretical analysis and control strategy is verified by prototype experiments.%对燃料电池/太阳能单相并网逆变器中的前级升压DC/DC变换器进行研究,详细分析了交错并联DC/DC变换器的电路拓扑和工作原理,推导了其系统平均模型,在此基础上将电压调节器设计成典型的超前一滞后网络,确保了系统的稳定性和动态性能.用DSP实现控制器算法和PwM信号生成,简化了硬件设计,给出了系统总体结构和控制器的DSP具体实现.实验结果验证了理论分析和控制策略的有效性.
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