单向全桥可控电容充电型逆变器

Single Phase, Full Bridge, Controlled Capacitor Charging Type Inverter

可控电容充电法是一种通过输入端的不可控直流电压来求得输出端的正弦波形的新技术，这种方法利用可控电容的充放电来实现所需的电压波形．电容并联在负载两端，当施加高频脉冲时，通过电感实现充放电．基于控制器的误差信号，触发脉冲可以具有正极性或负极性．在每个激励状态下，控制器通过电感检测输出电压和电流来实现零电流开关，从而保证输出电压以滞环方式跟踪给定的电压波形．论文用MATLAB做了仿真，仿真结果验证了所提方案的正确性．

Controlled Capacitor Charging（CCC） is a new technique to synthesize sinusoidal voltage at the output from the unregulated DC at the input. The method is based on controlled charging/discharging of a capacitor to realize the desired voltage waveform. A capacitor that is connected across the load is charged/discharged through an inductor by applying high frequency pulses. Applied pulses could be of either positive or negative polarity depending on the error signal in the controller. The controller senses the outputvoltage and the current through the inductor to maintain Zero Current Switching（ZCS） at every turn - on, while keeping the output - voltage close to the reference waveform by a hysteresis algorithm. The proposed controller is simulated in MATLAB. Supporting results from experimental prototype confirm the usefulness of the proposed inverter.