Study of combined type smart-grid u sing matrix converter

本研究提出了采用矩阵变流器的功率变流器，以提高配电网的质量和稳定性，以实现智能电网的目的，即同时利用自然电源稳定分布式电源的波动功率，并向用户提供高质量的电力。作为这项研究的结果，提到了以下几点。提出了三相四线制矩阵变流器--单相三线式电能分配变换(简称单相MC)和电能变换的电路结构控制方法。成为波形整形的障碍，因为输入电流中包含负相位分量。在此基础上，提出了单相逆变器功率变换时输入电流中不含负相分量的功率变换系统。由于所提出的控制方法在输入电流中也包含了第三次谐波分量，因此通过连接输入无源滤波器来减小谐波电流，从而使该第三次谐波电流不会流入电源侧。提出了在负载或电源电压变化时控制输出电压幅值和相位的控制方法，并通过仿真验证了控制效果。

This study is what proposes use of the power converter which used the matrix converter in order that a distribution system might improve the quality of it and be stable for the purpose for realizing a smart grid, It is the technique of making it possible simultaneously the stabilization using natural power sources of the fluctuating electric power of a distributed power source, and to supply high quality electric power to a consumer. The following things are mentioned as a result of this study.1. The method of controlling for the circuit configuration of the matrix converter for three phase 4-wire system-single phase 3 line type electric energy conversion for power distribution (it is called as single phase MC) and electric energy conversion was proposed.2. Becoming an obstacle of waveform shaping, since a negative phase components include in the input currents. Then, the power conversion system which does not contain a negative phase component in input current was proposed at the time of the powerconversion by single phase MC.3. Since the third harmonic wave component was contained in addition in the inputcurrent also in the proposed controlling method, harmonic current was reduced by connecting a input passive filter so that this third harmonic wave current might not be made to flow into the power supply side.4. Moreover, the controlling method which controls the amplitude and phase of output voltage when load or power supply voltage change was examined was proposed, and the effect was verified by the simulation.