中文摘要：

针对微电网电能质量问题，提出一种将微网储能单元与有源滤波器组合的新颖实用型电能质量调节装置，设计适用于该装置的双级变流器系统。给出了该系统的结构组成，分析装置的工作原理；基于含前馈校正的直流母线电压预测控制方法，控制调节双级变流器的直流母线电压；运用无需谐波电流检测的直接功率控制方法，对有源滤波器进行控制。该装置不仅能实现短时供电中断时的UPS功能，而且能够抑制谐波。仿真结果验证了该装置的可行性和有效性。

英文摘要：

According to the problems of micro-grid quality, proposes a new type of power quality regulating device, which combinated with micro-grid energy storage unit and the active power filter, applicable to the design of two-stage converter system of the device. Gives the structure of the system, and analyses the basic working principle. The DC bus voltage predictive control with feedforward correction is used to regulate the DC bus voltage of two-stage converter. The direct power control method without the harmonic current detection is used for the control of active power filter. The device not only realizes UPS function at short-term interruptions but also suppresses the harmonics. The simulation results verify the feasibility and effectiveness of the device.