CAJ | 학술논문

为从负载侧解决电能质量问题,本文提出了一种电能质量控制器.该装置将统一电能质量控制器与燃料电池结合,力图扩展统一电能质量控制器的补偿范围.该拓扑结构有利于装置的小型化,供能的多元化以及电网的绿化.燃料电池与超级电容结合的三端双向变换器用以维持直流侧电容电压的稳定.针对系统电压畸变且含多重零点,设计了一种简单实用的参考电压电流检测方法.依据参考信号对串并联逆变器分别采用双积分控制与单周电流控制,使输出补偿电压电流快速精确跟踪参考信号.单周电流控制主要由比较器和RS触发器构成,其输出驱动信号的频率固定,有利于无源滤波器设计及实际应用.仿真结果验证了该装置设计的合理性、可靠性及有效性.
위종부재측해결전능질량문제,본문제출료일충전능질량공제기.해장치장통일전능질량공제기여연료전지결합,력도확전통일전능질량공제기적보상범위.해탁복결구유리우장치적소형화,공능적다원화이급전망적녹화.연료전지여초급전용결합적삼단쌍향변환기용이유지직류측전용전압적은정.침대계통전압기변차함다중영점,설계료일충간단실용적삼고전압전류검측방법.의거삼고신호대천병련역변기분별채용쌍적분공제여단주전류공제,사수출보상전압전류쾌속정학근종삼고신호.단주전류공제주요유비교기화RS촉발기구성,기수출구동신호적빈솔고정,유리우무원려파기설계급실제응용.방진결과험증료해장치설계적합이성、가고성급유효성.
To solve the power pollution in load side,a novel device named power quality control device (PQCD) is presented. This device combined the unified power quality conditioner (UPQC) with the fuel cell to enhance the compensation scope of the UPQC and this topology was beneficial to the miniaturization of the device,the diversification of power supply and power grid greening. The three port bidirectional converter combining the fuel cell with a supercapacitor was utilized to maintain the DC-link capacitor voltage. To deal with the distorted system voltage with multiple zero crossings,a simple and practical harmonic detection method was designed. Based on the detected reference signals,the double integration control and one cycle current control were applied to rapidly and precisely track the voltage and current references,respectively. The one cycle current control mainly contained a comparator and a RS flip-flop and the frequency of the output signal was constant,therefore it is beneficial to the design of the passive filter and practical application. The simulation results illustrate the reasonableness,effectiveness and reliability of the power quality control device' s design.