CAJ | 학술논문

综合传统的无连线逆变器下垂并联方法和有连线分布式并联方法的优点,提出了一种电压基准预同步的逆变器并联系统及基于电力线通信（PLC）的实现方法。研究并实现了电压基准信号的同步控制,并联模块之间传递各基准信号的频率和相位差信息,通过同步控制算法调节使各基准信号的相位相互一致;在基准同步的基础上,由各并联逆变器之间传递的有功功率、无功功率信息各自生成功率差信号,提出了一种改进的功率调节累加算法,利用累加的功率差对电压基准信号的相位和幅度进行调节,实现了输出均流和并联模块的热插拔。仿真分析和实验结果证实了控制的有效性和可行性。
종합전통적무련선역변기하수병련방법화유련선분포식병련방법적우점,제출료일충전압기준예동보적역변기병련계통급기우전력선통신（PLC）적실현방법。연구병실현료전압기준신호적동보공제,병련모괴지간전체각기준신호적빈솔화상위차신식,통과동보공제산법조절사각기준신호적상위상호일치;재기준동보적기출상,유각병련역변기지간전체적유공공솔、무공공솔신식각자생성공솔차신호,제출료일충개진적공솔조절루가산법,이용루가적공솔차대전압기준신호적상위화폭도진행조절,실현료수출균류화병련모괴적열삽발。방진분석화실험결과증실료공제적유효성화가행성。
A novel inverter parallel system based on pre-synchronized voltage reference signal and output power difference regulation is proposed to take advantage of both the conventional wireless droop method and the distribution control method. The pre-synchronization control for voltage reference signal is implemented by combining power line communication （PLC） and digital signal processor （DSP） hardware with the corresponding software algorithm. In parallel system, the phase angle of each voltage reference signal is exchanged by PLC and regulated to be identical among all the modules. The active power and reactive power of each module are calculated and exchanged by means of communication such as PLC and controller area network （CAN） in parallel system to generate the output power differences. The accumulative power regulation algorithm is proposed with theoretical analysis in detail, and the phase and amplitude of the voltage reference signals are regulated by the output power differences. Simulation and experimental results are obtained in the dual-module parallel system to verify the validity and feasibility of the proposed control.