中文摘要：

分析了逆变器输出电压的幅值和相位对并联系统输出功率的影响,提出一种互动跟踪式无主从并联控制方法.通过同步母线实现各模块的正弦参考电压同步,每个模块由DSP的I/O口发出同步脉冲,同时用捕获口检测同步母线上的同步脉冲信号,强制各模块的正弦参考电压相互同步.利用CAN总线控制各逆变器正弦参考电压的幅值以均分无功功率.采用数字信号处理器（DSP）TMS320LF2407实现全数字化并联系统设计.实验结果表明此方案能实现无主并联和N＋1冗余且有较好地并联均流效果.

英文摘要：

This paper analyzes the influence of the amplitude and phase of the inverters output voltage on the power of the parallel system, A no-master-slave control strategy for paralleling inverter based on an interactive following method is proposed. The method realizes the synchronization of the sinusoidal reference voltage of every module through synchronizing bus, that is, all the modules send their own synchronization pulse to the synchronization bus through the I/O port of DSP, at the same time, monitor the synchronization bus by catching port, and the phase of the sinusoidal reference voltage of each module is forced consistent with each other according to the synchronization pulse on the synchronization bus. The amplitude of the reference voltage of each module is controlled by CAN bus to share the reactive power. The DSP （TMS320LF2407） is adopted to realize fully digitized control in this system. The experimental results demonstrate that the function of N＋1 redundance can be realized and the good sharing current effect is gained.