一种基于单周期数字控制的三相逆变器的研究

Research on One-cycle Digital Control for Three-phase Inverter

提出一种基于单周期数字控制的三相全桥逆变器算法,采用该算法设计的逆变器具有稳定性和可靠性高、控制电路简单、动态速度快、开关频率恒定、调试方便、维护容易等优点。详细分析了单周期数字控制三相全桥逆变器的工作原理,推导出该逆变器的双极性控制算法。最后通过实验样机对该算法进行了验证,结果表明,该算法是正确和可行的。

This article proposes an algorithm on one-cycle digital control for three-phase full-bridge inverter, the in- verter using the algorithm has many advantages of high stability and high reliability, simple control circuit, fast dy- namic speed, constant switching frequency, ease of debugging, ease of maintenance etc.The working principle of one- cycle digital control for three-phase full-bridge inverter is analyzed, the control algorithm of the bipolar inverter is de- duced.Finally, the algorithm is validated through experimental prototype ,the results show that the algorithm is correct and feasible.