In this paper, a back-to-back PWM converter is considered as the optimum scheme of ac excitation power supply and its operation principle and control strategy are discussed in detail.
在分析了其他变频器的局限性后，指出了双PW M变频器是交流励磁的最佳电源方案，详细地讨论了电压型双pw M变频器的工作原理与控制策略。
The control system reaches the optimum by choosing the right control algorithm and control strategy.
通过选择合适的控制算法和控制律，使控制系统达到优化。
By researching of control strategy of set, we acquire optimum set control strategy, which is significant to improve stability of pumping station and economic benefit.
通过对机组控制策略的研究，获取最优机组控制策略，对提高泵站的稳定性和经济效益都具有重要的意义。
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