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Direct Pulse Mode Change-over method from Asynchronous PWM to one Pulse Mode

机译:直接脉冲模式从异步PWM转换为一个脉冲模式的方法

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摘要

In this paper, a novel idrect pulse mode change-over method changing the pulse mode from asynchronous PWM to one pulse mode is discussed. In some kinds of applications, such as electrical railway traction system, for the purpose of reducing the excessive torque ripples and improving the adhesion and acoustic noise problem caused by the pulse mode change-over, the direct pulse mode changing from asynchronous PWM to one pulse mode is desired. THis novel method is realized by suing the over-modulation techniques to change the pulse mode smoothly form asynchronous PWM to one pulse mode. Because the middle pulse modes are not used in the novel method, there is no excessive torque ripples occurred.
机译:本文讨论了一种新颖的离散脉冲模式转换方法,将脉冲模式从异步PWM转换为一个脉冲模式。在某些应用中,例如电力铁路牵引系统,为了减少过多的转矩脉动并改善由脉冲模式转换引起的粘着和声噪声问题,直接脉冲模式从异步PWM变为一个脉冲模式是理想的。通过使用过调制技术将脉冲模式从异步PWM平稳地更改为一个脉冲模式,可以实现这种新方法。因为在新方法中未使用中间脉冲模式,所以不会出现过多的转矩脉动。

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