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基于负载电流控制的PWM整流电路

更新时间:2020-09-16 10:55:51 大小:250K 上传用户:六3无线电查看TA发布的资源 浏览次数:15 下载积分:2分 免费领20积分 评价赚积分 (如何评价?) 标签:负载电流控制pwm整流电路 收藏 评论(0) 举报

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三相全桥PWM整流电路的暂态过程,是一个非线性系统的暂态过程,从数学的角度对其进行精确分析是比较困难的。本文通过构造一个简单的开关函数Sx(t),在不同控制策略下,从数学的角度上,简单分析负载发生变化时系统的暂态过程。通过对传统控制策略的分析,针对其弊端,本文提出一种基于直流侧负载电流的PWM控制策略,能够快速识别负载变化,并做出动作;使直流侧电容电压快速稳定,并且波动不大。

Three-phase Bridge PWM rectifying circuit is transient and nonlinear, which makes it relatively difficult to analyze it mathematically. In this paper the transience of the system as load changes is preliminarily analyzed with the help of a construction of a simple switching function Sx(t) under different control strategies. By analyzing the traditional control strategy and finding out its drawbacks, this paper proposes a PWM control strategy, based on the load current of the DC side, which can identify the load changes and react quickly so that the voltage of the DC side capacitor can stabilize in a short time and with little fluctuation.

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基于负载电流控制的PWM整流电路.pdf 250K

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