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首页> 外文期刊>Power Electronics, IET >Current-sharing bus and fuzzy gain scheduling of proportional–integral controller to control a parallel-connected AC/DC converter
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Current-sharing bus and fuzzy gain scheduling of proportional–integral controller to control a parallel-connected AC/DC converter

机译:比例积分控制器的均流总线和模糊增益调度,以控制并联的AC / DC转换器

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摘要

In this study, a current-sharing bus and fuzzy gain scheduling of proportional-integral (PI) controller to control a parallel-connected AC/DC converter are proposed. A simple current-sharing circuit is applied to divide the load current to calculate the peak input current of each converter module. Fuzzy gain scheduling of PI controller is used to compensate for the error of the output voltage. The dsPIC30F6010 microcontroller is applied in the voltage loop control. In addition, a hysteresis control circuit is used to control the current loop. The experimental performance evaluation is conducted on a prototype, with three converter modules that are parallel-connected, has 250 W/module and has a -48 V DC output voltage. The system offers the following advantages: the tight output voltage regulates both the steady-state operation and the transient response. The current sharing is quite good, and it is simpler to operate in the redundant mode.
机译:在这项研究中,提出了一种用于控制并联AC / DC转换器的均流总线和比例积分(PI)控制器的模糊增益调度。应用一个简单的均流电路对负载电流进行分压,以计算每个转换器模块的峰值输入电流。 PI控制器的模糊增益调度用于补偿输出电压的误差。 dsPIC30F6010微控制器应用于电压环路控制。另外,磁滞控制电路用于控制电流环路。实验性能评估是在一个原型上进行的,该原型具有三个并联连接的转换器模块,每个模块具有250 W功率,并且具有-48 V直流输出电压。该系统具有以下优点:紧密的输出电压可调节稳态工作和瞬态响应。电流共享非常好,并且在冗余模式下操作更简单。

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