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首页> 外文期刊>IEEE Transactions on Industrial Electronics >An Adaptive PI Controller Design for DC-Link Voltage Control of Single-Phase Grid-Connected Converters
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An Adaptive PI Controller Design for DC-Link Voltage Control of Single-Phase Grid-Connected Converters

机译：单相并网变换器直流环节电压控制的自适应PI控制器设计

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摘要

Conventionally, standard proportional and integral (PI) controllers with constant PI gains are commonly used for the dc-link voltage control of single-phase grid-connected converters (GCCs). For such controllers, the selection of the PI gains will lead to a tradeoff between two control objectives: 1) the reduction of the dc-link voltage fluctuations caused by random swings of the active power drawn by the single-phase GCC; and 2) the reduction of the grid current harmonics mainly caused by the 2f oscillation of the active power in single-phase applications. To solve this tradeoff, this paper presents a systematic approach for the design of an adaptive PI controller for the dc-link voltage control of single-phase GCCs. The proposed design approach is simple and it provides a convenient method to properly determine the adaptive PI controller parameters. Representative simulation and experimental results are presented and discussed in order to show the effectiveness of the proposed dc-link voltage controller.
机译：传统上，具有恒定PI增益的标准比例和积分（PI）控制器通常用于单相并网转换器（GCC）的直流链路电压控制。对于此类控制器，PI增益的选择将导致在两个控制目标之间进行权衡：1）减少由单相GCC抽取的有功功率的随机摆动引起的直流链路电压波动； 2）电网电流谐波的减少，这主要是由于单相应用中有功功率的2f振荡引起的。为了解决这一折衷，本文提出了一种系统的方法，用于设计用于单相GCC的直流链路电压控制的自适应PI控制器。所提出的设计方法简单，并且为适当确定自适应PI控制器参数提供了一种方便的方法。提出并讨论了代表性的仿真和实验结果，以证明所提出的直流母线电压控制器的有效性。

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