Current control strategy for power conditioners using sinusoidal signal integrators in synchronous reference frame
Current control strategy for power conditioners using sinusoidal signal integrators in synchronous reference frame
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DOI：
10.1109/tpel.2005.857558
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发表时间：
2005-11-01
影响因子：
6.7
通讯作者：
Profumo, F
中科院分区：
文献类型：
--
作者：
Bojoi, RI;Griva, G;Profumo, F
提出了一种基于正弦信号积分器（ssi）的比例积分调节器的并联型电力调节器电流控制方案。其目的是简化基于ssi的电流谐波补偿的实施，以满足对市电电流谐波失真的严格限制。为了补偿电流谐波，ssi被实现在正负序列信号上同时工作。在静止参考系中实现了基波电流分量的一个稳压器。对于电流谐波，其他的调节器都是在基频旋转的同步参考系中实现的。这允许用一个调节器同时补偿两个电流谐波，与在固定参考框架中使用正弦信号积分器的其他电流控制方法相比，大大减少了计算量。作者还提出了一种简单、鲁棒的电压滤波器，用于在市电电压失真的情况下，对共耦合点的电压矢量进行平滑、准确的位置估计。整个控制算法已在16b定点数字信号处理器（DSP）平台上实现，控制了一台20kva功率调节器样机。本文在感性和容性负载上的实验结果表明了所提方法的有效性。
In this paper, a current control scheme, based on proportional-integral regulators using sinusoidal signal integrators (SSIs), is proposed for shunt type power conditioners. The aim is to simplify the implementation of SSI-based current harmonic compensation for industrial implementations where strict limitations on the harmonic distortion of the mains' currents are required. To compensate current harmonies, the SSIs are implemented to operate both on positive and negative sequence signals. One regulator, for the fundamental current component, is implemented in the stationary reference frame. The other regulators, for the current harmonies, are all implemented in a synchronous reference frame rotating at the fundamental frequency. This allows the simultaneous compensation of two current harmonies with just one regulator, yielding a significant reduction of the computational effort compared with other current control methods employing sinusoidal signal integrators implemented in stationary reference frame. A simple and robust voltage filter is also proposed by the authors to obtain a smooth and accurate position estimation of the voltage vector at the point of common coupling (PCC) under distorted mains' voltages. The whole control algorithm has been implemented on a 16-b, fixed-point digital signal processor (DSP) platform controlling a 20-kVA power conditioner prototype. The experimental results presented in this paper for inductive and capacitive loads show the validity of the proposed solutions.