非理想电网条件下的同步逆变器控制策略

CHEN Jie

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非理想电网条件下的同步逆变器控制策略

更新时间：2025-08-13

- 非理想电网条件下的同步逆变器控制策略
- Automation of Electric Power Systems Vol. 42, Issue 9, Pages: 127-133(2018)
- 作者机构：
  
  南京航空航天大学自动化学院,江苏省,南京市,210016
- 作者简介：
- 基金信息：
- DOI：
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- Published：2018
- 稿件说明：
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CHEN Jie. [J]. Automation of electric power systems, 2018, 42(9): 127-133.
DOI：

CHEN Jie. [J]. Automation of electric power systems, 2018, 42(9): 127-133. DOI：

摘要

同步逆变器可模拟同步发电机的机械惯性及一次调频、调压特性，有助于改善配电网/微电网的运行性能。针对非理想电网条件下同步逆变器的关键技术展开了研究。在简要阐述同步逆变器基本模型的基础上，详细分析了非理想电网对入网电流的影响；提出了一种基于双二次广义积分的电感电流参考值改进算法，采用电网电压前馈的方法消除非理想电网电压带来的影响。推导分析了LC型同步逆变器的改进型电网电压前馈控制策略中主要参量之间的基本关系及其设计方法，并结合同步逆变器输出阻抗特性的变化规律给出了一种合理的理论解释。最后，搭建了仿真模型和实验验证平台，仿真和实验结果验证了所提控制策略的正确性和有效性。

Abstract

Synchronverters can imitate the characteristics of the synchronous generators including the rotor inertia

frequency and voltage regulation

which is helpful in improving the operational performance of the distribution network or microgrid. This paper focuses on the control scheme for synchronverters under non-ideal grid condition. The control model of the synchronverters in time domain is introduced briefly. Then

the impacts of the unbalanced and harmonic grid voltages to the grid current are analyzed. An improved method is proposed to calculate the current reference value based on the double second order generalized integrator

in which the improved grid voltage feed-forward control scheme is adopted to suppress the harmonic and unbalanced components of current affected by non-ideal grid. The basic relationship and the design method between the main parameters of the improved grid voltage feed-forward control strategy for the LC synchronous inverter are derived and analyzed

and a reasonable theoretical explanation is given based on the output impedance characteristics of the synchronous inverters. Finally

both simulation and experimental platform are established

and simulation and experimental results verify the correctness and feasibility of the proposed control scheme.

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