A Study of Discrete-Time Optimum Current Controller for the Virtual Synchronous Generator under Constraints

• 作者: Atushi Umemura Junji Tamura Rion Takahashi
• 来源期刊: 智能电网与可再生能源(英文)
• 学科: 工学
• 关键词: Wind Energy Generation Virtual SYNCHRONOUS GENERATOR Electric Current CONTROL Optimal CONTROL Discreate-Time Model Following CONTROL MULTI-OBJECTIVE Genetic Algorithm
• 年，卷（期）: 2020,（1）
• 页码范围: 1-20
• 页数: 20页
• 分类号: TP3

摘要

In recent years, power generation using renewable energy sources has been increasing as a solution to the global warning problem. Wind power generation can generate electricity day and night, and it is relatively more efficient among the renewable energy sources. The penetration level of variable-speed wind turbines continues to increase. The interconnected wind turbines, however, have no inertia and no synchronous power. Such devices can have a serious impact on the transient stability of the power grid system. One solution to stabilize such grid with renewable energy sources is to provide emulated inertia and synchronizing power. We have proposed an optimal design method of current control for virtual synchronous generators. This paper proposes an optimal control method that can follow the virtual generator model under constrains. As a result, it is shown that the proposed system can suppress the peak of the output of semiconductor device under instantaneous output voltage drop.