三电平升压和NPC变流器接口的PMSG风力发电机组固定开关频率预测控制

2020 3rd International Conference on Energy, Power and Environment: Towards Clean Energy Technologies Pub Date : 2021-03-05 DOI:10.1109/ICEPE50861.2021.9404476

Kristiyan Milev, F. Alshammari, V. Yaramasu, M. Durán, Kishore Yadlapati

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引用次数: 3

摘要

基于二极管整流器、三电平(3L)升压变换器和3L中性点箝位(NPC)逆变器的功率转换系统，与基于中压永磁同步发电机的风力涡轮机的背靠背连接的NPC变换器相比，是一种经济有效且可靠的解决方案。本文研究了一种新的预测控制方案，用于控制3L升压变换器和具有固定开关频率、高速跟踪和精确锁定的NPC逆变器。针对3L升压变换器和NPC逆变器，分别设计了由无差拍电流控制和调制模型预测电流控制组成的双解耦控制回路。三电平升压变换器的控制器具有中性点电压控制和电感电流控制的双重功能。NPC逆变器控制器在固定框架内调节电网电流，实现有功和无功同时控制。

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Predictive Control with Fixed Switching Frequency for Three-Level Boost and NPC Converters Interfaced PMSG Wind Turbine

A power conversion system based on a diode rectifier, three-level (3L) boost converter and 3L neutral-point clamped (NPC) inverter is a cost effective and reliable solution in contrast to the back-to-back connected NPC converter for the medium-voltage permanent magnet synchronous generator-based wind turbines. This paper investigates a novel predictive control scheme to operate the 3L boost converter and an NPC inverter with fixed switching frequency, high-speed tracking, and accurate locking in steady state. A dual decoupled control loop consisting of deadbeat current control and modulated model predictive current control has been developed for the 3L boost converter and NPC inverter, respectively. The controller for three-level boost converter performs dual functions such as neutral-point voltage control and inductor current control. The controller of NPC inverter regulates the grid currents in stationary frame for the simultaneous control of active and reactive powers.

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2020 3rd International Conference on Energy, Power and Environment: Towards Clean Energy Technologies

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