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A Photovoltaic-based Improved Excitation Control Strategy of Three-phase Self-excited Induction Generator Suitable for Wind Power Generation

机译：适用于风力发电的三相自励式光伏发电机基于光伏的改进励磁控制策略

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摘要

Self-excited induction generators are extensively used for wind power generation in remote and grid-isolated areas. It is challenging to maintain constant voltage and frequency under variable loads and variable wind speed conditions for such kinds of generators. This article proposes a hybrid reactive power control technique for induction generators through a fixed capacitor bank connected at the stator terminals and a strategically switched inverter source. The inverter's DC bus is connected to a photovoltaic panel and a storage battery. This scheme provides stable voltage output with changing loads and widely varying wind speeds. The capacitor provides the bulk excitation current for the induction generator, while the inverter provides the additional reactive current desired to regulate the generator output voltage under variable wind speeds and variable loads. Suitable simulations and experiments validate the proposed concept.
机译：自励式感应发电机广泛用​​于偏远和电网隔离地区的风力发电。对于这种类型的发电机，在可变负载和可变风速条件下保持恒定的电压和频率具有挑战性。本文提出了一种感应发电机的混合无功功率控制技术，该技术通过连接在定子端子和策略开关逆变器源上的固定电容器组实现。逆变器的DC总线连接到光伏板和蓄电池。该方案可在负载变化和风速变化很大时提供稳定的电压输出。电容器为感应发电机提供大量的励磁电流，而逆变器提供所需的附加无功电流，以在可变风速和可变负载下调节发电机的输出电压。适当的仿真和实验验证了提出的概念。

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