Black Start and Voltage Establishment Strategy for PMSG-Based Wind Turbine

Frontiers in Energy Research

Sheng Huang¹  Guohang Huang¹  Pan Hu²  Dan Liu²  Kezheng Jiang²  Kan Cao²  Xiaotong Ji³ 

[1] College of Electrical and Information Engineering, Hunan University, Changsha, China;Hubei Electric Power Research Institute, Wuhan, China;State Grid Hubei Electric Power CO., LTD., Wuhan, China;

关键词: black start;    PMSG based;    wind turbine;    voltage establishment;    power balance;    voltage reference;   

DOI  :  10.3389/fenrg.2022.901708

来源: DOAJ

【 摘 要 】

During the black start, backup ac power sources such as diesel generators can offer line-side voltage reference for wind turbine and keep line-side converter of wind turbine work properly so that the dc-link capacitor voltage within converter can be established without overcharge. This study proposes a black start control strategy and line-side voltage establishment method for PMSG-based wind turbines with no ac power source. Unlike the traditional control strategy of full power grid-connected converters, the dc-link voltage within back-to-back full power converters of wind turbines can be controlled by generator-side converters, and the line-side voltage can be established by line-side converters with the help of fixed loads. The mechanical power can be balanced by pitch angle control, and the power unbalance between mechanical power and electrical power will be reflected in the rotor speed of PMSG. By this method, a single wind turbine can establish the line-side voltage with no extra backup ac power source, offering voltage reference for the other wind turbines during the black start of a wind power plant.

【 授权许可】

Unknown