CAJ | 학술논문

DFIG的并网技术主要有三种：带独立负载并网、孤岛并网和空载并网。空载并网由于其实现简单,并网时冲击电流小,在风电并网中占有很大的优势。文章根据DFIG的运行特点,提出了基于电网电压定向的空载并网控制策略,根据电机转速和电网电压来调节转子励磁电流,实现了有功和无功解耦控制。
DFIG적병망기술주요유삼충：대독립부재병망、고도병망화공재병망。공재병망유우기실현간단,병망시충격전류소,재풍전병망중점유흔대적우세。문장근거DFIG적운행특점,제출료기우전망전압정향적공재병망공제책략,근거전궤전속화전망전압래조절전자려자전류,실현료유공화무공해우공제。
The grid-connection technology of DFIG mainly include：taking independent load grid,island grid and idle load grid-connect.The idle load grid-connect has large advantage in wind power grid,because of operating simply and small impact current in grid-connect.According to the operating characteristics of DFIG,the paper proposes some control strategies of idle load grid-connect.Based on grid voltage orientation,the paper realizes decoupling control of active power and reactive power by controlling motor speed and grid voltage to regulate the rotor excitation current.