含变流环节损耗的并网双馈感应电机潮流建模  

POWER FLOW MODELING TO GRID-INTERGRATED DFIGs INCLUDING POWER LOSS OF CONVERTER CIRCUIT

作　　者：李生虎[1] 董王朝 

机构地区：[1]合肥工业大学电气与自动化工程学院

出　　处：《太阳能学报》2018年第1期264-271,共8页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51277049)

摘　　要：提出基于机组潮流的背靠背变流器与直流电容有功损耗算法。将背靠背变流器、直流环节、感应电机与电网潮流方程联立,提出并统一求解计及变流环节的双馈感应电机（DFIG）并网潮流模型。通过与并网DFIG潮流模型计算结果对比,发现加入变流环节可使DFIG内部电压降低,绕组损耗减小,其效果随风速增加而明显,结果验证了所提算法模型的有效性。The active loss of the DFIG considering the B2B converters and the DC circuit was derived. The constraints of the B2B converter, the DC link, the induction generator, and the power system were solved simultaneously, thus a unified power flow model including the converter circuit was newly proposed. Compared with the existing power flow result to the grid-integrated DFIG, it is found that including the converter circuit reduces the inner voltage and windings＇ loss. The effect is more obvious with higher wind speed, which validates the effectiveness of the proposed model.

关 键 词：风电 电能损耗 变流器 电力系统潮流分析 

分 类 号：TM614[电气工程—电力系统及自动化] TM731