兆瓦级直驱永磁同步风力发电机系统研究

针对兆瓦级海上直驱永磁风力发电系统性能要求高、调试难度大、研制周期长,研究一种电机设计与控制优化结合的场路耦合仿真研究方法。针对带有斜极斜槽结构的发电机性能受多参量耦合影响、PI控制的模型依赖性,研究了利用多变量、多目标耦合优化电机尺寸参量,利用Ansoft有限元法建立发电机精确模型。基于Maxwell与Simplorer对发电机侧双闭环PI控制进行了场路耦合仿真,模拟了四种不同风速扰动、电磁耦合影响参数摄动共同作用下的动态起动过程,结果验证了系统实现最大功率追踪的可行性。

Research for Megawatt Direct-Driven Permanent Magnet Synchronous Wind Generator System

Aiming at high performance requirements and difficulty of debugging,long period for research and production of megawatt offshore permanent magnet generator system,the field-circuit coupled simulation research method which combined design and control optimization for generator was proposed.This method aimed at multi parameters coupled for performance effect of generator with skew pole and slot,and the model dependence of PI control strategy,size parameters of generator were optimized by using multivariable multiobjective coupled optimization,generator accurate model was established by using Ansoft finite element method.The generator side double closed-loop PI was verified by the field-circuit coupled simulation on Maxwell and Simplorer,dynamics start-up process of generator was simulated under four kinds of wind speed interfere,electronics and magnetics coupled conduced to parameters perturb.The simulation results verified the feasibilities of maximum power point tracking for system.