摘要
为分析直驱永磁风电系统在小扰动下的稳态性能和动态特性,建立了以PWM变流器为控制目标的数学模型,通过对PWM导通情况的调节来实现对直驱永磁风电系统输出的控制,设计了非线性控制策略.Matlab/Simulink的仿真结果表明该控制策略能增强系统的稳定性控制性能,保证系统在较大的风速变化范围内实现功率地有效调节,并能较好的实现风电系统在小扰动状况下的稳定.
The differential algebraic model for the control objectives of PWM converter is established. The model can be used to analysis the small signals stability and dynamic stability of permanent magnet synchronous generator (PMSG) wind power system. Based on the mathematical model, the nonlinear control scheme for the PWM converter is proposed. The simulation results verify the validity of the model ,also it show that the control law can enhance the stability of the system within the larger wind speed range.
出处
《武汉理工大学学报(交通科学与工程版)》
2013年第6期1259-1263,共5页
Journal of Wuhan University of Technology(Transportation Science & Engineering)
基金
福建省科技厅自然基金项目(批准号:2012N51010)
南平市科技项目基金项目(批准号:Z2010Z10(8))
校质量工程项目(批准号:xj2012007)资助