Closed - loop control of matrix converter used for variable speed constant frequency supply system 矩阵变换器在永磁交流伺服系统中的应用研究
Sliding mode control during variable speed constant frequency doubly - fed wind generator no - load connecting electric grid 变速恒频双馈风力发电机空载并网滑模控制
By use of electronic inverter , variable speed constant frequency ( vscf ) electrical generating system converts variable frequency ac power from generator to constant frequency ac power 变速恒频电源系统是通过电子变换器将发电机输出的变频交流电转换成为飞机用电设备所需的恒频交流电。
The characteristics of wind turbine generators as well as features of the fixed pitch wind turbine generator and the variable pitch wind turbine generator are presented , emphasizing on the variable speed constant frequency ( vscf ) generating system based on doubly - fed generators and on the control system for pitch angles 在简述风力机特性的基础上,介绍了定桨距和变桨距发电机组的特点,重点分析了基于双馈发电机的变速恒频发电系统及桨叶节距角控制系统。