在变速恒频双馈风电机组中，交流励磁双馈风力发电机的设计和制造技术是十分关键的。
The design and manufacture for MW-class AC-excited doubly-fed generator is very important in the variable speed constant frequency doubly-fed wind power system.
在系统发生功率振荡时，通过改变转子励磁电压的相角调节双馈变速风电机组输出与振荡相关的阻尼功率，达到使风电场能够改善系统阻尼的目的。
During the power oscillation of a power system, a damping active power is injected into the network from the DFIG machine via regulating the rotor excitation voltage Angle.
在系统发生功率振荡时，通过改变转子励磁电压的相角调节双馈变速风电机组输出与振荡相关的阻尼功率，达到使风电场能够改善系统阻尼的目的。
During the power oscillation of a power system, a damping active power is injected into the network from the DFIG machine via regulating the rotor excitation voltage Angle.
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