Development and Evaluation of a Model Doubly-Fed Machine

摘要

The investigation described in the report includes the design and development of a model doubly-fed machine system and its evaluation for potential application on hydrogenerators and the pump/generating units of pump-storage projects. The evaluation demonstrates that the problem of instability can be overcome. Cycloconverters are suitable for the rotor power supply. However, because of absence of an amortisseur, attention should be given to control of ripple voltage and to surge protection of the rotor power supply. The machine has a wide variety of capabilities which are indicated to be presently practical for exploitation to satisfy special needs such as adjustable speed, rapid synchronizing ability, system damping, or superior frequency control of an isolated system.