TFW series three-phase ac generators for synchronous brushless generator and its communication exciter excitation source of three times by the host of stator windings and harmonic wave winding. This series of composite provide generator both brushless generator, have the advantages of three harmonic generator. It can directly with the power of no-load start a rat trap asynchronous motor, 4. The manual and automatic control, manual AVR voltage adjustment can < 5%, AVR voltage regulation can < 0.5%. Simple structure, convenient maintenance. Reliable performance. Is an ideal power products.