| 摘要 |
PURPOSE:To reduce torque pulsation factor and raise efficiency by improving secondary current waveform with a converter and a DC reactor connected to the multiplexed secondary coils of a a coil type inductor. CONSTITUTION:On two secondary windings being wound on the same rotor and are insulated with a shifting by pi/6 in an electric angle, converters 7, 8 and DC reactors 9, 10 are connected, while the ouput side of each DC reactors are connected collectively to a separately excited inverter 11, and the AC side of the separately excited inverter is connected to the primary side of an induction machine 12. Accordingly, for a thyristor Scherbius motor mode operation, the rotational frequency fn of a rotor is lower than power supply frequency f0, secondary generation energy corresponding to slip frequency is fed back to power supply side, said controller comes to have a correspondingly higher efficiency than a conventional control type systems, feedback current waveform is improved and the pulsation torque of the motor is reduced. |
