Starting system for brushless motor

Details Starting system for brushless motor Starting system for brushless motor

1981-10-19

1983-07-05

Truhe, J. V.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318803, 318808, 363 65, H02P 126

Patent

active

043920993

ABSTRACT:
A first static commutator including a first controllable thyristor rectifier and a first thyristor inverter and a second static commutator including a second controllable thyristor rectifier and a second thyristor inverter are provided. First three-phase AC voltage is supplied to the first controllable rectifier, and second three-phase AC voltage 30 degrees out of phase with said first three-phase AC voltage is supplied to the second controllable rectifier. A brushless motor includes first star-connected three-phase windings receiving the output of the first inverter and second star-connected three-phase windings and 30 degrees out of phase with said first three phase windings. During the starting period of the brushless motor the conduction of the first and second satic commutators is switched for every 30-degree rotation of the brushless motor.

REFERENCES:
patent: 3696278 (1972-10-01), Kuniyoshi et al.
patent: 3887859 (1975-06-01), Hubner
patent: 3949283 (1976-04-01), Okuyama et al.
patent: 4030005 (1977-06-01), Doemen
patent: 4084220 (1978-04-01), Akamatsu
patent: 4132931 (1979-01-01), Okuyama et al.
patent: 4160938 (1979-07-01), Akamatsu

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