Commutatorless motor device

Details Commutatorless motor device Commutatorless motor device

1979-02-26

1982-01-05

Truhe, J. V.

Electricity: motive power systems

Synchronous motor systems

Armature winding circuits

318722, 318803, 318805, H02P 742, H02P 540, H02P 762

Patent

active

043096476

ABSTRACT:
In a commutatorless motor device including a synchronous motor driven through a frequency converter including gate-controlled electric valves, and a device for detecting the phase voltages of the synchronous motor, a device for dividing the detected phase voltages by a signal corresponding to the speed of the synchronous motor. The outputs of the dividing device are fed to a logic signal converter which converts them into signals corresponding to the position of the rotating magnetic field of the synchronous motor. The outputs of the logic signal converter are passed through a logic circuit and a gate-pulse generating circuit for generating gate pulses for controlling the electric valves of the frequency converter.

REFERENCES:
patent: 3887853 (1975-06-01), Klein et al.
patent: 3894277 (1975-07-01), Tachibana et al.
patent: 4051419 (1977-09-01), Takahashi
patent: 4074174 (1978-02-01), Kuge
patent: 4160940 (1979-07-01), Wolf
"During Characteristics of the Commutatorless Motor . . . ", S. Tadakuma et al., Transactions of I.E.E. of Japan, vol. 98, No. 1 (SH053-1).

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