Single-phase asynchronous motor with two windings

Details Single-phase asynchronous motor with two windings Single-phase asynchronous motor with two windings

1998-09-28

1999-10-26

Ro, Bentsu

Electricity: motive power systems

Induction motor systems

Primary circuit control

318782, 318786, H02P 142

Patent

active

059734728

ABSTRACT:
A motor whose stator is equipped with a main winding (DP) and with an auxiliary winding which consists of two half-windings (B1, B2) that are wound in opposite directions and is supplied through a full-wave rectifier (GR) and by means of two commutating switches (T1, T2) controlled by a control circuit (COM) which alternately closes the switches at a frequency equal to the frequency of the supply voltage. The motor comprises, in parallel with the half-windings, at least one device (DAP) which limits the voltage across the terminals of the switches when they are opened, to a value higher than the supply voltage.

REFERENCES:
patent: 4520303 (1985-05-01), Ward
patent: 4672284 (1987-06-01), Ward
patent: 5483139 (1996-01-01), Welles, II

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