Self-starting single-phase synchronous motor

Details Self-starting single-phase synchronous motor Self-starting single-phase synchronous motor

1982-08-17

1985-02-19

Truhe, J. V.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318783, 318400, H02P 142

Patent

active

045008256

ABSTRACT:
A self-starting single-phase synchronous motor without an auxiliary coil comprises a diametrically magnetized permanent-magnet rotor and a two-pole stator provided with exciter coils. A PTC resistor (5) is arranged in the circuit (1) of the exciter coils. The PTC resistor is proportioned so that its resistance will increase to a continuously permissible load resistance value after approximately 0.5 to 1 sec.

REFERENCES:
patent: 3965392 (1976-06-01), Moorhead
patent: 4198669 (1980-04-01), Kulwicki
patent: 4306264 (1981-12-01), Alessio
patent: 4387412 (1983-06-01), Woods
patent: 4408244 (1983-10-01), Weible

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