Synchronous motor structure incorporating rotor having solid pol

Details Synchronous motor structure incorporating rotor having solid pol Synchronous motor structure incorporating rotor having solid pol

1975-03-20

1977-06-07

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310162, 310183, H02K 124

Patent

active

040285740

ABSTRACT:
A synchronous motor incorporates a rotor structure having solid poles. In order to improve the starting characteristic of the motor and protect the pole claws against burning, conductive bars are arranged at each side of the pole below the pole shoe and are electrically connected with the pole to form a quadrature-winding which provides a conductive path for currents induced at the pole surfaces by the time-variable quadrature-field and causes such currents to close around the quadrature-field thereby eliminating current from pole-to-pole by way of the claws. The quadrature-winding also forms a circuit parallel to the solid pole surfaces which thereby improves the asynchronous torque characteristics at low slip rates and reduces the oscillating torque.

REFERENCES:
patent: 1369765 (1921-03-01), Alexander
patent: 2303481 (1942-12-01), Liwschitz
patent: 2411002 (1946-11-01), Rudenberg
patent: 2449506 (1948-09-01), Pollard
patent: 2736829 (1956-02-01), Sills
patent: 3127532 (1964-03-01), Gynt
patent: 3612930 (1971-10-01), Raby
patent: 3740600 (1973-06-01), Turley

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