Electricity: motive power systems – Series motors – Convertible for nonseries motor operation
Patent
1985-03-19
1987-01-27
Miller, Charles D.
Electricity: motive power systems
Series motors
Convertible for nonseries motor operation
318246, 318248, 318252, 318426, 318497, H02P 712
Patent
active
046396470
ABSTRACT:
A method of controlling and a controller for controlling at least one series motor is provided. Rectifier means is connected in series with the motor so that current through a field winding of the motor is always in the same direction irrespective of the polarity of the input voltage while the current direction through an armature of the motor reverses in accordance with the polarity of the input voltage. An energizing current is applied to the field winding by a bias power supply to ensure that the field winding always produces some flux during operation of the motor.
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Krings, B. J., "Alternative Systems for Rapid-Transit Propulsion", Westinghouse Engineer, Mar. 1973, pp. 34-41.
IBM Technical Disclosure Bulletin, vol. 7, No. 11, p. 990, Apr. 1965, "Multimode Control of DC Series Motor", by T. R. Fredriksen.
Miller Charles D.
Ro Bentsu
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