Drive systems using a. c. motors

Details Drive systems using a. c. motors Drive systems using a. c. motors

1974-12-17

1977-01-18

Rubinson, Gene Z.

Electricity: motive power systems

With flywheel or massive rotary member

318187, 318192, H02P 534

Patent

active

040042030

ABSTRACT:
A drive system comprises a brushless multi-phase motor which is supplied with power by way of an inverter including thyristors which are fired by a firing network. The firing network is supplied with information relative to the position of the rotor of the motor, by means of a transducer and this information flows by way of a logic network. Also provided is a current sensing device, a signal from which is passed through a control network to the logic circuit, and the logic circuit acts to modify the signals applied to the inverter in the event that the current flowing in one of the d.c. supply lines to the inverter exceeds a predetermined value for more than a predetermined length of time.

REFERENCES:
patent: 3612970 (1971-10-01), Sofan
patent: 3656047 (1972-04-01), Yarema et al.
patent: 3667014 (1972-05-01), Merhof et al.
patent: 3749991 (1973-07-01), Kuniyoshi
patent: 3763417 (1973-10-01), Johnston

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