Solid state d.c. motor control

Details Solid state d.c. motor control Solid state d.c. motor control

1985-09-10

1986-12-02

Shoop, Jr., William M.

Electricity: motive power systems

Battery-fed motor systems

318259, 318262, 318263, 318269, 318270, H02P 517

Patent

active

046267506

ABSTRACT:
The system includes a plurality of parallel-connected power field effect transistors arranged for connection in series with the traction motor with a common control circuit connected to the gate electrodes of the field effect transistors to control the on-off cycle of conduction through the field effect transistors. A plurality of parallel connected power diodes are arranged for reverse connection in parallel with the traction motor to serve as freewheeling diodes. The diodes are physically positioned apart from one another and distributed in position among the field effect transistors and each diode is positioned in a similar manner with a group of associated field effect transistors for ease of transfer of current flow between the diode and the associated field effect transistors.

REFERENCES:
patent: 3188545 (1965-06-01), Sheheen
patent: 3213343 (1965-10-01), Sheheen
patent: 3349309 (1967-10-01), Dannettell
patent: 3855520 (1974-12-01), Stich
patent: 4211961 (1980-07-01), Marumoto et al.
patent: 4292573 (1981-09-01), Ebert et al.

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