Driving circuit for a switching element including an improved po

Details Driving circuit for a switching element including an improved po Driving circuit for a switching element including an improved po

1991-07-25

1993-06-01

Shoop, Jr., William M.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318798, 318782, 363131, 363 59, H02M 752

Patent

active

052163490

ABSTRACT:
The switching of upper and lower switching elements is controlled by respective upper and lower arm driving circuits. Those switching elements are connected in series across a primary d.c. power source and their successive switching generates a drive voltage which is applied to a load. A secondary d.c. power source is connected to the lower arm driving circuit while the upper arm driving circuit is connected to a capacitor connected to the high potential side of the primary d.c. power source. The capacitor is charged from the secondary d.c. power source through a charging circuit. This driving arrangement is particularly applicable to multi-phase driving circuits.

REFERENCES:
patent: 3538419 (1969-03-01), Seki et al.
patent: 3619759 (1971-11-01), Seki
patent: 3628126 (1971-12-01), Kawakami et al.
patent: 4050005 (1977-09-01), Maginness

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