Voltage inverter

Details Voltage inverter Voltage inverter

1989-05-17

1990-04-24

Salce, Patrick R.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

363132, 323266, H02M 3335

Patent

active

049204700

ABSTRACT:
An inverter circuit includes a transformer having a primary winding with a first end adapted to be connected to a d.c. source, a switch connecting the other end of the primary winding to a reference potential, a secondary winding coupled to the primary winding, a rectifier for rectifying the output of the secondary winding, and a bridge switch circuit connected to invert the rectified secondary winding voltage to produce an a.c. output voltage. The inverter circuit further includes a first control circuit for producing a first pulse train of pulses having a first given frequency and a pulse width responsive to the rectified output voltage of the secondary winding, and a circuit for applying the pulse train to the switch for controlling the switch to open and close at the given frequency. The inverter circuit further includes a second control circuit for producing a second pulse train or pulses of a second given frequency and constant pulse width, and a control arrangement for controlling the bridge switch circuit with the second pulse train of pulses.

REFERENCES:
patent: 4410926 (1983-10-01), Hafner et al.
patent: 4533986 (1985-08-01), Jones
patent: 4706177 (1987-11-01), Josephson
patent: 4761722 (1988-08-01), Pruitt
Harada; "Phase-Controlled DC/AC Converter with High-Frequency Switching"; IEEE, vol. 3, No. 4, 10/88.

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