Square-wave converters with soft voltage transitions for ac powe

Details Square-wave converters with soft voltage transitions for ac powe Square-wave converters with soft voltage transitions for ac powe

1996-02-05

1996-10-22

Sterrett, Jeffrey L.

Electric power conversion systems

Current conversion

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

363132, H02M 3335

Patent

active

055683681

ABSTRACT:
A converter for an ac power distribution system provides a square-wave voltage of low output impedance to an ac power distribution bus for driving a plurality of loads, each load including a rectifier and an input filter capacitor. Slew-rate limiting capacitors are employed to limit the rate of change of voltage on the ac distribution bus, thereby substantially reducing or eliminating conducted and radiated interference from the power distribution system due to high-frequency components of current which would otherwise flow in parasitic capacitances. In addition, zero-voltage switching is employed to achieve highly efficient converter operation. As other advantages, this converter scheme allows for simplification of converters at the load end of the power distribution system (e.g., to simple rectifiers with post regulators), while producing lower ac line currents, lower current harmonics and higher power factors than those of a sine-wave generation system.

REFERENCES:
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