New control scheme for AC-DC-AC converter without DC link electrolytic capacitor

Submitted by OEST on May 10, 2015 - 5:28pm

Title	New control scheme for AC-DC-AC converter without DC link electrolytic capacitor
Publication Type	Conference Paper
Year of Publication	1993
Authors	Kim JS, Sul SK
Conference Name	Power Electronics Specialists Conference, 1993. PESC '93 Record., 24th Annual IEEE
ISBN Number	VO -
Keywords	5 muF, AC motor drive, AC motor drives, AC motors, AC-AC power convertors, AC-DC power convertors, AC/DC/AC power convertor, active power balance, Analog-digital conversion, back-to-back circuits, Bridge circuits, Capacitors, Ceramics, DC link voltage, DC-AC power convertors, harmonics, Load management, power factor, Power system harmonics, Reactive power, six-pulse bridges, small ceramic capacitor, Static power converters, three-phase, unity power factor, Voltage control, voltage regulation
Abstract	A novel concept for a static three-phase to three-phase power converter for an AC motor drive with unity power factor and reduced harmonics on the utility line is presented. The power circuit consists of two back-to-back connected six-pulse bridges having only a 5-μF ceramic capacitor in the DC link. By controlling the active power balance between two bridges, the DC link voltage can be maintained within a 20-V deviation from the nominal value with the small ceramic capacitor regardless of the load variation
DOI	10.1109/PESC.1993.471913