Electrical transmission or interconnection systems – Plural supply circuits or sources – One source floats across or compensates for other source
Patent
1990-06-26
1993-01-26
Pellinen, A. D.
Electrical transmission or interconnection systems
Plural supply circuits or sources
One source floats across or compensates for other source
363 95, 363 98, 307 56, H02J 332, H02M 324
Patent
active
051824639
ABSTRACT:
A 3-phase converter apparatus, in which a 3-phase A.C. power supply and a 3-phase converter operate in parallel on a common load BUS so as to share the load power, has an output voltage command generating device for generating an instantaneous command of the output voltage from the converter, and instantaneous voltage control device for controlling the converter so as to reduce the deviation of the instantaneous value of the output voltage of the converter from the instantaneous command generated by the output voltage command generating device. The converter includes at least one semiconductor switch for effecting a plurality of switching cycles in a half cycle of the A.C. power, so that the control of the phase of the output voltage of the converter with respect to the A.C. power supply is started at any moment.
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"New Conversion System for UPS Using High Frequency Link", Yamoto et al., PESC '88 Record, Apr., 1988.
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"Three Phase Parallel Processing UPS Using Multi-Functional Inverter" Takao Kawabata, Nobuo Sashida, et al.; Conference Record of the 1989 IEEE Industry Applications Annual Meeting.
"UPS Systems Using Multi-Functional Inverters", T. Kawabata, N. Sashida, et al.; Intelec 87 Conference Proceedings; Sheraton Stockholm Hotel; Stockholm, Jun. 14-17, 1987.
Kawabata Takao
Sashida Nobuo
Yamamoto Yuushin
Yamasaki Yuuko
Elms Richard T.
Mitsubishi Denki & Kabushiki Kaisha
Pellinen A. D.
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