UPS outage-mode output power capacity expansion approach via Bi-directional converter

Jiann Fuh Chen, Juei Lung Shyu

Research output: Contribution to journalConference articlepeer-review


A novel UPS topology is proposed to increase outage-mode output power capacity. The proposed UPS provides a regulated sinusoidal voltage to the load via a voltage controlled inverter (VCI), and provides a sinusoidal line current with low total harmonic distortion via a PFC rectifier. The proposed system maintains the benefits of conventional UPS such as near-unity input power factor and well regulated output voltage. To obtain good output voltage regulation, a load current disturbance compensator is added to achieve good dynamic response, especially in the presence of nonlinear loads.

Original languageEnglish
Pages (from-to)690-695
Number of pages6
JournalProceedings of the Intersociety Energy Conversion Engineering Conference
Publication statusPublished - 2002 Dec 1
Event2002 37th Intersociety Energy Conversion Engineering Conference, IECEC - Washington, DC, United States
Duration: 2002 Jul 292002 Jul 31

All Science Journal Classification (ASJC) codes

  • Fuel Technology
  • Electrical and Electronic Engineering


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