Series-connected, all-hybrid converters for utility interactive applications

Girish R. Kamath, Ned Mohan

Research output: Contribution to conferencePaperpeer-review

9 Scopus citations

Abstract

Power Electronics systems can provide solutions to power quality problems in the form of active filters and advanced SVCs (STATCOM). A conventional approach involves a pulse-width-modulated converter which is interfaced to the utility voltage (for example at 13.8 KV level) through a line-frequency transformer. This increases the size and the cost of the system and introduces additional losses. This paper describes a per-phase, all-active approach where the need for a line-frequency transformer is eliminated by series connected converters. This all-active solution is a hybrid combination of two (or more) converters switching at line frequency (or its low multiple) and one converter pulse width modulated at a higher switching frequency. This paper includes the following: Criteria for optimization, experimental results from a proof-of-concept laboratory prototype for an active filter application and a comparative evaluation with the six-switch PWM converter for an SVC application.

Original languageEnglish (US)
Pages726-731
Number of pages6
StatePublished - 1997
EventProceedings of the 1997 23rd Annual International Conference on Industrial Electronics, Control, and Instrumentation, IECON. Part 2 (of 4) - New Orleans, LA, USA
Duration: Nov 9 1997Nov 14 1997

Conference

ConferenceProceedings of the 1997 23rd Annual International Conference on Industrial Electronics, Control, and Instrumentation, IECON. Part 2 (of 4)
CityNew Orleans, LA, USA
Period11/9/9711/14/97

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