Service Entrance Multiple-Function Power Converter for Quality Power Supply to Critical and Sensitive Loads

Critical and sensitive loads are growing rapidly as consequences of increasing demands of precision control and energy efficiency. These loads require a quality power supply and are particularly vulnerable to supply disturbances. This paper presents a simple, cost-effective multiple-function power electronic converter that significantly enhances the power quality at the service entrance to critical and sensitive loads. This converter is capable of processing multiple power conversions in a single-stage power electronic circuit. This paper describes four key operations of this converter: Active power line harmonics filtering, Uninterruptible power supply, Industrial energy storage conversion, and Reactive power compensation. In standard practices, each of these operations may require at least one power converter. The multiple-functions converter presented in this paper can carry out all these operations individually using one single-stage power electronic circuit. This paper details the design of this converter and provides simulations of the converter performance validated with experimental results.