Power Delivery at Service Entrance Enhanced Using DSP-Multiple-Functions Converter

This paper presents an improvement of utility service entrance power quality and energy transfers using an industrial-proven power converter, operated by state-of-the-art digital signal processor (DSP) and controlled with specially designed intelligent software. This service-entrance multiple- functions (SEMF) converter was designed for a Canadian public utility for its service entrance supply innovation program. This paper describes 4 key SEMF operations: active service-entrance harmonics filtering, uninterruptible supply to critical loads, energy storage conversion, and reactive power compensation. In standard practices, each of these operations requires at least one converter. However, one SEMF converter implements all operations using smart DSP controls for service entrance supply innovation that a device having such practical multiple-functions capability has not been reported. This paper details the SEMF converter design and its robust cost-effective hardware and software realization, and analyzes the converter performance that has been validated with field measurements at a utility site.