EMC AND SAFETY DESIGN FOR PHOTOVOLTAIC SYSTEMS RESEARCH RESULTS FROM THE ESDEPS PROJECT

摘要

This paper gives an overview about the main work and results gained from the project "EMC and Safety Design for Photovoltaic Systems (ESDEPS)." Further new results from the last project year are presented. Recent investigations show, that PV inverters produce additional distortions, e.g. in the unregulated frequency range below 150 kHz. The propagation of these distortions into the mains is however unlikely. An analysis of PV stand alone systems on the Canary islands shows the weak points in operation and installation. Further EMC and operation properties of battery inverters for stand alone systems are presented. Demonstration installations to show various EMC and safety phenomena as well as measures for improvement have been built by the project partners.