Abstract
Induction motors are usually considerably oversized and consequently often work inefficiently because of various factors such as the relatively poor voltage quality that is allowed in public and industrial networks. A possible solution is the amendment of power quality rules. This paper presents a preliminary proposal to modify the power quality standards: EN 50160 Voltage characteristics of electricity supplied by public distribution network and EN-ICE 61000-2-4 Electromagnetic compatibility (EMC) – Part 2–4: Environment – Compatibility levels in industrial plants for low-frequency conducted disturbances. The proposal consists of a complete set of power quality indices with simplified temperature coefficient of power quality, the value of which corresponds to the windings temperature rise of induction machines with decreased supply voltage quality. The recommended limit values for the coefficient are determined according to an analysis of various cases of induction machine heating. Additionally, the results of the factor monitoring in actual power systems are presented.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
