Calculating Overvoltages in Windings of Synchronous Motors with Thyristor Frequency Converters

Autor:	N. V. Donskoi, V. F. Shepelin, E. I. Ivanchina
Rok vydání:	2020
Předmět:	Physics Stator business.industry Electrical engineering Thyristor Converters Throttle law.invention Rectifier Electromagnetic coil law Electrical and Electronic Engineering Synchronous motor business Voltage
Zdroj:	Russian Electrical Engineering. 91:41-48
ISSN:	1934-8010 1068-3712
Popis:	Analysis of overvoltages on the windings of synchronous motors caused by recharging of the insulation capacitances of motor stator windings connected with switching of valve currents has been carried out. The effect of a connecting cable line on the overvoltages of the motor is demonstrated. Formulas for determining the EMF phases of the network and the motor are presented. Expressions for determining bias EMF and zero-sequence EMF are examined. Oscillograms of variations in the current of the motor phases, the output voltage of the rectifier, and the insulation voltage of the motor are presented. Based on an analysis of the calculated quantities, conclusions are drawn and recommendations given for switching on the windings of a smoothing throttle.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::78eceb8a47c5fe742b4dc39fec29883b https://doi.org/10.3103/s1068371220010101 Zobrazit plný text záznamu Full text from SpringerLink