Measured efficiency improvements of induction motors with thyristor/triac controllers

Autor:	Ewald F. Fuchs, W. J. Hanna
Rok vydání:	2002
Předmět:	Engineering business.industry TRIAC Energy Engineering and Power Technology Thyristor Power factor Automotive engineering law.invention Phase-fired controllers Control theory law Derating Harmonics Electrical and Electronic Engineering business Transformer Induction motor
Zdroj:	IEEE Transactions on Energy Conversion. 17:437-444
ISSN:	0885-8969
DOI:	10.1109/tec.2002.805180
Popis:	The deployment of inexpensive thyristor/triac controllers improve the efficiency and do not increase the power factor of induction motors (as measured at the input of pole transformer) operating under variable torque and constant speed constraints. Computer-aided testing yields detailed input/output powers for the drive. The improvement of the power factor does not increase the real-power capability (RPC) of a transformer supplying power to such drives due to current harmonics. Although the total harmonic current distortion (THDi) may exceed IEEE 519 and IEC 555 recommendations, recent publications show that the impact on the apparent power derating of a 25 kVA pole transformer is small if the THDi is less than 50%.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0b9826180570f8a80fa1647fc727f2e9 https://doi.org/10.1109/tec.2002.805180 Zobrazit plný text záznamu