A Novel Single-Phase UPS Inverter by Error-Tracking Mode PWM Scheme

Autor:	Shinzo Tamai, Masaaki Ohshima, Yuushin Yamamoto, Haruyoshi Mori, Fuminori Nakamura
Rok vydání:	2000
Předmět:	Engineering business.industry Mode (statistics) Industrial and Manufacturing Engineering Control theory Electronic engineering Equivalent circuit Inverter Voltage regulation Electrical and Electronic Engineering business Electrical impedance Pulse-width modulation Voltage
Zdroj:	IEEJ Transactions on Industry Applications. 120:104-111
ISSN:	1348-8163 0913-6339
DOI:	10.1541/ieejias.120.104
Popis:	This paper proposes a novel single-phase UPS inverter modulated by Error-Tracking Mode PWM scheme. An ac voltage regulation scheme which matches the PWM scheme is newly developed in a theoretical way. Since Error-tracking Mode PWM is based on constantly-sampled data, the controller is suited to be digitally implemented. The equivalent circuit of the UPS inverter controlled by the schemes is derived. The output impedence is found to be composed mainly of resistance differently from general ac apparatus.According to the newly-developed schemes, a 3kVA, 100V, 50Hz UPS inverter is experimentally fabricated in which the sample period is 10μs and the average switching frequency is 6kHz. No load, linear load and non-linear load characteristics are measured. The output voltage remains almost sinusoidal even for the rated non-linear load. The output impedences are also measured and well agreed with the intended values.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::50e038ac2e1dfa9a2bcca87495846f5b https://doi.org/10.1541/ieejias.120.104 Zobrazit plný text záznamu