Title :
A switched-mode 200 A 48 V rectifier/battery charger for telecommunications applications
Author :
Vescovi, Tino F. ; Vun, Nicholas C H
Abstract :
A 200 A rectifier has been specifically designed to power telephone switching equipment. It is a constant-voltage, current-limited PWM SMPS (switched-mode power supply) with instrumentation and other features suitable for this type of application. A controlled rectifier utilizing MOSFET switches converts the 3-phase-input AC power to a regulated 400 V DC supply. The switching scheme ensures that the input current waveforms are sinusoidal. A forward converter then transforms the 400 volt supply to the regulated 48 volt nominal output required for this application.<>
Keywords :
battery chargers; pulse width modulation; rectifying circuits; switched mode power supplies; telephone switching equipment; 200 A; 3-phase-input AC power; 400 V; 48 V; MOSFET switches; PWM SMPS; battery charger; rectifier; sinusoidal input current waveforms; switched-mode power supply; telephone switching equipment; Batteries; Communication switching; MOSFET circuits; Pulse width modulation; Rectifiers; Signal processing algorithms; Switched-mode power supply; Telecommunication switching; Telephony; Voltage;
Conference_Titel :
Telecommunications Energy Conference, 1990. INTELEC '90., 12th International
Conference_Location :
Orlando, FL, USA
DOI :
10.1109/INTLEC.1990.171233
