Constant-power rectifiers for constant-power telecom loads

Abstract

Constant-power loads that dominate in telecommunication plants feature a constant-power characteristic. Because of this they draw more current at a lower supply voltage than in normal operating conditions. If not over-sized, a power supply plant with constant-current rectifiers can latch after an interruption of the input line, and then the battery remains discharged. This paper shows that the use of rectifiers with constant-power output characteristic is an economic way for avoiding costly over-sizing or a risk of potential system breakdown.<>