Control of dynamic bus voltage in an intermediate bus architecture power system

摘要

To reduce power loss in an intermediate bus architecture power system, embodiments of the present invention provide an intermediate bus converter which converts an input voltage to an intermediate bus voltage using a converting unit; receives a signal indicative of an output of a converting unit; determines an intermediate bus voltage to reduce power loss in dependence upon the signal indicative of an output of the converting unit; generates a control signal to control the converting unit to convert the input voltage to the determined intermediate bus voltage; and generates an intermediate bus voltage in dependence upon the control signal.

主权项

1. An intermediate bus converter operable to generate an intermediate bus voltage (VIB) for use in an intermediate bus architecture power system having a plurality of point of load regulators, the intermediate bus converter comprising:
a converting unit operable to receive an input voltage (VIN) and a control signal (D) and operable to generate an intermediate bus voltage (VIB) based on the input voltage (VIN) and the control signal (D); a table storage unit configured to store a table relating respective outputs of the converting unit to respective intermediate bus voltages which reduce power loss; and a controlling unit operable to receive a signal available within the intermediate bus converter indicative of an output of the converting unit, determine an intermediate bus voltage (VIB) to reduce power loss in dependence upon the signal indicative of the output of the converting unit, and generate a control signal (D) for controlling the converting unit to generate the determined intermediate bus voltage (VIB) so that the intermediate bus converter determines an intermediate bus voltage to reduce power loss and performs voltage control to achieve the determined intermediate bus voltage without receiving output current and output voltage measurements from the point of load regulators, wherein the controlling unit is operable to determine the intermediate bus voltage (VIB) to reduce power loss by reading an intermediate bus voltage (VIB) from the stored table in dependence upon the signal indicative of the output of the converting unit.