MULTI-PHASE BIDIRECTIONAL DC TO DC POWER CONVERTER CIRCUITS, SYSTEMS AND METHODS WITH TRANSIENT STRESS CONTROL

摘要

A circuit, system, and method for a multi-phase bidirectional DC/DC power converter includes a plurality of single phase DC/DC power converter circuits coupled in electrical parallel. A converter controller includes a compensator and a saturation limit function module. The compensator is configured to generate a control signal based on a current command signal and an actual current signal. The saturation limit function module is configured to determine a saturation limit for the compensator while the compensator is in a disabled state. The converter controller is configured to disable one or more of the plurality of power converter circuits, match the saturation limit values of the compensator to current operating values when one or more of the plurality of single phase DC/DC power converter circuits is disabled, and re-enable the one or more of the plurality of power converter circuits using the matched saturation limit values to limit transient current stress as any disabled phases and compensators are re-enabled.

主权项

1. A multi-phase bi-directional DC/DC power converter comprising:
a plurality of single phase DC/DC power converter circuits coupled in electrical parallel, each of the plurality of single phase DC/DC power converter circuits configured to receive electrical power from a first electrical bus operating at a first voltage level and to provide electrical power to a second electrical bus operating at a second voltage level, each of the plurality of single phase DC/DC power converter circuits configured to receive electrical power from said electrical bus operating at the second voltage level and to provide electrical power to the first electrical bus operating at the first voltage level; and a converter controller configured to:
control an operation of said plurality of single phase DC/DC power converter circuits independently of each other;disable one or more of said plurality of single phase DC/DC power converter circuits to increase an efficiency of said multi-phase bi-directional DC/DC power converter; andre-enable the one or more of said plurality of single phase DC/DC power converter circuits such that current through the one or more of said plurality of single phase DC/DC power converter circuits is limited to control a transient current stress.