B/e Aerospace, Inc.

Richard Rizzo

Qiao Lu

Steven Whisler

Timothy Andrew Birkmann

Edward J Bates

Shon Mattly

Michael E Wright

An inrush current protection circuit for a polyphase alternating current power system may include a plurality of current limiting resistors, each of which is electrically coupled in series between a respective one of a plurality of phases of the polyphase alternating current power source and a respective input of a polyphase transformer rectifier unit. The circuit may also include a plurality of power switches, each of which is electrically coupled in parallel with a respective one of the current limiting resistors, such that when each of the power switches is closed, essentially no electrical current flows through the respective current limiting resistor. The circuit may also include a power switch controller configured to control each of the power switches to be open such that an inrush current passes through the respective current limiting resistor rather than the power switch, and to be closed after a time delay has passed.

Systems and methods for polyphase alternating current transformer inrush current limiting

An aircraft-galley chiller, enclosed in a housing, including an evaporator condensate drying device. The galley chiller may operate on DC power and may be transported from one cart to another to provide chilled air to a particular cart.

Ultra small air chiller for aircraft galley

A wild frequency avionic refrigeration system and a controller therefore are provided. One embodiment of the refrigeration system includes: a refrigeration LRU including a vapor cycle system with a brushless DC compressor motor, a brushless DC condenser motor, a brushless DC evaporator motor and a plurality of sensors configured to output operating parameter data relative to the vapor cycle system; a power module configured to convert a wild frequency AC input voltage to at least one DC output voltage; a motor control module in communication with the brushless DC compressor, condenser and evaporator motors; and a processing module in communication with the plurality of sensors and the motor control module, wherein the processing module, according to the operating parameter data, outputs control signals to the motor control module for independently driving the brushless DC compressor, condenser and evaporator motors.

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Burbank, CA, United States of America

Richard Rizzo