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1. (WO2018067839) VARIABLE SPEED DRIVE WITH A BATTERY

Pub. No.:    WO/2018/067839    International Application No.:    PCT/US2017/055373
Publication Date: Fri Apr 13 01:59:59 CEST 2018 International Filing Date: Fri Oct 06 01:59:59 CEST 2017
IPC: H02P 27/08
H02M 5/458
H02J 9/06
Applicants: JOHNSON CONTROLS TECHNOLOGY COMPANY
KOPKO, William L.
FEDERMAN, Israel
KOHLER, Jay A.
JADRIC, Ivan
Inventors: KOPKO, William L.
FEDERMAN, Israel
KOHLER, Jay A.
JADRIC, Ivan
Title: VARIABLE SPEED DRIVE WITH A BATTERY
Abstract:
Embodiments of the present disclosure relate to a heating, ventilating, air conditioning, and refrigeration (HVAC&R) system that includes a variable speed drive (VSD) (52) configured to supply power to a motor (50) configured to drive a compressor (32) of the HVAC&R system, a rectifier (102) of the VSD (52) configured to receive alternating current (AC) power from an AC power source (108) and convert the AC power to direct current (DC) power, a DC bus (106) of the VSD (52) electrically coupled to the rectifier (102), an inverter (104) of the VSD (52) electrically coupled to the DC bus (106), where the inverter (104) is configured to convert the DC power to output AC power, the output AC power has a variable voltage and a variable frequency, and the output AC power is directed to the motor (50), and a battery (100) electrically coupled to the DC bus (106), where the battery is configured to provide auxiliary DC power to the VSD (52).