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Title:
SYSTEM FOR CONTROLLING ROTARY ELECTRIC MACHINES TO REDUCE CURRENT RIPPLE ON DIRECT CURRENT BUS
Document Type and Number:
WIPO Patent Application WO/2012/125339
Kind Code:
A3
Abstract:
The system (11) comprises a first' motor (26) for applying rotational energy to a respective first wheel (30) of the vehicle. A second motor (28) is arranged for applying rotational energy to a respective second wheel (32) of the vehicle. A first inverter (22) is coupled to the first motor (28), where the first inverter (22) is capable of receiving direct current electrical energy from the direct current bus (12). The first Inverter (22) is configured to provide a first group of alternating currents with a corresponding reference phase. A second inverter (24) is coupled to the second motor (28). The second Inverter (24) Is capable of receiving direct current electrical energy from the direct current bus (12). The second inverter (24) is configured to provide a second group of alternating currents with a phase shift with respect to the reference phase, such that the phase shift is effective to reduce the direct current ripple on the direct current bus (12).

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Inventors:
SINGH BRIJ N (US)
Application Number:
PCT/US2012/027853
Publication Date:
April 24, 2014
Filing Date:
March 06, 2012
Export Citation:
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Assignee:
DEERE & CO (US)
SINGH BRIJ N (US)
International Classes:
H02P5/50
Foreign References:
US20060192430A12006-08-31
US6392905B12002-05-21
US20040160201A12004-08-19
US20080001572A92008-01-03
US20090034308A12009-02-05
US6429632B12002-08-06
US3781615A1973-12-25
US20080234087A12008-09-25
Other References:
See also references of EP 2686950A4
Attorney, Agent or Firm:
BARTHOLOMEW, Darin, E. (Global Intellectual Property ServicesOne John Deere Plac, Moline IL, US)
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