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Title: Methods, systems and apparatus for controlling operation of two alternating current (AC) machines

Patent ·
OSTI ID:1055718

A system is provided for controlling two alternating current (AC) machines via a five-phase PWM inverter module. The system comprises a first control loop, a second control loop, and a current command adjustment module. The current command adjustment module operates in conjunction with the first control loop and the second control loop to continuously adjust current command signals that control the first AC machine and the second AC machine such that they share the input voltage available to them without compromising the target mechanical output power of either machine. This way, even when the phase voltage available to either one of the machines decreases, that machine outputs its target mechanical output power.

Research Organization:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-07NT43123
Assignee:
GM Global Technology Operations LLC (Detroit, MI)
Patent Number(s):
8,193,747
Application Number:
12/473,988
OSTI ID:
1055718
Country of Publication:
United States
Language:
English

References (1)

Optimum Current Control in the Field-Weakened Region for Permanent Magnet AC Machines conference September 2007