Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Patent
1998-02-20
2000-02-08
Wong, Peter S.
Electric power conversion systems
Current conversion
With means to introduce or eliminate frequency components
363 98, 318811, H02M 112, H02P 528
Patent
active
060234172
ABSTRACT:
A method and apparatus for selecting one of several different modulating signals for use with a system including a PWM controller and an inverter to generate low frequency alternating voltages on three motor supply lines, modulating signals selected as a function of a modulating index to minimize harmonic distortion in the alternating voltages, minimize switching losses, maximize overall system gain at high modulating index values and maximize the linear range of system operation.
REFERENCES:
patent: 5657216 (1997-08-01), Kaura
patent: 5706186 (1998-01-01), Blasko
patent: 5811949 (1998-09-01), Garces
patent: 5850132 (1998-12-01), Garces
Hava Ahmet M.
Kerkman Russel J.
Allen-Bradley Company LLC
Horn John J.
Jaskolski Mike A.
Miller John M.
Patel Rajnikant B.
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