Hybrid pulse width modulation method and apparatus

Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components

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H02M 112

Patent

active

057061866

ABSTRACT:
A method and/or apparatus to be used with a triangle comparison PWM controller for receiving three original reference signals and providing three modified reference signals that extend the linear relationship between the original reference sign and output voltages and reduce switching losses. A variable factor can be altered to change the form of the modified reference signals to provide various modified reference signals each of which has certain advantages. Advantageously, among other producible reference signals, one producible modified reference signal is shaped such that a resulting output voltage is identical to an output voltage that would be generated using space vector PWM controller.

REFERENCES:
patent: 5091841 (1992-02-01), Tuusa
patent: 5136216 (1992-08-01), Wills et al.
patent: 5153821 (1992-10-01), Blasko
patent: 5552977 (1996-09-01), Xu et al.
patent: 5610806 (1997-03-01), Blasko et al.

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