Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Reexamination Certificate
2005-08-30
2005-08-30
Riley, Shawn (Department: 2838)
Electric power conversion systems
Current conversion
With means to introduce or eliminate frequency components
Reexamination Certificate
active
06937486
ABSTRACT:
The power converters employing the provided methods and controllers are proposed. The controller includes: a signal preprocessor for generating a current signal according to a sensed current of the transformer, an integrator electrically connected to the signal preprocessor for integrating the current signal and offering an integrated signal, a synthesizer electrically connected to the integrator for receiving and synthesizing the integrated signal and a slope compensation signal to generate a synthesized signal, an operational amplifier of a control loop for generating an amplified error signal, and a PWM comparator electrically connected to the operational amplifier and the synthesizer for comparing the amplified error signal and the synthesized signal and generating a PWM signal to turn on and off a switch of the transformer accordingly.
REFERENCES:
patent: 4858094 (1989-08-01), Barlage
patent: 5376872 (1994-12-01), Hara
Guo XingKuan
Liu Teng
Ying Jianping
Zeng Jianhong
Delta Electronics , Inc.
Riley Shawn
Volpe and Koenig P.C.
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