Electric power conversion systems – Current conversion – With condition responsive means to control the output...
Patent
1995-08-23
1997-03-25
Hecker, Stuart N.
Electric power conversion systems
Current conversion
With condition responsive means to control the output...
363 41, 363 98, H02M 324, H02M 542, H02M 744
Patent
active
056150997
ABSTRACT:
A control system for a single-phase PWM converter composed of a plurality of power switching devices which converts an AC single-phase voltage to a DC voltage under PWM control. The control system includes a converter voltage reference operation unit for inputting a converter DC side voltage actual value, a converter DC side voltage reference value, a converter AC side current actual value, a power source voltage, and a power source voltage sine wave phase and for generating voltage references for respective phases, and a triangular wave generation unit for generating a triangular wave, such that when the power source voltage sine wave phase is in a phase wherein a magnitude of a converter AC side current reference value is small a frequency of the triangular wave is low, and when the power source voltage sine wave phase is in a phase wherein the magnitude of the converter AC side current reference value is large a frequency of the triangular wave is high. The control system further includes a triangular wave comparison unit for comparing the voltage references and the triangular wave to generate PWM signals for respective phases. Each of the PWM signals is applied to one of the power switching devices in the single-phase PWM converter to PWM control the single-phase PWM converter, respectively.
REFERENCES:
patent: 4663702 (1987-05-01), Tanaka
patent: 4860186 (1989-08-01), Maekawa et al.
patent: 5021936 (1991-06-01), Nishizawa et al.
patent: 5136494 (1992-08-01), Akagi et al.
patent: 5373223 (1994-12-01), Akage et al.
patent: 5446647 (1995-08-01), Ikeda et al.
Hecker Stuart N.
Kabushiki Kaisha Toshiba
LandOfFree
Control system for single-phase PWM converter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control system for single-phase PWM converter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control system for single-phase PWM converter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2209081