Electric power conversion systems – Current conversion – With condition responsive means to control the output...
Patent
1999-06-01
2000-09-05
Wong, Peter S.
Electric power conversion systems
Current conversion
With condition responsive means to control the output...
323222, 323288, H02M 542
Patent
active
061152749
ABSTRACT:
A controller for a polyphase discontinuous conduction mode (DCM) boost converter, a method of controlling a DCM boost converter and a DCM boost converter incorporating the controller or the method to reduce its input current distortion. The DCM boost converter (which typically has only a single switch) includes: (1) a ripple detector, coupled to a polyphase input of the DCM boost converter, that develops a ripple signal based on an input ripple voltage and (2) a harmonic modulator, coupled to the ripple detector, that develops a ramp signal based on the ripple signal and a control signal and controls a switching frequency and a duty cycle of a switch in the DCM boost converter based on the ramp signal and an output voltage excursion signal.
REFERENCES:
Jang and Jovanovic, "A new input-voltage feedforward harmonic-injection technique with nonlinear gain control for single-switch, three-phase, DCM boost rectifiers", IEEE, pp. 885-887; Mar. 1999.
Jang and Jovanovic, "A comparative study of single-switch, three-phase, high-power-factor rectifiers", IEEE, pp. 1095-1096; Feb. 1998.
Laxton Gary L
Lucent Technologies - Inc.
Wong Peter S.
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