Modulators – Pulse or interrupted continuous wave modulator – Pulse width modulator
Patent
1997-09-05
1999-03-23
Mis, David
Modulators
Pulse or interrupted continuous wave modulator
Pulse width modulator
327176, 375238, H03K 708
Patent
active
058865861
ABSTRACT:
A constant frequency pulse-width modulator that realizes various control schemes with trailing-edge, leading-edge or double-edge modulation is disclosed. This PWM modulator, which employs one or more integrator with reset stages, can be generally applied to implement feed-forward control of a family of converters, current mode control with linear or non linear compensating slope, and a family of unity-power-factor rectifiers at continuous or discontinuous conduction mode.
REFERENCES:
patent: 5506533 (1996-04-01), Wu
K.M. Smedley and S. Cuk, "One-Cycle Control of Switching Converters," in Institute of Electrical & Electronics Engineers Power Electronics Specialists Conference proceedings, pp. 888-896, Apr. 1991.
D.M. Sable, B.H. Cho, and R.B. Ridley, "Use of Leading-Edge Modulation to Transform Boost and Flyback Converters into Minimum Phase Zero Systems," Institute of Electrical & Electronics Engineers Trans. on Power Electronics, vol. 6, No. 4, pp. 704-711, Oct 1991.
K.M. Smedley, "Integrators in pulse width modulation," Institute of Electrical & Electronics Engineers Power Electronics Specialists Conference proceedings, pp. 773-781, Jul. 1996.
J. Jin, G. Joos, M. Pande, P.D. Ziogas, "Feedforward Techniques Using Voltage Integral Duty-Cycle Controls," Institute of Electrical & Electronics Engineers Power Electronics Specialists Conference proceedings, pp. 371-377, Mar. 1992.
L. Calderone, L. Pinola, V. Varoli, "Optimal feedforward compensation for PWM DC/DC converters with linear and quadratic conversion ratio," Institute of Electrical & Electronics Engineers Trans. on Power Electronics, vol. 7, No. 2, pp. 349-355, Apr. 1992.
B. Arbetter and D. Maksimovic, "Feed-forward Pulse-width Modulators For Switching Power Converters," Institute of Electrical & Electronics Engineers Power Electronics Specialists Conference proceedings, pp. 601-607, Jun. 1995.
R.D. Middlebrook and S.Cuk, "A general unified approach to modeling switching-converter power stages," Institute of Electrical & Electronics Engineers Power Electronics Specialists Conference proceedings, pp. 73-89, Jun. 1976.
R.D. Middlebrook, "Predicting Modulator Phase lag in PWM converter feedback loops," Proceedings of of Powercon 8, Dallas, TX, pp. 245-250, Apr. 1981.
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D. Maksimonvic, Y. Jang, and R. Erickson, "Nonlinear-carrier control for high power factor boost rectifiers," Institute of Electrical and Electronic Engineers Applied Power Electronics Conference proceedings, pp. 635-641, Mar. 1995.
R. Zane and D. Maksimovic, "Nonlinear-carrier control for high-power-factor rectifiers based on flyback, Cuk or SEPIC converters," Institute of Electrical and Electronics Engineers Applied Power Electronics Conference proceedings, pp. 814-820, Jul. 1996.
Z. Lai and K.M. Smedley, "Time Quantity One-Cycle Control for Power Factor Correctors," Institue of Electrical and Electronics Engineers Applied Power Electronics Conference proceedings, pp. 821-827, Jul. 1996.
D. Mitchell, "Pulsewidth Modulator Phase Shift," Institute of Electrical & Electronics Engineers Transactions on Aerospace and Electronic Systems, vol. AES-16, No. 3, pp. 272-277, May 1980.
Lai Zheren
Smedley Keyue M.
Mis David
O'Banion John P.
The Regents of the University of California
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