KY Converter and Its Derivatives

• Published in: IEEE transactions on power electronics Vol. 24; no. 1; pp. 128 - 137
• Main Authors: Hwu, K.I., Yau, Y.T.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01-01-2009; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: 1-plus- D converter; 1-plus-2 D converter; 2-plus- D converter; Application software; Applied sciences; Buck converters; Capacitors; Circuit properties; Converters; Convertors; Derivatives; Dielectric, amorphous and glass solid devices; Diodes; Electric potential; Electric, optical and optoelectronic circuits; Electrical engineering. Electrical power engineering; Electrical machines; Electricity; Electronic circuits; Electronics; Exact sciences and technology; Experiments; KY converter; Low voltage; Power electronics, power supplies; Pulse width modulation; Radiofrequency amplifiers; Ripples; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Signal convertors; Sliding mode control; Strategy; Student members; Switches; Synchronous; Transient response; Voltage; voltage-boosting converter; Rectifier effect; Rectification; Transient response; Power converter; Up converter; Electric stress; Control system; 2-plus-D converter; Power capacitor; Power electronics; Experimental study; KY converter; Step down convertor; voltage-boosting converter; Voltage converter; Output voltage; 1-plus-D converter. 1-plus-2D converter; Pulse duration modulation; Learning algorithm
• ISSN: 0885-8993; 1941-0107
• DOI: 10.1109/TPEL.2008.2009178

In this paper, a voltage-boosting converter, named KY converter (i.e., 1-plus- D converter), is presented. Unlike the traditional nonisolated boost converter, this converter possesses fast load transient responses, which is similar to the buck converter with synchronous rectification. In addition, it possesses nonpulsating output current, thereby not only decreasing the current stress on the output capacitor but also reducing the output voltage ripple. Besides, 1-plus-2 D and 2-plus- D converters, derived from the KY converter, are presented based on the same structure but different pulsewidth-modulation control strategies. Above all, the main difference between the KY converter and its derivatives is that the latter ones possess higher output voltages than the former one under the same duty cycle. A detailed description of the KY converter and its derivatives is presented along with some simulated and experimental results.