Title :
Performance, design and pulse width control of a CLL resonant DC/DC converter operating at constant frequency in the lagging power factor mode
Author :
Chakraborty, Chandan ; Ishida, Muneaki ; Hori, Takamasa
Author_Institution :
Dept. of Electr. & Electron. Eng., Mie Univ., Tsu, Japan
Abstract :
One of the different available topologies of the CLL resonant power converter has been re-investigated in this paper in the lagging power factor mode. It has been shown that the converter has a load-independent feature and may be designed to operate (ideally) at constant frequency. However, because of the nonidealities of the power converter components and to compensate for the variation in input DC voltage, frequency and/or PWM control is required. Optimization issues of the transformer-coupled topologies have also been discussed. A design procedure has been chalked out considering a voltage regulator-type application. Experimental results from a prototype power converter confirm the analysis. Pulse width control of the inverter output voltage shows very smooth control in converter output voltage to operate at constant frequency, despite changes in input voltage and/or output load
Keywords :
DC-DC power convertors; PWM power convertors; control system synthesis; optimal control; resonant power convertors; voltage control; CLL resonant DC/DC power converter; constant frequency operation; design procedure; inverter output voltage control; lagging power factor mode operation; optimization issues; pulse width control; transformer-coupled topologies; voltage regulator-type application; Frequency conversion; Prototypes; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Reactive power; Resonance; Space vector pulse width modulation; Topology; Voltage control;
Conference_Titel :
Power Electronics and Drive Systems, 1999. PEDS '99. Proceedings of the IEEE 1999 International Conference on
Print_ISBN :
0-7803-5769-8
DOI :
10.1109/PEDS.1999.792802
