A New Pulse Frequency Waveform Synthesizing Method Using IPT Frequency-Gain Characteristics
Subject Areas : electrical and computer engineeringM. H. Ameri 1 , A. Yazdian Varjani 2 , M. Mohamadian 3
1 - Tarbiat Modares University
2 - Tarbiat Modares University
3 - Tarbiat Modares University
Keywords: IPT pulse frequency modulation single phase converter resonance converter,
Abstract :
The electrical connection between the load and source can be eliminated using inductive power transfer. Supplying AC Loads, such as V2G and single phase motors, is one of the many applications of IPT. To supply an AC load, the rectified output power of IPT should be delivered to an inverter. The sequential dc/ac/dc/ac conversions cause IPT efficiency decreases. To make an output AC voltage with acceptable THD, the carrier frequency of the PWM method should be several times the reference frequency which increases the switching loss. In this paper based on IPT gain-frequency characteristics, a new pulse frequency waveform synthesizing method (PFWS) has been presented. This method eliminates secondary inverter switching losses. It is shown that besides loss reduction, synthesized sinusoidal waveform at secondary of IPT, causes the Total Switching Device Power (TSDP) of secondary converters decrease, therefore their lifetime increase. Simulated and experimental results of the developed laboratory model which verify and illustrate the operation of the proposed method are presented.
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