Új típusú, új zárási technikával ellátott műanyag tégely kutatása, fejlesztése(GINOP_PLUSZ-2.1.1-21-2022-00249)
Támogató: GINOP
Szakterületek:
Vezetéknélküli távközlés, távközlés, nagyfrekvencia, mobil technológia
This paper presents a comprehensive analysis of the dead-time effects in wireless
power transfer systems based on LCC-S topology. In these systems operating at high
frequencies, the ratio of dead-time versus the operating period becomes critical,
and the dead-time issue can cause certain problems regarding power quality, efficiency,
and output voltage ripple. The impact of input quantities such as voltage and switching
frequency on the efficiency and output power of the LCC-S-tuned WPT system was also
investigated. The optimal combination of these parameters used to achieve the maximum
efficiency for a target output power and to set the appropriate value of the dead
time were determined by running multiple simulations using the MATLAB R2023b software
platform. It was also shown that the output voltage remained unchanged with and without
a load and up to 1200 ns of dead-time, which provides a simple implementation of the
corresponding mathematical model. In the recommended interval of 600–1500 ns, the
influence of the dead-time on the value of the output voltage amplitude is less than
10%. The validity of the proposed method was confirmed through the implementation
of the experimental prototype, a 5 kW wireless power transmission system, and the
obtained results were in accordance with the simulation results.
