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The analysis on design and implementation of a non-contact charging system is carried out for a smart phones application. This design is basically on half-bridge LLC resonant converter that consist of Pulse Width Modulation, gate driver and receiver circuits. TL494 and IR2110 integrated circuits were used for control of the signals as the duty cycl...
Context in source publication
Context 1
... first module to be constructed is the Pulse Width Modulation circuit as shown in figure 3, this is done by first placed the integrated circuit (TL494) on the breadboard followed by connecting the wires one going to grounds and Vcc, other passive components such as resistors and capacitor after which there values are known respectively. After all the connections, this module is tested and the result obtained in term of voltage and waveform on Pin 5, 9 and 10 of the chip is been reported on the later part of this report. ...
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This paper presents the operation, analysis, design, simulation, and experimental results for a proposed Dual-Transformer DC-DC Resonant Converter (DTRC). A three-arm bridge is employed on the input side and an H-type bridge is employed on the output side of the DTRC, and the two bridges are connected with two high-frequency (HF) transformers. By o...
Citations
... The timing parameters RT and CT are selected to generate the required switching frequency. [24], [25] This circuit approximate switching frequency can be calculated using (1) ...
Induction heating is extensively utilized in various
applications such as melting, metal forming, and heat treating.
To facilitate high-frequency (HF) induction heating, a power
electronic inverter has been specifically designed. This paper
focuses on the development of a series resonant circuit for metal
forming purposes. The series resonant circuit is designed with
three different switching frequency cases. The paper also
presents simulations of the HF inverter design, modeling, and
control circuits. In recent times, there has been a growing
interest in domestic-level induction heating processes due to
their clean, reliable, flexible, and fast operation. To regulate the
output power, a simplified pulse width modulation (PWM)
switching control method was employed. The maximum output
power is achieved when the switching frequency matches the
resonance frequency, as there are no switching losses compared
to frequencies higher or lower than the resonance frequency. In
this case, the power and efficiency achieved are 1014W and
92.4%, respectively. Therefore, it is crucial for the switching
frequency to align with the resonance frequency in order to
obtain optimal results. This study effectively demonstrates the
proposed system's effectiveness for metal treatment induction
heating systems.
