The application of forward converter for wireless charging control of electric bicycle

The rapid development of technology has also been very effective on electric vehicles. However, one of the most studied subjects today is the management of the energy of these vehicles. When electric vehicles are examined, we see that most of them have battery groups. A battery-borne vehicle definitely needs charging, and wireless charging technology is also very necessary for this need. This study, which deals with the requirements of the wireless charging system, mentions the control system and algorithms of the design required for the proper value control of energy. The wireless transmission of energy is based on the principle of inducing energy in the secondary winding by the magnetic flux formed by passing a sinusoidal current through the analyzed primary winding structure under specified conditions. In order for the current to take the sinus form, a resonance structure must be determined and control systems must be developed for the responses of this resonance structure to the system. The control systems in this study designed according to series - series resonance; DC power obtained from the mains to be used in a high frequency inverter includes the high frequency inverter required for the transfer of energy and the battery management required for the use of this energy. The control system of this DC power obtained was managed with the peak current method over a forward converter, which is also very high in terms of efficiency. DC power obtained by forward converter is used in H-Bridge inverter. In order to prevent energy losses in the standby position, a communication algorithm is established in which the peak value of the current at a certain voltage is controlled, based on the response of the series-series resonance structure. When communication takes place according to this algorithm, the forward converter increases the output voltage. The energy induced in the secondary winding by the primary winding approached to a sinus form on the inverter side was rectified and the batteries were charged with a battery management system.