Research And Development On A Novel Power Supply For High-voltage Monitoring

The paper introduced a novel power supply for high-voltage monitoring which has a novel design, simple structure, superior performance; Using coils of the ferrite core as the sending and receiving ends of the electrical energy, using an insulting magnetic material to provide a transmission path for high frequency magnetic field, sending power by high frequency power supply, achieving energy supply from the low voltage side to the high-voltage side. By optimizing the design it has a higher power transmission efficiency, better electromagnetic compatibility and good insulation properties, but also has a good economy, which provides the possibility for the commercial production of the product.Firstly, the paper introduced the basic structure and operating principle of the novel power supply for high-voltage monitoring in detail; Using the principle of electro magnetic induction principle analysis the electromagnetic coupling stmcture of the power supply; Making a simulation by using the electromagnetic analysis software ANSYS.Establishing the circuit model of the impedance of the coil loss, establish the model of an equivalent circuit of the electromagnetic-coupling structure by using transformer theory.Secondly, according to the structure and principles of the novel power supply for high-voltage monitoring, the main factors that affecting energy transmission performance have core losses, the loss of high-frequency coil, the load impedance, the way of compensation, etc. Ordering to improve the performance of the power transmission of the power supply, this paper presents the core losses can be effectively reduced by selecting a suitable core materials and insulating rod material; Core coil loss can be reduced by setting the reasonable Coil position on the core; Putting forward the optimized design for load impedance and the way of compensation.Finally, by building the experimental platform measured transmission efficiency under different frequencies and coil load at different positions on the core; Verified the optimal design about the load and the coil losses.The experimental results show that the optimal design is correct. Detailed the high-frequency power supply circuit and the constant load conversion circuit of the novel power supply for high-voltage monitoring; High-frequency power supply circuit provides high frequency magnetic for the power transmission unit, and the constant load conversion circuit solves the influence of the load to transmission efficiency. In conclusion, by ways of combination of experimental and theoretical the paper verified the feasibility of the new power supply design.