Switching Frequency Analysis of Dynamically Detuned ICPT Power Pick-ups
- 1 October 2006
- conference paper
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
Dynamic detuning methods have been used in inductive contactless power transfer (ICPT) systems for power flow control. However, the highly variable switching frequency involved in the detuning operation will contribute to electromagnetic interference (EMI) and power losses. It is difficult to determine the detuning frequency precisely due to nonlinear features of power pick-ups. Uncertainty in the operating frequency can result in difficulties in designing filters with suitable bandwidths and choosing suitable switching devices. Based on detailed analytical analysis in four segments of the detuning process, a numerical method is developed in this paper to determine the boundaries of the switching frequencies. An iterative algorithm is presented using a flow chart to illustrate the process taken in the numerical analysis. Simulation and practical experiments are conducted to verify the algorithm so as to ensure the calculated results are sufficiently accurate for designing EMI filters and choosing suitable switching devices.Keywords
This publication has 6 references indexed in Scilit:
- Improved Power Flow Control for Contactless Moving Sensor ApplicationsIEEE Power Electronics Letters, 2004
- A New Contactless Power-Signal Transmission Device for Implanted Functional Electrical Stimulation (FES)IEEE Transactions on Magnetics, 2004
- DC analysis technique for inductive power transfer pick-upsIEEE Power Electronics Letters, 2003
- A dynamically on-off controlled resonant converter designed for coalmining battery charging applicationsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Magnetically coupled systems for power transfer to electric vehiclesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Contactless power and information transmissionIEEE Transactions on Industry Applications, 2002