A Novel Efficiency-oriented Frequency Tracking Method for WPT Systems
| Autor: | Jianwei Mai, Yijie Wang, Dianguo Xu, Haisong Cheng, Lei Wang, Kaixing Lu, Longlong Zhang, Yousu Yao |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Computer science 020208 electrical & electronic engineering 02 engineering and technology Input impedance Signal edge 01 natural sciences law.invention Power (physics) Capacitor law Control theory 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Inverter Maximum power transfer theorem Wireless power transfer Electrical impedance |
| Zdroj: | 2019 22nd International Conference on Electrical Machines and Systems (ICEMS). |
| DOI: | 10.1109/icems.2019.8921703 |
| Popis: | The deviation from resonant conditions in wireless power transfer (WPT) systems caused by variations of compensation parameters will result in reduced power transfer efficiency and deteriorated output characteristics. To handle with these problems, the time difference between the rising edge of the driving signal and the zero-crossing point of the primary current is detected. The phase angle of the input impedance is obtained, which works as the feedback parameter to control the switching frequency of the inverter. The proposed WPT systems always operate under resonant conditions. Hence, the output power and efficiency are improved, and zero-voltage switching is achieved under all load conditions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|