Abstract
Inductive power transfer (IPT) converters are resonant converters that attain optimal energy efficiencies for a certain load range. To achieve maximum efficiency, it is common to cascade the IPT converter with front-side and load-side dc/dc converters. The two dc/dc converters are normally controlled cooperatively for the requirements of output regulation and maximum efficiency tracking using a control technique based on perturbation and observation, which is inevitably slow in response. In this paper, a decoupled control technique is developed. The load-side dc/dc converter is solely responsible for output regulation, while the front-side converter is responsible for impedance-matching of the IPT converter by controlling its input-to-output voltage ratio. The controls are linear and therefore fast. DC and small-signal transfer functions are derived for designing the control parameters. The performances of fast regulation and high efficiency of the IPT converter system are verified using a prototype system.
| Original language | English |
|---|---|
| Article number | 7971993 |
| Pages (from-to) | 4523-4534 |
| Journal | IEEE Transactions on Power Electronics |
| Volume | 33 |
| Issue number | 5 |
| Online published | 7 Jul 2017 |
| DOIs | |
| Publication status | Published - May 2018 |
| Externally published | Yes |
Research Keywords
- Control for maximum efficiency
- Inductive power transfer (IPT)
- Wireless power transfer
