Abstract
A self-tuning controller for power transfer regulation in inductive power transfer (IPT) systems is proposed in this paper. The controller enables power transfer regulation around a user-defined reference power level. The converter's efficiency is improved by constantly tuning the switching operations to the resonant current, thereby achieving the soft-switching operations reducing electromagnetic interference in the power converters. The self-tuning capability makes it ideal for dynamic IPT systems with uncertain loads and fluctuating resonance frequency. High operating frequencies can be achieved using the simplified digital circuit design for the controller, proposed in this paper, which delivers a low total propagation delay. Bidirectional power transfer can be enabled by using the proposed controller on both transmitter and receiver sides. In the reverse power flow mode, the primary converter operates as a rectifier and the power transfer is controlled through the secondary converter using the proposed controller. The performance of the proposed controller is analyzed using MATLAB/Simulink and the results are presented. Finally, the proposed controller is implemented experimentally and its performance is evaluated as a case study on an IPT system. The experimental and simulation results conform to each other, and show that the proposed converter can effectively regulate the power transfer with an improved efficiency.
| Original language | English |
|---|---|
| Pages (from-to) | 1773-1783 |
| Number of pages | 11 |
| Journal | IEEE Transactions on Industry Applications |
| Volume | 54 |
| Issue number | 2 |
| DOIs | |
| State | Published - Mar 1 2018 |
| Externally published | Yes |
Funding
Manuscript received February 15, 2017; revised May 6, 2017, July 18, 2017, and September 26, 2017; accepted November 6, 2017. Date of publication December 3, 2017; date of current version March 19, 2018. Paper 2017-IACC-0045.R3, presented at the 2016 IEEE International Conference on Power Electronics, Drives, and Energy Systems, Trivandrum, India, Dec. 14–17, and approved for publication in the IEEE TRANSACTIONS ON INDUSTRY APPLICA-TIONS by the Industrial Automation and Control Committee of the IEEE Industry Applications Society. This work was supported by the National Science Foundation under Grant 1553494. (Corresponding author: Arif I. Sarwat.) The authors are with the Department of Electrical and Computer Engineering, Florida International University, Miami FL 33174 USA (e-mail: [email protected]; [email protected]; [email protected]).
| Funders | Funder number |
|---|---|
| National Science Foundation | 1553494 |
Keywords
- Inductive power transfer (IPT)
- power control
- self-tuning control
- soft switching