A Three-Phase to Single-Phase Midpoint Matrix Converter Using a Free-wheeling Switch for an Inductive Power Transfer System
URL
Journal Title
Journal ISSN
Volume Title
School of Electrical Engineering |
Doctoral thesis (article-based)
| Defence date: 2021-08-17
Unless otherwise stated, all rights belong to the author. You may download, display and print this publication for Your own personal use. Commercial use is prohibited.
Authors
Date
2021
Major/Subject
Mcode
Degree programme
Language
en
Pages
94 + app. 66
Series
Aalto University publication series DOCTORAL DISSERTATIONS, 99/2021
Abstract
Inductive power transfer (IPT) systems can improve the practicalities of a power delivery circuit. The contactless structure of IPT reduces the risk of sparking and electric shock, as well as provides good mobility for the IPT recipient during power transfer. Furthermore, the absence of moving parts on the transmitter and receiver circuits increases system reliability. The complexity of an IPT system that is connected to a three-phase voltage source can be reduced by utilizing a direct converter, such as a three-phase to single-phase Midpoint Matrix Converter using a Free-wheeling Switch (MMCFS). Additionally, the series-none compensation can also be applied in a high quality and coupling factors configuration. This dissertation explores the application of the MMCFS in a self-oscillating, series-none IPT system. Two types of pulse-density modulation were proposed to run the converter: Non-successive Injection Modulation (NIM) and Successive Injection Modulation (SIM). Theoretical equations were formulated to estimate the characteristics of the MMCFS-based IPT (MMCFS-IPT) system. In addition, simulation models were created in PLECS to predict the IPT behavior in an ideal case. To validate the equations and the simulations, an experimental setup was designed and built for unidirectional power transfer. The setup consisted of programmable three-phase input voltage, the MMCFS, a primary compensation capacitor, a coupled inductor, a rectifier, and a resistive load. The converter used a field-programmable gate array to control a network of insulated-gate bipolar transistors. Experimental data were measured using a RCL meter, multimeters, oscilloscopes, and a thermal camera for further analysis. In the case of unidirectional power transfer, SIM could produce three times the maximum output power compared to NIM using the same input voltage characteristics. Additionally, the current damping ratio, transfer efficiency and voltage gain depend on the series-none IPT coupling factor (k). The simulation results also confirmed that the proposed converter is capable of performing bi-directional power transfer using the series-series IPT configuration. In practice, applying NIM to MMCFS-IPT enables the converter to deliver as much power as 142 W to the resistive load based on a three-phase input amplitude of 70.8 Vrms. Power transfer can also be regulated through an on-off control system. The MMCFS-IPT prototype achieves an overall efficiency of around 80% based on a k of 0.53. The experimental results are in close agreement with both theoretical calculations and simulation results. This research demonstrates that MMCFS can be used as an alternative to the rectifier-inverter topology in an IPT system in order to reduce system complexity, size and cost.Description
Defence is held on 17.8.2021 12:15 – 16:15
Zoom link: https://aalto.zoom.us/j/67688787557
Supervising professor
Kyyrä, Jorma, Prof., Aalto University, Department of Electrical Engineering and Automation Electrical Engineering, FinlandKeywords
AC/AC converter, bi-directional power transfer, dynamic hysteresis comparator, inductive power transfer, matrix converter, on-off control, pulse-density modulation, wireless power transfer
Other note
Parts
-
[Publication 1]: Ferdi Perdana Kusumah and Jorma Kyyrä. Minimizing Coil Power Loss in A Direct AC/AC Converter-Based Contactless Electric Vehicle Charger. In 2017 19th European Conference on Power Electronics and Applications (EPE’17 ECCE Europe), 10 pages, Warsaw, Poland, Sep. 2017.
Full text in Acris/Aaltodoc: http://urn.fi/URN:NBN:fi:aalto-202104206138DOI: 10.23919/EPE17ECCEEurope.2017.8099168 View at publisher
-
[Publication 2]: Ferdi Perdana Kusumah and Jorma Kyyrä. A Zero-Crossing Approximation of a Distorted Sinusoidal Signal Using Analog Circuit. In 43rd Annual Conference of the IEEE Industrial Electronics Society (IECON 2017), 6 pages, Beijing, China, Oct. 2017.
Full text in Acris/Aaltodoc: http://urn.fi/URN:NBN:fi:aalto-201812216643DOI: 10.1109/IECON.2017.8216127 View at publisher
-
[Publication 3]: Ferdi Perdana Kusumah and Jorma Kyyrä. Initial Current Injection Method of A Direct Three-Phase to Single-Phase AC/AC Converter for Inductive Charger. In 2018 International Power Electronics Conference (IPEC-Niigata 2018 ECCE Asia), 7 pages, Niigata, Japan, May 2018.
Full text in Acris/Aaltodoc: http://urn.fi/URN:NBN:fi:aalto-201909035133DOI: 10.23919/IPEC.2018.8507417 View at publisher
-
[Publication 4]: Ferdi Perdana Kusumah and Jorma Kyyrä. Bi-directional Power Transfer of a Contactless Electric Vehicle Charger Using Direct Three-Phase to Single-Phase AC/AC Converter. In 2018 20th European Conference on Power Electronics and Applications (EPE’18 ECCE Europe), 10 pages, Riga, Latvia, Sep. 2018.
Full text in Acris/Aaltodoc: http://urn.fi/URN:NBN:fi:aalto-201909035120
-
[Publication 5]: Ferdi Perdana Kusumah and Jorma Kyyrä. Successive injections modulation of a direct three-phase to single-phase AC/AC converter for a contactless electric vehicle charger. The Journal of Engineering, Volume 2019, Issue 17, pp. 4106-4110, Jan. 2019.
Full text in Acris/Aaltodoc: http://urn.fi/URN:NBN:fi:aalto-201909035183DOI: 10.1049/joe.2018.8076 View at publisher
- [Publication 6]: Ferdi Perdana Kusumah, Jorma Kyyrä and Wilmar Martinez. A Self-Oscillating Series-None Inductive Power Transfer System Using A Matrix Converter. Submitted to IEEE Transaction on Power Electronics, 10 pages, April 2021.