2020 Fiscal Year Research-status Report
Load-Independent Output Design and Isolation Method for Multiple-Input Multiple-Output Inductive Power Transfer
| Project/Area Number |
20K14736
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| Research Institution | Nara Institute of Science and Technology |
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Principal Investigator |
DUONG QuangThang 奈良先端科学技術大学院大学, 先端科学技術研究科, 助教 (40757811)
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| Project Period (FY) |
2020-04-01 – 2022-03-31
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| Keywords | inductive power transfer / mimo / cross-talk / isolation |
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| Outline of Annual Research Achievements |
In WP1, under the ideal condition of lossless transmission, we have successfully derived a compensation circuit for 2x2 IPT system (IPT system with two transmitters and two receivers). This solution can be implemented only in the receiver-side.
In WP2, we have evaluated the performance of the preliminary solution of WP1 under lossy transmission. We have found that by moving a part of the compensation circuit to the transmitter-side, the impact of lossy elements can be significantly reduced. We have already presented the results of WPs 1 and 2 in two international conferences.
In WP3, we have successfully refined the solution so that it can be applied when partial knowledge on the system parameters is known to each of the transmitter-side and the receiver-side. These results have been reported in the conferences [2], [4]-[8]. All the solutions mentioned above were developed for IPT system using single frequency. We have also developed a modified version of the solution for IPT using two adjacent frequencies and have reported in the conferences [1] and [3].
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
So far, the reported results in WPs 1, 2, 3 are applicable to only a special case of IPT system with two transmitters and two receivers. However, we have theoretically derived the solution for a more general IPT system with M transmitters and N receivers based on these preliminary solutions. Even though the effectiveness of this general solution has not been verified by computer simulation or experiments, it is safe to say that almost all the research purposes of WPs 1, 2, 3 have been achieved in this FY. This research is progressing as planned.
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| Strategy for Future Research Activity |
To develop the outcomes of WPs 1,2,3, we are currently evaluating the general solution for compensation circuit of IPT system with M transmitters and N receivers via extensive computer simulations and experiments. We plan to summarized the results and submit a journal paper for review.
Meanwhile, we will carry out WPs 4 and 5 as scheduled. In WP4, we will evaluate the transferable power improvement effect of MIMO-IPT with the proposed compensation design. In WP5, we will investigate if we can achieve magnetic leakage reduction with MIMO-IPT as a side effect of the proposed compensation design.
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| Causes of Carryover |
The first reason is that the travel expense budget (600,000 JPY) could not be executed due to the covid 19 pandemic. We plan to use this budget for personnel expenditure to enhance the research outcome next FY.
The second reason is that we have changed the plan to purchase some articles for experiments (about 300,000 JYP) to the next FY due to delay in delivery time during the pandemic.
The third reason is that the budget for miscellaneous expenses (mostly journal submission fee) were not executed. Currently, we are preparing the journal papers and plan to use this budget next FY.
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Research Products
(8 results)
