TY - JOUR
T1 - A 2.5 MHz High-Frequency Output Inverter Based on Frequency Multiplying Technique with a Multi-Core Transformer using Mn-Zn Ferrite Materials
AU - Orikawa, Koji
AU - Ogasawara, Satoshi
AU - Takemoto, Masatsugu
AU - Itoh, Jun Ichi
N1 - Funding Information:
This paper proposed the 2.5 MHz high-frequency output inverter based on the frequency multiplying technique with the multi-core transformer using Mn-Zn ferrite materials with the upper limit of operation frequency which is lower than the output frequency of 2.5 MHz. First, the operation principle of the proposed circuit was explained. The flux caused by the load current is not generated in the magnetic core because the flux caused by the load current is cancelled by the current which flows through the primary winding in addition to the magnetizing current. Therefore, the iron loss caused by the output frequency is not theoretically generated. Next, the difficulty of using Mn-Zn for transformers at 2.5 MHz was discussed from the viewpoint of the frequency characteristics of permeability and iron loss per volume. Then, the fundamental operation of the proposed circuit using Mn-Zn ferrite was experimentally verified at the output frequency of 2.5 MHz by the experiment of the continuous operation. As a result, it is experimentally proved that the proposed circuit can overcome the difficulty of using Mn-Zn for transformers in high-frequency output inverter at the frequency of 2.5 MHz. Acknowledgment This work was supported by JSPS Grant-in-Aid for Young Scientists (B) Grant Number JP17K14635.
Publisher Copyright:
© 2021 Institute of Electrical Engineers of Japan. All rights reserved.
PY - 2021/5
Y1 - 2021/5
N2 - This paper proposes a 2.5 MHz high-frequency output inverter based on a frequency multiplying technique with a multi-core transformer using Mn-Zn ferrite materials. The upper limit of the operation frequency for these materials is lower than the output frequency of 2.5 MHz. First, the operation principle of the proposed circuit is explained. Second, a difficulty of using Mn-Zn for transformers at the frequency of 2.5 MHz is discussed. Third, a numerical analysis shows that the proposed circuit can output the frequency over the upper limit of the operation frequency of Mn-Zn ferrite. Finally, through continuous operation, where the proposed circuit outputs approximately 650 W, it is experimentally continued that Mn-Zn ferrite can be used without large iron loss at the output frequency of 2.5 MHz. Thus, the proposed circuit can overcome the difficulty of using Mn-Zn for transformers at the frequency of 2.5 MHz.
AB - This paper proposes a 2.5 MHz high-frequency output inverter based on a frequency multiplying technique with a multi-core transformer using Mn-Zn ferrite materials. The upper limit of the operation frequency for these materials is lower than the output frequency of 2.5 MHz. First, the operation principle of the proposed circuit is explained. Second, a difficulty of using Mn-Zn for transformers at the frequency of 2.5 MHz is discussed. Third, a numerical analysis shows that the proposed circuit can output the frequency over the upper limit of the operation frequency of Mn-Zn ferrite. Finally, through continuous operation, where the proposed circuit outputs approximately 650 W, it is experimentally continued that Mn-Zn ferrite can be used without large iron loss at the output frequency of 2.5 MHz. Thus, the proposed circuit can overcome the difficulty of using Mn-Zn for transformers at the frequency of 2.5 MHz.
KW - Frequency multiplying
KW - High-frequency output inverter
KW - Iron loss
KW - Mn-zn ferrite
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U2 - 10.1541/IEEJJIA.20010411
DO - 10.1541/IEEJJIA.20010411
M3 - Article
AN - SCOPUS:85106514111
VL - 10
SP - 370
EP - 376
JO - IEEJ Journal of Industry Applications
JF - IEEJ Journal of Industry Applications
SN - 2187-1094
IS - 3
ER -