The Experts below are selected from a list of 1230 Experts worldwide ranked by ideXlab platform
Kazuki Iwaya - One of the best experts on this subject based on the ideXlab platform.
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High Efficiency Isolated DC/DC Converter Using Series Voltage Compensation
Ieej Transactions on Industry Applications, 2020Co-Authors: Shoichi Miyawaki, Jun-ichi Itoh, Kazuki IwayaAbstract:A new circuit topology is proposed for a high efficiency isolated buck-boost DC/DC Converter. The proposed Converter consists of a high efficiency resonance half-bridge Converter and a Series Converter. The proposed circuit regulates the voltage output by the Series Converter, which provides only the differential voltage between the input voltage and output voltage. Therefore, the circuit achieves high efficiency when the input voltage is close to the output voltage, because only the resonance Converter operates. The validity of the proposed circuit was confirmed by experiment and loss analysis, with a maximum efficiency of 95.8%.
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Experimental investigation and loss calculation for a bi-directional isolated DC/DC Converter using Series voltage compensation
2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC), 2013Co-Authors: Shoichi Miyawaki, Jun-ichi Itoh, Kazuki IwayaAbstract:This paper discusses for a bi-directional isolated DC/DC Converter using Series voltage compensation. The proposed Converter consists of a high efficiency resonance full-bridge Converter and a Series Converter. The proposed circuit regulates the output voltage by using the Series Converter, which provides only the differential voltage between the input voltage and the output voltage that is closed to the nominal voltage, since only the resonance Converter will operate. In this paper, four types of the auxiliary circuits are investigated using the loss calculation. The relationship between the loss element and efficiency characteristics is clarified. The validity of the proposed circuit was confirmed by experimental results, which converts 48-V to 380-V at 1kW, with a maximum efficiency of 95% at 1 kW at the nominal input voltage region.
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A high‐efficiency isolated DC/DC Converter using Series connection on the secondary side
Electrical Engineering in Japan, 2012Co-Authors: Shoichi Miyawaki, Jun-ichi Itoh, Kazuki IwayaAbstract:This paper proposes a new circuit topology for a high-efficiency isolated DC/DC Converter using Series compensation. The proposed Converter consists of a high-efficiency resonance half-bridge Converter and a Series Converter. The Series Converter regulates the output voltage and provides only the differential voltage between the input voltage and output voltage. Therefore, the circuit achieves high efficiency when the input voltage is almost equal to the output voltage, because then only the resonance Converter will operate. In this paper, the approach employed to achieve high efficiency by using the proposed Series compensation method is introduced. In addition, the fundamental operation and the method of designing the proposed circuit are described. The suitability of the proposed circuit was confirmed by performing experiment and loss analysis, and the maximum efficiency achieved was 96.2%. © 2012 Wiley Periodicals, Inc. Electr Eng Jpn, 182(2): 42–52, 2013; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.22330
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Comparing investigation for a bi-directional isolated DC/DC Converter using Series voltage compensation
2012 Twenty-Seventh Annual IEEE Applied Power Electronics Conference and Exposition (APEC), 2012Co-Authors: Shoichi Miyawaki, Jun-ichi Itoh, Kazuki IwayaAbstract:This paper discusses a bi-directional isolated DC/DC Converter using Series compensation method. The proposed Converter consists of a high efficiency resonance full-bridge Converter and a Series Converter. This proposed circuit regulates the output voltage by the Series Converter, which provides only the differential voltage between the input voltage and the output voltage, which is closed to the nominal voltage. In this paper, four types of the auxiliary circuits are investigated in term of loss. The relationship between the loss element and efficiency characteristics is clarified. The validity of the proposed circuit is confirmed by the loss calculation, with a maximum efficiency of over 94% at 2kW. Moreover, the experimental results confirmed that the proposed circuit, which converts 48-V to 380-V at 1kW, achieves the maximum efficiency of 93.0% at the nominal input voltage region.
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A high efficiency isolated DC/DC Converter using Series connection on secondary side
The 2010 International Power Electronics Conference - ECCE ASIA -, 2010Co-Authors: Shoichi Miyawaki, Jun-ichi Itoh, Kazuki IwayaAbstract:This paper proposes a new circuit topology for a high efficiency isolated buck-boost DC/DC Converter. The proposed Converter consists of a high efficiency resonance half-bridge Converter and a Series Converter. This proposed circuit regulates the output voltage by the Series Converter, which provides only the differential voltage between the input voltage and the output voltage. Therefore, the circuit achieves high efficiency when the input voltage is closed to the nominal input voltage, since only the resonance Converter will operate. Experimental results are shown in order to demonstrate the advantages of the proposed Converters in comparison with a conventional Converter. The experimental results confirmed that the proposed circuit, which converts 48 V input to 12 V, achieves 94.0% maximum efficiency point at the nominal input voltage region.
Shoichi Miyawaki - One of the best experts on this subject based on the ideXlab platform.
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High Efficiency Isolated DC/DC Converter Using Series Voltage Compensation
Ieej Transactions on Industry Applications, 2020Co-Authors: Shoichi Miyawaki, Jun-ichi Itoh, Kazuki IwayaAbstract:A new circuit topology is proposed for a high efficiency isolated buck-boost DC/DC Converter. The proposed Converter consists of a high efficiency resonance half-bridge Converter and a Series Converter. The proposed circuit regulates the voltage output by the Series Converter, which provides only the differential voltage between the input voltage and output voltage. Therefore, the circuit achieves high efficiency when the input voltage is close to the output voltage, because only the resonance Converter operates. The validity of the proposed circuit was confirmed by experiment and loss analysis, with a maximum efficiency of 95.8%.
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Experimental investigation and loss calculation for a bi-directional isolated DC/DC Converter using Series voltage compensation
2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC), 2013Co-Authors: Shoichi Miyawaki, Jun-ichi Itoh, Kazuki IwayaAbstract:This paper discusses for a bi-directional isolated DC/DC Converter using Series voltage compensation. The proposed Converter consists of a high efficiency resonance full-bridge Converter and a Series Converter. The proposed circuit regulates the output voltage by using the Series Converter, which provides only the differential voltage between the input voltage and the output voltage that is closed to the nominal voltage, since only the resonance Converter will operate. In this paper, four types of the auxiliary circuits are investigated using the loss calculation. The relationship between the loss element and efficiency characteristics is clarified. The validity of the proposed circuit was confirmed by experimental results, which converts 48-V to 380-V at 1kW, with a maximum efficiency of 95% at 1 kW at the nominal input voltage region.
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A high‐efficiency isolated DC/DC Converter using Series connection on the secondary side
Electrical Engineering in Japan, 2012Co-Authors: Shoichi Miyawaki, Jun-ichi Itoh, Kazuki IwayaAbstract:This paper proposes a new circuit topology for a high-efficiency isolated DC/DC Converter using Series compensation. The proposed Converter consists of a high-efficiency resonance half-bridge Converter and a Series Converter. The Series Converter regulates the output voltage and provides only the differential voltage between the input voltage and output voltage. Therefore, the circuit achieves high efficiency when the input voltage is almost equal to the output voltage, because then only the resonance Converter will operate. In this paper, the approach employed to achieve high efficiency by using the proposed Series compensation method is introduced. In addition, the fundamental operation and the method of designing the proposed circuit are described. The suitability of the proposed circuit was confirmed by performing experiment and loss analysis, and the maximum efficiency achieved was 96.2%. © 2012 Wiley Periodicals, Inc. Electr Eng Jpn, 182(2): 42–52, 2013; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.22330
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Comparing investigation for a bi-directional isolated DC/DC Converter using Series voltage compensation
2012 Twenty-Seventh Annual IEEE Applied Power Electronics Conference and Exposition (APEC), 2012Co-Authors: Shoichi Miyawaki, Jun-ichi Itoh, Kazuki IwayaAbstract:This paper discusses a bi-directional isolated DC/DC Converter using Series compensation method. The proposed Converter consists of a high efficiency resonance full-bridge Converter and a Series Converter. This proposed circuit regulates the output voltage by the Series Converter, which provides only the differential voltage between the input voltage and the output voltage, which is closed to the nominal voltage. In this paper, four types of the auxiliary circuits are investigated in term of loss. The relationship between the loss element and efficiency characteristics is clarified. The validity of the proposed circuit is confirmed by the loss calculation, with a maximum efficiency of over 94% at 2kW. Moreover, the experimental results confirmed that the proposed circuit, which converts 48-V to 380-V at 1kW, achieves the maximum efficiency of 93.0% at the nominal input voltage region.
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A high efficiency isolated DC/DC Converter using Series connection on secondary side
The 2010 International Power Electronics Conference - ECCE ASIA -, 2010Co-Authors: Shoichi Miyawaki, Jun-ichi Itoh, Kazuki IwayaAbstract:This paper proposes a new circuit topology for a high efficiency isolated buck-boost DC/DC Converter. The proposed Converter consists of a high efficiency resonance half-bridge Converter and a Series Converter. This proposed circuit regulates the output voltage by the Series Converter, which provides only the differential voltage between the input voltage and the output voltage. Therefore, the circuit achieves high efficiency when the input voltage is closed to the nominal input voltage, since only the resonance Converter will operate. Experimental results are shown in order to demonstrate the advantages of the proposed Converters in comparison with a conventional Converter. The experimental results confirmed that the proposed circuit, which converts 48 V input to 12 V, achieves 94.0% maximum efficiency point at the nominal input voltage region.
Jun-ichi Itoh - One of the best experts on this subject based on the ideXlab platform.
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High Efficiency Isolated DC/DC Converter Using Series Voltage Compensation
Ieej Transactions on Industry Applications, 2020Co-Authors: Shoichi Miyawaki, Jun-ichi Itoh, Kazuki IwayaAbstract:A new circuit topology is proposed for a high efficiency isolated buck-boost DC/DC Converter. The proposed Converter consists of a high efficiency resonance half-bridge Converter and a Series Converter. The proposed circuit regulates the voltage output by the Series Converter, which provides only the differential voltage between the input voltage and output voltage. Therefore, the circuit achieves high efficiency when the input voltage is close to the output voltage, because only the resonance Converter operates. The validity of the proposed circuit was confirmed by experiment and loss analysis, with a maximum efficiency of 95.8%.
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Experimental investigation and loss calculation for a bi-directional isolated DC/DC Converter using Series voltage compensation
2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC), 2013Co-Authors: Shoichi Miyawaki, Jun-ichi Itoh, Kazuki IwayaAbstract:This paper discusses for a bi-directional isolated DC/DC Converter using Series voltage compensation. The proposed Converter consists of a high efficiency resonance full-bridge Converter and a Series Converter. The proposed circuit regulates the output voltage by using the Series Converter, which provides only the differential voltage between the input voltage and the output voltage that is closed to the nominal voltage, since only the resonance Converter will operate. In this paper, four types of the auxiliary circuits are investigated using the loss calculation. The relationship between the loss element and efficiency characteristics is clarified. The validity of the proposed circuit was confirmed by experimental results, which converts 48-V to 380-V at 1kW, with a maximum efficiency of 95% at 1 kW at the nominal input voltage region.
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A high‐efficiency isolated DC/DC Converter using Series connection on the secondary side
Electrical Engineering in Japan, 2012Co-Authors: Shoichi Miyawaki, Jun-ichi Itoh, Kazuki IwayaAbstract:This paper proposes a new circuit topology for a high-efficiency isolated DC/DC Converter using Series compensation. The proposed Converter consists of a high-efficiency resonance half-bridge Converter and a Series Converter. The Series Converter regulates the output voltage and provides only the differential voltage between the input voltage and output voltage. Therefore, the circuit achieves high efficiency when the input voltage is almost equal to the output voltage, because then only the resonance Converter will operate. In this paper, the approach employed to achieve high efficiency by using the proposed Series compensation method is introduced. In addition, the fundamental operation and the method of designing the proposed circuit are described. The suitability of the proposed circuit was confirmed by performing experiment and loss analysis, and the maximum efficiency achieved was 96.2%. © 2012 Wiley Periodicals, Inc. Electr Eng Jpn, 182(2): 42–52, 2013; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.22330
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Comparing investigation for a bi-directional isolated DC/DC Converter using Series voltage compensation
2012 Twenty-Seventh Annual IEEE Applied Power Electronics Conference and Exposition (APEC), 2012Co-Authors: Shoichi Miyawaki, Jun-ichi Itoh, Kazuki IwayaAbstract:This paper discusses a bi-directional isolated DC/DC Converter using Series compensation method. The proposed Converter consists of a high efficiency resonance full-bridge Converter and a Series Converter. This proposed circuit regulates the output voltage by the Series Converter, which provides only the differential voltage between the input voltage and the output voltage, which is closed to the nominal voltage. In this paper, four types of the auxiliary circuits are investigated in term of loss. The relationship between the loss element and efficiency characteristics is clarified. The validity of the proposed circuit is confirmed by the loss calculation, with a maximum efficiency of over 94% at 2kW. Moreover, the experimental results confirmed that the proposed circuit, which converts 48-V to 380-V at 1kW, achieves the maximum efficiency of 93.0% at the nominal input voltage region.
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A high efficiency isolated DC/DC Converter using Series connection on secondary side
The 2010 International Power Electronics Conference - ECCE ASIA -, 2010Co-Authors: Shoichi Miyawaki, Jun-ichi Itoh, Kazuki IwayaAbstract:This paper proposes a new circuit topology for a high efficiency isolated buck-boost DC/DC Converter. The proposed Converter consists of a high efficiency resonance half-bridge Converter and a Series Converter. This proposed circuit regulates the output voltage by the Series Converter, which provides only the differential voltage between the input voltage and the output voltage. Therefore, the circuit achieves high efficiency when the input voltage is closed to the nominal input voltage, since only the resonance Converter will operate. Experimental results are shown in order to demonstrate the advantages of the proposed Converters in comparison with a conventional Converter. The experimental results confirmed that the proposed circuit, which converts 48 V input to 12 V, achieves 94.0% maximum efficiency point at the nominal input voltage region.
Vladimir A. Katic - One of the best experts on this subject based on the ideXlab platform.
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Permanent Magnet Synchronous Generator Cascade for Wind Turbine Application
IEEE Transactions on Power Electronics, 2008Co-Authors: Stevan Grabic, Nikola Celanovic, Vladimir A. KaticAbstract:This paper proposes an energy conversion system for a wind turbine comprising a grid connected permanent magnet synchronous generator and a 20% rated Series Converter located in its star point. It models the complete system and focuses on the Series Converter control whose primary function is the active damping of the generator. In addition, this paper addresses the topic of the dc bus voltage control and the dc capacitance sizing of the Series Converter. Finally, it validates the performance of the proposed system by means of system simulation.
Stevan Grabic - One of the best experts on this subject based on the ideXlab platform.
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Permanent Magnet Synchronous Generator Cascade for Wind Turbine Application
IEEE Transactions on Power Electronics, 2008Co-Authors: Stevan Grabic, Nikola Celanovic, Vladimir A. KaticAbstract:This paper proposes an energy conversion system for a wind turbine comprising a grid connected permanent magnet synchronous generator and a 20% rated Series Converter located in its star point. It models the complete system and focuses on the Series Converter control whose primary function is the active damping of the generator. In addition, this paper addresses the topic of the dc bus voltage control and the dc capacitance sizing of the Series Converter. Finally, it validates the performance of the proposed system by means of system simulation.
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Series Converter stabilized wind turbine with permanent magnet synchronous generator
2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551), 2004Co-Authors: Stevan Grabic, Nikola Celanovic, V. KatieAbstract:This paper investigates the use of a Series connected Converter to solve the instability of a grid connected wind turbine with permanent magnet synchronous generator. Using simplified models and mechanical analogies it first introduces the solution of the control problem and then discusses some of its limitations.
