The Experts below are selected from a list of 76887 Experts worldwide ranked by ideXlab platform
Mikio Murozono - One of the best experts on this subject based on the ideXlab platform.
-
A state-of-the-art compact SiC photovoltaic inverter with maximum power point Tracking Function
2018Co-Authors: Yuji Ando, Takeo Oku, Masashi Yasuda, Kazufumi Ushijima, Hiroshi Matsuo, Mikio MurozonoAbstract:We have developed a 150-W SiC-based photovoltaic (PV)-inverter with the maximum power point Tracking (MPPT) Function. The newly developed inverter achieved a state-of-the-art combination of the weight (0.79 kg) and the volume (790 mm3) as a 150-250 W class PV-inverter. As compared to the original version that we have previously reported, the weight and volume were decreased by 37% and 38%, respectively. This compactness originated from the optimized circuit structure and the increased density of a wiring circuit. Conversion efficiencies of the MPPT charge controller and the direct current (DC)-alternating current (AC) converter reached 96.4% and 87.6%, respectively. These efficiency values are comparable to those for the original version. We have developed a PV power generation system consisting of this inverter, a spherical Si solar cell module, and a 15-V Li-ion laminated battery. The total weight of the system was below 6 kg. The developed system exhibited stable output power characteristics, even when the weather conditions were fluctuated. These compactness, high efficiencies, and excellent stability clearly indicated the feasibility of SiC power devices even for sub-kW class PV power generation systems.We have developed a 150-W SiC-based photovoltaic (PV)-inverter with the maximum power point Tracking (MPPT) Function. The newly developed inverter achieved a state-of-the-art combination of the weight (0.79 kg) and the volume (790 mm3) as a 150-250 W class PV-inverter. As compared to the original version that we have previously reported, the weight and volume were decreased by 37% and 38%, respectively. This compactness originated from the optimized circuit structure and the increased density of a wiring circuit. Conversion efficiencies of the MPPT charge controller and the direct current (DC)-alternating current (AC) converter reached 96.4% and 87.6%, respectively. These efficiency values are comparable to those for the original version. We have developed a PV power generation system consisting of this inverter, a spherical Si solar cell module, and a 15-V Li-ion laminated battery. The total weight of the system was below 6 kg. The developed system exhibited stable output power characteristics, even when...
-
A compact SiC photovoltaic inverter with maximum power point Tracking Function
Solar Energy, 2017Co-Authors: Yuji Ando, Takeo Oku, Masashi Yasuda, Yasuhiro Shirahata, Kazufumi Ushijima, Mikio MurozonoAbstract:A compact 150 W photovoltaic inverter was developed using SiC devices, which integrated a maximum power point Tracking charge controller and a direct current (DC) - alternating current (AC) converter into a single module. The DC-AC converter circuit was built with four SiC metal-oxidesemiconductor field-effect transistors, while the DC-DC converter circuit built with four SiC Schottky barrier diodes. An increase of the switching frequency led to the module of a reduced size (250 × 180 × 28 mm3), which is just one third volume of a commercial Si-based inverter available today. Besides being compact, the conversion efficiency of the DC-AC converter was approximately 3% higher than that of the commercial Si-based inverter. In addition, the MPPT controller showed a conversion efficiency exceeding 96%, which raised the total efficiency under practical operation conditions up to 86%.
Yuji Ando - One of the best experts on this subject based on the ideXlab platform.
-
A state-of-the-art compact SiC photovoltaic inverter with maximum power point Tracking Function
2018Co-Authors: Yuji Ando, Takeo Oku, Masashi Yasuda, Kazufumi Ushijima, Hiroshi Matsuo, Mikio MurozonoAbstract:We have developed a 150-W SiC-based photovoltaic (PV)-inverter with the maximum power point Tracking (MPPT) Function. The newly developed inverter achieved a state-of-the-art combination of the weight (0.79 kg) and the volume (790 mm3) as a 150-250 W class PV-inverter. As compared to the original version that we have previously reported, the weight and volume were decreased by 37% and 38%, respectively. This compactness originated from the optimized circuit structure and the increased density of a wiring circuit. Conversion efficiencies of the MPPT charge controller and the direct current (DC)-alternating current (AC) converter reached 96.4% and 87.6%, respectively. These efficiency values are comparable to those for the original version. We have developed a PV power generation system consisting of this inverter, a spherical Si solar cell module, and a 15-V Li-ion laminated battery. The total weight of the system was below 6 kg. The developed system exhibited stable output power characteristics, even when the weather conditions were fluctuated. These compactness, high efficiencies, and excellent stability clearly indicated the feasibility of SiC power devices even for sub-kW class PV power generation systems.We have developed a 150-W SiC-based photovoltaic (PV)-inverter with the maximum power point Tracking (MPPT) Function. The newly developed inverter achieved a state-of-the-art combination of the weight (0.79 kg) and the volume (790 mm3) as a 150-250 W class PV-inverter. As compared to the original version that we have previously reported, the weight and volume were decreased by 37% and 38%, respectively. This compactness originated from the optimized circuit structure and the increased density of a wiring circuit. Conversion efficiencies of the MPPT charge controller and the direct current (DC)-alternating current (AC) converter reached 96.4% and 87.6%, respectively. These efficiency values are comparable to those for the original version. We have developed a PV power generation system consisting of this inverter, a spherical Si solar cell module, and a 15-V Li-ion laminated battery. The total weight of the system was below 6 kg. The developed system exhibited stable output power characteristics, even when...
-
A compact SiC photovoltaic inverter with maximum power point Tracking Function
Solar Energy, 2017Co-Authors: Yuji Ando, Takeo Oku, Masashi Yasuda, Yasuhiro Shirahata, Kazufumi Ushijima, Mikio MurozonoAbstract:A compact 150 W photovoltaic inverter was developed using SiC devices, which integrated a maximum power point Tracking charge controller and a direct current (DC) - alternating current (AC) converter into a single module. The DC-AC converter circuit was built with four SiC metal-oxidesemiconductor field-effect transistors, while the DC-DC converter circuit built with four SiC Schottky barrier diodes. An increase of the switching frequency led to the module of a reduced size (250 × 180 × 28 mm3), which is just one third volume of a commercial Si-based inverter available today. Besides being compact, the conversion efficiency of the DC-AC converter was approximately 3% higher than that of the commercial Si-based inverter. In addition, the MPPT controller showed a conversion efficiency exceeding 96%, which raised the total efficiency under practical operation conditions up to 86%.
Mochimitsu Komori - One of the best experts on this subject based on the ideXlab platform.
-
ICHIT (2) - FPGA Implementation of Image Processing for Real-Time Robot Vision System
Convergence and Hybrid Information Technology, 2011Co-Authors: Hayato Hagiwara, Kenichi Asami, Mochimitsu KomoriAbstract:This paper presents a real-time robot vision system integrating adequate image processing and pan-tilt motion control which is implemented by FPGA reconfigurable logic device. The digital image processing acquired by CMOS image sensor is performed on the embedded FPGA board and Linux real-time video communication module. The integrated robot vision system aims to achieve a suitable platform available from both hardware and software. In addition, we also present spatial recognition by edge detection and Tracking Function of moving objects by determining color which are necessary for autonomous mobile robots.
-
fpga implementation of image processing for real time robot vision system
International Conference on Hybrid Information Technology, 2011Co-Authors: Hayato Hagiwara, Kenichi Asami, Mochimitsu KomoriAbstract:This paper presents a real-time robot vision system integrating adequate image processing and pan-tilt motion control which is implemented by FPGA reconfigurable logic device. The digital image processing acquired by CMOS image sensor is performed on the embedded FPGA board and Linux real-time video communication module. The integrated robot vision system aims to achieve a suitable platform available from both hardware and software. In addition, we also present spatial recognition by edge detection and Tracking Function of moving objects by determining color which are necessary for autonomous mobile robots.
Kazufumi Ushijima - One of the best experts on this subject based on the ideXlab platform.
-
A state-of-the-art compact SiC photovoltaic inverter with maximum power point Tracking Function
2018Co-Authors: Yuji Ando, Takeo Oku, Masashi Yasuda, Kazufumi Ushijima, Hiroshi Matsuo, Mikio MurozonoAbstract:We have developed a 150-W SiC-based photovoltaic (PV)-inverter with the maximum power point Tracking (MPPT) Function. The newly developed inverter achieved a state-of-the-art combination of the weight (0.79 kg) and the volume (790 mm3) as a 150-250 W class PV-inverter. As compared to the original version that we have previously reported, the weight and volume were decreased by 37% and 38%, respectively. This compactness originated from the optimized circuit structure and the increased density of a wiring circuit. Conversion efficiencies of the MPPT charge controller and the direct current (DC)-alternating current (AC) converter reached 96.4% and 87.6%, respectively. These efficiency values are comparable to those for the original version. We have developed a PV power generation system consisting of this inverter, a spherical Si solar cell module, and a 15-V Li-ion laminated battery. The total weight of the system was below 6 kg. The developed system exhibited stable output power characteristics, even when the weather conditions were fluctuated. These compactness, high efficiencies, and excellent stability clearly indicated the feasibility of SiC power devices even for sub-kW class PV power generation systems.We have developed a 150-W SiC-based photovoltaic (PV)-inverter with the maximum power point Tracking (MPPT) Function. The newly developed inverter achieved a state-of-the-art combination of the weight (0.79 kg) and the volume (790 mm3) as a 150-250 W class PV-inverter. As compared to the original version that we have previously reported, the weight and volume were decreased by 37% and 38%, respectively. This compactness originated from the optimized circuit structure and the increased density of a wiring circuit. Conversion efficiencies of the MPPT charge controller and the direct current (DC)-alternating current (AC) converter reached 96.4% and 87.6%, respectively. These efficiency values are comparable to those for the original version. We have developed a PV power generation system consisting of this inverter, a spherical Si solar cell module, and a 15-V Li-ion laminated battery. The total weight of the system was below 6 kg. The developed system exhibited stable output power characteristics, even when...
-
A compact SiC photovoltaic inverter with maximum power point Tracking Function
Solar Energy, 2017Co-Authors: Yuji Ando, Takeo Oku, Masashi Yasuda, Yasuhiro Shirahata, Kazufumi Ushijima, Mikio MurozonoAbstract:A compact 150 W photovoltaic inverter was developed using SiC devices, which integrated a maximum power point Tracking charge controller and a direct current (DC) - alternating current (AC) converter into a single module. The DC-AC converter circuit was built with four SiC metal-oxidesemiconductor field-effect transistors, while the DC-DC converter circuit built with four SiC Schottky barrier diodes. An increase of the switching frequency led to the module of a reduced size (250 × 180 × 28 mm3), which is just one third volume of a commercial Si-based inverter available today. Besides being compact, the conversion efficiency of the DC-AC converter was approximately 3% higher than that of the commercial Si-based inverter. In addition, the MPPT controller showed a conversion efficiency exceeding 96%, which raised the total efficiency under practical operation conditions up to 86%.
Masashi Yasuda - One of the best experts on this subject based on the ideXlab platform.
-
A state-of-the-art compact SiC photovoltaic inverter with maximum power point Tracking Function
2018Co-Authors: Yuji Ando, Takeo Oku, Masashi Yasuda, Kazufumi Ushijima, Hiroshi Matsuo, Mikio MurozonoAbstract:We have developed a 150-W SiC-based photovoltaic (PV)-inverter with the maximum power point Tracking (MPPT) Function. The newly developed inverter achieved a state-of-the-art combination of the weight (0.79 kg) and the volume (790 mm3) as a 150-250 W class PV-inverter. As compared to the original version that we have previously reported, the weight and volume were decreased by 37% and 38%, respectively. This compactness originated from the optimized circuit structure and the increased density of a wiring circuit. Conversion efficiencies of the MPPT charge controller and the direct current (DC)-alternating current (AC) converter reached 96.4% and 87.6%, respectively. These efficiency values are comparable to those for the original version. We have developed a PV power generation system consisting of this inverter, a spherical Si solar cell module, and a 15-V Li-ion laminated battery. The total weight of the system was below 6 kg. The developed system exhibited stable output power characteristics, even when the weather conditions were fluctuated. These compactness, high efficiencies, and excellent stability clearly indicated the feasibility of SiC power devices even for sub-kW class PV power generation systems.We have developed a 150-W SiC-based photovoltaic (PV)-inverter with the maximum power point Tracking (MPPT) Function. The newly developed inverter achieved a state-of-the-art combination of the weight (0.79 kg) and the volume (790 mm3) as a 150-250 W class PV-inverter. As compared to the original version that we have previously reported, the weight and volume were decreased by 37% and 38%, respectively. This compactness originated from the optimized circuit structure and the increased density of a wiring circuit. Conversion efficiencies of the MPPT charge controller and the direct current (DC)-alternating current (AC) converter reached 96.4% and 87.6%, respectively. These efficiency values are comparable to those for the original version. We have developed a PV power generation system consisting of this inverter, a spherical Si solar cell module, and a 15-V Li-ion laminated battery. The total weight of the system was below 6 kg. The developed system exhibited stable output power characteristics, even when...
-
A compact SiC photovoltaic inverter with maximum power point Tracking Function
Solar Energy, 2017Co-Authors: Yuji Ando, Takeo Oku, Masashi Yasuda, Yasuhiro Shirahata, Kazufumi Ushijima, Mikio MurozonoAbstract:A compact 150 W photovoltaic inverter was developed using SiC devices, which integrated a maximum power point Tracking charge controller and a direct current (DC) - alternating current (AC) converter into a single module. The DC-AC converter circuit was built with four SiC metal-oxidesemiconductor field-effect transistors, while the DC-DC converter circuit built with four SiC Schottky barrier diodes. An increase of the switching frequency led to the module of a reduced size (250 × 180 × 28 mm3), which is just one third volume of a commercial Si-based inverter available today. Besides being compact, the conversion efficiency of the DC-AC converter was approximately 3% higher than that of the commercial Si-based inverter. In addition, the MPPT controller showed a conversion efficiency exceeding 96%, which raised the total efficiency under practical operation conditions up to 86%.
