Search Results - rajapandian+ayyanar

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Optimizing Solar Power using Array Topology Reconfiguration and Deep Neural Network
Photovoltaic (PV) energy systems have played a major part in meeting renewable energy requirements. However, power production from PV systems faces impediments such as partial shading due to environmental and man-made obstructions. Shading causes voltage and current mismatch losses that can significantly reduce the power supplied to the grid. Reconfiguring...
Published: 2/23/2023   |   Inventor(s): Vivek Sivaraman Narayanaswamy, Rajapandian Ayyanar, Cihan Tepedelenlioglu, Andreas Spanias
Keywords(s): Algorithm Development, Networks, IT, Software and Communication, Neural Computing, Performance Optimization, PS-Energy and Power, Solar Energy
Category(s): Physical Science, Environmental, Energy & Power, Computing & Information Technology, Alternative Energy
Soft-Switching, High-Performance Single-Phase AC-DC Converter
Invention Description Researchers at Arizona State University have developed a new circuit topology for single-stage, single-phase AC-DC power conversion with power factor correction (PFC) and galvanic isolation with a high frequency transformer. The invention improves the power conversion efficiency and power density of the converter—two of...
Published: 2/23/2023   |   Inventor(s): Rajapandian Ayyanar
Keywords(s):  
Category(s): Physical Science, Energy & Power
PWM Control of Dual Active Bridge Converters
A dual active bridge (DAB) DC-DC converter is ideally suited for high-power, galvanically isolated DC-DC conversion. The DAB DC-DC converter has advantages of high power density, Zero Voltage Switching (ZVS), bidirectional power transfer capability, a modular and symmetric structure, and simple control requirements. The DAB DC-DC converter can...
Published: 2/23/2023   |   Inventor(s): Amit Kumar Jain, Rajapandian Ayyanar
Keywords(s):  
Category(s): Semiconductor Devices
Connection Topology Optimization of Photovoltaic Arrays Using Neural Networks
The production of photovoltaic (PV) energy is affected by numerous external factors such as varying temperatures, soiling of PV panels, and partial shading which can significantly reduce power generated. Off-the-shelf PV arrays are typically connected in a series-parallel (SP) topology, featuring parallel-connected strings of series-connected panels....
Published: 2/23/2023   |   Inventor(s): Vivek Sivaraman Narayanaswamy, Andreas Spanias, Rajapandian Ayyanar, Cihan Tepedelenlioglu
Keywords(s): Algorithm Development, Networks, IT, Software and Communication, Neural Computing, Performance Optimization, PS-Energy and Power, Solar Energy
Category(s): Physical Science, Energy & Power, Computing & Information Technology, Alternative Energy, Environmental
Transformer-Less, Reduced Volume PV Inverter Topology
Inverters are devices typically used in solar power generation systems to convert electric current to a more useful type, but are prone to failure and are the main cause of malfunction in solar power systems. Using transformer-less (TL) inverters is a desirable alternative because of their higher efficiency, lower size, and lower cost. However, TL inverters...
Published: 2/23/2023   |   Inventor(s): Rajapandian Ayyanar, Yinglai Xia, Jinia Roy
Keywords(s): Power Electronics, Power generation, PV inverter, PWM converters
Category(s): Alternative Energy, Applied Technologies, Computing & Information Technology, Energy & Power, Physical Science, Semiconductor Devices, Semiconductors, Materials & Processes
Hybrid Space Vector PWM Schemes for Interleaved Three-Phase Converters
Three phase PWM converters are widely used in numerous applications including adjustable speed motor drives, uninterruptible power supplies and grid integration of renewable and distributed resources such as solar photovoltaics. Some of the important metrics of performance for these converters are related to the amount of total harmonic distortion...
Published: 2/23/2023   |   Inventor(s): Rajapandian Ayyanar, Xiaolin Mao, Amit Kumar Jain
Keywords(s):  
Category(s): Semiconductor Devices