Search Results - rajapandian+ayyanar

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  1. 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: 4/2/2025
    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
  2. 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: 2/13/2025
    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
  3. 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
  4. 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
  5. 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: 2/13/2025
    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
  6. 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

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