Balsara, Poras T.

Permanent URI for this collectionhttps://hdl.handle.net/10735.1/7106

Poras Balsara is a Professor of Electrical Engineering. He also serves as the head of the VLSI Design Lab while co-directing the Integrated Design, Engineering, and Algorithmics (IDEA) and the Renewable Energy and Vehicular Technology (REVT) Labs. His research interests include:

  • VLSI Design
  • Power Electronics
  • Techniques for the Design of Energy Efficient Systems
  • Digitally-Intensive / Digitally-Assisted Mixed-Signal Circuits
  • Application-Specific Architectures

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    Input-Output Linearization of a Boost Converter with Mixed Load (Constant Voltage Load and Constant Power Load)
    (Institute of Electrical Electronics Engineers Inc, 2018-03-08) Arora, Sameer; Balsara, Poras; Bhatia, Dinesh; 0000-0001-7019-9367 (Arora, S); 0000-0003-1263-787X (Balsara, P); Arora, Sameer; Balsara, Poras; Bhatia, Dinesh
    Power converters and electric motor drives when tightly regulated behave as constant power loads. These loads are different from resistive loads and have destabilizing negative impedance characteristics, which impact a system's stability. A boost converter is intrinsically nonlinear and is a nonminimum phase system at the output voltage with respect to the control input. The linear approximation of this boost converter loaded with a constant power load has a zero and poles in the right half of the s-plane, making the system unstable and very difficult to control. Control techniques that employ some form of system inversion cannot be implemented for a nonminimum phase system. This paper describes a technique to modify the nonminimum phase boost converter to a minimum phase for a constant power load, further implementing the input-output linearization technique to stabilize the system. This paper also provides a methodological analysis of the problem followed by the proposed solution. Furthermore, it verifies the analysis of the proposed solution through simulation and experimental results.
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    A Coil Detection System for Dynamic Wireless Charging of Electric Vehicle
    (Institute of Electrical and Electronics Engineers Inc.) Patil, Devendra; Miller, J.; Fahimi, Babak; Balsara, Poras T.; Galigerkere, V.; Patil, Devendra; Fahimi, Babak; Balsara, Poras T.
    Application of wireless power transfer while EV is in motion can significantly reduce the battery storage capacity. A major challenge in implementation of dynamic wireless power transfer (DWPT) is automatic detection of EV to avoid loss in efficiency and alleviate any safety concerns. This paper proposes a novel coil detection method for segmented DWPT. Detection of the EV ahead of its arrival will initiate energizing of the transmitter buried inside the road to enable just-in-time transfer of power. At low speeds, communication can be a reliable method to power up the transmitter coil. However, at high speeds on highways, communication latency time for the detection of an EV is long and hence impractical. This paper proposes a low cost and low power EV detection system based on a novel orthogonal coil arrangement to detect EVs traveling at high speeds. The proposed detection system was tested on a laboratory scale prototype for verification purpose. For high speed verification, simulation in PLECS was conducted to test the functionality of the proposed system. ©2019 IEEE

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