Electronics Experts Evaluate Hybrid Vehicle Patent Dispute


Hybrid Vehicle Expert WitnessThis automotive electronics case involves a patent dispute in Michigan regarding certain electrical control systems used by a major manufacturer of hybrid vehicles. The technology in question assists in the efficient allocation of electrical energy to the vehicle’s drivetrain, and prevents excess energy from being used under sub-optimal conditions. According to the plaintiff, the defendant firm employed an identical system in its line of hybrid electric cars, which were released 2 years after the plaintiff’s.

Question(s) For Expert Witness

  • 1. Are you familiar with control systems for hybrid electric vehicles?
  • 2. What is your engineering experience as it relates to power electronics?
  • 3. Please explain why you are qualified to review this case.

Expert Witness Response E-024232

I am quite familiar with HEV controls. My research interests include: simulation of electric-drive vehicle powertrain and thermal management and CFD simulation of electric-drive vehicle battery pack thermal management. I have published and lectured on the HEV controls, and I have recently published SAE papers on the subject. I have knowledge of electric motor inverter/controllers and DC/DC converters, in their application within an HEV powertrain, with the electric powertrain energized by a ~340V Li-ion battery pack. I have more experience with the e-motor inverter, in the areas of testing (laboratory motor dyno), calibration, and fault diagnostics and mitigation.

Expert Witness Response E-024079

Expert-ID: E-024079

I am very familiar with control systems for hybrid electric vehicles (HEVs). I have helped teach two HEV courses to employees of a major automotive manufacturing firm. My research efforts include the development of design and control strategies for HEVs using models that include characteristics of the power electronics. This activity is funded by The Department of Energy (DOE) and a major manufacturer of vehicle engines. I am also the also the lead faculty member for an academic center focused on the design, modeling, and control of advanced HEVs.

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