Ha’s Research

  • Mechanical Energy Conversions

EV/HEV
Wind Generations
Digital Appliances

  • Thermal Energy Conversions

Circuits and Control
Heating and Cooling

  • New-Material Based Energy

Evaluation and Modeling of various energy conversion materials and devices
CDI, SuperCap
SMA

  • Intelligent Machine

Integrated machines
Single External Feeding Wound Machine
3D Circuits

  • Power Circuit Topology

HA converter
PV inverter
High-Speed Switching Circuits
Small Cap. Technology

  • Smart Grid End User Technology

Green Home and Factory
Energy Managements
Energy Network

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