Wisconsin Alumni Research Foundation

WARF: P210208US01

Inventors: Thomas Jahns, Hang Dai, Bulent Sarlioglu, Renato Amorim Torres

The Invention
UW Madison researchers have developed a switching circuit for a balanced current source inverter (CSI). The balanced CSIs utilize wide-bandgap semiconductors to address electromagnetic interference (EMI) issues. Switches generate a second common-mode voltage (CMV) component that forces the total CMV of the inverter to be close to zero. This suppression of the total CMV produced by the balanced CSI significantly reduces the conducted common mode electromagnetic interference. A controller manages the switches between an on-state and an off-state for reverse-voltage-blocking (RB) switches. When in the on-state, a reverse voltage is blocked by a respective RB switch, and a current with a positive polarity is conducted through the respective RB switch. When in the off-state, a voltage and the current are blocked by the respective RB switch.
  • Integrated motor drives for electric machines.
  • Particularly suited for aerospace and megawatt uses
Key Benefits
  • Increased fault tolerance and reliability
  • Smaller, lighter motor drives
Additional Information
For More Information About the Inventors
For current licensing status, please contact Michael Carey at [javascript protected email address] or 608-960-9867