Challenges and Implementation of Online in-Situ RDSON Measurement in a Three-Phase Inverter

Chondon Roy, Namwon Kim, Daniel Evans, James Gafford, Babak Parkhideh

Research output: Contribution to journalArticlepeer-review

Abstract

This paper addresses the critical issue of real-time monitoring of on-state resistance (RDSON) monitoring of all power semiconductor devices within a three-phase inverter. An optimized on-state voltage (VDSON) measurement circuit and configuration for a multi-phase converter architecture is proposed, designed to overcome the challenges posed by different characteristics and non-idealities of current and voltage sensor components. In addition to the hardware, the solution includes a data processing and qualification strategy that minimizes the impact of switching noise and processing circuitry non-idealities on RDSON calculation. The efficacy of the approach is demonstrated through experimental results from a three-phase inverter, which is designed with Silicon Carbide (SiC) Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs). This work contributes a novel solution to the field, enhancing the reliability and efficiency of power semiconductor device monitoring.

Original languageEnglish
Pages (from-to)1-10
Number of pages10
JournalIEEE Transactions on Power Electronics
DOIs
StateAccepted/In press - 2024
Externally publishedYes

Keywords

  • Inverters
  • Monitoring
  • MOSFET
  • Noise
  • On-state resistance (RDSON)
  • Online in-situ health monitoring
  • Power measurement
  • Sensors
  • Voltage measurement

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