A DC-Bus Planar Rogowski Coil Based Current Sensor for Half-Bridge Applications
- Resource Type
- Conference
- Authors
- Spieler, Matthias; Chang, Che-Wei; El-Refaie, Ayman; Alvi, Muhammad H; Dong, Dong; Burgos, Rolando
- Source
- 2023 IEEE 24th Workshop on Control and Modeling for Power Electronics (COMPEL) Control and Modeling for Power Electronics (COMPEL), 2023 IEEE 24th Workshop on. :1-7 Jun, 2023
- Subject
- Components, Circuits, Devices and Systems
Power, Energy and Industry Applications
Inductance
Voltage measurement
Power measurement
Pulse measurements
Silicon carbide
Parametric study
Prototypes
Current measurement
Rogowski coil
Half-bridge
- Language
- ISSN
- 2151-1004
This paper investigates the utilization of a planar Rogowski coil located between the dc-bus traces to measure the half-bridge’s switching transient current. The sensor’s fundamentals are explained, and design considerations are derived from a comprehensive parametric study analyzing the impact of a non-uniform dc-bus current distribution on the sensor’s mutual inductance. A compact current sensor prototype is designed and fabricated for a SiC MOSFET half-bridge application. Simulations show a minimal increase in the current communication loop stray inductance of 399 pH. The current sensor’s performance is experimentally validated with double pulse tests.