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Fiber Optic Sensors for Temperature Measurement in Emobility

Fiber Optic Sensors for Temperature Measurement in Emobility, This presentation explains advantage of fiber optic sensors in Emobility Industry.

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Fiber Optic Sensors for Temperature Measurement in Emobility

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  1. RM Fiber Optic Solutions for Emobility Segment

  2. RM Fiber Optic Solutions for Emobility Segment Electric Trucks Electric Off-Road Veh Railways Electric Cars Electric Buses Electric Vans Emobility Aeroplanes Electric Boats Charging Stations Charging Centers Drones Electric Ships 2

  3. Why Fiber Optics Now? Electric vehicles are going to 1000V+, 700A+ for cars and 2400V+, 1000A+ for trucks § Traditional thermocouples are too slow and significant limitation above 200V § Thermocouple output is in millivolts and gets affected by Electric and Magnetic fields § Safety Risk from Thermocouples: Risk of short circuit at higher voltages, Corrosion etc. § Thermocouples are Non-Linear: Sensors are non-linear, require complex compensation § Thermocouples are large: not suitable to fit into tiny spaces on PCBs, Power Electronics, Charging Points § Slower Response: Thermocouples are not fast enough for accurate thermal profiling § Variation from Batch to Batch: Impact accuracy and repeatability of testing § Susceptible to High Voltage and Magnetic Fields § Thermocouples are not suitable for Explosive Environments § Thermocouples are not suitable with longer signal cables § 3

  4. E-Mobility Applications Sensing Solutions for: Battery Simulation Battery Test Stands Motor Testing Power Train Testing Power Electronics Li-ion Battery packs Power Cables Fast Chargers Leading Temperature, Pressure, Vibration, Partial discharge sensing solutions for E-Mobility segments that are undergoing major design transformations with EV’s. 4

  5. Emobility Components Tested with Fiber Optic Sensors Battery and BMS Charging Plug Power Electronics HV Cables, Terminations and Joints EV Motors 5

  6. Fiber Optic Temperature Solutions: EV Motors • Solution for all kinds of EV Motors and Drivetrains DC Motors Series and Brushless Permanent Magnet Synchronous Motors (PMSM) Switched Reluctance Motors Induction Motors Series Motors (PMDC) Radial Flux PMSM SRM-Motor Squirrel Cage Brushless DC (BLDC) Axial Flux PSMS SRM - Motor Slip Ring 6

  7. Fiber Optic Temperature Solutions: EV Motors Why Temperature Testing and Monitoring in EV Effective Countermeasures in Practice 1. Design Optimization and Stress Testing at Product Motors? Development Stage 1. ~30%-40% of all failures in Induction Motors are related Accurate Motor Thermal Profiling • to Winding Insulation Breakdown Precise localization of weak points in insulation system • 2. High Temperature is mainly responsible for degradation Maximize Cooling System Efficiency • of Winding Insulation 2. Identify the Performance Limits of Motor accurately Winding Insulation Breakdown results into significant • 3. Accurate analytics for remaining design life and thermal stress – Start of a Vicious Cycle identification of incipient failure conditions 3. Higher Power Density of EV/HEV Motor drive systems 4. Effective machine thermal control and Protection further increases the risk of Thermal Stress 5. Design Refinement / Optimization based on filed data 4. EV/HEV Motors are susceptible to aging effects due to high motor loads encountered in Harsh Environments: Steep Terrains, High Payload, High • Ambient Temperature Rapid accelerations and breaking • 7

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