EV Scooter

EV Scooter TestBench Dynamometer

MEA EV Scooter TestBench Dynamometer  is designed for  the durability test, routine performance test and Road Condition Simulation test of the electric scooter motor and motor controller.

The test bench is mainly used for routine performance test, durability and load test as well as other customized development tests such as Motor or Motor Controller performance test,  Research and Development process 

The MEA EV Scooter Dynamometer can be used to test the performance of the electric motor  for the electric scooter. It will provide user with the hardware test support and assist user to improve the design and verify the product performance.

EV Scooter testing Features:

Selected Capabilities:

• The MEA Regenerative Dynamometer System (MEA RDS) enables:

  • Complete load performance testing: Torque, Speed, Current, Efficiency, Power Input, Power Output.
  • Standard electrical parameters testing: HV, Vibration, Noise, and others.
  • Additional testing: Cogging, Back EMF, Friction, Friction Spectrum, Ripple Torque.
  • Automatic temperature rise test: Thermocouple device with 4 to 16 channels, Current, Voltage, Speed, Torque, Input Power, Output Power, all synchronized to each temperature.
  • EV Scooter motor Drive Cycle Load Simulation: Real-time simulation of scooter/driver, with acceleration, brake, change of vehicle states.
  • Battery Simulation: Battery cycle testing (Charge/Discharge), Battery SOC (State Of Charge) script and Battery SOD (State Of Discharge) script, during advanced battery simulation and simple battery simulation; Special feature: Low voltage dip at current transient; System includes Output Filter with high capacitance; Testing at U mode: Voltage Control (CV).
  • Battery Testing: I+ mode: Current Control (CC+); I- mode: Current Control (CC-); P mode: Power Control (CP), CC-CV, Step for cut-off condition (ET, EV, EC, CC time, CV time, Cap%, etc..), Protection (OV & LV, OC & LC, OT).
  • Additional EM Tests: Performance Generating Mode & Performance Motoring Mode, Stall Torque, Cogging Torque, Back EMF RMS, Open Circuit Back EMF, Back EMF Constant K_E, No Load Coupled & Uncoupled, Torque Ripple Measurements at Low RPM & at High RPM, Electromechanical Time Constant, Voltage and Current Harmonics, Load from Excel File, Speed Torque Scope Viewer, Deceleration Test (MOI Calculation), Servo Bandwidth (Speed Loop & Current Loop), Dynamic Testing during acceleration and deceleration, Friction vs. Speed & Friction Drag Torque, Torque Speed FFT, Performance at Variable Voltage, Inductance Test 3 Phases, Vibration; ISG Tests: Generation Characteristic; ISO Efficiency Tests: ISO Efficiency and ISO Efficiency Contour, S1 to S8 – IEC duty cycles of operation for electrical motors.

Battery Simulation

As a part of the E-mobility motors testing system, Battery simulation is a must.

The MEA EV Scooter MOTOR Test Bench Dynamometer provides the following testing and simulations 

A Regenerative DC power supply with Four-Quadrant operation allows to get accurate simulations and testing results:

• Battery Resistance Model System.
• Battery Charging Simulation
• Battery Discharging Simulation 

Battery simulation:
• Modular scalability in the typical power range from 5 to 500 kW
• Modular scalability in the typical current range from +/- 10 to 1 200 A
• voltage ranges (5  to 1 000 V) that can be adapted to the specific application
• Fast voltage control (typically: 3 ms)
• Fast current control (typically: 1.3 ms)
• Fast load transient response (typically: 1.3 ms for a load step of 10 % to 90 % of output current)
• High control accuracy – typically 0.1 % for current and voltage
• Real-time simulation 
• Protection against short circuits
•  insulation monitoring
• Standalone or integrated on the intermediate circuit (DC)
•Battery simulation can be supplied as a standalone solution or can be integrated into the test system prior to delivery.