MEA E-Bike Dynamometer System According to
EPAC/EMC Standard / Inertial Dynamometer
MEA EPAC – ELECTRIC BIKE TEST SYSTEM
E-bicycles, also known as pedelecs (short for pedal electric cycles) or EPACs (electric power-assisted cycles), represent a more and more popular variation of the traditional bicycle. E-bicycles feature a small electric motor that provides power to the bicycle’s drive mechanisms, reducing or eliminating altogether the physical energy normally required. As such, they are particularly useful for long bicycle trips, or for traveling over difficult terrains. The MEA dynamometer system is working according to standards for road vehicles including EPACs (EN 15194:2009-06) and/or PAS. The system can be used for pedelecs and for all sorts of motorized bicycles, tricycles, quadricycles, cargo-bikes, and others, with or without pedal combination.
SYSTEM OVERVIEW
MEA’s implementation of the standard, combined with unique patented capabilities, enables you to defy the great challenges and enables your support engineers in their efforts to continuously improve electric drives. In addition, the system enables us to fulfill the safety tests, according to the standard EN 15194 EPAC, Appendix C. The MEA EPAC is full turnkey systems. The scope of the MEA EPAC is comprised of AC induction servomotors as loading motors with high-resolution encoders, high-accuracy torque sensors, integrated power analyzers, and temperature measurement modules, together with unique dynamic tests during the motor acceleration period.
FOUR-QUADRANT OR HYSTERESIS BRAKE:
E-BIKE UNIQUE TESTING CAPABILITIES
E-BIKE BATTERY SIMULATION
MAIN SYSTEM CAPABILITIES/FEATURES
MEA FOR EPAC BICYCLES:
An EPAC “electrically power-assisted cycle” bicycle is a “bicycle” if:
The MEA EPAC Bicycle tester gives you the option to:
The system is designed to comply with the standard request for high-frequency emission, enabling the electromagnetic immunity test. In addition, the system includes an output function for scaled voltage, enabling automatic testing at the EMI laboratory, showing speed ripple as a function of the test frequency.
SYSTEM SUITABLE FOR:
INERTIAL DYNAMOMETER:
SYSTEM OVERVIEW:
The motor is accelerated from 0 to the no-load speed. The load used is the moment of inertia of the motor’s rotor + flywheel. From the acceleration period, the system gives the complete motor load performances, together with additional dynamic unique testing, such as ripple torque, cogging, friction, and back EMF. Since the entire measuring time is very short (Acceleration time), the motor has no time to warm up. In such a way, the motor characteristics are given at constant pre-defined temperature. The method is very accurate (± 0.2%) test results are very well reproducible, regardless of the operator and independent of any brakes, especially of their additional mechanical losses. The method clearly shows the influence of the temperature on motor performance and efficiency. The system includes a very user-friendly software, presenting the data in graphs and tables, and saving them for evaluation, comparison, quality assurance, etc.
FEATURES:
OFTWARE FEATURES:
The testing system includes a very user-friendly software: