ISO 23280:2022

Overview

ISO 23280:2022 specifies a laboratory test method for evaluating the energy performance of electrically propelled mopeds and motorcycles using a motor dynamometer. Instead of testing a whole vehicle on a chassis dynamometer, the standard measures a traction motor system (motor + inverter) mounted to a dynamometer test bench. A load motor system simulates running resistance, drivetrain friction and inertia so that the method can estimate specific energy consumption and range for two‑wheeled electric vehicles.

Key topics and technical requirements

• Scope: Applies only to two‑wheeled electric motorcycles and mopeds. Applicable to any transmission type (chain, belt, gears, CVT, shaft, direct drive) provided gear ratios and transmission efficiencies are specified.
• Motor dynamometer setup: Defines the motor dynamometer test bench architecture - test motor system, load motor system (motor + inverter), DC power supply, transducers and data acquisition.
• Resistance torque determination: Converts vehicle running resistance (based on equivalent mass, acceleration, rolling resistance and aerodynamic drag) into the torque to be applied to the traction motor. Annexes cover central‑drive and in‑wheel drive derivations.
• Control modes: Speed–torque control where the traction motor is speed‑controlled and the load motor torque‑controlled to follow target driving cycles (UDC, EUDC, WMTC).
• Measured metrics and calculations: Consumed energy, travelled distance, motor system efficiency and reference energy consumption (ratio of consumed energy to distance). Test conditions, sensors (torque, speed, voltage, current, temperature) and power meter accuracy requirements are specified.
• Reporting: Test report template and required test conditions are included (Annex E and informative annexes on parameter classifications).

Practical applications and users

Who uses ISO 23280:2022:

• EV motor and inverter manufacturers validating motor system energy performance before vehicle integration.
• OEMs and drivetrain integrators estimating vehicle range and optimizing gear ratios or transmission efficiencies.
• Test laboratories and certification bodies performing repeatable bench tests for R&D, benchmarking and regulatory submission.
• Battery/system engineers sizing battery capacity and predicting energy consumption for specified driving cycles.

Practical benefits:

• Faster, lower‑cost evaluation of motor systems compared with full vehicle chassis testing.
• Repeatable comparison of traction motor assemblies across designs and suppliers.
• Early validation of drivetrain losses (transmission, friction, inertia) and their impact on range estimation.

Related standards

• ISO 13064‑1 / ISO 13064‑2 - BEV mopeds & motorcycles performance and operating characteristics
• ISO 11486 / ISO 28981 - Running resistance setting on chassis dynamometers
• IEC 60034‑1, IEC 60034‑2‑1 - Rotating electrical machines rating and loss/efficiency tests

Keywords: ISO 23280:2022, electric motorcycles, electric mopeds, motor dynamometer, energy performance test, traction motor system, specific energy consumption, range estimation, running resistance, transmission efficiency.