Hub Motor Dynamometer Test Bench for EV Motor Performance, Torque-Speed and Efficiency Testing

The in-wheel motor dynamometer test bench is specifically designed for the performance evaluation of electric in-wheel motors, providing a comprehensive testing solution to measure motor operating characteristics under various conditions. The system enables the assessment of key performance indicators—such as torque, rotational speed, electrical input, mechanical output, and efficiency—helping manufacturers evaluate product quality, verify design performance, and ensure production consistency.

This EV motor test bench can be flexibly configured to accommodate different in-wheel motor specifications, testing requirements, and production application scenarios. Whether utilized in an R&D laboratory or for quality inspection during production, it serves as a practical platform for capturing reliable test data and conducting thorough evaluations of motor performance.

A hub motor dynamometer test bench is a specialized testing system designed to evaluate the mechanical and electrical performance of electric hub motors.

Unlike traditional drive motors that transmit power via an external transmission system, hub motors have their drive components integrated directly into the wheel assembly. Consequently, testing protocols for these motors must account for specific factors such as their mounting structure, connection interfaces, rotational characteristics, and operational loads.

The HC-MTB300 hub motor performance test bench is designed to meet these testing requirements. It integrates a motor mounting fixture, a loading system, measuring instruments, and control software, and can be configured to provide a comprehensive assessment of a hub motor's operational performance.

Depending on the selected configuration, testing can cover:

• No-load operating characteristics
• Load and torque performance
• Rotational speed characteristics
• Input voltage and current
• Electrical input power
• Mechanical output power
• Motor efficiency
• Temperature rise testing
• Torque-speed characteristics
• Long-term operational performance

For manufacturers, the data obtained from these measurements serves as a valuable reference throughout the processes of product R&D, design verification, production inspection, and quality improvement.

• Direct-Drive Loading Architecture: High-response AC dynamometer delivers precise torque loading at low rotational speeds, matching the native operating profile of in-wheel hub motors without gear-induced measurement error.
• Multi-Channel High-Speed Data Acquisition: Synchronized sampling of torque, speed, voltage, current, temperature, and vibration parameters at microsecond-level resolution for accurate efficiency mapping and loss analysis.
• Bidirectional Energy Regeneration: Power-regenerative loading system returns absorbed energy back to the grid, reducing operational energy costs by up to 70% compared to resistive loading solutions.
• Intelligent Test Automation Software: Pre-programmed test routines compliant with international standards, plus customizable test profile editor for specialized R&D applications.

• Outer-rotor permanent magnet synchronous hub motors
• Inner-rotor geared hub motors
• Direct-drive in-wheel motor assemblies
• Hub motor assemblies with integrated gear reduction
• Wheel-end motor drive systems
• Etc.

• Measurement of peak power and peak torque
• Verification of rated power and rated torque
• Plotting of torque-speed characteristic curves
• Generation of motor efficiency maps
• Measurement of total system efficiency
• Etc.

Our proprietary direct-coupling torque transmission design eliminates coupling backlash and torsional windup, delivering superior measurement accuracy at low speeds — the critical operating region for hub motor validation. This technology ensures true torque readings even at near-zero rpm launch conditions.

The self-tuning control algorithm automatically optimizes control parameters based on the inertia and electrical characteristics of the test specimen, ensuring stable operation across a wide range of motor sizes and types without manual gain adjustment.

The bidirectional DC bus architecture enables energy recovery during loading and braking tests to be fed back into the facility power grid. This not only reduces operational costs but also minimizes heat generation, creating a cleaner and safer laboratory environment.

Built-in test data management system automatically generates standardized test reports, stores historical test data, and supports data export in multiple formats. Advanced analysis tools include efficiency contour plotting, loss breakdown analysis, and thermal performance trending.

The system's modular design allows for field upgrades as testing requirements evolve. Dynamometer capacity, voltage range, and measurement channels can all be expanded without replacing the entire system, protecting your long-term investment.

Guangzhou HongCe Equipment Co., Ltd. is a professional manufacturer specializing in the research, development, and production of precision testing equipment for electric motors, automotive components, and electrical products. With our own in-house design team, advanced machining workshop, and strict quality control system, we deliver reliable testing solutions that meet international standards.

Our product portfolio spans motor test benches, IP waterproof testing equipment, endurance cycling testers, and various cable and wire testing instruments — serving customers in automotive, home appliance, aerospace, and third-party testing industries worldwide.

We take pride in our factory-direct business model, which means every piece of equipment is designed, built, and supported by the same team. This vertical integration ensures consistent quality, faster response times, and genuine value for our customers.

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