E-Axle Dyno Drive – TST200 SERIES - Unico
                     Engineering Excellence in Test Stand 
Applications
E-AXLE DYNO 
DRIVE
TST200 SERIES
Precise, efficient powertrain testing with ultra-low energy 
consumption
The UNICO E-Axle Dyno Drive is a leading-edge testing system combining different 
drive elements with a common DC power source. It can handle power from 50 kW to 
1000 kW, even more, if needed. This system is designed to work with common and 
advanced motor types, offering efficient and comprehensive testing capabilities. 
Whether you need steady, quick, or dynamic testing, this system can do it all and 
works well with any control system. It comes in designs that can be air or water-
cooled and includes many safety features for reliable and safe operations.
www.unicous.co (TST200-
m 06.2024_Released)
APPLICATION
e-Inverter 
S Testing
e-Motor 
Development Testing
Characterisation 
Efficiency Testing 
Calibration of control 
unit Performance 
Battery 
testing Durability 
e-Axle Testing
testing Validation Testing
FEATURES
Common DC-Bus: reduces both energy consumption and size of incoming AC Supply.
Optional Resonance Converter: removes the need for an Isolation Transformer, saves space, 
reduces heat loss and improves efficiency by a factor of (x4).
Total Torque Control: Ensures the precise simultaneous management of both motor torque and 
motor speed, for Torque Vectoring applications.
Closed Loop Control: Guarantees accuracy in motor control through continuous feedback 
and minimise uncertainty error during efficiency testing.
DC Disturbance Rejection: Option for remote voltage source to maintain a stable operation 
by effectively managing power fluctuations resulting from 6-Step inverter operation
High Accuracy Torque Estimator: Delivers reliable torque readings for improved 
dynamic control. Extended Overload Capability: Provides robust performance even 
under strenuous conditions.
Remote Voltage Sensing: to compensate for voltage drop in DC-Supply cables.
BENEFIT
S
LOW ENERGY COMPACT DESIGN
CONSUMPTION Saves space and enhances 
Minimize energy use while ease of integration into 
maintaining high performance existing setups
WIDE TORQUE RANGE WIDE DC VOLTAGE 
Delivers versatile application RANGE
potential from low to high torque Accommodates a broad spectrum 
of DC voltages, enhancing 
compatibility
FLEXIBLE REDUCED 
Features flexible settings for HARMONICS
remote voltage and current Lowers power disturbances 
measurements, reducing and enhances quality
infrastructure costs
0 (TST200-03.2024.V1 In-
2 W06o.r2k0)24_Released)
E-AXLE DYNO DRIVE - 
TST200
Unico’s E-Axle Dyno Drives’ feature a modular inverter design that fully regenerates 
energy back to the three-phase power grid. This system includes a proprietary digital 
current regulator and a cutting- edge controller that facilitates seamless operation of 
various AC dynamometer motors—including Asynchronous Induction, Synchronous 
Permanent Magnet, and Internal Permanent Magnet motors— without the need for the 
traditional current-loop setup.
Our drives utilize IGBTs with a switching frequency of up to 30kHz, delivering the 
necessary performance to operate high-speed dynamometer motors. This capability 
ensures accurate matching of the high-speed requirements of the E-Motor under test.
Unico E-Motor 
Emulator
Mains AC DC
Supply DC AC
Active Front 
End
3ph 
Resolve
Power
r
Inverte
r
HVDC
Vehicle 
control 
Network
Unico Battery 
Emulator
Mains AC
Supply DC
DC DC
The drives deliver remarkable speed and torque responses, with acceleration 
rates reaching 300,000 rpm per second, enabling precise testing under conditions 
that simulate realistic load resistance for various applications such as aggressive 
launch control, motoring, hill climbs, and diverse throttle settings. For Noise, 
Vibration, and Harshness (NVH) testing, the ultra-quiet operation mode 
supported by dual current regulators proves ideal, suitable for use in both 
anechoic and hemi-anechoic test cells.
0 (TST200-03.2024.V1 In-
3 W06o.r2k0)24_Released)
Control Simulation Data Acquisition 
System
Controlle
r
Enhance the development and testing of your electric vehicle propulsion systems with 
Unico’s E-Axle Dyno Drive, designed to simulate resistance accurately. This advanced 
tool allows for comprehensive evaluation and optimization of EV systems under 
controlled conditions, ensuring your products meet the highest standards of 
performance and reliability.
Specifications
AC Input 480VAC, 3Ph, 50/60Hz (other voltages available on request)
Ambient Up to 40°C, max 1000m above sea level, 95%RH non-condensing
Enclosure IP54 / NEMA 1 (other options available upon request)
Cooling Water cooled or air-conditioned cabinets available
Cabinet Paint RAL 7035 Rough Semi-gloss Poly Powder finish
Certification Compliance UL, CE, UKCA (other certifications available)
Control modes Torque, speed PID available, or controlled by test cell automation
Control Local and remote
Built in remote interface Analog as well as RS-422, RS-485, two 
ports (other interface and protocol, see 
options below)
Safety and control interlocks Hardwired, opto-isolated, software configurable
Data logging Data sampler through UEdit®
Dynamometer Induction, permanent magnet
Encoder feedback Most encoder, resolver feedback supported
Inline torque meter Industry standard inline torque meters supported
Battery emulator See Battery Emulator Brochure
Options
Isolation transformer Various sizes as required
Remote voltage sense Available
dV/dT Filter Standard for > 690 Vac (Optional  800Vdc
Cabinet Paint Finish Customer Specific
• CAN open • CC-Link • ControlNet • ControlNet
External communication • Ethernet • EtherCAT(async) • Interbus • LonWorks
interface • Modbus Plus • Profibus DPV1 • Profibus Master • EtherCAT (sync)
Specifications are subject to change without 
notice
unicollc www.unicous.com
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Website
0 (TST200-03.2024.V1 In-
4 0W6o.r2k0)24_Released)