Active Load Emulator

powered by LGE

“The Future of electric vehicle inverter testing”

Motor Emulation

  • Motor emulation accuracy over 95%
  • Fast respone for Torque / Rpm variation
  • Resolver and encoder interface
  • System protection for various fault conditions
  • Mulit-phase (3,6,12) motor applicable (G2.0)

Battery Voltage Emulator

  • Voltage source for evaluation inverter
  • Supply voltage up to 1000 VDC (G2.0)

Low Investment and Operation Cost

  • Compact design having small footprint
  • Low initial Investment and maintenance
  • High energy efficiency

Scalable Power Capacity (G2.0)

High power inverter test (Max 1.2 MW)


Dimensions (WxHxD)740 x 2170 x 1150mm1250 x 2000 x 1290mm
Power Capacityindividual channel 150kW, Parallel 300kWindividual channel 150kW, Parallel 300kW
DI Water or compatibleDI Vatten eller compatibel
Coolant Flux45 l/min60 l/min
IP ratingIP20IP20
Service Life10 years10 years

Battery Emulator:

Nominell Power60 kW80 kW
Output Voltage195 - 800 VDC195 - 1000 VDC
Nominell DC Current240 A240 A

Motor Emulator:

Numbers of Motorsindividual two, parallel one motorindividual two, parallel one motor
Operation AC Frequency0 - 800 Hz0 - 1500 Hz
Individual AC Load Current400 Arms (Nom) 500 Arms (60s / 10 min stop) 400 Arms (Nom) 500 Arms (60s / 10 min stop)
Parallel AC Load Current800 Arms (Nom) 1000 Arms (60s / 10 min stop)
800 Arms (Nom) 1000 Arms (60s / 10 min stop)
Power ExtensionN.A.Up to 4 parallel connections
Back EMF0 - 480 Vrms0 - 612 Vrms
Torque directionP,NP,N
Numbers of Motor Poles 24 poles24 poles
Resolver Lobes / Offset2 - 24 2 - 24
Resolver Excitation Frequency10 - 20 kHz10 - 20 kHz
Encoder Typ / PPRN.A.Incremental (A, B, Z) / 0 - 512 PPR
CommunicationCAN 2.0 ACAN 2.0 A

ALE G1.0

Ale G2.0



Active Load Emulators are also very relevant in inverter test bench technology. An inverter is an electronic device that converts direct current (DC) to alternating current (AC) or changes the frequency, voltage or phase angle of the AC output. Such inverters are used in various applications, including renewable energy sources such as wind or solar energy, electric vehicles, industrial installations and more.

Load simulation: Inverters must be tested under various load conditions to ensure they can deliver expected performance and stability. Active Load Emulators enable simulation and testing of the output power produced by the inverter in a controlled environment.

Power hardware in the loop: Due to the regenerative feedback made possible by the use of this technology, energy requirements are significantly reduced.

Efficiency testing: The efficiency of an inverter can be measured by simulating different load conditions. An Active Load Emulator can load the inverter with variable loads and evaluate its efficiency over the entire operating range.

Dynamic testing: Inverters often need to handle rapid load changes, especially in applications such as electric vehicles. An Active Load Emulator can replicate such dynamic load changes and evaluate the inverter's ability to respond quickly.

Stability checks: Inverters must operate stably, without causing unwanted oscillations or instabilities in the system. Simulating different load conditions with Active Load Emulators can help verify inverter stability.

Development and validation: When developing new inverters or updating existing models, Active Load Emulators facilitate thorough validation and optimization before the inverters are deployed in real-world applications.

Overall, Active Load Emulators are indispensable tools in inverter test bench technology to analyze and ensure the performance, reliability and interaction of inverters with the grid or other energy sources.

Active Load Emulator