AC inverter for 24-80V electric vehicle applications

AC Superdrive (ACS) is a family of inverters with power levels from 5 to 50kVA , designed for nominal voltages between 24V and 80V. The ACS is developed with traction, hydraulic pump and generator applications in mind which makes it an ideal choice for most battery-powered electric vehicles.

In addition to CAN bus communication, all ACS models are available with optional I/O to facilitate distribution of vehicle control functionality in a larger control system, or for stand-alone operation.

  • Best in class quality and reliability, achieved through superior design and world class manufacturing processes
  • Rugged design suitable for the demanding environment of electric vehicles. Protected against ingress of dust and water to IP65.
  • Powerful ARM processor and operating system allows parallel execution of customized vehicle control tasks and motor control tasks
  • I/O version allows vehicle control to reside in the ACS, directly interfacing vehicle sensors and actuators
  • Software Quality is assured through development and review processes compliant to Automotive SPICE®
  • Industry standard CANopen and J1939 protocols for reliable communication in the vehicle
  • Extensive and powerful event handling and data logging simplifies troubleshooting and minimizes vehicle down time
  • Supports AC induction, AC synchronous, brushless DC motors. Selected models have optional DC motor output
  • Standard firmware with built-in support for traction, pump or generator applications, including functions such as hill-hold, programmable braking/acceleration characteristics, dual-traction, and best performance curve
  • Peer to peer communication allows master-less communication between nodes on CAN bus
  • Auto tuning functionality for pairing the controller with a motor already installed in a vehicle
  • Limitation of the output as a function of motor speed, motor and controller temperature, battery voltage, DC power and/or motor torque to protect powertrain components
  • State of the art vector control with optimal efficiency throughout the full speed range


Motor type Induction AC, Synchronous AC, Brushless DC
Communication CAN (CANopen, J1939)
Switching frequency 4, 8, 12, 16 kHz
Operating stator frequency 0-250 Hz
Control mode Speed, torque, current, or DC voltage
Connector AMP SEAL 23-pin or AMP SEAL 35-pin
Operating temperature -40°C to + 55°C (-40°F to +131°F)
Storage temperature -40°C to +70°C (-40°F to +158°F), ambient humidity of 95%
Protection class IP65
Standards UL 583 and EC declaration of incorporation of partly completed machinery according to EN1175-1.


ACS Model Nominal DC supply voltage Rated RMS current (S2, 2min)** Rated RMS current (S2, 1h)*** Rated power (S2, 2min)** Rated power (S2, 1h)***
ACS24XS* 24 V 350 A 150 A 10.3 kVA 4.4 kVA
ACS24S 24 V 500 A 215 A 14.7 kVA 6.3 kVA
ACS36XS* 36 V 300 A 125 A 13.2 kVA 5.5 kVA
ACS36S 36 V 450 A 200 A 19.8 kVA 8.8 kVA
ACS36S+ 36 V 500 A 215 A 22.0 kVA 9.5 kVA
ACS36M 36 V 675 A 300 A 29.8 kVA 13.2 kVA
ACS36L 36 V 900 A 400 A 39.7 kVA 17.6 kVA
ACS48XS* 48 V 250 A 100 A 14.7 kVA 5.9 kVA
ACS48S 48 V 350 A 150 A 20.6 kVA 8.8 kVA
ACS48S+ 48 V 450 A 200 A 26.5 kVA 11.8 kVA
ACS48M 48 V 525 A 225 A 30.9 kVA 13.2 kVA
ACS48L 48 V 700 A 300 A 41.2 kVA 17.6 kVA
ACS48XL 48 V 875 A 375 A 51.4 kVA 22.0 kVA
ACS80S 80 V 220 A 100 A 21.6 kVA 9.8 kVA
ACS80M 80 V 330 A 150 A 32.3 kVA 14.7 kVA
ACS80L 80 V 440 A 200 A 43.1 kVA 19.6 kVA
ACS80XL 80 V 550 A 250 A 53.9 kVA 24.5 kVA

* Available with optional 1-quadrant DC motor output (S3 15% rating same as 2min rating). Not available with 23-pin connector.

** 2 minute rating at 8 kHz switching frequency and 25ºC ambient temperature
*** 1h rating at 8 kHz switching frequency. 40ºC ambient temperature. and 6m/s air flow through finned heat sink