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Curtis AC Induction Motor Controllers

AC motor controllers are the established technology for almost all modern electric vehicles, and Curtis is the state of the art choice, providing unmatched reliability, durability, and sophisticated performance optimization capabilities. Curtis has been developing the most pioneering products in this field for over four decades now, having proven their quality and operational excellence in the most demanding industrial applications. Their AC motor controller product range covers all possible needs in a specialized manner, while each product remains versatile enough to serve in multiple roles and even be repurposed.

Curtis AC Motor Controllers Technology

Besides the experience and build quality of the Curtis motor controllers, the advantageous technologies that are implemented onto them provide a whole set of operational benefits for the user.

  • Auto-Tuning

Having trouble configuring your motor controller to the AC motor model you are using? Curtis controllers eliminate such problems with their auto-tuning functionality, using a database of preconfigured settings for all AC motors made by the largest manufacturers so you only have to select the model. If a particular motor isn’t available in the database, you may still characterize it through a simple step by step procedure by using the hand-held programmer.

  • Compatibility

Curtis knows how to make products that are truly interoperable and easy to set up. All of the Curtis AC motor controllers support the CANbus serial communications standard that makes connecting the modules of a vehicle with the controller a walk in the park. In addition to that, Curtis controllers also support the CANopen standard that is widely used in forklifts and the SAE J1939 communication protocol that most modern agricultural and construction vehicles use right now.

  • Vehicle Performance and Safety

Curtis controllers aren’t simply making the AC motor operation possible, but actively monitor and optimize all performance aspects of the vehicle. For example, all Curtis AC controllers have a dual-drive functionality to create an artificial differential effect that protects the tires from excessive wear and makes tight turns possible for even large trucks. Moreover, the IFO vector control system allows the controller to monitor the performance variables through a set of sensors and feedback loops and respond dynamically to optimize the torque and flux constantly and continuously. This is done thanks to a clever mathematical modeling approach that allows Curtis to use a superior system compared to the scalar control techniques that are generally used in the industry. Finally, the EPS (Electric Power Steering) system that is supported by the Curtis controllers provides a safe steering through monitoring and control using a steering actuator, an angle feedback sensor, and an input device that passes the steering command through the CANbus unit. Even in the case of failure of one of the above components, the EPS system’s diagnostics will activate a sophisticated graceful degradation procedure that will keep the vehicle operator and the people around safe.

  • Easy to Configure

Curtis has developed their own programming language called VLC (vehicle control language) that is easy to understand and use in order to program the motor controller. They also offer a comprehensive library of VCL functions and combinational or sequential logic that will cover most of the usual needs.

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933/3D72HV CURTIS 933/3D 72HV 933/3D72HB Curtis 933/3D 72HV

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