Induction Motor Controllers
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
Motor Controllers Technology
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.
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.
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.
Performance and Safety
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.
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.