AC Induction Motor Controllers
AC Induction motors are industry workhorses thanks to their simple and inexpensive construction. They are commonly used in traction for electric vehicles. AC Induction motors are being used increasingly in robotics and automation applications thanks to advanced electronic controls. Roboteq offers a growing line of single and dual channel Variable Frequency Drives for AC Induction motors, ranging from 60A to 500A per channel. Just match the voltage and current rating using our Product Tables below, or the Product Finder.
AC Induction Motors with RoboG4™ Technology
Roboteq is expanding the capabilities of its RoboG4™ technology to AC induction motor products, delivering advanced performance and efficiency to a wider range of applications. Key features include a 16 kHz current loop, FOC Speed and Torque control, cascaded control operation, decoupling control, automatic motor characterization, and automatic field weakening.
These innovations enable precise torque and speed control, enhanced motor efficiency, and exceptional power density. With dual-channel operation, support for battery-powered systems, regenerative braking, fieldbus connectivity, rugged construction, Functional Safety (STO), and advanced protection features, Roboteq’s ACIM RoboG4 products set a new standard for reliability and versatility in demanding environments.
RoboG4 ACIM Drive Features
Supported Operating Modes
Mode | Feedback | Description | Advantages/ Disadvantages |
|---|---|---|---|
Scalar / VpH | None | Simple, open-loop mode where Voltage and Frequency change together at a fixed ratio | Pro: Simplest, always works with any motor Con: Inefficient with variable load |
Controlled Slip | Encoder | Closed loop mode that adjusts Voltage vs Frequency to keep slip within optimal range | Pro: Simple. Efficient, Easy to tune Con: Not optimal. Speed control only |
FOC - Torque Control | Encoder | Efficient Closed Loop Torque mode that uses Field Oriented Control | Pro: Most efficient Con: Complex tuning |
FOC - Speed Control | Encoder | Efficient Closed Loop Speed mode that uses Field Oriented Control | Pro: Most efficient Con: Complex tuning |
Four drive modes are available, ranging from the simplest Scalar to the most complex Field Oriented Control modes. Operating your motor will be a plug and play experience. Expert tools and support will allow you to fine tune and get the most of your motor.
FOC Current Loop Setup with Auto-Parameter Estimation
The RoboG4 ACIM drive simplifies the process of setting the FOC (Field Oriented Control) current loop by automatically characterizing the motor and estimating the necessary parameters. Once the motor is characterized, the user only needs to select the desired FOC current loop bandwidth. This makes configuring the current loop quick and easy, ensuring optimal performance with minimal effort.
Get More Torque and Speed With Field Weakening
Unlock higher performance with automatic field weakening—easily enabled through the drive configuration. By adjusting the motor’s magnetic flux above base speed, the drive allows your application to reach greater top speeds while sustaining torque more effectively. It’s a smart way to extend your motor’s capabilities without compromising control.
Precise Control With Cascaded Speed–Torque Operation
RoboG4 ACIM drives feature a cascaded control architecture where speed and torque loops operate in tandem, ensuring responsive and stable performance across a wide range of conditions. The user can configure the current reference strategy to match their application—choosing between Efficient Partial Load (EPL), constant magnetizing current (Id), or field weakening—each offering a different balance of torque, speed, and efficiency.
Robotize Your Material Handler
Add Roboteq’s Magnetic Guide Sensor and you have a fully functional, line following Automatic Guided Vehicle with just two components.
Make it even better with our Battery Management System for Lithium Batteries, add our Robot IO eXtender Module (RIOX) with IMU for extra stability. Use matching motor/wheel assemblies from our Validated Motor Partners. Download Magnetic Navigation Software and get free, expert Support from Roboteq to make it all work together for you!
Interface with Anything
Our controllers can be operated from practically anything. From simple push buttons, to Joysticks, Radios, PLCs, or Computers, Roboteq can interface with it. A generous number of Pulse/Analog/Digital Inputs are available for limit switches, potentiometers, encoders, buttons or sensors. Digital Outputs provide for braking, lights, or solenoids. Need more IO? Use our RIOX IO eXtender via CANbus and know no limits!
and - if - loop - goto - next
These are some of the keywords all our controllers understand thanks to their built-in MicroBasic programming language. Think of it as having a PLC built right into the controller, at no extra charge. This Roboteq exclusive feature will let you tailor the controller to match your most exotic requirements.
Yes, We CAN!
All our controllers have a 1Mbit CANbus interface. Using a simple wire pair, you can make two or more controllers work together, connect to Joysticks, PLCs, Battery Management Systems, or any other smart sensor. And thanks to four different available CAN protocols, you can be sure that they will be able to understand each other.
Connect Your PC and ...
No need for special programming tools. Download our Free Roborun+ PC Utility and start exploring the possibilities!
Always Ready for the Unexpected
Brushless motor controllers work by creating a rotating magnetic field inside the motor’s coils. The rotor’s magnets then follow to cause rotation. In addition to the common, coarse, 6-step Trapezoidal rotation, Roboteq’s controllers are capable of the more refined and quieter running 512-step Sinusoidal rotation. Thanks to advanced Field Oriented Control (FOC), the motor is always operating at optimal efficiency.
Never Loses its Cool
High power at low voltage means high current. High current means heat. And excessive heat means trouble! Ultra-high efficiency MOSFET field-effect transistors, high current terminals & wiring, and innovative cooling techniques are just some of the technologies Roboteq utilizes to make our controllers among the coolest running for their size.
Guaranteed Success and Satisfaction
Our controllers are among the most sophisticated on the market, but also the easiest to use thanks to detailed documentation, software tools and application examples. However, should you run into difficulties you can rest assured that you will get prompt and accurate answers from our superb Support team. After all, we can only succeed if you succeed!
Categories AC Induction Motor Controllers
SIM Family
Medium Power Dual Channel, AC Induction Motor Controllers. Advanced 32-bit technology, multiple connectivity options and scripting support. Up to 2 x 60A. Conduction cooling plate with ABS Plastic cover. Targeted at AGV and small electric vehicles.
FIM Family
Compact, Low Power Dual Channel, AC Induction Motor Controllers. Advanced 32-bit technology, multiple connectivity options and scripting support. Up to 2 x 30A. Conduction cooling plate with ABS Plastic cover. Targeted at AGVs and small electric vehicles.
HIM Family
Medium Power Dual Channel, AC Induction Motor Controllers. Advanced 32-bit technology, multiple connectivity options and scripting support. Up to 1 x 150A or 2 x 75A. Built in extruded aluminum case. Targeted at mobile robots and small electric vehicles.
GIM Family
Very High Power Single Channel, Feature Packed AC Induction Motor Controllers. Advanced 32-bit technology, multiple connectivity options and scripting support. Up to 300A. Several voltage options up to 96V. Heavy conduction cooling plate with ABS Plastic cover. Targeted at electric vehicles, personnel carriers, golf cars, materials handling equipment, electric boats, automated guided vehicles, agricultural robots and other high power applications.
