Calnetix Technologies has developed and deployed advanced Magnetic Bearing Controllers (MBCs) that contain all the necessary elements to operate a magnetic bearing system. Due to the integration of the magnetic bearing and drive control, Calnetix’s magnetic bearing controller is ideally suited to drive permanent magnet motors and generators.
Calnetix’s industry-leading magnetic bearing controllers are extremely compact and efficient despite providing all the required electrical and processing power for a typical system. Our MBC features remote connectivity capabilities and allows remote monitoring and diagnostics.
Although there are similarities between magnetic and conventional bearings, the use of active control allows a magnetic bearing system to incorporate many desirable features that are just not possible for conventional bearing systems. A few of the many features available in Calnetix’s MBCs include:
Calnetix currently produces two different MBC platforms in the Insight™ series and one in the Concurrence™ series. MBCs are classified by amplifier reactive power. For instance, the Insight™ 3600 has an amplifier capacity of 3600 V-A per channel and the Concurrence™ 9600 has an amplifier capacity of 9600 V-A per channel. As machine size or dynamic force requirements increase, the required amplifier capacity increases. The digital signal processor is the same across all MBC platforms regardless of size or speed of the machine. Of course, the control algorithm (compensator) is different for the different machines, so the parameter file that defines the compensator is installed in the MBC flash memory using the Calnetix Service GUI. The three Calnetix MBCs are shown and described below.
Bearing driven by controller: PM-biased homopolar
Input voltage: 144 VDC
Maximum continuous current output: 3 A
Amplifier current rating: 6 A
Bus voltage: 144 VDC
Cooling method: Liquid (cold plate)
Dimensions: 10x8x3 inches
How A Magnetic Bearing Controller Works
How Magnetic Bearings Work
Advantages of Magnetic Bearings
Transient Simulation of Magnetic Bearing and Backup Bearing Interaction in a High Speed Rotary Atomizer Subjected to Impulsive Loads
An Enhanced Dynamic Model for the Actuator/amplifier Pair in AMB Systems