Highly integrated magnetic bearings
- ETH-Center, Zurich (Switzerland)
- Mecos Traxler AG, Winterthur (Switzerland)
Active Magnetic Bearings (AMB) have many advantages, compared to other bearing concepts. However, for many potential applications they are still too complicated and too expensive. In this paper the authors will present a new concept for active magnetic bearings with smaller dimensions, lower power consumption, and lower cost. To achieve this goal the system has been optimized in an overall mechatronic design. This led to new concepts for rotor, magnets, electronics and control. A single chip computer is used to reduce the number of electronic components. The switches of the voltage controlled power amplifier are driven directly by the PWM-unit of the single chip computer. Additionally, also the frequency inverter for the motor is driven directly by the PWM-unit. This leads to a minimum number of electronic components including the emergency power supply provided through energy recovered by the inverter. For development, calibration and error diagnostics a powerful serial link to a PC has been implemented. It works at a speed of 57.6 kBit/s and realizes a direct interface to MATLAB. This new configuration has been successfully applied to a small rotor system spinning at 60,000 rpm.
- OSTI ID:
- 390755
- Report Number(s):
- CONF-950852-; TRN: 96:005769-0013
- Resource Relation:
- Conference: 4. industrial conference and exhibition on applications of magnetic bearings, magnetic drives, and dry gas seals, Alexandria, VA (United States), 10-11 Aug 1995; Other Information: PBD: 1995; Related Information: Is Part Of Proceedings of the MAG `95 magnetic bearings, magnetic drives and dry gas seals conference & exhibition; PB: 384 p.
- Country of Publication:
- United States
- Language:
- English
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