Abstract
In this paper active control of flexural rotor vibration in electrical
machines is examined. We consider attenuation of discrete low-frequency
range forced vibration components by means of an adaptive harmonic
control strategy. A built-in force actuator for actively generating
force on the machine rotor is investigated. Previously, such an actuator
has mainly been used in bearingless machine design for rotor
levitation. The action of the actuator is based on electromechanical
interaction between the rotor and the stator of the machine. A low-order
linear parametric state-space model is derived for the actuator–rotor
system. Parameter estimation is carried out using simulation data
obtained from a detailed two-dimensional time-stepping finite element
field-circuit model of the machine. Hence, model-based control design is
performed using the identified model. The controller is verified by
embedding it into the finite element analysis. As a result we present a
virtual plant of the machine with vibration control. The virtual plant
is introduced as a means of vibration control design prior to
implementing the control algorithms in a real machine. Simulation
results using real machine data and finite element time-stepping method
are presented.
| Original language | English |
|---|---|
| Pages (from-to) | 407 - 421 |
| Number of pages | 15 |
| Journal | Electrical Engineering |
| Volume | 90 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2008 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- vibration control
- rotordynamics
- electrical machines
- bearingless drives
- self-bearing machines
- electromechanics
- adaptive harmonic control
- force actuation
- unbalanced magnetic pull
- system identification
- evolution algorithms