Abstract
The work proposes a method for estimating the magnet temperature in permanent magnet synchronous machines (PMSM´s) under load conditions. The method implies an intermittent injection of a voltage pulse in the positive and negative d-axis of the motor. Thus, the difference of the resulting d-current responses depends on the machine operating point which is defined by the d-current, the q-current and the actual magnetization level of the permanent magnets. Since the magnetization of the magnets depends on the temperature,
different d-current slopes reflect different temperature levels of
the magnets. By applying a voltage pulse in the positive and
negative d-axis of the motor, symmetry of the induced voltages
can be achieved in a manner that the difference of the current
responses from the positive and negative pulse is to a great
extent speed independent.
| Original language | English |
|---|---|
| Title of host publication | USB Proceedings IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society |
| Pages | 1989-1994 |
| Number of pages | 6 |
| Publication status | Published - 2012 |
| Event | I38th Annual Conference of the IEEE Industrial Electronics Society- IECON 2012 - Duration: 24 Oct 2012 → 27 Oct 2012 |
Conference
| Conference | I38th Annual Conference of the IEEE Industrial Electronics Society- IECON 2012 |
|---|---|
| Period | 24/10/12 → 27/10/12 |
Research Field
- Not defined
Keywords
- Condition monitoring
- permanent magnet machines
- rotor temperature
- magnet temperature estimation
- saturation effects.