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Iron Losses under Voltage Excitation by Novel and Classical Frequency Converters
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| Author(s) |
Juan Sagarduy, Anthony J. Moses, Fatih J Anayi, Jon C. Clare, Patrick W. Wheeler |
| Abstract |
Iron losses due to flux harmonics in stator
cores of Pulse-Width-Modulation [PWM] back -to-back
inverter-fed induction motors have a major effect on
system efficiency. A new generation of direct ac-ac
matrix converters offer important advantages over
classical frequency converters such as absence of
bulky and temperature sensitive dc-links and possible
adjustment of power factor. The paper presents
experimental results of magnetic losses in three nonoriented
electrical steels magnetised under different
types of voltage excitation. Characteristic waveforms
of real 3x3 matrix converter and PWM inverter under
various modulation indices were recorded and used
by a signal generator feeding a Single Strip Tester
[SST] used to measure iron loss. Harmonic distortion,
contribution of high frequency components and
sideband effect were analysed. Influence of flux
density curve as well as form factor of voltage
excitation were also investigated. |
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| Filename: | T2-301.pdf |
| Filesize: | 565.6 KB |
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| Type |
Members Only |
| Date |
Last modified 2007-03-08 by System |
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