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Measuring with only one current sensor all the load currents in a multiple drive system based on a two-stage direct power electronic conversion topology
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| Author(s) |
C. Klumpner; F. Blaabjerg |
| Abstract |
A two-stage multi-drive Direct Power Conversion (DPC) topology suited for multi-drive application is
proposed, having an input port for a three-phase power supply and several output ports to connect
three-phase loads, which are independently controlled. This has similar behavior as a matrix converter
with no need of energy storage components (electrolytic capacitors) in the main power flow path, sine
wave in and sine wave out operation and the same disadvantage of a voltage transfer ratio lower than
unity. This is a cost effective topology compared to a standard matrix converter because the multiple
loads share the cost of the controlled rectification stage. A new technique to produce the command
signals for the power switches is proposed, making it possible to measure with only one current
transducer mounted in the dc-link, the phase currents of all the separate loads. This technique is
validated by experiments on a realistic laboratory prototype. |
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| Filename: | EPE2003-PP0962 - Klumpner |
| Filesize: | 481 KB |
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| Type |
Members Only |
| Date |
Last modified 2003-10-30 by Unknown |
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