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Three-Level Rectifier Fed Four-Level Inverter for Electric Drives
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| Author(s) |
Nikolay Lopatkin, Gennady Zinoviev, Alex Usachev, Helmut Weiss |
| Abstract |
A special four-level three-phase diode clamped
inverter fed by a correspondingly adapted untypical threephase
rectifier with two typical transformers is presented.
The three-level rectifier is formed by consecutive connection
of three rectifiers under the circuit of Scott for the bi-phase
orthogonal voltage received from corresponding windings of
two three-phase transformers. The inverter is realized by
4,5kV IGBT modules and provides a voltage of 6 kV (RMS)
for a high power induction machine without transformer.
The dependences of THD and integral values of THD of
output voltage are simulated and shown for simple variants
of three-carriers PWM and SVM. |
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| Filename: | T2-313.pdf |
| Filesize: | 268.4 KB |
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| Type |
Members Only |
| Date |
Last modified 2007-03-08 by System |
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