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Synchronous Control of Cascaded Three-Level Inverters
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| Author(s) |
Valentin Oleschuk, Francesco Profumo, Alberto Tenconi, Alexandar Stankovic |
| Abstract |
Novel method of synchronous pulsewidth modulation
(PWM) has been disseminated for control of cascaded
neutral-point-clamped inverters feeding open-end winding
induction motor drive with single dc voltage source. Control
algorithms provide in this case full elimination of the
common-mode voltages both in each inverter and in the
load. Phase voltages of the drive system are characterised by
quarter-wave symmetry during the whole control range
including the zone of overmodulation, and its spectra do not
contain even harmonics and sub-harmonics (combined
harmonics). Simulations give the behaviour of the proposed
methods of synchronous PWM in these systems.
Continuous, discontinuous and “direct-direct” schemes of
synchronous PWM, applied for control of cascaded threelevel
converters, have been analysed and compared. |
| Download |
| Filename: | T3-213.pdf |
| Filesize: | 305.5 KB |
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| Type |
Members Only |
| Date |
Last modified 2007-03-08 by System |
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