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Modeling and design of a neutral point voltage regulator for a three level diode clamped inverter using multiple carrier modulation
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| Author(s) |
A. Bendre; G. Venkataramanan; V. Srinivasan; D. Rosene |
| Abstract |
This paper presents the design and implementation of a novel neutral point voltage regulator for a
three level diode clamped multi level inverter, which uses a multiple carrier sine triangle modulator in
conjunction with a closed loop controller for neutral point regulation. Redundant state choices are
controlled via a continuous voltage offset that controls the dc current injection into the midpoint of the dc
bus. Small signal dynamic models are developed for closed loop regulators with this voltage offset as the
control variable. Besides maintaining dc bus voltage balance, a significant reduction is seen in the voltage
distortion at the neutral point when the regulator is used and this leads to a definitive reduction in the
required dc bus capacitance. Analytical, computer simulation and experimental results verifying the
approach are presented in the paper. |
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| Filename: | EPE2003-PP0973 - Bendre |
| Filesize: | 414.4 KB |
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| Type |
Members Only |
| Date |
Last modified 2003-10-23 by Unknown |
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