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Three-phase three-level one-cycle controlled bidirectional ac-dc neutral-point-clamped converter without having voltage sensors

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Title Three-phase three-level one-cycle controlled bidirectional ac-dc neutral-point-clamped converter without having voltage sensors
 
Creator GHODKE, AA
CHATTERJEE, K
 
Subject FREQUENCY INTEGRATION CONTROL
POWER-FACTOR CORRECTION
MULTILEVEL CONVERTERS
PWM RECTIFIER
INVERTERS
DESIGN
VECTOR
 
Description A three-phase three-level bidirectional ac-dc neutral-point-clamped converter (3 L-NPC) based on one-cycle control (OCC) is proposed in this study. It ensures that the 3 L-NPC converter operates stably during inverting mode of operation. A neutral point potential regulator is also presented which adds a dc offset to the three-phase modulating signals to nullify the deviation in the neutral point potential. First, a one-cycle controlled (OCC) 3 L-NPC converter which requires the sensing of instantaneous phase voltages of the utility is presented. Subsequently, a modified version of the OCC-based 3 L-NPC converter which does not requires sensing of the instantaneous phase voltages is proposed. The modified OCC-based 3 L-NPC estimates instantaneous phase voltages of the source from the pulse width modulation (PWM) switching sequence of the converter. The viability of the schemes is confirmed through a detailed simulation and experimental studies.
 
Publisher INST ENGINEERING TECHNOLOGY-IET
 
Date 2014-12-28T15:07:55Z
2014-12-28T15:07:55Z
2014
 
Type Article
 
Identifier IET POWER ELECTRONICS, 7(8)2161-2172
1755-4535
1755-4543
http://dx.doi.org/10.1049/iet-pel.2013.0788
http://dspace.library.iitb.ac.in/jspui/handle/100/16832
 
Language English