Harmonic Analysis and Controller Design of 15 kV SiC IGBT-Based Medium-Voltage Grid-Connected Three-Phase Three-Level NPC Converter
Sachin Madhusoodhanan,Krishna Mainali,Awneesh Tripathi,Dhaval Patel,Arun Kadavelugu,Subhashish Bhattacharya,Kamalesh Hatua +6 more
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TLDR
In this article, the harmonic performance and current distortion of the grid-connected, three-level neutral point clamped converter using 15 kV silicon carbide Insulated Gate Bipolar Transistor (IGBTs) are investigated.Abstract:
Cascaded converters are generally used for medium-voltage (MV) grid-connected applications due to the limitation in the voltage rating of available silicon (Si) power devices. These converters find application in active power filters, STATCOM or as the active front end converters for solid state transformers at the distribution voltage levels. The high voltage wide bandgap semiconductor devices have enabled the grid connected operation of noncascaded converters. This results in high power density, less number of switching devices, and high efficiency for three-phase MV grid interface. This also results in control simplicity without the need for complex dc bus balancing algorithms otherwise needed for cascaded converters. However, such noncascaded, grid-connected converters introduce challenges in maintaining power quality at low currents. This paper investigates the harmonic performance and current distortion of the grid-connected, three-level neutral point clamped converter using 15 kV silicon carbide Insulated Gate Bipolar Transistor (IGBTs). A suitable control scheme for stable harmonic compensation is proposed. The challenges and control performance are explained through frequency domain analysis, simulations, and experimental validation on a developed prototype of the three-phase converter up to 4.16 kV, three-phase MV grid-connected operation.read more
Citations
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Journal ArticleDOI
State of the art of solid-state transformers: Advanced topologies, implementation issues, recent progress and improvements
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References
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Proceedings ArticleDOI
Design and comparison of 4.16 kV neutral point clamped, flying capacitor and series connected H-bridge multi-level converters
TL;DR: In this paper, the authors describe the design of a (4-kV, 4.16-MVA) three-level neutral-point-clamped-, threelevel flying-capacitor-, four-level flyingcapacitors-, and nine-level seriesconnected H-bridge voltage-source converter on the basis of state-of-the-art 6.5-, 4.5, 3.3-and 1.7kV bipolar transistors.
Journal ArticleDOI
Active Damping-Based Control for Grid-Connected $LCL$ -Filtered Inverter With Injected Grid Current Feedback Only
Jinming Xu,Shaojun Xie,Ting Tang +2 more
TL;DR: An AD method based on the feedback of the injected grid current has been proposed, which promises the satisfactory performance with both analog and digital implementations and the cost and the complexity are reduced while the reliability is improved.
Journal ArticleDOI
Simple digital control improving dynamic performance of power factor preregulators
TL;DR: In this article, the authors present the practical implementation of a fully digital control for boost power factor preregulators (PFPs), which is simple and fast and provides a significant improvement in the system's dynamic performance compared to the usual analog control techniques.
Proceedings ArticleDOI
10 kV, 120 A SiC half H-bridge power MOSFET modules suitable for high frequency, medium voltage applications
Mrinal K. Das,Craig Capell,David Grider,Scott Leslie,John Ostop,Ravi Raju,Michael Joseph Schutten,Jeffrey Joseph Nasadoski,Allen R. Hefner +8 more
TL;DR: The majority carrier domain of power semiconductor devices has been extended to 10 kV with the advent of SiC MOSFETs and Schottky diodes as mentioned in this paper.
Journal ArticleDOI
Small-Signal $z$ -Domain Analysis of Digitally Controlled Converters
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