Journal ArticleDOI
A Medium-Voltage Motor Drive With a Modular Multilevel PWM Inverter
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TLDR
In this article, the authors describe the control and operating performance of a modular multilevel PWM inverter for a transformerless medium-voltage motor drive, where the inverter is prominent in the modular arm structure consisting of a cascaded stack of multiple bidirectional choppercells.Abstract:
This paper describes the control and operating performance of a modular multilevel PWM inverter for a transformerless medium-voltage motor drive. The inverter is prominent in the modular arm structure consisting of a cascaded stack of multiple bidirectional chopper-cells. The dominant ac-voltage fluctuation with the same frequency as the motor (inverter) frequency occurs across the dc capacitor of each chopper-cell. The magnitude of the voltage fluctuation is inversely proportional to the motor frequency. This paper achieves theoretical analysis on the voltage fluctuation, leading to system design. A downscaled model rated at 400 V and 15 kW is designed and built up to confirm the validity and effectiveness of the nine-level (17-level in line-to-line) PWM inverter for a medium-voltage motor drive.read more
Citations
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Journal ArticleDOI
Switching-Cycle State-Space Modeling and Control of the Modular Multilevel Converter
TL;DR: In this article, a new switching-cycle state-space model of the modular multilevel converter (MMC) is presented, on the basis of which unused switching states of this converter are explored and a corresponding new control method is proposed.
Journal ArticleDOI
Optimal Selective Harmonic Mitigation Technique on Variable DC Link Cascaded H-Bridge Converter to Meet Power Quality Standards
Mohammad Najjar,Amirhossein Moeini,Mohammad Kazem Bakhshizadeh,Frede Blaabjerg,Shahrokh Farhangi +4 more
TL;DR: In this paper, power quality standards for single and three-phase medium-voltage applications using selective harmonic mitigation-pulsewidth modulation in a cascaded H-bridge (CHB) converter are fulfilled.
Journal ArticleDOI
Control of Medium-Voltage AC Motor Drive for Wide Speed Range Using Modular Multilevel Converter
TL;DR: A control technique that regulates this fluctuation to a constant value at all speeds with rated load torque is presented and its performance has been analyzed and verified through experimental results in this paper.
Journal ArticleDOI
Single-phase multilevel inverter topologies with self-voltage balancing capabilities
TL;DR: Two new structures of single-phase hybrid multilevel inverter are proposed for both symmetrical and asymmetrical configurations that can be employed in drives and control of electrical machines and connection of renewable energy sources.
Journal ArticleDOI
Multifunctional Megawatt-Scale Medium Voltage DC Test Bed Based on Modular Multilevel Converter Technology
Michael Steurer,Karl Schoder,Omar Faruque,Dionne Soto,M. Bosworth,Michael Sloderbeck,Ferenc Bogdan,John Hauer,Manfred Winkelnkemper,Lukas Schwager,Pawel Blaszczyk +10 more
TL;DR: In this paper, a modular multilevel converters (MMC) power hardware-in-the-loop laboratory for all-electric ship design and offshore wind farms is presented.
References
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Journal ArticleDOI
Instantaneous Reactive Power Compensators Comprising Switching Devices without Energy Storage Components
TL;DR: In this paper, a new instantaneous reactive power compensator comprising switching devices is proposed, which requires practically no energy storage components, and is based on the instantaneous value concept for arbitrary voltage and current waveforms.
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Instantaneous power theory and applications to power conditioning
TL;DR: The p-q theory in three-phase, four-wire Shunt Active Filters as discussed by the authors has been applied to power flow control in power electronics equipment and has been shown to be useful in many applications.
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High-Power Converters and AC Drives
TL;DR: In this article, the authors present a model for high-power switchings with SCR rectifiers and demonstrate how to use SCR Rectifiers to control high power switchings.
Journal ArticleDOI
Control and Experiment of Pulsewidth-Modulated Modular Multilevel Converters
Makoto Hagiwara,Hirofumi Akagi +1 more
TL;DR: In this article, two types of pulsewidth-modulated modular multilevel converters (PWM-MMCs) with focus on their circuit configurations and voltage balancing control are investigated.
Journal ArticleDOI
Active Harmonic Filters
TL;DR: This paper deals with general pure active filters for power conditioning, and specific hybridactive filters for harmonic filtering of three-phase diode rectifiers.
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