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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Proceedings ArticleDOI
Stability of grid-connected modular multilevel converter with open- and closed-loop ac-side control
Mebtu Beza,Massimo Bongiorno +1 more
TL;DR: In this article, the stability of grid-connected modular multilevel converter (MMC) under two control strategies is studied and the ac-side input admittance of the MMC is derived under open and closed-loop control strategies.
Proceedings ArticleDOI
Analysis and Optimized Control of MMC under Asymmetric Arm Parameter Conditions
Peng Dong,Jing Lyu,Xu Cai +2 more
TL;DR: An optimized control method of arm capacitor voltage is proposed, which can keep the terminal behavior of MMC unaffected by the circulating current, and experimental results verify the effectiveness of the theoretical analysis and the proposed control strategy.
Proceedings ArticleDOI
On Extending the Overloading Capability of Modular Multilevel Converter
TL;DR: Simulation results show that the MMC can sustain long term overload when operated within the scope of its electrical and thermal operating regions and can also provide additional short term overload When operated at the margins of these regions.
Journal ArticleDOI
Speed Control of Three-Phase Induction Motor Employing a Modular Multilevel Inverter Under Normal and Fault Tolerant Conditions
TL;DR: In this paper, a modular multilevel inverter is employed as an induction motor drive with capability of operation under normal and faulty conditions, and different switching scenarios have been defined for each switch under faulty conditions.
Proceedings ArticleDOI
A model for a three-phase Modular Multi-level Converter based on Inductive Power Transfer technology (M2LC-IPT)
TL;DR: In this article, a modified M2LC topology based on Inductive Power Transfer (IPT) technology is proposed to maintain the capacitor voltage of each module within a narrow band around the nominal value to minimize circulating currents.
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.
Book
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.
Book
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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