An Energy-Based Controller for HVDC Modular Multilevel Converter in Decoupled Double Synchronous Reference Frame for Voltage Oscillation Reduction

Bergna-Diaz, Gilbert; Berne, E.; Egrot, Philippe; Lefranc, Pierre; Arzandé, Amir; Vannier, J-C; Molinas, Marta

doi:10.1109/tie.2012.2225397

Cited by 236 publications

(108 citation statements)

References 24 publications

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“…Table IV shows the calculated respective components using (20) and the results of the simulation. The double-line-frequency component is proportional to the product of the ac-side voltage and current in (20). As shown in Fig.…”

Section: Simulation Resultsmentioning

confidence: 99%

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Design and Control Method for Sub-module DC Voltage Ripple of HVDC-MMC

Gwon¹,

Park²,

Kang³

et al. 2016

Journal of Electrical Engineering and Technology

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-This paper proposes a design and control method for a high-voltage direction current modular multilevel converter (HVDC-MMC) considering the capacitor voltage ripple of the submodule (SM). The capacitor voltage ripple consists of the line frequency and double-line-frequency components. The double line-frequency component does not fluctuate according to the active power, whereas the line-frequency component is highly influenced by the grid-side voltage and current. If the grid voltage drops, a conventional converter increases the current to maintain the active power. A grid voltage drops, current increment, or both occur with a capacitor voltage ripple higher than the limit value. In order to reliably control an MMC within a limit value, the SM capacitor should be designed on the basis of the capacitor voltage ripple. In this paper, the capacitor voltage ripple according to the grid voltage and current are analyzed, and the proposed control method includes a current limitation method considering the capacitor voltage ripple. The proposed design and control method are verified through simulation using PSCAD/EMTDC.

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Section: Simulation Resultsmentioning

confidence: 99%

“…The difference in the arm capacitor voltage can be expressed as (20) from (19), and the capacitance of the SM capacitor can be also expressed as (21) from (19). Therefore, the SM capacitance is calculated by substituting the main circuit parameters (standard design specification) of the MMC in (21).…”

Section: Sm Capacitor Parameter Designmentioning

confidence: 99%

Design and Control Method for Sub-module DC Voltage Ripple of HVDC-MMC

Gwon¹,

Park²,

Kang³

et al. 2016

Journal of Electrical Engineering and Technology

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“…A number of studies on the MMC have been actively conducted for HVDC system applications [1]- [6]. Since the MMC is composed of many sub-modules (SMs) connected in series, the operation voltage and power rating can be easily raised by adding the number of SMs.…”

Section: Introductionmentioning

confidence: 99%

Improved Pre-charging Method for MMC-Based HVDC Systems Operated in Nearest Level Control

Kim¹,

Kim²,

Kim³

et al. 2017

Journal of Power Electronics

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Recently the researches on modular multi-level converter (MMC) are being highlighted because high quality and efficient power transmission have become key issues in high voltage direct current (HVDC) systems. This paper proposes an improved pre-charging method for the sub-module (SM) capacitor of MMC-based HVDC systems, which operates in the nearest level control (NLC) modulation and does not need additional circuits or pulse width modulation (PWM) techniques. The feasibility of the proposed method was verified through computer simulations for a scaled 3-phase 10kVA MMC with 12 SMs per each arm. Hardware experiments with a scaled prototype have also been performed in the lab to confirm the simulation results.

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“…A stack of multilevel inverter modules is designed for achieving low dv/dt characteristics, low switching losses low harmonics in the output voltage and current and better electromagnetic interference. Due to several advantages, multilevel inverters have been applied in various application fields [4]- [8].…”

Section: Introductionmentioning

confidence: 99%

A Novel Sixteen Switch Three-Phase Nine-Level Voltage Source Inverter

Satyamsetti¹,

Tenali²,

Kudupudi³

2017

IJET

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The cascaded multilevel inverter is developed by a number of single-phase H-bridge inverters and is categorized into symmetric and asymmetric based on the magnitude of the dc voltage sources. In the symmetric multilevel inverter, the magnitudes of the dc voltages are equal while, the asymmetric multilevel inverter, the values of the dc voltages are unequal. Recently, asymmetrical multilevel inverter and hybrid multistage topologies are becoming on of the most interested research area. This topology reduces the cost and size of the inverter and improves the reliability since minimum number of power electronic components, capacitors, and dc supplies used. The hybrid multistage converters consist of different multilevel configurations with unequal dc voltage supplies. With such converters, different modulation strategies and power electronic components technologies are needed [9]-[15].However, the purpose of improving the performance of the conventional single and three-phase inverters, different topologies employed with different types of bidirectional switches has presented. By comparing the unidirectional and bidirectional switches, bidirectional switch is capable to conduct the current and withstanding the voltage in two-directions. For achieving the higher voltage levels, bidirectional switches with an appropriate modulation technique can improve the performance of voltage source inverter in terms of reducing the semi-conductor components and minimizing the withstanding voltages. Based on the technical background, this paper suggests a novel topology for a three-phase nine-level voltage source inverter with sixteen switches. Also extended structure for N-level is presented and compared by different trending topologies. II. PROPOSED TOPOLOGY A. ModellingThe proposed nine level voltage source inverter consists three-bidirectional switches (S1-S6), two diodes (Da1-Da2), are added to the conventional three-phase two-level bridge (Q1-Q6) as shown in Fig.1. The function of these bidirectional switches is to block the higher voltage and ease current flow to and from the midpoint (o). There by VSI is fed with a fixed voltage of 4Vdc and two cascaded bridges are fed with to unequal voltages Vdc and 2Vdc are connected to (+, -, o) terminals. Hence the presented VSI is functioned to generate nine equal and different voltage levels, the power circuit of the cascaded H-bridge makes use of two series cells having unequal voltage supplies. In each cell two switches are turned On and OFF under inverted conditions to output two voltage levels.

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An Energy-Based Controller for HVDC Modular Multilevel Converter in Decoupled Double Synchronous Reference Frame for Voltage Oscillation Reduction

Cited by 236 publications

References 24 publications

Design and Control Method for Sub-module DC Voltage Ripple of HVDC-MMC

Design and Control Method for Sub-module DC Voltage Ripple of HVDC-MMC

Improved Pre-charging Method for MMC-Based HVDC Systems Operated in Nearest Level Control

A Novel Sixteen Switch Three-Phase Nine-Level Voltage Source Inverter

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