Modular Multilevel Inverter with New Modulation Method and Its Application to Photovoltaic Grid-Connected Generator

Mashino, Jun; Xiao, Bailu; Shen, Ke; Tolbert, Leon M.; Jian, Zhe

doi:10.1109/tpel.2013.2243758

Cited by 287 publications

(149 citation statements)

References 27 publications

Supporting

Mentioning

130

Contrasting

Unclassified

Order By: Relevance

“…In this entire system the input forgrid is given by Cascaded Multilevel inverter which converts DC output from DC-DC converter to AC supply for each phase of grid. If the output of Inverter is mismatch to the grid requirements then active power flow will get disturbs [6][7]. For example if a converter module having high active power generation then automatically that module will supply more AC supply to the grid this may cause degrade of power quality due to over modulation.…”

Section: Introductionmentioning

confidence: 99%

Active & Reactive power Control of Large scale Grid Connected PV system by Cascaded Modular Multi-Level Inverters withFuzzy Logic Control Approach

2017

IJMTER

View full text Add to dashboard Cite

Abstract-Due to its advantages like clean energy production and more abundance availability solar energy is the most concentrated topic from last 20 years. Grid connected PV system gaining its importance due to high demand of power across the globe. Now a days different topologies of Multilevel Inverters are developing. By using this multilevel inverters we can interface the PV systems with Grid easily and effectively. But PV system facing so many problems like power flow control and output voltage disturbances because PV systems produce irregular output voltages. This paper demonstrates the Cascade Multilevel inverter with Active and Reactive power control using Fuzzy logic control approach of for Grid Connected PV System. With the help of this model we can improve the performance of the total PV system. In this paper we proposed a 3-MW, 12-kV PV system with the Fuzzy Logic control strategy is modelled and simulated in MATLAB.

show abstract

Section: Introductionmentioning

confidence: 99%

Active & Reactive power Control of Large scale Grid Connected PV system by Cascaded Modular Multi-Level Inverters withFuzzy Logic Control Approach

2017

IJMTER

View full text Add to dashboard Cite

show abstract

“…Because the capacitor voltage balancing should be the most basic yet critical functionality of the MMC, various balancing techniques of the capacitor voltage have been discussed in [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Reference [1] deals with two types of pulse width modulated MMC (PWM-MMC), focusing on their circuit configurations and voltage balancing control.…”

Section: Introductionmentioning

confidence: 99%

Trade-Off Strategies in Designing Capacitor Voltage Balancing Schemes for Modular Multilevel Converter HVDC

Nam¹,

Kim²,

Kim³

et al. 2016

Journal of Electrical Engineering and Technology

View full text Add to dashboard Cite

-This paper focuses on the engineering trade-offs in designing capacitor voltage balancing schemes for modular multilevel converters (MMC) HVDC: regulation performance and switching loss. MMC is driven by the on/off switch operation of numerous submodules and the key design concern is balancing submodule capacitor voltages minimizing switching transition among submodules because it represents the voltage regulation performance and system loss. This paper first introduces the state-ofthe-art MMC-HVDC submodule capacitor voltage balancing methods reported in the literatures and discusses the trade-offs in designing these methods for HVDC application. This paper further proposes a submodule capacitor balancing scheme exploiting a control signal to flexibly interchange between the on-state and the off-state submodules. The proposed scheme enables desired performance-based voltage regulation and avoids unnecessary switching transitions among submodules, consequently reducing the switching loss. The flexibility and controllability particularly fit in high-level MMC HVDC applications where the aforementioned design trade-offs become more crucial. Simulation studies for MMC HVDC are performed to demonstrate the validity and effectiveness of the proposed capacitor voltage balancing algorithm.

show abstract

“…MMC-HVDC has a lot more advantages than two-level or three-level VSC-HVDCs, such as lower harmonic components at the Alternating Current (AC) side of the converter [4], greater reduction of the switching frequency, fewer losses [5] and operation consistency for the switching devices in series in an arm is not necessary [6]. There has been extensive research on MMC systems, and most of this research has been concentrated on mathematical modeling [7]- [9], modulation mode [10]- [12], and control strategies [13]- [16]. Physical verification plays an important role in testing control devices, planning the primary system and engineering operation, since it is closer to the practical project.…”

Section: Introductionmentioning

confidence: 99%

A Hardware-in-the-loop Platform for Modular Multilevel Converter Simulations

Liu¹,

Tian²,

Wang³

et al. 2016

Journal of Power Electronics

View full text Add to dashboard Cite

In this paper, a hardware-in-the-loop simulation platform for MMCs is established, which connects a real time digital simulator (RTDS) and a designed MMC controller with optical fiber. In this platform, the converter valves are simulated with a small time step of 2.5 microsecond in the RTDS, and multicore technology is implemented for the controller so that the parallel valve control is distributed between different cores. Therefore, the designed controller can satisfy the requirements of real-time control. The functions of the designed platform and the rationality for the designed controller are verified through experimental tests. The results show that different modulation modes and various control strategies can be implemented in the simulation platform and that each control objective can been tracked accurately and with a fast dynamic response.

show abstract

Modular Multilevel Inverter with New Modulation Method and Its Application to Photovoltaic Grid-Connected Generator

Cited by 287 publications

References 27 publications

Active & Reactive power Control of Large scale Grid Connected PV system by Cascaded Modular Multi-Level Inverters withFuzzy Logic Control Approach

Active & Reactive power Control of Large scale Grid Connected PV system by Cascaded Modular Multi-Level Inverters withFuzzy Logic Control Approach

Trade-Off Strategies in Designing Capacitor Voltage Balancing Schemes for Modular Multilevel Converter HVDC

A Hardware-in-the-loop Platform for Modular Multilevel Converter Simulations

Contact Info

Product

Resources

About