A carrier-based PWM method for three-phase four-leg voltage source converters

Kim, Jang-Hwan; Sul, Seung-Ki

doi:10.1109/tpel.2003.820559

Cited by 232 publications

(98 citation statements)

References 14 publications

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“…Вона ведеться у двох напрямках -збільшенні ефективності процесу компенсації, що в основному визначається інерційністю алгоритму керування, та у пошуку ефективних та компактних методів опису складових потужності електричної мережі. На даний момент широко використовується p-q теорія миттєвої потужності, запропонована Аkаgі [3] та ряд інших теорій [4][5][6][7][8].…”

Section: вступunclassified

Features of compensation of a instantaneous reactive power in linear circuits at the transient mode and switched on load

Zhuikov¹,

Verbytskyi²,

Bondarenko³

2017

Electronics and Communications

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Section: вступunclassified

Features of compensation of a instantaneous reactive power in linear circuits at the transient mode and switched on load

Zhuikov¹,

Verbytskyi²,

Bondarenko³

2017

Electronics and Communications

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“…The carrier-based pulse width modulation (PWM) technique is selected to produce three output voltages independently because of its simplicity and ease of implementation [23]. Since the four-leg inverter is assumed to be powered by an ideal constant DC voltage source, no controller is needed to regulate the DC-link voltage, and it is possible to consider that the DC-link voltage is constant throughout this study [5].…”

Section: System Modelingmentioning

confidence: 99%

An Improved Control Strategy for a Four-Leg Grid-Forming Power Converter under Unbalanced Load Conditions

Miveh

Rahmat

Mustafa

et al. 2016

Advances in Power Electronics

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This paper proposes an improved multiloop control strategy for a three-phase four-leg voltage source inverter (VSI) operating with highly unbalanced loads in an autonomous distribution network. The main objective is to balance the output voltages of the four-leg inverter under unbalanced load conditions. The proposed control strategy consists of a proportional-integral (PI) voltage controller and a proportional current loop in each phase. The voltage controller and the current control loop are, respectively, used to regulate the instantaneous output voltage and generate the pulse width modulation (PWM) voltage command with zero steady-state tracking error and fast transient response. A voltage decoupling feedforward path is also used to enhance the system robustness. Since the outer voltage loop operates in the synchronous reference frame, tuning and stability analysis of the PI controller is far from being straightforward. In order to cope with this challenge, the stationary reference frame equivalent of the voltage controller in the rotating frame is derived. Subsequently, a systematic design based on a frequency response approach is provided. Simulation results are also carried out using the DIgSILENT PowerFactory software to verify the effectiveness of the suggested control strategy.

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“…The most common and effective solution, adopted in this paper, is based on the following relationship [16] …”

Section: Modulation Indexs Calculationsmentioning

confidence: 99%

Predictive control for active split DC-bus 4-leg inverters

Bifaretti

Pipolo

Lidozzi

et al. 2016

2016 IEEE Energy Conversion Congress and Exposition (ECCE)

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-This paper proposes a Predictive Control, formally Dead-Beat (DBC), for a four-leg inverter having an Active Split DC-bus on the fourth leg and LC filters on phase-to-neutral outputs. Such a configuration permits to reduce the voltage ripple on the neutral point connected to inverter grounding. As only few control techniques have been investigated for Active Split DC-bus, the paper proposes to investigate the performance of DBC, which has been widely used for other power electronics applications. The main advantage of DBC over the classical PI or Resonant controller is that no tuning is required for control loop, while obtaining very fast transient response as well it can handle general constrained nonlinear systems with multiple inputs and outputs in a unified and clear manner. These features are highly valuable in power electronic converters used to supply the electrical utility loads in micro-grids. However, one of the main drawback of the DBC is the limited capabilities on harmonics compensations required when supplying unbalanced and non-linear loads. The paper presents continuous-time and discrete-time models of DBC applied to a four-leg VSI with Active Split DC-bus, highlighting the performance through simulation results as well as experimental tests.

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A carrier-based PWM method for three-phase four-leg voltage source converters

Cited by 232 publications

References 14 publications

Features of compensation of a instantaneous reactive power in linear circuits at the transient mode and switched on load

Features of compensation of a instantaneous reactive power in linear circuits at the transient mode and switched on load

An Improved Control Strategy for a Four-Leg Grid-Forming Power Converter under Unbalanced Load Conditions

Predictive control for active split DC-bus 4-leg inverters

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