Comparative study on different five level inverter topologies

Devi, K. Suganya; Arun, S.; Sreeja, C.

doi:10.1016/j.ijepes.2014.05.053

Cited by 16 publications

(4 citation statements)

References 10 publications

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“…The switching frequency of the devices must be larger than the LC resonant frequency. Hence, the resonant will behave as an inductive element [26]. The passive elements C r and L r used on the simulation analysis are 10 μf and 10 μH, respectively, while the balancing half-bridges are switched at 30 kHz.…”

Section: Comparison With Other Balancing Methodologiesmentioning

confidence: 99%

An Improved SVPWM Control of Voltage Imbalance in Capacitors of a Single-Phase Multilevel Inverter

Ramirez¹,

Arjona²

2015

Journal of Power Electronics

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This paper presents a modified Space Vector Pulse Width Modulation Technique (SVPWM), which solves the well-known problem of voltage imbalance in the capacitors of a single-phase multilevel inverter. The proposed solution is based on the measurement of DC voltage levels at each capacitor of the inverter DC bus. The measurements are then used to adjust the size of the active vectors within the SVPWM algorithm to keep the voltage waveform sinusoidal regardless of any voltage imbalance on the DC link capacitors. When a voltage deviation exceeds a predetermined hysteresis band, the correspondent voltage vector is restricted to restore the voltage level to an acceptable threshold. Hence, the need for external voltage regulators for the voltage capacitors is eliminated. The functionality of the proposed algorithm is successfully demonstrated through simulations and experiments on a grid tied application.

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Section: Comparison With Other Balancing Methodologiesmentioning

confidence: 99%

An Improved SVPWM Control of Voltage Imbalance in Capacitors of a Single-Phase Multilevel Inverter

Ramirez¹,

Arjona²

2015

Journal of Power Electronics

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“…Therefore, it is a preferred solution for medium-high voltage or high-power electrical drives applications. Several topologies of multilevel inverters have been proposed in the specialized literatures [6]. Among these topologies, diodeclamped inverter (DCI) represents one of the most interesting solutions to increase voltage and power levels and to achieve high quality voltage waveforms.…”

Section: Introductionmentioning

confidence: 99%

Five-level Direct Torque Control with Balancing Strategy of Double Star Induction Machine

Benyoussef

Barkat

2020

International Journal of Systems Applications, Engineering &Amp; Development

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This work relates to the study of direct torque control of the double star induction machine drive fed by two five-level diode-clamped inverters. The analysis of the three-phase direct torque control shows that this concept can be extended easily to double star induction machine even when it is fed by a multilevel inverter. Diode-clamped inverter, as one of the prominent multilevel inverters, has several advantages like high voltage and low current waveform distortion. However, it suffers from the problem of neutral point potential variation. The variation causes an unbalance in the DC-link voltage levels and increases consequently the current waveform distortion. This problem can be solved in satisfactory way by using multilevel direct torque control equipped by a balancing strategy. The simulation results, illustrating the steady state and dynamic performances, prove the effectiveness of the proposed control approach.

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“…They provide higher power quality at the AC side, can operate at higher AC voltage levels and minimize or even eliminate the interface transformer and reduce switching losses . Generally, multilevel VSC can be divided into various topologies such as neutral point clamped (NPC), flying capacitor Cascade H‐Bridge, and modular multilevel converters (MMC) . Recently, a new topology called T‐type was proposed as a potential alternative to NPC structure.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, a new topology called T‐type was proposed as a potential alternative to NPC structure. This converter merges the merit to operate at reduced conduction losses and the well‐known advantages of multilevel converters . Compared to the NPC and MMC topologies, T‐type topology presents fewer semiconductors, which leads to a cost‐effective multilevel structure .…”

Section: Introductionmentioning

confidence: 99%

Virtual flux direct power-backstepping control of 5-level T-type multiterminal VSC-HVDC system

Berra

Barkat

Bouzidi

2017

Int Trans Electr Energ Syst

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Summary In this study, a nonlinear control of a 5‐level T‐type converter topology‐based multiterminal voltage source converter high‐voltage direct current system is proposed. The idea of the proposed control is to combine the backstepping control and direct power control with virtual flux concept into one controller able to improve the performance of the transmission system. In the other side, the use of a 5‐level space vector modulation with a balancing strategy based on effective use of the redundant switching states of the converters voltage vectors guarantees the objective of maintaining balanced voltages in DC‐capacitors. Finally, simulations of the 5‐level T‐type multiterminal voltage source converter high‐voltage direct current system validate the effectiveness of the proposed control law. The obtained results are compared with those performed by a conventional Proportional Integrator (PI) controller. These outcomes allow to exhibit excellent transient response during a range of operating conditions.

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Comparative study on different five level inverter topologies

Cited by 16 publications

References 10 publications

An Improved SVPWM Control of Voltage Imbalance in Capacitors of a Single-Phase Multilevel Inverter

An Improved SVPWM Control of Voltage Imbalance in Capacitors of a Single-Phase Multilevel Inverter

Five-level Direct Torque Control with Balancing Strategy of Double Star Induction Machine

Virtual flux direct power-backstepping control of 5-level T-type multiterminal VSC-HVDC system

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