Common-mode voltage reduction of three level four leg PWM converter

Chee, Seung-Jun; Kim, Hyeon-Sik; Sul, Seung-Ki; Ko, Saebom

doi:10.1109/ecce.2014.6953393

Cited by 6 publications

(4 citation statements)

References 19 publications

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“…The three-level SVPWM algorithm draws on the concept of space vector in motor control and uses the principle of voltsecond balance to synthesize voltage vectors. Compared with the SPWM algorithm, it has the advantages of large voltage utilization, low harmonics contained in the output voltage, and effective suppression of midpoint potential drift, so it is widely used [4][5][6][7] .…”

Section: Three-level Svpwm Control Strategymentioning

confidence: 99%

Optimization of inventor control strategy for ship hybrid propulsion

Tian,

Chen,

Yang

2023

Fourth International Conference on Artificial Intelligence and Electromechanical Automation (AIEA 2023)

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Compared with pure electric ship, hybrid ship has better endurance and redundancy; at the same time, compared with traditional ship in which diesel generators are the single driving force, it has lower fuel consumption, lower pollution, less noise and so on. In order to improve the efficiency and stability of the ship to control the hybrid drive, a control strategy which has a hybrid drive power control based on bi-directional DC-DC and the three-level SVPWM had been designed, then was simulated and analysed by MATLAB/Simulink. The results of simulation show that the utilization of energy to a certain extent was enhanced.

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Section: Three-level Svpwm Control Strategymentioning

confidence: 99%

Optimization of inventor control strategy for ship hybrid propulsion

Tian,

Chen,

Yang

2023

Fourth International Conference on Artificial Intelligence and Electromechanical Automation (AIEA 2023)

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“…However, additional transformers increase the overall costs and volume of the power converter. In general, there are two ways to provide zero-sequence current without transformers: a three-phase four-wire inverter with split DC-link capacitors, and a threephase four-leg inverter (TPFLI) [6] ˗ [11]. On the one hand, the topology of three-phase four-wire inverter with split DClink capacitors divides the DC-link capacitors in series and connects a neutral line to the midpoint of the capacitors.…”

Section: Introductionmentioning

confidence: 99%

“…However, TPFLI has a high switching loss due to the additional switches as shown in Fig. 1 [8] ˗ [11]. Since TPFLI has 16 switching states due to the addition of a fourth leg, various modulation methods have been proposed to generate the unbalanced phase voltage of the inverter [12]˗ [19].…”

Section: Introductionmentioning

confidence: 99%

Minimum Loss Discontinuous Pulse-Width Modulation Per Phase Method for Three-Phase Four-Leg Inverter

2020

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The three-phase four-leg inverter (TPFLI) provides unbalanced voltage to a load or injects unbalanced current to a grid to compensate unbalanced current. However, it has a high switching loss because of the fourth leg. This paper presents a discontinuous pulse-width modulation (DPWM) method that minimizes the per-phase switching loss of the TPFLI. The discontinuous three-dimensional spacevector pulse-width modulation (3D SVPWM) can be implemented in the TPFLI by injecting the same offset voltage as the conventional DPWM of three-phase three-leg inverter (TPTLI). However, the conventional DPWM is unsuitable for TPFLI because of its unbalanced current. We demonstrate that the discontinuous phase can be chosen according to the offset direction when a voltage reference vector is specified. Based on this result, a new per-phase minimum-loss discontinuous PWM strategy is developed and compared with the conventional DPWM. This method can also be applied to the TPTLI and implemented by injecting an offset voltage generated using the inverter phase voltage reference and phase current. Furthermore, the lifespan of a TPFLI can be extended by preventing deterioration of a specific leg. The validity of the proposed method is verified through simulation and experiments. INDEX TERMS Discontinuous pulse width modulation (DPWM), three-dimensional space vector pulse width modulation (3D SVPWM), three-phase four-leg inverter, switching loss

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“…On top of that, multi-objective control such as minimisation of reactive power is only possible by adding an additional cascade of PI controller which may increase the complexity of the tuning and the computational burden. In [15][16][17], a PWM scheme has been proposed. Unlike conventional PWM, the control of zero-sequence current is quite complex.…”

Section: Introductionmentioning

confidence: 99%

Experimental evaluation of model predictive current control for a modified three‐level four‐leg indirect matrix converter

Basri

Mekhilef

2017

IET Electric Power Applications

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This study presents an experimental validation and robustness evaluation of predictive current control and reactive power minimisation strategy for a three-level three-phase four-wire indirect matrix converter. The proposed topology features a unification of conventional four-leg indirect matrix converter with an additional four switches circuit resembling a back-to-back buck circuit to synthesise multi-level variable dual dc-link voltage. A systematic rectifier switching strategy is elaborated to ensure positive fictitious dc-link voltage at any instant. The proposed control and topology have been tested under various transient and steady-state conditions for comprehensive robustness evaluation. The experimental results reveal an outstanding independent load current reference tracking with low ripple current and the reactive power minimisation has been achieved by tuning the weighting factor. The load current tracking and reactive power minimisation have been achieved by properly tuning the weighting factor. The load current harmonics distortion is recorded <5% during normal operating conditions.

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Common-mode voltage reduction of three level four leg PWM converter

Cited by 6 publications

References 19 publications

Optimization of inventor control strategy for ship hybrid propulsion

Optimization of inventor control strategy for ship hybrid propulsion

Minimum Loss Discontinuous Pulse-Width Modulation Per Phase Method for Three-Phase Four-Leg Inverter

Experimental evaluation of model predictive current control for a modified three‐level four‐leg indirect matrix converter

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