Adaptive Carrier-based PWM for a Four-Switch Three-Phase Inverter under DC-link Voltage Ripple Conditions

Nguyen, Tan-Tien; Lee, Hong‐Hee; Nguyen, Hoang Minh

doi:10.5370/jeet.2010.5.2.290

Cited by 10 publications

(7 citation statements)

References 10 publications

(10 reference statements)

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“…In addition, since the neutral point of the capacitor at the DC side of inverter topology is directly connected to the load, the phase current passing through the capacitor will lead to voltage oscillation at the neutral point. The oscillation may shift the basic voltage vector, destroy SVPWM modulation, and ultimately aggravate the inverter output performance [23][24][25][26][27]. Consequently, the neutral point voltage oscillation of SVPWM needs to be compensated.…”

Section: Fig 2 Reconfigured Topology Under Leg a Faultmentioning

confidence: 99%

A Unified SVPWM Fault Tolerant Control Algorithm for Single Leg Fault Reconstruction Topology of Two-level Inverter

Cai,

2024

Preprint

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To improve the reliability of Two-level three phase voltage source inverters, a uniform fault tolerant strategy based on space vector pulse width modulation is proposed for different leg faults. The reconstructed topologies of inverters with different bridge arm faults are different, which makes the basic voltage vector phase of each reconstructed topology inconsistent, resulting in different calculations. Therefore, the coordinate transformation is applied to place the basic voltage vectors of each reconstructed topology on the synchronous stationary αβ coordinate system so that the calculations of the reconstructed topology under different bridge arm faults are unified, thus reducing the complexity of fault-tolerant control. Aiming at the three-phase current asymmetry caused by the neutral point voltage oscillation in inverter topology reconstruction, a transient compensation method of neutral point voltage offset for the α-axis component of the reference voltage vector is introduced to suppress the adverse effects. The compensation method directly offers a neutral point voltage offset value after Clarke transformation and corrects the α-axis component of the reference voltage vector, avoiding the integral calculation in the conventional voltage compensation algorithm. The correctness and effectiveness of the proposed fault-tolerant control strategy are verified experimentally.

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Section: Fig 2 Reconfigured Topology Under Leg a Faultmentioning

confidence: 99%

A Unified SVPWM Fault Tolerant Control Algorithm for Single Leg Fault Reconstruction Topology of Two-level Inverter

Cai,

2024

Preprint

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“…This condition would arise if any of the voltage vectors has a larger magnitude which is highlighted through space vector diagram in Figure 7. To mitigate these effects, addition of larger dc-link capacitors provides the best possible solution but leads to large and heavy dc-link filter with a sluggish response and elevated cost (Salcone and Bond, 2009;Hee et al, 2009;Nguyen et al, 2010). Smaller value of the DC link capacitors leads to the unbalanced dc-link voltages i.e., Vdc1#Vdc2 and the permutation of the switching states leads to the four voltage vectors with changes in both amplitude and angular position.…”

Section: Impact Of DC Link Capacitormentioning

confidence: 99%

Comparative Analysis based on Simulation & Design Aspects of Three Phase Four Switch Inverter for Industrial Applications

Ghosh

Swarnkar

Deshpande

2019

Int J Math, Eng, Manag Sci

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The industrial and utility sector perceives a shift in the paradigm of technology moving with at a very fast pace with the advent of applications like AC drives, FACTS devices, uninterruptible power supplies and many more. These applications are based on power electronics utilizing voltage source inverters (VSIs) dependent technology. The VSI based applications embodies some of the most pertinent and corroborated up gradation to cater the new challenges existing today. The essence of this paper is to draw attention towards benefits and limitations of using four switch three phase voltage source inverter (FSTPVSI) and present a comparative analysis based on technical, economical and performance parameters with six switch three phase voltage source inverter (SSTPVSI) for industrial applications. Finally, after visualizing the wide scope of research in the field of FSTPVSI, an effort has been made to simulate the both FSTPVSI & SSTPVSI using SIMULINK environment. Numerous design aspects based on technical and economic aspects demonstrate that by slightly modifying the pulse width modulation technique comparable results can be achieved from FSTPVSI topology.

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“…This strategy is of interest to the authors of [3][4][5][6][7][8][9][10][11]. The final power inverter structure is shown in Figure 1.…”

Section: S3p Inverter Configuration and Operationmentioning

confidence: 99%

“…On the other hand, the motor phase currents [10]. That voltage fluctuation and offset are caused by the third load current alternative and direct component which flow through capacitors that are exploited to create a fixed power supply mid-point.…”

Section: Introductionmentioning

confidence: 99%

Four-Switch Three-Phase PMSM Converter with Output Voltage Balance and DC-Link Voltage Offset Suppression

et al. 2017

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High power quality, efficiency, complexity, size, cost effectiveness and switching losses of the direct current to alternating current (DC-AC) conversion system are crucial aspects in industrial applications. Therefore, the four-switch three-phase inverter (4S3P) has been proposed as an innovative inverter design. However, this topology has been known to have many performance limitations in the low-frequency region, because of the generation of an unbalanced voltage leading to an unbalanced current due to the fluctuation and offset of the centre tap voltage of the DC-link capacitors. Those drawbacks are investigated and solved in this paper in order to provide pure sinusoidal output voltages. The generated output voltages are controlled using proportional-integral (PI) controllers to follow the desired voltages. Furthermore, the DC-link capacitor voltage offset is mitigated by subtracting the direct component from the control reference voltage using low pass filters, where this direct voltage component provides the direct current component which leads to DC-link capacitor voltage divergence. A simulation model and experimental setup are used to validate the proposed concept. Many simulation and experimental results are carried out to show the effectiveness of the proposed control scheme.

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Adaptive Carrier-based PWM for a Four-Switch Three-Phase Inverter under DC-link Voltage Ripple Conditions

Cited by 10 publications

References 10 publications

A Unified SVPWM Fault Tolerant Control Algorithm for Single Leg Fault Reconstruction Topology of Two-level Inverter

A Unified SVPWM Fault Tolerant Control Algorithm for Single Leg Fault Reconstruction Topology of Two-level Inverter

Comparative Analysis based on Simulation & Design Aspects of Three Phase Four Switch Inverter for Industrial Applications

Four-Switch Three-Phase PMSM Converter with Output Voltage Balance and DC-Link Voltage Offset Suppression

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