Space Vectors Modulation for Nine-Switch Converters

Dehnavi, Seyed Mohammad Dehghan; Mohamadian, Mustafa; Yazdian, Ali; Ashrafzadeh, F.

doi:10.1109/tpel.2009.2037001

Cited by 121 publications

(34 citation statements)

References 17 publications

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“…These vectors compute the turn-on and turn-off states of each switch; the sectors or subsectors find the switching sequences and increase the n-level of the power inverter, which requires a microprocessor and complex algorithms. The limitation of SVM is that it needs a considerable amount of time to carry out fundamental calculations, thereby causing delays in the process [186]. To overcome this problem, a large value of system reactive components and advanced deadbeat control are used [187].…”

Section: Space Vector Pulse Width Modulationmentioning

confidence: 99%

Mitigation of Power Quality Issues Due to High Penetration of Renewable Energy Sources in Electric Grid Systems Using Three-Phase APF/STATCOM Technologies: A Review

et al. 2018

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Abstract:This study summarizes an analytical review on the comparison of three-phase static compensator (STATCOM) and active power filter (APF) inverter topologies and their control schemes using industrial standards and advanced high-power configurations. Transformerless and reduced switch count topologies are the leading technologies in power electronics that aim to reduce system cost and offer the additional benefits of small volumetric size, lightweight and compact structure, and high reliability. A detailed comparison of the topologies, control strategies and implementation structures of grid-connected high-power converters is presented. However, reducing the number of power semiconductor devices, sensors, and control circuits requires complex control strategies. This study focuses on different topological devices, namely, passive filters, shunt and hybrid filters, and STATCOMs, which are typically used for power quality improvement. Additionally, appropriate control schemes, such as sinusoidal pulse width modulation (SPWM) and space vector PWM techniques, are selected. According to recent developments in shunt APF/STATCOM inverters, simulation and experimental results prove the effectiveness of APF/STATCOM systems for harmonic mitigation based on the defined limit in IEEE-519.

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Section: Space Vector Pulse Width Modulationmentioning

confidence: 99%

Mitigation of Power Quality Issues Due to High Penetration of Renewable Energy Sources in Electric Grid Systems Using Three-Phase APF/STATCOM Technologies: A Review

et al. 2018

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“…The impracticality of this forbidden switching state is responsible for the limitations on the amplitudes and/or phase shifts and/or frequencies of the upper and lower outputs of nine-switch converter, which is discussed in detail in [23]- [26].…”

Section: Evaluation Of Nine-switch Convertermentioning

confidence: 99%

A Low Component Count Series Voltage Compensation Scheme for DFIG WTs to Enhance Fault Ride-Through Capability

Ambati¹,

Kanjiya²,

Khadkikar³

2015

IEEE Trans. Energy Convers.

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Fault ride-through (FRT) operation has been a challenge for the doubly fed induction generator (DFIG) based wind turbines (WTs) as the stator winding is directly connected to the grid. Additionally, several grid codes have been established for the grid interconnection of WTs, which demand the WT to stay connected and provide the predefined reactive current support to the grid during FRT operation. The series voltage compensation (SeVC) based FRT schemes for DFIG WTs outperforms all others in terms of smooth transient performance. However, such FRT schemes require an additional voltage-source converter (VSC) and a bulkier series transformer to provide the SeVC. This paper proposes a low component count SeVC scheme that is applicable to both individual WTs and wind parks to cope up with the recent grid codes requirements. The proposed configuration eliminates the need of a series transformer and an additional VSC for the SeVC operation with the use of three additional IGBTs/switches. Furthermore, a coordinated control strategy is proposed to control the WT that enhance its FRT capabilities. The proposed low component count FRT scheme and coordinated control strategy are validated using the detailed mathematical modeling and simulation of 1.5 MW DFIG WT.Index Terms-Doubly fed induction generator (DFIG), fault ride through (FRT), grid faults, nine-switch converter, series voltage compensation (SeVC), unbalance, wind turbine (WT). 0885-8969

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“…Before proceeding on to Sections IV-A and IV-B on higher level control, it is fair to comment here that a similar modulation scheme can be found in [21], whose derivation is oriented more toward the space vector approach. Surely, the space vector domain can be insightful, but it also needlessly complicates the modulation process, and does not bring out the clamping patterns between the two references per phase as clearly as the carrier-based approach.…”

Section: A Modulation Principlesmentioning

confidence: 99%

An Integrated Nine-Switch Power Conditioner for Power Quality Enhancement and Voltage Sag Mitigation

Zhang

Loh

Gao

2012

IEEE Trans. Power Electron.

135

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A nine-switch power converter having two sets of output terminals was recently proposed in place of the traditional back-to-back power converter that uses 12 switches in total. The nine-switch converter has already been proven to have certain advantages, in addition to its component saving topological feature. Despite these advantages, the nine-switch converter has so far found limited applications due to its many perceived performance tradeoffs like requiring an oversized dc-link capacitor, limited amplitude sharing, and constrained phase shift between its two sets of output terminals. Instead of accepting these tradeoffs as limitations, a nine-switch power conditioner is proposed here that virtually "converts" most of these topological short comings into interesting performance advantages. Aiming further to reduce its switching losses, an appropriate discontinuous modulation scheme is proposed and studied here in detail to doubly ensure that maximal reduction of commutations is achieved. With an appropriately designed control scheme then incorporated, the nine-switch converter is shown to favorably raise the overall power quality in experiment, hence justifying its role as a power conditioner at a reduced semiconductor cost.

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Space Vectors Modulation for Nine-Switch Converters

Cited by 121 publications

References 17 publications

Mitigation of Power Quality Issues Due to High Penetration of Renewable Energy Sources in Electric Grid Systems Using Three-Phase APF/STATCOM Technologies: A Review

Mitigation of Power Quality Issues Due to High Penetration of Renewable Energy Sources in Electric Grid Systems Using Three-Phase APF/STATCOM Technologies: A Review

A Low Component Count Series Voltage Compensation Scheme for DFIG WTs to Enhance Fault Ride-Through Capability

An Integrated Nine-Switch Power Conditioner for Power Quality Enhancement and Voltage Sag Mitigation

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