Effective space vector modulation switching sequence for three phase Z source inverters

Barathy, Balaji; Kavitha, A.; Viswanathan, T.R.

doi:10.1049/iet-pel.2013.0903

Cited by 18 publications

(16 citation statements)

References 11 publications

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“…To overcome the limitations of conventional inverters, a new topology called the Z-source inverter (ZSI) [2] was introduced. In recent times, many researchers have shown improvements in the ZSIs in different ways which includes new topologies, control strategies, modelling and applications [3][4][5][6][7][8][9][10][11][12][13][14]. The forbidden shoot-through state in the conventional VSI decides the required boost gain of the ZSI.…”

Section: Introductionmentioning

confidence: 99%

Single‐phase high‐voltage gain switched LC Z‐source inverters

Bussa¹,

Ahmad²,

Singh³

et al. 2018

IET Power Electronics

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Recently, switched-inductor Z-source inverters (SL-ZSIs) have been reported to achieve high-voltage gain and good power inversion operation at low shoot-through duty ratio D as compared to conventional ZSI. As the SL-ZSIs have high passive component count, weight, volume and losses of the system increases that lead to reduction in efficiency. To address the issues of conventional ZSI and SL-ZSIs, two single-phase switched LC (SLC)-ZSIs (Type 1 SLC-ZSI and Type 2 SLC-ZSI) are proposed in this study to achieve high-voltage gains at low values of D with lower passive component count as compared to SL-ZSIs. At low values of D, modulation index M approaches to higher values which results into improved AC output at reduced harmonic distortion. Due to low passive component count in the proposed inverters, weight, volume and losses decreases resulting into increase in efficiency. The proposed inverters can be used in various DC-AC and DC-DC power conversions in renewable energy applications due to their high-voltage gain, better immunity to EMI noise and higher reliability. The detailed steady-state analysis of the two proposed SLC-ZSIs is given in this study. Scaled down experimentation has been carried out to verify the performance of the proposed inverters.

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Section: Introductionmentioning

confidence: 99%

Single‐phase high‐voltage gain switched LC Z‐source inverters

Bussa¹,

Ahmad²,

Singh³

et al. 2018

IET Power Electronics

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“…The classical ZSI topology has low voltage gain with high switching losses and high voltage stress, posing many challenges for PV based three-phase microinverters. In previous studies [98,99],…”

Section: Three-phase Z Source Invertermentioning

confidence: 91%

Classification of Three-Phase Grid-Tied Microinverters in Photovoltaic Applications

et al. 2020

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Microinverters are an essential part of the photovoltaic (PV) industry with significant exponential prevalence in new PV module architectures. However, electrolyte capacitors used to decouple double line frequency make the single-phase microinverters topologies the slightest unit in this promising industry. Three-phase microinverter topologies are the new trend in this industry because they do not have double-line frequency problems and they do not need the use of electrolyte capacitors. Moreover, these topologies can provide additional features such as four-wire operation. This paper presents a detailed discussion of the strong points of three-phase microinverters compared to single-phase counterparts. The developed topologies of three-phase microinverters are presented and evaluated based on a new classification based on the simplest topologies among dozens of existing inverters. Moreover, the paper considers the required standardized features of PV, grid, and the microinverter topology. These features have been classified as mandatory and essential. Examples of the considered features for classifications are Distributed Maximum Power Point Tracking (DMPPT), voltage boosting gain, and four-wire operation. The developed classification is used to identify the merits and demerits of the classified inverter topologies. Finally, a recommendation is given based on the classified features, chosen inverter topologies, and associated features.

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“…These converters comprise of an impedance source network between the source and the bridge-leg switches of the inverter. Consequently, the maximum boost control, the maximum constant boost control, and space-vector-based PWM control [16][17][18][19][20][21][22][23][24] schemes have been proposed for impedance source networks. Most of these impedance source networks are utilised for inverter operation, and hence the objective for these PWM schemes is to ensure higher range of control for the ac output voltage only.…”

Section: Review Of Shoot-through-based Pwm Control Schemesmentioning

confidence: 99%

Constant‐frequency shoot‐through sine pulse‐width‐modulation scheme for three‐phase single‐input–hybrid‐output converter

Ray

Mishra

2016

IET Power Electronics

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Single-input-hybrid-output converters provide dc and ac outputs simultaneously from a single dc source in an integrated architecture. These topologies are well suited for applications comprising both dc and ac distribution buses. In this work, the three-phase boost-derived hybrid converter (3-j BDHC) has been studied which provides a 3-j ac output in addition to the step-up output obtained from a boost converter. The changes in design and the characteristic behaviour of the proposed BDHC topology have been studied in comparison to single-phase BDHC. The pulse-width-modulation (PWM) control associated with these topologies involves shoot-through states incorporated within the conventional sine-PWM strategies. The work proposes a PWM switching strategy with controllable shoot-through occurring at constant frequency to achieve lower inductor current ripple. The operating principle of the 3-j BDHC under balanced-load conditions using the proposed constant-frequency shoot-through sine PWM has been validated using experimental results.

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Effective space vector modulation switching sequence for three phase Z source inverters

Cited by 18 publications

References 11 publications

Single‐phase high‐voltage gain switched LC Z‐source inverters

Single‐phase high‐voltage gain switched LC Z‐source inverters

Classification of Three-Phase Grid-Tied Microinverters in Photovoltaic Applications

Constant‐frequency shoot‐through sine pulse‐width‐modulation scheme for three‐phase single‐input–hybrid‐output converter

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