Binary-Quintuple Progression Based 12-Switch 25-Level Converter With Nearest Level Modulation Technique for Grid-Tied and Standalone Applications

Mishra, Nidhi; Yadav, Shivam; Singh, Bhim; Padmanaban, Sanjeevikumar; Blaabjerg, Frede

doi:10.1109/tia.2020.3041563

Cited by 16 publications

(7 citation statements)

References 26 publications

(23 reference statements)

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“…Hybrid MLCs also require more active and passive components [4][5]. Now, in single\three phase MLCs, it plays a pivotal role to convert DC to AC power by less number of active switches, with better efficiency [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Performance Assessment of Eight-Switch 11-Level Packed U Cell Converter Under Dynamic Solar Photovoltaic Environment

Mishra

Yadav

Singh

et al. 2022

IEEE J. Emerg. Sel. Topics Power Electron.

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This paper presents a new eleven-level packed U cell (PUC) converter with less active switches for solar photovoltaic (PV) applications. This PUC converter comprises eight active switches with two capacitors and a photovoltaic array. Compared to the existing topology, the proposed topology has the ability to attain eleven levels in converter output voltage, with fewer active switches. The operating modes of the eleven-level PUC converter are discussed. A single-phase active and reactive power (PQ) control with the capacitor voltage balancing is incorporated for grid-tied configuration. The maximum power point tracking (MPPT) using perturb and observe is used from the PV array. The balancing of floating capacitors is achieved by proportionalintegral (PI) controllers. This helps in achieving desired converter voltage levels. Conduction and switching losses are calculated for the efficiency of the system. Eleven level PUC converter performance is analyzed in steady-state and dynamic conditions using the OPAL-RT test bench.

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Section: Introductionmentioning

confidence: 99%

Performance Assessment of Eight-Switch 11-Level Packed U Cell Converter Under Dynamic Solar Photovoltaic Environment

Mishra

Yadav

Singh

et al. 2022

IEEE J. Emerg. Sel. Topics Power Electron.

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“…The modified carrier techniques are discussed for power quality improvement of a single‐source solar converter [22]. The real‐time investigation of a new solar converter topology with nearest level control is discussed in [23]. The real‐time validation of an eleven‐level packed U cell converter is discussed in [24].…”

Section: Introductionmentioning

confidence: 99%

Optimal third harmonic injection based nearest level control of large‐scale solar photovoltaic multilevel converter

Yadav

Mishra

Singh

2022

Energy Conversion and Econom

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This paper presents a new control approach with an optimal third harmonic injectionbased nearest level modulation (OTHI-NLM) technique for a large-scale solar photovoltaic (SPV) system. This system uses a single-source multilevel converter to feed solar power into the grid. The merits of the optimal third harmonic injection (OTHI) and nearest level modulation (NLM) are considered for switching the SPV converter. A unique analysis to have an adaptive optimal injection with varying solar irradiance is conducted and compared with the well-known carrier-based high-frequency switching technique. The variations of harmonics for OTHI-NLM, an optimal third harmonic pulse width modulation (OTHI-PWM), and a constant third harmonic injection method are analysed at different irradiance levels. This optimal injection provides benefits such as enhanced DC bus utilization (DBU), better harmonics performance at different solar irradiance levels. The detailed methodology of the OTHI algorithm, nearest level modulation (NLM) technique with an optimal quotient calculation, and an instantaneous optimal third harmonic injection (THI) in closed-loop are presented. The comparative analysis shows the effectiveness of the SPV grid-tied structure over well-known ones. The power quality of the renewable energy system is investigated in dynamic solar irradiations. Moreover, simulation results are presented and validated in a real-time test bench.

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“…A grid-connected SC-MLI has been presented in [29] that uses two PUC inverters and generates 25-level. The advantage of this topology is low TSV and low components, but to charge the capacitors it needs a proper control strategy and also sensors that make it complex and costly to achieve high voltage levels.…”

Section: Introductionmentioning

confidence: 99%

Reduced Switch Multilevel Inverter Topologies for Renewable Energy Sources

Sarebanzadeh

Hosseinzadeh²,

Garcia

et al. 2021

IEEE Access

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This article proposes two generalized multilevel inverter configurations that reduce the number of switching devices, isolated DC sources, and total standing voltage on power switches, making them suitable for renewable energy sources. The main topology is a multilevel inverter that handles two isolated DC sources by ten power switches to create twenty-five voltage levels. Based on the proposed main topology two generalized multilevel inverters are introduced to indicate flexibility in designing and also to minimize the number of elements. The optimal topologies for both extensive multilevel inverters are derived from different design objectives such as minimizing the number of elements (gate drivers, DC sources), achieving a large number of levels, and minimizing the total standing voltage. The main advantages of proposed topologies are a reduced number of elements than other multilevel inverters based on the comparison studies which is performed among the proposed topologies and other topologies. The power loss analysis and standalone PV application of the proposed topologies are discussed. The experimental results are presented for the proposed topology to demonstrate the correct operation of the proposal.INDEX TERMS single-phase multilevel inverters; generalized topologies; cascaded multilevel inverters; symmetric and asymmetric operations, renewable energy sources, photovoltaic system.

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Binary-Quintuple Progression Based 12-Switch 25-Level Converter With Nearest Level Modulation Technique for Grid-Tied and Standalone Applications

Cited by 16 publications

References 26 publications

Performance Assessment of Eight-Switch 11-Level Packed U Cell Converter Under Dynamic Solar Photovoltaic Environment

Performance Assessment of Eight-Switch 11-Level Packed U Cell Converter Under Dynamic Solar Photovoltaic Environment

Optimal third harmonic injection based nearest level control of large‐scale solar photovoltaic multilevel converter

Reduced Switch Multilevel Inverter Topologies for Renewable Energy Sources

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