Simulation of Two-Level Photovoltaic Grid-Connected System Based on Current Control of Hysteresis Band

Zang, Haiyang; Yang, Xiu

doi:10.1109/appeec.2011.5748386

Cited by 7 publications

(4 citation statements)

References 2 publications

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“…The deterioration of the PV modules output power capacity during the operational lifetime period of the PV inverter affects the values of the stress factors applied to the PV inverter components and the values of the resulting failure rates in (6). Considering these parameters, the PV array output power, pv P (W) in (8), is calculated in the proposed methodology as follows:…”

Section: Modeling Of Transformerless Pv Inverter Topologies For mentioning

confidence: 99%

“…The total power loss of the PV inverter, tot P in (8), is equal to the sum of the conduction and switching losses of the power semiconductors (i.e. power switches, free-wheeling diodes and clamping diodes) comprising the power section of the PV inverter, cond P (W) and sw P (W), respectively, the power loss on the LCL-filter damping resistor,…”

Section: Modeling Of Transformerless Pv Inverter Topologies For mentioning

confidence: 99%

“…Sinusoidal PWM, Space-vector PWM, hysteresis band control etc.) [6][7][8]. A sinusoidal current with low harmonic content is injected into the electric grid by filtering the high-frequency harmonics of the PWM waveform produced at the output of the PV inverter power section.…”

Section: Introductionmentioning

confidence: 99%

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Optimal Design of Modern Transformerless PV Inverter Topologies

Saridakis

Koutroulis

Blaabjerg

2013

IEEE Trans. Energy Convers.

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The design optimization of H5, H6, Neutral Point Clamped, Active-Neutral Point Clamped and Conergy-NPC transformerless Photovoltaic inverters is presented in this paper. The components reliability in terms of the corresponding malfunctions, affecting the Photovoltaic inverter maintenance cost during the operational lifetime period of the Photovoltaic installation, is also considered in the optimization process. According to the results of the proposed design method, different optimal values of the Photovoltaic inverter design variables are derived for each Photovoltaic inverter topology and installation site. The H5, H6, Neutral Point Clamped, Active-Neutral Point Clamped and Conergy-NPC Photovoltaic inverters designed using the proposed optimization process feature lower Levelized Cost Of generated Electricity and lifetime cost, longer Mean Time Between Failures and inject more Photovoltaic-generated energy into the electric grid than their non-optimized counterparts, thus maximizing the total economic benefit obtained during the operational time of the Photovoltaic system.

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Section: Modeling Of Transformerless Pv Inverter Topologies For mentioning

confidence: 99%

Section: Modeling Of Transformerless Pv Inverter Topologies For mentioning

confidence: 99%

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Optimal Design of Modern Transformerless PV Inverter Topologies

Saridakis

Koutroulis

Blaabjerg

2013

IEEE Trans. Energy Convers.

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“…The classical two-level voltage source inverter (2L-VSI) is well-known for its low cost and simple design which is usually implemented in the low PV power applications [4], [6]. In the case of large-scaled PV plants, multiple 2L-VSIs must be connected in parallel in order to deliver such high power to the grid due to its limited semiconductor devices blocking voltage capability.…”

Section: Introductionnnmentioning

confidence: 99%

NPC photovoltaic grid-connected inverter using proportional-resonant controller

Tafti¹,

Maswood²,

Ukil³

et al. 2014

2014 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)

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Multi-megawatt photovoltaic (PV) power plants are widespread in electrical power systems because of the drastic decrease in the PV panel prices. The multi-string structure is considered for high power PV systems due to the increase in the overall energy conversion efficiency and the modularity when compared to the centralized topology. High power conversion can be achieved easily using parallel connection of several gridtied two-level voltage-source inverters (2L-VSIs). However, this configuration complicates the control designs. Thus, this issue can be overcome by replacing these 2L-VSIs with a single high power three-level neutral point clamped inverter (3L-NPC). Moreover, the 3L-NPC inherits several attractive merits such as improved power quality with reduced total harmonic distortion (THD), increased overall efficiency as well as lower costs. In addition to that, the voltage oriented control using proportionalresonant (VOC-PR) in conjunction with the adaptive space vector modulation (ASVM) technique is proposed for the large-scaled PV system with grid-tied NPC inverter. The feasibility of the proposed control for the high power system is validated through the simulation results under various environmental conditions. Besides that, the dynamic mance of the system under the proposed VOC-PR is greatly enhanced in comparison with the conventional method using PI controller.

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