A Hybrid Power Control Concept for PV Inverters with Reduced Thermal Loading

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Abstract

This letter proposes a hybrid power control concept for grid-connected Photovoltaic (PV) inverters. The control strategy is based on either a Maximum Power Point Tracking (MPPT) control or a Constant Power Generation (CPG) control depending on the instantaneous available power from the PV panels. The essence of the proposed concept lies in the selection of an appropriate power limit for the CPG control to achieve an improved thermal performance and an increased utilization factor of PV inverters,and thus to cater for a higher penetration level of PV systems with intermittent nature. A case study on a single-phase PV inverter under yearly operation is presented with analyses of the thermal loading, lifetime, and annual energy yield. It has revealed the trade-off factors to select the power limit and also verified the feasibility and the effectiveness of the proposed control concept.
Original languageEnglish
JournalIEEE Transactions on Power Electronics
Volume29
Issue number12
Pages (from-to)6271-6275
Number of pages5
ISSN0885-8993
DOIs
Publication statusPublished - 2014

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Power control
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Keywords

  • Photovoltaic inverters
  • Constant power generation
  • Maximum power point tracking
  • Efficiency
  • Thermal loading
  • Reliability

Cite this

@article{4805c794ce8c4d2b8de285887276a61a,
title = "A Hybrid Power Control Concept for PV Inverters with Reduced Thermal Loading",
abstract = "This letter proposes a hybrid power control concept for grid-connected Photovoltaic (PV) inverters. The control strategy is based on either a Maximum Power Point Tracking (MPPT) control or a Constant Power Generation (CPG) control depending on the instantaneous available power from the PV panels. The essence of the proposed concept lies in the selection of an appropriate power limit for the CPG control to achieve an improved thermal performance and an increased utilization factor of PV inverters,and thus to cater for a higher penetration level of PV systems with intermittent nature. A case study on a single-phase PV inverter under yearly operation is presented with analyses of the thermal loading, lifetime, and annual energy yield. It has revealed the trade-off factors to select the power limit and also verified the feasibility and the effectiveness of the proposed control concept.",
keywords = "Photovoltaic inverters, Constant power generation, Maximum power point tracking, Efficiency, Thermal loading, Reliability",
author = "Yongheng Yang and Huai Wang and Frede Blaabjerg and Tamas Kerekes",
year = "2014",
doi = "10.1109/TPEL.2014.2332754",
language = "English",
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pages = "6271--6275",
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A Hybrid Power Control Concept for PV Inverters with Reduced Thermal Loading. / Yang, Yongheng; Wang, Huai; Blaabjerg, Frede; Kerekes, Tamas.

In: IEEE Transactions on Power Electronics, Vol. 29, No. 12, 2014, p. 6271-6275 .

Research output: Contribution to journalLetterResearchpeer-review

TY - JOUR

T1 - A Hybrid Power Control Concept for PV Inverters with Reduced Thermal Loading

AU - Yang, Yongheng

AU - Wang, Huai

AU - Blaabjerg, Frede

AU - Kerekes, Tamas

PY - 2014

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N2 - This letter proposes a hybrid power control concept for grid-connected Photovoltaic (PV) inverters. The control strategy is based on either a Maximum Power Point Tracking (MPPT) control or a Constant Power Generation (CPG) control depending on the instantaneous available power from the PV panels. The essence of the proposed concept lies in the selection of an appropriate power limit for the CPG control to achieve an improved thermal performance and an increased utilization factor of PV inverters,and thus to cater for a higher penetration level of PV systems with intermittent nature. A case study on a single-phase PV inverter under yearly operation is presented with analyses of the thermal loading, lifetime, and annual energy yield. It has revealed the trade-off factors to select the power limit and also verified the feasibility and the effectiveness of the proposed control concept.

AB - This letter proposes a hybrid power control concept for grid-connected Photovoltaic (PV) inverters. The control strategy is based on either a Maximum Power Point Tracking (MPPT) control or a Constant Power Generation (CPG) control depending on the instantaneous available power from the PV panels. The essence of the proposed concept lies in the selection of an appropriate power limit for the CPG control to achieve an improved thermal performance and an increased utilization factor of PV inverters,and thus to cater for a higher penetration level of PV systems with intermittent nature. A case study on a single-phase PV inverter under yearly operation is presented with analyses of the thermal loading, lifetime, and annual energy yield. It has revealed the trade-off factors to select the power limit and also verified the feasibility and the effectiveness of the proposed control concept.

KW - Photovoltaic inverters

KW - Constant power generation

KW - Maximum power point tracking

KW - Efficiency

KW - Thermal loading

KW - Reliability

U2 - 10.1109/TPEL.2014.2332754

DO - 10.1109/TPEL.2014.2332754

M3 - Letter

VL - 29

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JO - I E E E Transactions on Power Electronics

JF - I E E E Transactions on Power Electronics

SN - 0885-8993

IS - 12

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