Lifetime Evaluation of Grid-Connected PV Inverters Considering Panel Degradation Rates and Installation Sites

Sangwongwanich, Ariya; Yang, Yongheng; Séra, Dezső; Blaabjerg, Frede

doi:10.1109/tpel.2017.2678169

Cited by 170 publications

(103 citation statements)

References 35 publications

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“…From the previous lifetime evaluation, the LC during oneyear operation can be calculated from the mission profile. In order to evaluate the reliability of the system, parameter variations need to be introduced in the lifetime evaluation process (e.g., lifetime model and the stress parameters) by using the Monte Carlo simulation [33]- [35]. By doing so, the lifetime distribution and the unreliability function of the power device can be expressed in terms of statistical value, and the reliability metrics such as B x lifetime can be obtained [36].…”

Section: Reliability Analysismentioning

confidence: 99%

“…Notably, for the system with several components (e.g., the PV inverter with several power devices), the reliability block diagram, which represents the reliability interaction among components in the system, is required for calculating the reliability of the entire system. A step-by-step system-level reliability evaluation process has been discussed in details in [33]- [35].…”

Section: A Monte Carlo Simulationmentioning

confidence: 99%

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Impacts of PV array sizing on PV inverter lifetime and reliability

Sangwongwanich

Yang

Séra

et al. 2017

2017 IEEE Energy Conversion Congress and Exposition (ECCE)

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In order to enable a more wide-scale utilization of PV systems, the cost of PV energy has to be comparable with other energy sources. Oversizing the PV array is one common approach to reduce the cost of PV energy, since it increases the PV energy yield during low solar irradiance conditions. However, oversizing the PV array will increase the loading of PV inverters, which may have undesired influence on the PV inverter lifetime and reliability. In that case, it may result in a negative impact on the overall PV energy cost, due to the increased maintenance for the PV inverters. This paper evaluates the lifetime of PV inverters considering the PV array sizing and installation sites, e.g., Denmark and Arizona. The results reveal that the PV array sizing has a considerable impact on the PV inverter lifetime and reliability, especially in Denmark, where the average solar irradiance level is relatively low.

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Section: Reliability Analysismentioning

confidence: 99%

Section: A Monte Carlo Simulationmentioning

confidence: 99%

Impacts of PV array sizing on PV inverter lifetime and reliability

Sangwongwanich

Yang

Séra

et al. 2017

2017 IEEE Energy Conversion Congress and Exposition (ECCE)

Self Cite

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show abstract

“…In the prior-art research, it is suggested that the reliability and lifetime of power electronic systems (e.g., PV inverters) are strongly affected by the operating conditions [13]- [18], referred to as mission profiles. Thus, the mission profile is usually required as an input of the DfR process.…”

Section: Introductionmentioning

confidence: 99%

“…For PV applications, the solar irradiance and the ambient temperature are normally considered as the components of a mission profile, as they determine the PV power production (i.e., the PV inverter loading). Since the solar irradiance and ambient temperature are location-dependent (due to the climate condition of the installation site), the mission profile can vary significantly, and thus the reliability of PV inverters [15]- [18]. From the design perspective, this is a challenge for the DfR approach, where the concept of "one design fits all" is difficult to be achieved.…”

Section: Introductionmentioning

confidence: 99%

Mission Profile-Oriented Control for Reliability and Lifetime of Photovoltaic Inverters

Sangwongwanich

Yang

Séra

et al. 2020

IEEE Trans. on Ind. Applicat.

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With the aim to increase the competitiveness of solar energy, the high reliability of Photovoltaic (PV) inverters is demanded. For PV applications, the inverter reliability and lifetime are strongly affected by the operating condition that is referred to as the mission profile (i.e., solar irradiance and ambient temperature). Since the mission profile of PV systems is location-dependent, the inverter reliability performance and lifetime expectation can vary accordingly. That is, from the reliability perspective, PV inverters with the same design metrics (e.g., component selection) may be over-or under-designed under different mission profiles. This will increase the overall system cost, e.g., initial cost for over-designed cases and maintenance cost for under-designed cases, which should be avoided. This paper thus explores the possibility to adapt the control strategies of PV inverters to the corresponding mission profiles. With this, similar reliability targets (e.g., component lifetime) can be achieved even under different mission profiles. Case studies have been carried out on PV systems installed in Denmark and Arizona, where the lifetime and the energy yield are evaluated. The results reveal that the inverter reliability can be improved by selecting a proper control strategy according to the mission profile.

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“…Renewable energy (RE) refers to energy generated from non‐depleting indigenous resources, such as sunlight, wind, tide and geothermal heat . In the energy sector, the generation of electricity from renewable resources has received a huge amount of attention worldwide . The primary reason for this is because RE is based on clean resources that produce no or insignificant amounts of waste products and pollutants .…”

Section: Introductionmentioning

confidence: 99%

Testing guidelines for connection of solar photovoltaic farm to distribution grid: The Malaysian experience

Yong

Ramachandaramurthy

Tan

et al. 2020

Int Trans Electr Energ Syst

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Summary Solar photovoltaic technology is intermittent in nature and employs power converters for grid‐interconnection, which can bring stability and power quality (PQ) issues to the power grid. Therefore, a set of testing guidelines is required to assure that solar plants comply with the grid and inverter requirements. As such, this article presents comprehensive testing guidelines for the interconnection of solar systems into Malaysian power grid, including inverter and PQ tests. The test points, conditions, parameters and acceptable limits for both tests are discussed in detail. This article also presents the results of a case study in which the testing guidelines were applied to examine the PQ of an actual grid‐connected solar photovoltaic plant in Malaysia and to assess the performance of the smart inverter used in the tested solar system. The testing outcomes, which were recorded by a PQ analyser, showed that the tested solar system was in compliance with all the requirements stipulated in the testing guidelines. The findings presented in this article will help relevant parties to understand these solar testing guidelines and serve to promote the wide deployment of solar technology towards a clean and sustainable future.

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Lifetime Evaluation of Grid-Connected PV Inverters Considering Panel Degradation Rates and Installation Sites

Cited by 170 publications

References 35 publications

Impacts of PV array sizing on PV inverter lifetime and reliability

Impacts of PV array sizing on PV inverter lifetime and reliability

Mission Profile-Oriented Control for Reliability and Lifetime of Photovoltaic Inverters

Testing guidelines for connection of solar photovoltaic farm to distribution grid: The Malaysian experience

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