Lifetime estimation for IGBT modules in wind turbine power converter system considering ambient temperature

“…The SM fatigue damage analysis first needs to collect the mission profile of MMC operation [20,21]. Including power loss, device junction temperature, device related thermal parameters, etc.…”

Section: Sm Fatigue Damage Analysis Flowmentioning

confidence: 99%

“…Similarly, the total loss of the diode 𝑃 𝐷,𝑙𝑜𝑠𝑠 is the sum of on-state loss 𝑃 𝐷,𝑐𝑜𝑛𝑑 and reverse recovery loss 𝑃 𝐷,𝑟𝑒𝑐 . Equations ( 1) and ( 2) are conducted in detail based on circuit theory in [21,26].…”

Section: Igbt Diode Fatigue Damage Analysismentioning

confidence: 99%

Cumulative Fatigue Damage Balancing for Modular Multilevel Converter

Zhou

Wang

et al. 2020

Energies

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With many advantages, modular multilevel convert (MMC) has been extensively used in high and medium voltage power transmission projects. The thermal performance and reliability of components in MMC are key issues in system operation. However, in the current research on the reliability of MMC components, there are few methods to improve service lifetime expectancy of the components. This paper proposes a balance control algorithm, based on the cumulative fatigue damage of components, feedback to the control terminal for allocating the sub-module (SM) operating state and generating trigger pulses. Finally, the effectiveness of the proposed algorithm is verified and discussed in case studies. It is found that this algorithm is able to improve the aging degree of components in the meanwhile, the improvement in MMC reliability comes at the cost of slightly increasing capacitor voltage fluctuations and total harmonic distortion (THD). Due to the limitation of capacitor thermal performance, SM capacitor banks become a weak link in MMC reliability.

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“…Then, the power is switched off until the temperature is decreased to a minimum value. The power cycling capability of the device can be evaluated by performing the intermittent life test, and the reliability of device suffering from various temperature fluctuations can be further estimated [24], [25].…”

Section: A Test Bench For Intermittent Life Testmentioning

confidence: 99%

Investigation on Intermittent Life Testing Program for IGBT

Cheng¹,

Fu²,

Jiang³

et al. 2017

Journal of Power Electronics

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The reliability issue of IGBT is a concern for researchers given the critical role the device plays in the safety of operations of the converter system. The reliability of power devices can be estimated from the intermittent life test, which aims to simulate typical applications in power electronics in an accelerated manner to obtain lifetime data. However, the test is time-consuming, as testing conditions are not well considered and only rough provisions have been made in the current standards. Acceleration of the test by changing critical test conditions is controversial due to the activation of unexpected failure mechanisms. Therefore, full investigations were conducted on critical test conditions of intermittent life test. A design optimization process for IGBT intermittent life testing program was developed to save on test times without imposing additional failure mechanisms. The applicability of the process has been supported by a number of tests and failure analysis of the test results. The process proposed in this paper can guide the test process for other power semiconductors.

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Lifetime estimation for IGBT modules in wind turbine power converter system considering ambient temperature

Cited by 27 publications

References 17 publications

Fatigue reliability of wind turbines: historical perspectives, recent developments and future prospects

Fatigue reliability of wind turbines: historical perspectives, recent developments and future prospects

Cumulative Fatigue Damage Balancing for Modular Multilevel Converter

Investigation on Intermittent Life Testing Program for IGBT

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