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Derating Factor of Series Connected Thyristor String Formula

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Derating factor of thyristor string is 1 minus the string efficiency of the series combination. Check FAQs

DRF = 1 - \frac{V string}{V ss \cdot n}

DRF - Derating Factor of Thyristor String?V_string - Resultant Series Voltage of Thyristor String?V_ss - Worst Case Steady State Voltage?n - Number of Thyristors in Series?

Derating Factor of Series Connected Thyristor String Example

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Here is how the Derating Factor of Series Connected Thyristor String equation looks like with Values.

Here is how the Derating Factor of Series Connected Thyristor String equation looks like with Units.

Here is how the Derating Factor of Series Connected Thyristor String equation looks like.

0.9397 = 1 - \frac{20.512}{113.3 \cdot 3}

0.9397 = 1 - \frac{20.512V}{113.3V \cdot 3}

0.9397 = 1 - \frac{20.512}{113.3 \cdot 3}

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Derating Factor of Series Connected Thyristor String Solution

Follow our step by step solution on how to calculate Derating Factor of Series Connected Thyristor String?

FIRST Step Consider the formula

DRF = 1 - \frac{V string}{V ss \cdot n}

Next Step Substitute values of Variables

∴

DRF = 1 - \frac{20.512V}{113.3V \cdot 3}

Next Step Prepare to Evaluate

∴

DRF = 1 - \frac{20.512}{113.3 \cdot 3}

Next Step Evaluate

∴

DRF = 0.939652839070315

LAST Step Rounding Answer

∴

DRF = 0.9397

Derating Factor of Series Connected Thyristor String Formula Elements

Variables

Derating Factor of Thyristor String

Derating factor of thyristor string is 1 minus the string efficiency of the series combination.

Symbol: DRF

Measurement: NAUnit: Unitless

Note: Value should be less than 1.

Formulas to find Derating Factor of Thyristor String

Resultant Series Voltage of Thyristor String

Resultant series voltage of thyristor string is the resultant voltage of the series combination of n_s number of thyristors.

Symbol: V_string

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Formulas to find Resultant Series Voltage of Thyristor String

Worst Case Steady State Voltage

Worst case steady state voltage of thyristor is the voltage across thyristor 1 of the series string when I_D1=0 and ΔID = I_D2.

Symbol: V_ss

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Formulas to find Worst Case Steady State Voltage

Number of Thyristors in Series

Number of thyristors in series thyristor string is the quantity of thyristors in the series combination.

Symbol: n

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Number of Thyristors in Series

Other formulas in SCR Performance Parameters category

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Go Power Dissipated by Heat in SCR

P dis = \frac{T junc - T amb}{θ}

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θ = \frac{T junc - T amb}{P dis}

Go Worst Case Steady State Voltage across First Thyristor in Series Connected Thyristors

V ss = \frac{V string + R stb \cdot (n - 1) \cdot ΔI D}{n}

How to Evaluate Derating Factor of Series Connected Thyristor String?

Derating Factor of Series Connected Thyristor String evaluator uses Derating Factor of Thyristor String = 1-Resultant Series Voltage of Thyristor String/(Worst Case Steady State Voltage*Number of Thyristors in Series) to evaluate the Derating Factor of Thyristor String, The Derating factor of series connected thyristor string formula is 1 minus the string efficiency of the series combination. Derating Factor of Thyristor String is denoted by DRF symbol.

How to evaluate Derating Factor of Series Connected Thyristor String using this online evaluator? To use this online evaluator for Derating Factor of Series Connected Thyristor String, enter Resultant Series Voltage of Thyristor String (V_string), Worst Case Steady State Voltage (V_ss) & Number of Thyristors in Series (n) and hit the calculate button.

FAQs on Derating Factor of Series Connected Thyristor String

What is the formula to find Derating Factor of Series Connected Thyristor String?

The formula of Derating Factor of Series Connected Thyristor String is expressed as Derating Factor of Thyristor String = 1-Resultant Series Voltage of Thyristor String/(Worst Case Steady State Voltage*Number of Thyristors in Series). Here is an example- 0.941159 = 1-20.512/(113.3*3).

How to calculate Derating Factor of Series Connected Thyristor String?

With Resultant Series Voltage of Thyristor String (V_string), Worst Case Steady State Voltage (V_ss) & Number of Thyristors in Series (n) we can find Derating Factor of Series Connected Thyristor String using the formula - Derating Factor of Thyristor String = 1-Resultant Series Voltage of Thyristor String/(Worst Case Steady State Voltage*Number of Thyristors in Series).

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Derating Factor of Series Connected Thyristor String Formula

Derating Factor of Series Connected Thyristor String Example

Derating Factor of Series Connected Thyristor String Solution

Derating Factor of Series Connected Thyristor String Formula Elements

Other formulas in SCR Performance Parameters category

How to Evaluate Derating Factor of Series Connected Thyristor String?

FAQs on Derating Factor of Series Connected Thyristor String

Variable Name