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## Thyristor commutation voltage for Class B commutation Solution

STEP 0: Pre-Calculation Summary
Formula Used
Thyristor commutation voltage = Source voltage*cos(Angular frequency in radians/sec*(Thyristor reverse bias time-Auxiliary thyristor reverse bias time))
V = Vs*cos(w*(t3-t4))
This formula uses 1 Functions, 4 Variables
Functions Used
cos - Trigonometric cosine function, cos(Angle)
Variables Used
Source voltage - Source voltage A voltage source is a two-terminal device that can maintain a fixed voltage. (Measured in Volt)
Angular frequency in radians/sec - Angular frequency in radians/sec is used calculating the angular frequency by using pi as 3.14. (Measured in Radian per Second)
Thyristor reverse bias time - Thyristor reverse bias time is defined as the time required by the thyristor to get reverse bias during the process of commutation. (Measured in Second)
Auxiliary thyristor reverse bias time - Auxiliary thyristor reverse bias time is the time after which the auxiliary thyristor gets reverse biased in class B commutation. (Measured in Second)
STEP 1: Convert Input(s) to Base Unit
Source voltage: 9 Volt --> 9 Volt No Conversion Required
Thyristor reverse bias time: 5 Second --> 5 Second No Conversion Required
Auxiliary thyristor reverse bias time: 10 Second --> 10 Second No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
V = Vs*cos(w*(t3-t4)) --> 9*cos(10*(5-10))
Evaluating ... ...
V = 8.68469425642902
STEP 3: Convert Result to Output's Unit
8.68469425642902 Volt --> No Conversion Required
8.68469425642902 Volt <-- Thyristor commutation voltage
(Calculation completed in 00.010 seconds)

## < 10+ Thyristors Calculators

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Worst case steady state voltage across first thyristor in series connected thyristors
Worst case steady state voltage of thyristor 1 = ((Resultant series voltage of thyristor string+(Number of thyristors in series thyristor string-1)*Resistance*Off state current spread of thyristor string))/Number of thyristors in series thyristor string Go
Voltage across first thyristor in series-connected thyristors
Voltage across thyristor 1 in thyristor string = (Resultant series voltage of thyristor string+(Number of thyristors in series thyristor string-1)*Resistance*Off state current spread of thyristor string)/Number of thyristors in series thyristor string Go
Resultant series voltage of series connected thyristor string
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Power dissipated by heat in SCR
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Thermal resistance of SCR
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### Thyristor commutation voltage for Class B commutation Formula

Thyristor commutation voltage = Source voltage*cos(Angular frequency in radians/sec*(Thyristor reverse bias time-Auxiliary thyristor reverse bias time))
V = Vs*cos(w*(t3-t4))

## What happens happens after the commutation of main SCR?

Once the main SCR T1 is turned off, load current I0 begins to flow from source Vs to load though C, L and D. This causes capacitor C to charge linearly from Vab to zero at t = t4 and then to source voltage Vs at t=t5. At t=t5, the capacitor is charged up to source voltage Vs with its left hand plate positive. Therefore, capacitor will not allow the flow of load current after t = t5.

## How to Calculate Thyristor commutation voltage for Class B commutation?

Thyristor commutation voltage for Class B commutation calculator uses Thyristor commutation voltage = Source voltage*cos(Angular frequency in radians/sec*(Thyristor reverse bias time-Auxiliary thyristor reverse bias time)) to calculate the Thyristor commutation voltage, The Thyristor commutation voltage for Class B commutation formula is defined as the voltage across the main thyristor it gets commutated for class B commutation. Thyristor commutation voltage is denoted by V symbol.

How to calculate Thyristor commutation voltage for Class B commutation using this online calculator? To use this online calculator for Thyristor commutation voltage for Class B commutation, enter Source voltage (Vs), Angular frequency in radians/sec (w), Thyristor reverse bias time (t3) & Auxiliary thyristor reverse bias time (t4) and hit the calculate button. Here is how the Thyristor commutation voltage for Class B commutation calculation can be explained with given input values -> 8.684694 = 9*cos(10*(5-10)).

### FAQ

What is Thyristor commutation voltage for Class B commutation?
The Thyristor commutation voltage for Class B commutation formula is defined as the voltage across the main thyristor it gets commutated for class B commutation and is represented as V = Vs*cos(w*(t3-t4)) or Thyristor commutation voltage = Source voltage*cos(Angular frequency in radians/sec*(Thyristor reverse bias time-Auxiliary thyristor reverse bias time)). Source voltage A voltage source is a two-terminal device that can maintain a fixed voltage, Angular frequency in radians/sec is used calculating the angular frequency by using pi as 3.14, Thyristor reverse bias time is defined as the time required by the thyristor to get reverse bias during the process of commutation & Auxiliary thyristor reverse bias time is the time after which the auxiliary thyristor gets reverse biased in class B commutation.
How to calculate Thyristor commutation voltage for Class B commutation?
The Thyristor commutation voltage for Class B commutation formula is defined as the voltage across the main thyristor it gets commutated for class B commutation is calculated using Thyristor commutation voltage = Source voltage*cos(Angular frequency in radians/sec*(Thyristor reverse bias time-Auxiliary thyristor reverse bias time)). To calculate Thyristor commutation voltage for Class B commutation, you need Source voltage (Vs), Angular frequency in radians/sec (w), Thyristor reverse bias time (t3) & Auxiliary thyristor reverse bias time (t4). With our tool, you need to enter the respective value for Source voltage, Angular frequency in radians/sec, Thyristor reverse bias time & Auxiliary thyristor reverse bias time and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well. Let Others Know