Thyristor commutation voltage for Class B commutation Calculator

Main Category	Engineering ↺
Engineering	Electronics ↺
Electronics	Power Electronics ↺
Power Electronics	Thyristors ↺

✖Source voltage A voltage source is a two-terminal device that can maintain a fixed voltage.ⓘ Source voltage [Vs]			+10% -10%
✖Angular frequency in radians/sec is used calculating the angular frequency by using pi as 3.14.ⓘ Angular frequency in radians/sec [w]			+10% -10%
✖Thyristor reverse bias time is defined as the time required by the thyristor to get reverse bias during the process of commutation.ⓘ Thyristor reverse bias time [t₃]			+10% -10%
✖Auxiliary thyristor reverse bias time is the time after which the auxiliary thyristor gets reverse biased in class B commutation.ⓘ Auxiliary thyristor reverse bias time [t₄]			+10% -10%

✖Thyristor commutation voltage is defined as the magnitude of voltage at which a thyristor gets commutated.ⓘ Thyristor commutation voltage for Class B commutation [V]

⎘ Copy

👎

Formula

Reset

👍

Credits

Parminder Singh

Chandigarh University (CU), Punjab

Parminder Singh has created this Calculator and 50+ more calculators!

Rachita C

BMS College Of Engineering (BMSCE), Banglore

Rachita C has verified this Calculator and 50+ more calculators!

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
Angular frequency in radians/sec: 10 Radian per Second --> 10 Radian per Second 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

FINAL ANSWER

8.68469425642902 Volt <-- Thyristor commutation voltage

(Calculation completed in 00.010 seconds)

You are here

Home »
Engineering »
Electronics »
Power Electronics »
Thyristors »
Thyristor commutation voltage for Class B commutation

< 10+ Thyristors Calculators

Excess work due to thyristor 1 in chopper circuit

Excess energy in chopper circuit = 0.5*Reverse di/dt limiting inductance*((Load current of chopper circuit+(Reverse recovery time*Commutation capacitor voltage)/Reverse di/dt limiting inductance)-(Load current of chopper circuit^2)) Go

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

Resultant series voltage of thyristor string = Number of thyristors in series thyristor string*Voltage across thyristor 1 in thyristor string-(Number of thyristors in series thyristor string-1)*Resistance*Off state current spread of thyristor string Go

Maximum Thyristor gate voltage for resistance firing circuit

Maximum gate voltage = Maximum AC input voltage*(Stabilizing Resistance/(Stabilizing Resistance+Variable Resistance+Resistance)) Go

Derating factor of series connected thyristor string

Derating factor of thyristor string = 1-(Resultant series voltage of thyristor string/(Number of thyristors in series thyristor string*Worst case steady state voltage of thyristor 1)) Go

Power dissipated by heat in SCR

Power dissipated by heat in SCR = (SCR junction temperature-SCR ambient temperature)/Thermal resistance of SCR Go

Thermal resistance of SCR

Thermal resistance of SCR = (SCR junction temperature-SCR ambient temperature)/Power dissipated by heat in SCR Go

Leakage current of the collector-base junction

Collector to base leakage current = Collector current-Common base current gain of transistor*Emitter current Go

Discharging current of dv/dt protection thyristor circuits

Discharging current of thyristor circuit = Input voltage/((Resistance+Resistance)) Go

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.

Facebook
Twitter
WhatsApp
Reddit
LinkedIn
E-Mail

Let Others Know

✖

Facebook

Twitter

Copied!