Average Field Voltage of Single Phase Semi-Converter Drives Solution

STEP 0: Pre-Calculation Summary
Formula Used
Semi Drive Field Voltage = (Peak Input Voltage/pi)*(1+cos(Delay Angle of Thyristor))
Vf(semi) = (Vm/pi)*(1+cos(α))
This formula uses 1 Constants, 1 Functions, 3 Variables
Constants Used
pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288
Functions Used
cos - Cosine of an angle is the ratio of the side adjacent to the angle to the hypotenuse of the triangle., cos(Angle)
Variables Used
Semi Drive Field Voltage - (Measured in Volt) - Semi Drive Field Voltage is the average voltage developed at the field winding of the DC semi converter drive.
Peak Input Voltage - (Measured in Volt) - Peak input voltage is the peak value of the sinusoidal input voltage Vmsin(wt) to the converter drive.
Delay Angle of Thyristor - (Measured in Radian) - Delay Angle of Thyristor is the angle at which thyristors are triggered after zero crossing.
STEP 1: Convert Input(s) to Base Unit
Peak Input Voltage: 220 Volt --> 220 Volt No Conversion Required
Delay Angle of Thyristor: 70 Degree --> 1.2217304763958 Radian (Check conversion here)
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Vf(semi) = (Vm/pi)*(1+cos(α)) --> (220/pi)*(1+cos(1.2217304763958))
Evaluating ... ...
Vf(semi) = 93.9792213972517
STEP 3: Convert Result to Output's Unit
93.9792213972517 Volt --> No Conversion Required
FINAL ANSWER
93.9792213972517 93.97922 Volt <-- Semi Drive Field Voltage
(Calculation completed in 00.004 seconds)

Credits

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Shiv Nadar University (SNU), Greater Noida
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6 Single Phase Drives Calculators

RMS Value of Freewheeling Diode Current in Half Wave Converter Drives
Go RMS Freewheeling Diode Current = Armature Current*sqrt((pi+Delay Angle of Thyristor)/(2*pi))
Average Armature Voltage of Single Phase Half-Wave Converter Drive
Go Half Drive Armature Voltage = Peak Input Voltage/(2*pi)*(1+cos(Delay Angle of Thyristor))
RMS Value of Thyristor Current in Half Wave Converter Drives
Go RMS of Source Current = Armature Current*((pi-Delay Angle of Thyristor)/(2*pi))^(1/2)
Average Armature Voltage of Single Phase Full-Converter Drives
Go Full Drive Armature Voltage = (2*Peak Input Voltage*cos(Delay Angle of Thyristor))/pi
Average Field Voltage of Single Phase Semi-Converter Drives
Go Semi Drive Field Voltage = (Peak Input Voltage/pi)*(1+cos(Delay Angle of Thyristor))
Input Power of Single Phase Full Converter Drives
Go Input Power = ((2*sqrt(2))/pi)*cos(Delay Angle of Thyristor)

Average Field Voltage of Single Phase Semi-Converter Drives Formula

Semi Drive Field Voltage = (Peak Input Voltage/pi)*(1+cos(Delay Angle of Thyristor))
Vf(semi) = (Vm/pi)*(1+cos(α))

What is single phase semi-converter drive?

Single phase semi-converter drives are limited to the applications at 15 kW power level. The converter in the field circuit is a semi-converter. The armature circuit consists of two thyristors and two diodes connected in a bridge structure.

What is the difference between a semi-converter and a full-converter?

The main difference between a semi-converter and a full-converter is that the semi-converter always has equal number of diodes and thyristor connected in a bridge structure whereas a full-converter has all the thyristors connected in the bride structure, and no diodes are present.

How to Calculate Average Field Voltage of Single Phase Semi-Converter Drives?

Average Field Voltage of Single Phase Semi-Converter Drives calculator uses Semi Drive Field Voltage = (Peak Input Voltage/pi)*(1+cos(Delay Angle of Thyristor)) to calculate the Semi Drive Field Voltage, The Average Field Voltage of Single Phase Semi-Converter Drives formula is the average voltage developed at the field winding of the DC motor drive. In the above formula, we are considering the delay angle of the thyristor in the field winding (αf) is considered. Semi Drive Field Voltage is denoted by Vf(semi) symbol.

How to calculate Average Field Voltage of Single Phase Semi-Converter Drives using this online calculator? To use this online calculator for Average Field Voltage of Single Phase Semi-Converter Drives, enter Peak Input Voltage (Vm) & Delay Angle of Thyristor (α) and hit the calculate button. Here is how the Average Field Voltage of Single Phase Semi-Converter Drives calculation can be explained with given input values -> 93.97922 = (220/pi)*(1+cos(1.2217304763958)).

FAQ

What is Average Field Voltage of Single Phase Semi-Converter Drives?
The Average Field Voltage of Single Phase Semi-Converter Drives formula is the average voltage developed at the field winding of the DC motor drive. In the above formula, we are considering the delay angle of the thyristor in the field winding (αf) is considered and is represented as Vf(semi) = (Vm/pi)*(1+cos(α)) or Semi Drive Field Voltage = (Peak Input Voltage/pi)*(1+cos(Delay Angle of Thyristor)). Peak input voltage is the peak value of the sinusoidal input voltage Vmsin(wt) to the converter drive & Delay Angle of Thyristor is the angle at which thyristors are triggered after zero crossing.
How to calculate Average Field Voltage of Single Phase Semi-Converter Drives?
The Average Field Voltage of Single Phase Semi-Converter Drives formula is the average voltage developed at the field winding of the DC motor drive. In the above formula, we are considering the delay angle of the thyristor in the field winding (αf) is considered is calculated using Semi Drive Field Voltage = (Peak Input Voltage/pi)*(1+cos(Delay Angle of Thyristor)). To calculate Average Field Voltage of Single Phase Semi-Converter Drives, you need Peak Input Voltage (Vm) & Delay Angle of Thyristor (α). With our tool, you need to enter the respective value for Peak Input Voltage & Delay Angle of Thyristor and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
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