Average Field Voltage of Three Phase Semi-Converter Drive Solution

STEP 0: Pre-Calculation Summary
Formula Used
Semi Drive Field Voltage in Three Phase = (3*Peak Input Voltage*(1+cos(Delay Angle of Thyristor)))/(2*pi)
Vf(semi_3p) = (3*Vm*(1+cos(α)))/(2*pi)
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 in Three Phase - (Measured in Volt) - Semi Drive Field Voltage in Three Phase 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_3p) = (3*Vm*(1+cos(α)))/(2*pi) --> (3*220*(1+cos(1.2217304763958)))/(2*pi)
Evaluating ... ...
Vf(semi_3p) = 140.968832095878
STEP 3: Convert Result to Output's Unit
140.968832095878 Volt --> No Conversion Required
FINAL ANSWER
140.968832095878 140.9688 Volt <-- Semi Drive Field Voltage in Three Phase
(Calculation completed in 00.004 seconds)

Credits

Created by Devyaani Garg
Shiv Nadar University (SNU), Greater Noida
Devyaani Garg has created this Calculator and 50+ more calculators!
Verified by Payal Priya
Birsa Institute of Technology (BIT), Sindri
Payal Priya has verified this Calculator and 1900+ more calculators!

5 Three Phase Drives Calculators

Maximum Torque in Induction Motor Drives
Go Maximum Torque = (3/(2*Synchronous Speed))* (Terminal Voltage^2)/(Stator Resistance+sqrt(Stator Resistance^2+(Stator Leakage Reactance+Rotor Leakage Reactance)^2))
Average Armature Voltage of Three Phase Full-Converter Drives
Go Full Drive Armature Voltage in Three Phase = (3*sqrt(3)*Peak Input Voltage*cos(Delay Angle of Thyristor))/pi
Average Field Voltage of Three Phase Semi-Converter Drive
Go Semi Drive Field Voltage in Three Phase = (3*Peak Input Voltage*(1+cos(Delay Angle of Thyristor)))/(2*pi)
Armature Terminal Voltage in Half-Wave Converter Drives
Go Average Output Voltage = ((3*Maximum Line Voltage)/(2*pi))*cos(Delay Angle of Thyristor)
Air Gap Power in Three Phase Induction Motor Drives
Go Air Gap Power = 3*Rotor Current^2*(Rotor Resistance/Slip)

Average Field Voltage of Three Phase Semi-Converter Drive Formula

Semi Drive Field Voltage in Three Phase = (3*Peak Input Voltage*(1+cos(Delay Angle of Thyristor)))/(2*pi)
Vf(semi_3p) = (3*Vm*(1+cos(α)))/(2*pi)

What is three phase semi-converter drive?

A three phase semi-converter fed drive is a one-quadrant drive and is limited to applications up to 115 kW power levels. The field converter should be a single-phase or three phase semi-converter.

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 bridge structure, and no diodes are present.

How to Calculate Average Field Voltage of Three Phase Semi-Converter Drive?

Average Field Voltage of Three Phase Semi-Converter Drive calculator uses Semi Drive Field Voltage in Three Phase = (3*Peak Input Voltage*(1+cos(Delay Angle of Thyristor)))/(2*pi) to calculate the Semi Drive Field Voltage in Three Phase, The Average Field Voltage of Three Phase Semi-Converter Drive formula is the average voltage developed at the terminals of the armature of the DC motor drive. in the above formula, the delay angle of the field thyristor (αf) is considered. Semi Drive Field Voltage in Three Phase is denoted by Vf(semi_3p) symbol.

How to calculate Average Field Voltage of Three Phase Semi-Converter Drive using this online calculator? To use this online calculator for Average Field Voltage of Three Phase Semi-Converter Drive, enter Peak Input Voltage (Vm) & Delay Angle of Thyristor (α) and hit the calculate button. Here is how the Average Field Voltage of Three Phase Semi-Converter Drive calculation can be explained with given input values -> 140.9688 = (3*220*(1+cos(1.2217304763958)))/(2*pi).

FAQ

What is Average Field Voltage of Three Phase Semi-Converter Drive?
The Average Field Voltage of Three Phase Semi-Converter Drive formula is the average voltage developed at the terminals of the armature of the DC motor drive. in the above formula, the delay angle of the field thyristor (αf) is considered and is represented as Vf(semi_3p) = (3*Vm*(1+cos(α)))/(2*pi) or Semi Drive Field Voltage in Three Phase = (3*Peak Input Voltage*(1+cos(Delay Angle of Thyristor)))/(2*pi). 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 Three Phase Semi-Converter Drive?
The Average Field Voltage of Three Phase Semi-Converter Drive formula is the average voltage developed at the terminals of the armature of the DC motor drive. in the above formula, the delay angle of the field thyristor (αf) is considered is calculated using Semi Drive Field Voltage in Three Phase = (3*Peak Input Voltage*(1+cos(Delay Angle of Thyristor)))/(2*pi). To calculate Average Field Voltage of Three Phase Semi-Converter Drive, 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.
Let Others Know
Facebook
Twitter
Reddit
LinkedIn
Email
WhatsApp
Copied!