Starting Time for Induction Motor under No Load Solution

STEP 0: Pre-Calculation Summary
Formula Used
Starting Time For Induction motor on No Load = (-Mechanical Time Constant of Motor/2)*int((Slip/Slip at Maximum Torque+Slip at Maximum Torque/Slip)*x,x,1,0.05)
ts = (-τm/2)*int((s/sm+sm/s)*x,x,1,0.05)
This formula uses 1 Functions, 4 Variables
Functions Used
int - The definite integral can be used to calculate net signed area, which is the area above the x -axis minus the area below the x -axis., int(expr, arg, from, to)
Variables Used
Starting Time For Induction motor on No Load - (Measured in Second) - The Starting Time for Induction Motor on No Load is the duration required for the motor to accelerate from standstill to its rated speed when no mechanical load is applied to the motor shaft.
Mechanical Time Constant of Motor - (Measured in Second) - Mechanical Time Constant of Motor is defined as the time taken by motor to reach its synchronous speed from standstill under constant accelerating torque equal to the maximum torque of the motor.
Slip - Slip energy recovery is one of the methods of controlling the speed of an induction motor.
Slip at Maximum Torque - Slip at Maximum Torque refers to the slip value at which the motor produces its highest torque while still maintaining a stable operating condition.
STEP 1: Convert Input(s) to Base Unit
Mechanical Time Constant of Motor: 2.359 Second --> 2.359 Second No Conversion Required
Slip: 0.83 --> No Conversion Required
Slip at Maximum Torque: 0.67 --> No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
ts = (-τm/2)*int((s/sm+sm/s)*x,x,1,0.05) --> (-2.359/2)*int((0.83/0.67+0.67/0.83)*x,x,1,0.05)
Evaluating ... ...
ts = 1.2036324512228
STEP 3: Convert Result to Output's Unit
1.2036324512228 Second --> No Conversion Required
FINAL ANSWER
1.2036324512228 1.203632 Second <-- Starting Time For Induction motor on No Load
(Calculation completed in 00.007 seconds)

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Heritage Institute of Technology ( HITK), Kolkata
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Starting Time for Induction Motor under No Load Formula

​LaTeX ​Go
Starting Time For Induction motor on No Load = (-Mechanical Time Constant of Motor/2)*int((Slip/Slip at Maximum Torque+Slip at Maximum Torque/Slip)*x,x,1,0.05)
ts = (-τm/2)*int((s/sm+sm/s)*x,x,1,0.05)

How does the Starting Time of an Induction Motor on No Load differs under Load Conditions?

The starting time of an induction motor on no load is typically shorter than its starting time under loaded conditions. This is because there is minimal resistance to the rotor's motion when starting on no load, allowing the motor to reach its rated speed more quickly. Conversely, starting under loaded conditions involves additional inertia and mechanical resistance, requiring more torque and time to overcome the load and reach the rated speed.


How to Calculate Starting Time for Induction Motor under No Load?

Starting Time for Induction Motor under No Load calculator uses Starting Time For Induction motor on No Load = (-Mechanical Time Constant of Motor/2)*int((Slip/Slip at Maximum Torque+Slip at Maximum Torque/Slip)*x,x,1,0.05) to calculate the Starting Time For Induction motor on No Load, The Starting Time for Induction Motor under No Load refers to the duration it takes for the motor to accelerate from rest to its rated speed when there is no mechanical load applied to the shaft. It characterizes the time required for the motor to reach its operating speed under no load conditions. Starting Time For Induction motor on No Load is denoted by ts symbol.

How to calculate Starting Time for Induction Motor under No Load using this online calculator? To use this online calculator for Starting Time for Induction Motor under No Load, enter Mechanical Time Constant of Motor m), Slip (s) & Slip at Maximum Torque (sm) and hit the calculate button. Here is how the Starting Time for Induction Motor under No Load calculation can be explained with given input values -> 1.203632 = (-2.359/2)*int((0.83/0.67+0.67/0.83)*x,x,1,0.05).

FAQ

What is Starting Time for Induction Motor under No Load?
The Starting Time for Induction Motor under No Load refers to the duration it takes for the motor to accelerate from rest to its rated speed when there is no mechanical load applied to the shaft. It characterizes the time required for the motor to reach its operating speed under no load conditions and is represented as ts = (-τm/2)*int((s/sm+sm/s)*x,x,1,0.05) or Starting Time For Induction motor on No Load = (-Mechanical Time Constant of Motor/2)*int((Slip/Slip at Maximum Torque+Slip at Maximum Torque/Slip)*x,x,1,0.05). Mechanical Time Constant of Motor is defined as the time taken by motor to reach its synchronous speed from standstill under constant accelerating torque equal to the maximum torque of the motor, Slip energy recovery is one of the methods of controlling the speed of an induction motor & Slip at Maximum Torque refers to the slip value at which the motor produces its highest torque while still maintaining a stable operating condition.
How to calculate Starting Time for Induction Motor under No Load?
The Starting Time for Induction Motor under No Load refers to the duration it takes for the motor to accelerate from rest to its rated speed when there is no mechanical load applied to the shaft. It characterizes the time required for the motor to reach its operating speed under no load conditions is calculated using Starting Time For Induction motor on No Load = (-Mechanical Time Constant of Motor/2)*int((Slip/Slip at Maximum Torque+Slip at Maximum Torque/Slip)*x,x,1,0.05). To calculate Starting Time for Induction Motor under No Load, you need Mechanical Time Constant of Motor m), Slip (s) & Slip at Maximum Torque (sm). With our tool, you need to enter the respective value for Mechanical Time Constant of Motor, Slip & Slip at Maximum Torque 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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