Define Motor Parameters

Step 1

Click Define Motor Parameters to obtain an estimate of the motor circuit parameters using the name-plate values and the speed-torque curve of the motor. Notes provided in the upper left corner of this window are instructions on how to use this tool to derive the motor parameters.

The Define Induction Motor Parameters dialog box is shown. A spreadsheet on the left displays the specifications for speed and torque percentages, which are graphed on the Step 1 tab on the right.

Figure 1: Define Induction Motor Parameters-Step 1

Option Descriptions
Option Description
Load image Load image

Enables you to load an image of the motor curve to be digitized.

Set max torque

Enter motor maximum torque in %.

Flip speed axis

Curve axis can be flipped to match the manufacturer.

Step 2

The Define Induction Motor Parameters dialog box is shown. A spreadsheet on the left displays the specifications for parameters and data, which are graphed on the Step 2 tab on the right.

Figure 2: Define Induction Motor Parameters-Step 2

Option Descriptions
Option Description

Gravity Points

 The gravity points are movable points used to optimize the derived torque speed curve to the actual torque speed curve.

Flip speed axis

 Curve axis can be flipped to match manufacturer.

Minimize

 The Minimize button attempts to reduce the error.

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