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PMDC Motor Design Software

Yeadon Energy Systems, Inc:PMDC Software Demo Training

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PMDC Motor Design Software Training

This material is the property of Yeadon Energy Systems, Inc. and may not be reproduced in any form without the prior written consent of Yeadon Energy Systems, Inc.

Copyright 2008 Yeadon Energy Systems, Inc. All Rights Reserved.

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Presented by William Yeadon P.E.

Yeadon Energy Systems, Inc514 W. Maple StreetIron River, MI. 49935

906-265-7937yes@yeadoninc.com

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PMDC Program FeaturesEasy and Logical input of motor dimensions and material properties that make up the motor.Each major part has its own form.Output forms have logical groups of data.Major motor components are shown on the next slide.New materials may be easily added for steels, magnets and brushes.English or metric units may be selected from the master form bar.

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PMDC motor construction

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Open the program and a master form appears.On the master form there are sub forms that allow for the input of all necessary data to predict motor performance.

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Program Input Forms

Click on buttons to bring up the appropriate form. For instance click on Arm to show armature input form.

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Armature InputThe next slide shows the armature input requirements.Placing your cursor over the armature variable will bring up a written definition of the variable.Clicking on the diagram box will bring up a drawing of the lamination showing what the variables refer to.Round or square bottom slots may be selected.Steel type may be selected from the drop down menu.

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Armature Input Form

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Brush Input

The same process is used for Commutator and brush input as is used for armature and all other input forms.Round or flat commutators may be selected.Brush types and characteristics are inputted in the main form.

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Commutator and Brush Data- Brushes may be selected from the drop down menu.

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Housing Data- Material type is selected from the drop down menu.

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Internal Losses Form

This form allows one to put in the friction and windage losses that a motor normally encounters.One may also input the thermal characteristics of the motor components so that the program may predict the motor temperature rise.

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Internal Loss Parameters – Static Friction and Dynamic Windage Data – External Load Inertia – Material Thermal Conductivity

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Magnet Data - Select Magnet Type From Menu.

Rectangular Segments

Arc Segments

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Electrical Data- Here the winding type, wire size and turns are inputted.

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Shaft Information

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Load Speeds

Detailed performance data will be calculated and displayed at these speeds.

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Economic Parameters- Filling in this form will cause the program to keep track of and print out the motor material cost.

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Create New Lamination Material

Enter magnetization and induction properties for the steel here

Enter core loss properties for the steel here

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Edit Existing Lamination Material

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Create New Magnet Material

Enter normal curve data here Check this box and enter intrinsic demagnetization data here

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Edit Existing Magnet Material

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Create a New Brush Data File

Brush information can be inputted here.

This data can be either calculated from the PMDC software or taken from the brush manufacturer

After the data is entered in the left column, hit the Calculate button to calculate the brush curve.

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Edit an Existing Brush File

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Design Notes- This space is for the designer to keep notes.

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OUTPUT PARAMETERS

The next group of slides show the program output.The forms show data in logical groupings that designers are usually interested in seeing.

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No Load Performance- This shows the unloaded motor data including the true no load speed and the actual no load speed.

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Locked Rotor Data- This shows the motor starting information.

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Load Speed Output Data- This shows the power out, amps, torque, losses, commutation voltage and temperature rise at two selected speeds.

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Mechanical Output Data- This shows the weights and inertias of the major components.

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Winding Information- This shows the effective conductors, resistance and slot fill.

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Magnetic Circuit Data

The next slide shows all the flux densities and mmf drops of the magnetic circuit as well as the demagnetization current of the motor.This allows the designer to make the necessary adjustments to utilize the active material in the best manner.

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Magnetic Circuit Data

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Motor Constants- This shows all the important constants as well as servo parameters.

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Overall Cost Data- This prints out the material cost of the motor. Changing the motor design will cause the new cost to be printed here.

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Cross Section Views- This view allow the designer to see the relative proportions ofthe motor components as it is designed.

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Speed – Torque, Current Graph- when the graph is active placing the cursor on it will show the speed, torque, current, efficiency and power at that point