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DC Motor compound (Short shunt)NAME OF GROUP MEMBERS: (PIC 7)Nursahira Irdiena Bt. Mohd RashidiZue Neisha Farhannah Bt. Zu HazrenNazirul Sarah Bt. IshakNurellyanaelida Bt. HamidiMohamad Aeidil B. HamzahArif Hafizuddin B. Abu Hassan.

1SLIDES OVERVIEWAttendance ListOrganization ChartGroup MembersProblem Statement3KsGeneral View of DC MotorConstruction of DC MotorWorking Principle

2SLIDES OVERVIEW Circuit Diagram (Motor)How to Change the RotationTable of ResultsFormula InvolvesSpeed vs Load Current GraphTorque vs Load Current GraphSpeed vs Torque Graph

Circuit Diagram (Generator)Table of ResultsSpeed vs Output Voltage GraphSpeed vs Output Current GraphOutput Voltage vs Output Current Graph

ApplicationsAdvantages and DisadvantagesConclusion

33ATTANDENCE LISTNO.NAME12.10.1414.10.1417.10.1427.10.141Nursahira Irdiena Bt. Mohd Rashidi////2Zue Neisha Farhannah Bt. Zu Hazren////3Nazirul Sarah Bt. Ishak////4Nurellyanaelida Bt. Hamidi////5Mohamad Aeidil B. Hamzah////6Arif Hafizuddin B. Abu Hassan.////4ORGANIZATION CHART

5GROUP MEMBERS

Nursahira Irdiena Bt. Mohd RashidiPIC 1371071Zue Neisha Farhannah Bt. Zu HazrenPIC 1372806

Nurellyanaelida Bt. HamidiPIC 137942

Nazirul Sarah Bt. IshakPIC 1370947

ARIF HAFIZUDDIN B. ABU HASSANPIC 137853MOHAMAD AEIDIL B. HAMZAHPIC 1374158

8PROBLEM STATEMENTTo analyse the behaviour and characteristics of cumulative short shunt Direct Current (DC) Compound motor on different types of load.

93KSWHAT WE KNOWWHAT WE DONT KNOWWHAT WE NEED TO KNOWMagnetism Rules:(Faradays Rule,Lenzs Rule,Corkscrew Left and Right Hand Rules,Flemings Left Hand Rule)Rating Plate Informations10GENERAL VIEW OF DC MOTOR

11CONSTRUCTION OF DC MOTOR

12BASIC STRUCTURE AND PICTURES!!!!12WORKING PRINCIPLE OF A DC MOTORCoil is powered.Magnetic field is generated around the armature.The left side of the armature is push away from the left magnet and drawn towards the right.Causing rotation when the coil turns through 900,the brushes lost contact with the commutator and the current stops flowing through the coil.The coil keeps turning because of its own momentum.

13CIRCUIT DIAGRAM OF DC COMPOUND MOTOR

DC Compound Motor (Short Shunt)OIU14HOW TO CHANGE THE ROTATION OF THE DC MOTOR

1. Swap the armature current15

2. Swap the stator winding.16Table of Results for DC Short Shunt MotorTORQUE (T)LOAD CURRENT (A)VOLTAGE ( V)SPEED (rpm)POWER IN (W)POWER OUT (W)EFFICIENCY0.100.78150.71120117.5511.739.980.150.85152.71083129.817.0113.10.200.91154.21050140.3221.9915.670.250.98155.71026152.5926.8617.60.301.05157.498165.2731.0418.780.351.08158.3948170.9634.7520.3317FORMULA INVOLVES181. SPEED VERSUS LOAD CURRENT GRAPH19OBESRVATION FOR GRAPH 1The load current drop rapidly as the speed decreases. Comparing to the ideal DC motor graph, the graph we get from the experiment is almost similar. Therefore, the motor we had for the experiment works almost like the ideal motor. 202. TORQUE VERSUS LOAD CURRENT GRAPH21OBSERVATION FROM GRAPH 2.The load current increases proportionally with the torque.Comparing with the other two dc motor, the graph produce by dc compound motor is in the middle between the dc series motor graph and dc shunt motor graph.223. SPEED VERSUS TORQUE GRAPH23OBSERVATION FROM GRAPH 3.The speed decreases proportionally as the torque increases. 24CIRCUIT DIAGRAM OF DC COMPOUND GENERATORDC Compound Motor (Short Shunt)OIU25

26SPEEDTORQUEOUTPUT CURRENTOUTPUT VOLTAGERESISTORPOWER INPOWER OUTEFFICIENCY1920-0.360.13147.5100072.3819.18377.371720-0.320.1115.2100057.6411.52500.351510-0.20.0565100031.633.25973.231300-0.15020.5100020.42001100-0.14010.18100016.1300900-0.1405.94100013.1900400-0.101.5610004.1900200-0.0800.6710001.6800Table of Results for DC Short Shunt GeneratorSPEED vs OUTPUT VOLTAGE GRAPH27SPEED vs OUTPUT CURRENT GRAPH28OUTPUT VOLTAGE vs OUTPUT CURRENT GRAPH29APPLICATIONSPunching Machines30

Mine Hoists31

Rolling Mills

Trolley Bus32

Haulage Gears in LocomotiveADVANTAGES & DISADVANTAGESADVANTAGESDISADVANTAGESHigh starting torque.Good speed regulations at high speed.Can start with huge load and run smoothly.Practically suitable for common application of what we use.Overload will decrease the flux and force up the speed.No speed controlLow starting torqueHigh Starting Current33CONCLUSIONFrom this experiment we can conclude that DC Compound Motor is the best compare to DC Series Motor and DC Shunt Motor.The product produce by this motor is better than both of the motor. 34