1. DUAL CONVERTER WITH POWER TRANSISTOR AND SPEED CONTROL FOR DC MOTOR Prepared by AmenaAteeli & Bara`ya`qoub Supervisor Dr. JAMAL KHAROUSHA A PROJECT INTRODUCTION REPORT IN IELECTRICAL ENGINEERING An-najah National University Nablus-Palestine 2010

2. PROJECT OBJECTIVES • Operation the machine in four quadrants. • Closed loop speed control of separately dc machine. • Speed control with tachogenerator and cascade current control. • On the other hand, the project will study how it can be interface the converter with PIC Controller, and the electronic circuits for this aim, also the software to generate the pulses.

3. PROJECT IMPORTANCE • Saving electrical energy by regenerative the energy to the network when the machine operation in generating mode. • Ability operation the machine in different modes which get flexibility to the system.

4. Power Supply Controller Power Circuit Converter Protection PIC controller Interfacing Circuit DC Machine General Block Diagram :

5. Power Supply: • We need two power supply 1.To feed Power transistor circuit to operate the circuit.

6. 2.To feed the control circuit:

7. Converter with Power Transistors • In this converter we use the DC chopper (Class E) techniques to control of voltage armature.

8. Operation in Four Quadrant

9. Interface circuit:

11. Status The Pins and Operation the devices

12. pic

13. Flow Chart

14. THE END