Transcript Amena - An-Najah National University

DUAL CONVERTER WITH POWER
TRANSISTOR AND SPEED CONTROL
FOR DC MOTOR
Prepared by
Amena Ateeli
&
Bara`ya`qoub
Supervisor
Dr. JAMAL KHAROUSHA
A PROJECT INTRODUCTION REPORT
IN
IELECTRICAL ENGINEERING
An-najah National University
Nablus-Palestine
2010

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.


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.
Power Supply
Controller
PIC
controller
Power Circuit
Converter
Interfacing
Circuit
Protection
DC
Machine
 We need two power supply
1.To feed Power transistor circuit to operate the
circuit.
 In this converter we use the DC chopper
(Class E) techniques to control of voltage
armature.
State the machine
F.Motor
PIC number port Pin16
Operation
Pin17
R.Motor
F.generator R.generator
Pin25 Pin26 ------- ------- ------- -------
Q1
Q2
Q3
Q4
D1
D2
D3
D4
State logic
1
1
0
0
The diode used to
State logic
0
0
1
1
Protection the transistors
State logic
0
0
0
0
transistor
D1
D2
Not flow
current
State logic
0
0
0
0
Not flow
current
D3
D4