The study of 4 Quadrant Control DC Motor Drive Using Microcontroller Download

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The study of 4 Quadrant Control
DC Motor Drive Using
Microcontroller
Dusit Uthitsunthorn, Tawatchai simma,
Kasem Nuaekaew and Vorachat Narapai
The study of 4 Quadrant Control DC
Motor Drive Using Microcontroller
Dusit Uthitsunthorn was born in Buriram,
Thailand, in 1978. He received the Master
of Electrical Engineering degree from King
Mongkut’s University of Technology North
Bangkok (KMUTNB), Thailand in 2007.From 20072008 he was working for the Ubonratchathani
Rajabhat University. Currently he is a teacher of the
department in Electrical Engineering at Rajamangala
University of Technology Isan, Khon Kaen campus.
His research interest includes control system, power
electronics and electrical control drive.
Objectives
For students to learn practically by them
self.
 To bulid the basis in controlling DC
machine as small-sized.
 To increase efficiency of teaching and
learning in electrical machine courses.
 May be applied in the real life.

DC Motor Drives
DC. Motor Equation
+
Va = E a + R a I a
Ia =
Va - Ea
Ra
E a = kF wm
Ra
Va
Ea=kFwm
-
+
Tem = kF I a
M
-
wm
Tem
wm =
(
Ia R a
Va kF
)
DC Motor Drives
DC motor speed control using Switching Control or PWM
Voltage
Source
Vs
Vout
Diode
rectifier
%Dut y cycle =
Filter
capacitor
P ulse Widt h
x 100
Cycle
Vout = % Duty cycle x Vs
Full-bridge
DC-DC
converter
PWM
Pluse-width-modulation
M
Power Electronic converter
H-bridge converters circuit
Vcc
A
ON
G
Q1
D1
D3
Q3
G
D2
Q2
G
OFF
B
ON
D
M
C
OFF
G
Q4
D4
Power Electronic converter
H-Bridge four quadrant control circuit
The motor operating switch
The motor operation
A
B
C
D
Forward motoring
1
0
0
1
Forward Breaking
0
0
1
0
Reverse motoring
0
1
1
0
Reverse Breaking
0
0
0
1
Vcc
A
ON
G
Q1
D1
D3
Q3
G
D2
Q2
G
OFF
B
ON
D
M
C
OFF
G
Q4
D4
Power Electronic converter
The function 4 Quadrant DC Motor
Speed
Ia
Ia
Ra
Va
Ra
Va
Ea
Va < Ea
Ea
Va > Ea
Forward Breaking
Forward Motoring
Reverse Motoring
Reverse Breaking
Ia
Ia
Ra
Va
Ea
Va > Ea
Ra
Va
Ea
Va < Ea
Torqe
The Experimental results
Pulse-width-modulation with 1st quadrant
CH1
CH2
The Pulse-width-modulation duty cycle 20 %
The Experimental results
Pulse-width-modulation with 1st quadrant
CH1
CH2
The Pulse-width-modulation duty cycle 60 %
The Experimental results
Pulse-width-modulation with 1st quadrant
CH1
CH2
The Pulse-width-modulation duty cycle 100 %
The Experimental results
Pulse-width-modulation with 2nd and 4th
CH1
CH2
The Pulse-width-modulation duty cycle 100 %
The Experimental results
Pulse-width-modulation with 3rd quadrant
CH1
CH2
The Pulse-width-modulation duty cycle 20 %
The Experimental results
Pulse-width-modulation with 3rd quadrant
CH1
CH2
The Pulse-width-modulation duty cycle 60 %
The Experimental results
Pulse-width-modulation with 3rd quadrant
CH1
CH2
The Pulse-width-modulation duty cycle 100 %
Conclusion and recommend
The cycle speed of DC motor can be
varied by the duty cycle of PWM signal.
 The controller can operate all four quadrant
of DC motor.
 Regenerative breaking can be studied easily
by changing to be a bigger size motor.

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