ABSTRACT:
According
to the disadvantages as large torque ripple of square wave drive brushless DC motor
control system, this paper adopted the sine wave drive the permanent magnet
brushless DC motor control system based on the space vector pulse width
modulation (SVPWM) control method. The simulation model of space vector pulse
width modulation control method of the rotated speed of brushless DC motor and
current double closed-loop control system is simulated and analyzed in MATLAB/SIMULINK.
The simulation results have verified the reasonability and validity of the simulation
model.
KEYWORDS:
1. Brushless
DC motor
2. Modeling
and simulation
3. Space vector pulse width modulation (SVPWM)
SOFTWARE: MATLAB/SIMULINK
BLOCK DIAGRAM:
Figure 1 The overall system block diagram
of BLDCM control system
EXPECTED SIMULATION RESULTS:
Figure 2 Speed information
Figure 3 Torque waveform
Figure 4 The motor stator three-phase
current waveform
Figure 5 Phase A current use PWM and SVPWM
control
CONCLUSION:
In this paper, the SVPWM control of BLDCM
simulation model is established based on the MATLAB/SIMULINK, and used the
classic speed, current double closed-loop PI control algorithm. From the output
waveform, it can be seen the system corresponding speed fast, quickly achieve steady
state. Plus load torque at t=0.1s, the speed happen fell but return to equilibrium
state at soon. Three phase stator current waveform as nearly as sine wave. The
simulation results show that the SVPWM control of BLDCM has good static and
dynamic characteristics.
REFERENCES:
[1]Wu
Quan-li, Huang Hong-quan. Simulation study of penmanent maagnet brushless DC
motor based on PWM control. Electrical switches, Vol.5 (2010), p. 39-41
[2]Ma
Ruiqing, Deng Junjun. Research on characteristic of sinusoidal current driving
method for
BLDCM
with hall position sensor. Micro-motor, Vol.7 (2011), p. 59-61
[3]Wang
Shuhong. A control strategy of PMDC brushless motor based on SVPWM. Automation
Expo,
Vol.10 (2008), p. 66-68
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Jianqi. SVPWM control for torque ripple attenuation of PM brushless DC motors. Small
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Hu.180-Degree Commutation System of Permanent Magnet Brushless DC Motor Drive Based
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