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Simulink È°¿ë PWM ±â¹Ý Àü¾Ð ÀιöÅÍÀÇ µ¿Àû ½½¶óÀ̵ù ¸ðµå Á¦¾î
Simulink È°¿ë PWM ±â¹Ý Àü¾Ð ÀιöÅÍÀÇ µ¿Àû ½½¶óÀ̵ù ¸ðµå Á¦¾î
  • ÀúÀÚWaqas Anjum, Abdul Rashid Husain, Junaidi Abdul Aziz, M. Abbas Abbasi, Hasan Alqaraghuli Àú
  • ÃâÆÇ»ç¾ÆÁø
  • ÃâÆÇÀÏ2020-07-14
  • µî·ÏÀÏ2020-12-21
º¸À¯ 1, ´ëÃâ 0, ¿¹¾à 0, ´©Àû´ëÃâ 7, ´©Àû¿¹¾à 0

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For closed-loop controlled DC-AC inverter system, the performance is highly
influenced by load variations and online current measurement. Any variation in the
load will introduce unwanted periodic error at the inverter output voltage. In
addition, when the current sensor is in faulty condition, the current measurement
will be imprecise and the designed feedback control law will be ineffective. In this
paper, a sensorless continuous sliding mode control (SMC) scheme has been
proposed to address these issues. The chattering effect due to the discontinuous
switching nature of SMC has been attenuated by designing a novel boundary-based
saturation function where the selection of the thickness of boundary is dependent
to the PWM signal generation of the inverter. In order to remove the dependency
on the current sensor, a particle swarm optimization(PSO) based modified observer
is proposed to estimate the inductor current in which the observer gains are
optimized using PSO by reducing the estimation errors cost function. The proposed
dynamic smooth SMC algorithm has been simulated in MATLAB Simulink
environment for 0.2-kVA DC-AC inverter and the results exhibit rapid dynamic
response with a steady-state error of 0.4V peak-to-peak voltage under linear and
nonlinear load perturbations. The total harmonic distortion (THD) is also reduced
to 0.20% and 1.14% for linear and non-linear loads, respectively.

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Á¦ 1Æí : SIMULINK ±âº»Æí
1.1 SIMULINKÀÇ ½ÃÀÛ 1
ºí·ÏÀÇ ¿¬°á 5
ºí·Ï ÆĶó¹ÌÅÍÀÇ ¼³Á¤ 7
½Ã¹Ä·¹À̼ǠÆĶó¹ÌÅÍ (Configuration Parameters)ÀÇ ¼³Á¤ 8
½Ã¹Ä·¹À̼ÇÀÇ ¼öÇà 9
ºí·Ï ÆĶó¹ÌÅÍÀǠǥ½Ã 9
º¹¼ö µ¥ÀÌÅÍÀǠǥ½Ã 11
2.2 µ¿Àû ½Ã¹Ä·¹À̼Ǡ13
ÀÌÂ÷ ¹ÌºÐ¹æÁ¤½Ä 17
¼±Çü »óź¯¼ö ¸ðµ¨ 23
DC ¸ðÅÍÀÇ ½Ã¹Ä·¹À̼Ǡ24
ÇÔ¼ö ºí·ÏÀÇ »ç¿ë 29
Â÷ºÐ¹æÁ¤½Ä(difference equation)ÀÇ ¸ðµ¨¸µ 34
Subsystem(ºÎ½Ã½ºÅÛ)ÀÇ ±¸¼º 37
Á¦ 2Æí : ¿¬±¸³í¹®
Continuous dynamic sliding mode control strategy of PWM based
voltage source inverter under load variations
1. Introduction 41
2. Inverter modeling 43
3. Sliding mode controller design 45
4. Stability analysis 48
5. Observer gain optimization using PSO 49
6. Simulation results and discussion 51
7. Conclusions 57
8. References 59

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