Comparative study of SVPWM (space vector pulse width modulation) & SPWM (sinusoidal pulse width modulation) based three phase voltage source inverters for variable speed drive

Penelitian ini mengimplementasikan perancangan sistem kendali Variable Speed Drive (VSD) pada Inverter 3 fasa yang dilakukan dengan software Power Simulator kedalam IC terprogram mikrokontrol tipe AT89S52. IC mikrokontrol AT89S52 akan dibangkitkan sinyal sinusoidal 3 fasa sebagai sinyal referensi pada inverter 3 fasa yang digunakan untuk mengendalikan motor induksi 3 fasa dengan metode Sinusoidal Pulse Width Modulation (SPWM). Metode pembangkitan sinyal 3 fasa didalam mikrokontroler AT89S52 ini dilakukan dengan cara look up table yaitu pengambilan data sampling dikrit 256 data dari software power simulator kedalam port input. Pada setiap port keluaran mikrokontroler membentuk satu pola quantisasi sinyal gelombang satu fasa, untuk membangkitkan gelombang 3 fasa dilakukan dengan mengalamatkan data keluaran pada ketiga port keluaran. Dengan menggunakan Digital to Analog Converter (DAC) maka pola quantisasi yang dihasilkan oleh setiap port mikrokontroler diubah menjadi sinyal analog berbentuk sinusoidal. Rangkaian multiplier pada sistem ini digunakan untuk menghasilkan sinyal sinusoidal yang dapat diatur frekuensi dan amplitudonya secara bersama-sama. Data pengujian menunjukkan perubahan tegangan dan frekuensi dengan rasio 1 : 5,2 dan perbandingan tegangan fasa netral dengan tegangan keluaran antar fasa menunjukkan nilai perbandingan 1 : 1,733 atau 1: akar 3.

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Carrier-Based PWM Technique for Inverter-Fed Multiphase Induction Motor

International Journal of Electrical and Computer Engineering (IJECE) ◽

10.11591/ijece.v6i5.10754 ◽

2016 ◽

Vol 6 (5) ◽

pp. 1967

Author(s):

Jyothi B ◽

M.Venugopala Rao

Keyword(s):

Induction Motor ◽

Pulse Width ◽

Pulse Width Modulation ◽

Voltage Source ◽

Matlab Software ◽

Third Harmonic ◽

Voltage Source Inverters ◽

Three Phase ◽

Simulation Results ◽

Multiphase Machine

<p>Multiphase (more than three phases) is very much popular due to their eminent features compared to conventional three-phase counter parts. In order to drive the multiphase machine, it requires same phase input w.r.t the no of phases at the output. This paper mainly focuses on five phase, because even after failure of one phase, the performance does not degraded much. Voltage source inverters (VSIs) are used to feed the induction motor. voltage source inverters (VSIs) switches are ON and OFF precisely to control the output. In order to implement harmonic waveform characteristic, carrier based PWM (pulse width modulation) is performed. By using with and without third harmonic injection machine torque is highly improved. Using MATLAB software, the simulation results are presented in the form of computer traces and high traded performance of the machine are discussed.</p>

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Comparative Study of SPWM and HEPWM Techniques for Photovoltaic Inverter

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1115.555 ◽

2015 ◽

Vol 1115 ◽

pp. 555-559

Author(s):

Douadi Bendib ◽

F. Akel ◽

M. Chikh ◽

C. Larbes ◽

M. Laour ◽

...

Keyword(s):

Pulse Width Modulation ◽

Evaluation Study ◽

Voltage Source ◽

Phase Voltage ◽

Voltage Source Inverter ◽

Pv Array ◽

Harmonic Elimination ◽

Output Quality ◽

Three Phase ◽

Sinusoidal Pulse Width Modulation

This paper presents an evaluation study of two pwm techniques applied to a three-phase voltage source inverter supplied by photovoltaic (PV) energy sources. A Pspice-based model of the pv array is developed and tested. The power and currant of the pv array versus the voltage is plotted. Then the pv array is connected to a basic three phase voltage source inverter VSI. Two control techniques are used. The first one is the classic sinusoidal pulse width modulation spwm, which is based on the comparison of two signals, the sinusoidal reference and a triangular carrier. The second one is based on the principle of harmonic elimination. The system is simulated using orcad-pspice, the results are given, discussed and compared based on different performance indices (output quality, thd, frequency).

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