THD minimization for Z-source-based inverters with a novel sinusoidal PWM  switching method

Davood GHADERI

Makale detayları

THD minimization for Z-source-based inverters with a novel sinusoidal PWM switching method

Yazarlar:

Davood GHADERI

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2019 Vol.27 Issue 4, pp.3098-3113

Belge Tipi:

Makale

Yayın Tarihi:

7/2019

Belge Dili:

İngilizce

Document ID (Org No.):

2000733897

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632

Özet:

 

This paper presents a modified sinusoidal pulse width modulation (SPWM) switching method for one-phase  and investigated two-phase impedance-source inverter structures. The proposed structure generates pulses for a quasi-  Z-source converter and this block produces a unilateral voltage sine wave in the block's output. This signal is applied  to the inverter as its input wave. For this purpose, the novel SPWM method is proposed for power switches while  being switched complementarily. Two power switches are used in the structure to generate the pure sinusoidal output  voltage and to minimize total harmonic distortion (THD), which is an essential parameter in inverter design. The results  show that the proposed method generates the pure sinusoidal voltage and current signals for resistive and inductive  loads and pure voltage and improved current waves for capacitive loads in comparison with existing techniques, since  the THD of the output voltage and current signals is strongly affected by the dynamic loads. This method leads to  final cost improvement and reduction of the size of the system with fewer number of components, which are essential  parameters for renewable energy resource applications. A mathematical model is validated with the 2017a version of  MATLAB/Simulink and 1.51% and 1.33% THD values are reported for low and high power loads, respectively, in the  one-phase structure and 0.95% and 0.87% in the two-phase system. Finally, a 120 W prototype has been implemented  and tested. A sine-wave with 620 Vac peak to peak amplitude and 50 Hz frequency has been gained in the inverter?s  output and the quality of the voltage and current waveforms has been evaluated for different two 1.8 kΩΩ\Omega and 600 ΩΩ\Omega   resistive loads in the one-phase structure. Experimental results confirm all mathematical and simulation results.

Makale detayları

THD minimization for Z-source-based inverters with a novel sinusoidal PWM switching method

Yazarlar: Davood GHADERI

Yayıncı: TUBITAK

Dergi: Turkish Journal of Electrical Engineering and Computer Science 2019 Vol.27 Issue 4, pp.3098-3113

Belge Tipi: Makale

Yayın Tarihi: 7/2019

Belge Dili: İngilizce

Document ID (Org No.): 2000733897

Sıklık: İki Aylık

eISSN: 1303-6203

pISSN: 1300-0632

Sayı

Yazarlar:

Davood GHADERI

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2019 Vol.27 Issue 4, pp.3098-3113

Belge Tipi:

Makale

Yayın Tarihi:

7/2019

Belge Dili:

İngilizce

Document ID (Org No.):

2000733897

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632