scholarly journals Designing an uninterruptible power supply based on the high efficiency push–pull converter

2013 ◽  
Vol 16 (3) ◽  
pp. 29-40
Author(s):  
Phuong Minh Le ◽  
Dzung Quoc Phan ◽  
Huy Minh Nguyen ◽  
Phong Hoai Nguyen
Keyword(s):  
Power Supply ◽  
High Efficiency ◽  
Harmonic Distortion ◽  
Original System ◽  
Uninterruptible Power Supply ◽  
Switching Power ◽  
Wide Range ◽  
Uninterruptible Power ◽  
Modulation Control ◽  
High Level

This paper presents an implementation of the DC/DC push–pull converter for an uninterruptible power supply (UPS). Some classical DC/DC converters are presented and analyzed for pointing out their advantages and drawbacks. Besides, an original system based on a push-pull converter associated with a dynamic modulation control is chosen. The main advantage is the possibility to control the delivered electric power in a wide range from very low level to high level of voltage within the same basic architecture. It can reduce the switching power losses and increase the power conversion efficiency. This paper proposed a new control scheme of the DC/DC converter and DC/AC inverter. The suggested system consists of a high efficiency DC/DC converter and a singlephase DC/AC inverter has been simulated using Matlab/Simulink and designed basing on the DSP TMS320F28027. Both results show high performances of the DC link and AC load voltages, when load changes from zero to rated. The performance of the proposed system has been verified through a 1kW prototype of the system for a 50 Hz/220-230 VAC load sourcing by two series connected batteries of 12V. The proposed DC/DC converter achieves a high efficiency of 93.0%. The system including the DC/DC converter and DC/AC inverter achieves an efficiency of 91.2% and Total Harmonic Distortion (THD) of AC load voltage reached 1.9%.

Wide-Range and High Efficiency Switching Power Supply for Color TV Receivers

1978 ◽  
Vol CE-24 (3) ◽  
pp. 473-480
Author(s):  
Toshio Fujimura ◽  
Takeshi Maruyama ◽  
Kunio Umehara
Keyword(s):  
Power Supply ◽  
High Efficiency ◽  
Switching Power Supply ◽  
Switching Power ◽  
Wide Range

scholarly journals CONCEPTUAL DESIGN FOR MITIGATING HARMONIC DISTORTION ON ESP INSTALLATION: CASE STUDY IN KAJI SEMOGA FIELD, MEDCO E&P INDONESIA

Sutet ◽  
2018 ◽  
Vol 7 (1) ◽  
pp. 19-23
Author(s):  
Redaksi Tim Jurnal
Keyword(s):  
Power Supply ◽  
Harmonic Distortion ◽  
Phase Shifting ◽  
Submersible Pump ◽  
Variable Speed ◽  
Uninterruptible Power Supply ◽  
Harmonic Filter ◽  
Electrical Submersible Pump ◽  
Uninterruptible Power

Meningkatnya penggunaan beban non-linier dalam instalasi kelistrikan mengakibatkan masalah distorsi harmonik dalam sistem kelistrikan industrial dan komersial.Beban non-linier yang banyak digunakan dalam operasi minyak dan gas bumi adalah variable speed drive (VSD) dan uninterruptible power supply (UPS). PT Medco E&P Indonesia memberdayakan Electrical Submersible Pump (ESP) sebagai metode produksi minyak bumi yang diterapkan di lapangan produksi Kaji Semoga. Instalasi ESP dilengkapi dengan VSD sebagai pendukung asut dan pengendali kecepatan motor penggerak ESP demi mencapai besaran produksi minyak bumi. Operasi VSD membangkitkan gangguan harmonik yang dapat mengganggu sistem daya listrik seperti panas berlebih dari peralatan listrik, kegagalan prematur pada peralatan berputar dan pembatas arus yang gagal kerja. Pada umumnya untuk mengendalikan masalah ini, harmonic filter dipasang untuk mengkompensasi distorsi harmonik. Instalasi harmonic filter berkontribusi pada biaya pemeliharan kehandalan sistem daya listrik di lapangan produksi Kaji Semoga. Makalah ini menjabarkan metode-metode alternatif untuk mengendalikan distorsi harmonik dalam sistem distribusi daya lsitrik termasuk pemasangan harmonic filter. Metode untuk mengendalikan distorsi harmoniktersebut termasuk penggunaan trafo phase-shifting. Metode lain untuk menanggulangi distorsi harmonik adalah merancang ukuran konduktor selain sebagai proteksi arus beban-lebih juga bisa menerima pengaruhharmonic pada arus beban. Metode-metode alternatif ini bisa mengurangi biaya dari usaha menghilangkan distorsi harmonik secara signifikan.

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