Passive input current ripple cancellation in three-phase discontinuous conduction mode rectifiers

2002 ◽  
Author(s):  
P. Barbosa ◽  
F. Canales ◽  
F. Lee
Keyword(s):  
Input Current ◽  
Discontinuous Conduction Mode ◽  
Three Phase ◽  
Ripple Cancellation ◽  
Conduction Mode ◽  
Current Ripple

scholarly journals Paralel Flyback Converter sebagai PFC pada Lampu LED menggunakan Fuzzy Type-2

2021 ◽  
Vol 9 (4) ◽  
pp. 938
Author(s):  
MOH. ZAENAL EFENDI ◽  
DEWI KUSUMA WATI ◽  
LUCKY PRADIGTA SETIYA RAHARJA
Keyword(s):  
Power Factor ◽  
Power Factor Correction ◽  
Input Current ◽  
Voltage Source ◽  
Flyback Converter ◽  
Discontinuous Conduction Mode ◽  
Full Wave ◽  
Conduction Mode ◽  
Continuous Conduction Mode

ABSTRAKPeralatan elektronika umumnya memerlukan catu daya berupa sumber tegangan DC yang berasal dari sumber tegangan AC 220 V yang disearahkan menggunakan penyearah gelombang penuh. Pemasangan filter kapasitor pada sisi output penyearah menyebabkan bentuk gelombang arus masukan terdistorsi sehingga menimbulkan arus harmonisa yang mengakibatkan nilai faktor daya menjadi rendah. Artikel ini membahas mengenai paralel flyback konverter sebagai PFC (Power Factor Correction) pada lampu LED 36 V/60 W menggunakan algoritma fuzzy type-2. Flyback konverter pertama sebagai regulator tegangan DC bekerja dalam kondisi CCM (Continuous Conduction Mode). Flyback konverter kedua sebagai PFC bekerja dalam kondisi DCM (Discontinuous Conduction Mode) sehingga konverter bersifat resistif. Hasil simulasi menunjukkan bahwa paralel flyback konverter dapat memperbaiki faktor daya dari 0.597 menjadi 0.903 dan dapat menjaga tegangan keluaran konstan sebesar 36 V menggunakan algoritma fuzzy type-2 serta arus input yang dihasilkan memenuhi standar internasional hamonisa IEC61000-3-2 kelas C.Kata kunci: PFC, flyback konverter, IEC61000-3-2, lampu LED, fuzzy type-2 ABSTRACTElectronic equipment generally requires a DC voltage source that comes from a rectified 220 AC voltage source using full-wave rectifier. Installing capacitor filter on the output of rectifier makes the input current waveform becoming distorted that cause harmonic current which results in low power factor value. This article discusses parallel flyback converter as PFC (Power Factor Correction) on 36 V/60 W LED lamp using fuzzy type-2 algorithm. The first flyback converter as voltage dc regulator works in CCM (Continuous Conduction Mode). The second flyback converter as PFC works in DCM (Discontinuous Conduction Mode) to make the resistive converter. The simulation results shows the parallel flyback converter can improve the power factor from 0.597 to become 0.903 and can maintain a constant output voltage of 36 V using fuzzy type-2 algorithm and the input current meets the international harmonics standard of IEC61000-3-2 class C.Keywords: PFC, flyback converter, IEC61000-3-2, LED lamp, fuzzy type-2

An improved integrated control modeling of a high-power density interleaved non-inverting buck-boost DC-DC converter

2018 ◽  
Vol 15 (6) ◽  
pp. 688-699 ◽  
Author(s):  
Mohsen Karimi ◽  
Mohammad Pichan ◽  
Adib Abrishamifar ◽  
Mehdi Fazeli
Keyword(s):  
Power Density ◽  
High Power ◽  
Integrated Control ◽  
Input Current ◽  
High Power Density ◽  
Parallel Operation ◽  
Content Type ◽  
Two Stages ◽  
Conduction Mode ◽  
Current Ripple

PurposeThis paper aims to propose a novel integrated control method (ICM) for high-power-density non-inverting interleaved buck-boost DC-DC converter. To achieve high power conversion by conventional single phase DC-DC converter, inductor value must be increased. This converter is not suitable for industrial and high-power applications as large inductor value will increase the inductor current ripple. Thus, two-phase non-inverting interleaved buck-boost DC-DC converter is proposed.Design/methodology/approachThe proposed ICM approach is based on the theory of integrated dynamic modeling of continuous conduction mode (CCM), discontinuous conduction mode and synchronizing parallel operation mode. In addition, it involves the output voltage controller with inner current loop (inductor current controller) to make a fair balancing between two stages. To ensure fast transient performance, proposed digital ICM is implemented based on a TMS320F28335 digital signal microprocessor.FindingsThe results verify the effectiveness of the proposed ICM algorithm to achieve high voltage regulating (under 0.01 per cent), very low inductor current ripple (for boost is 1.96 per cent, for buck is 1.1) and fair input current balance between two stages (unbalancing current less than 0.5A).Originality/valueThe proposed new ICM design procedure is developed satisfactorily to ensure fast transient response even under high load variation and the solving R right-half-plane HP zeros of the CCM. In addition, the proposed method can equally divide the input current of stages and stable different parallel operation modes with large input voltage variations.

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