A new improved boost converter with ripple free input current using coupled inductors

Cheng, D.K.W.; Liu, X.C.; Lee, Y.S.

doi:10.1049/cp:19980592

Cited by 34 publications

(18 citation statements)

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“…The frequency doubling characteristic of the interleaved structure can significantly reduce the output capacitor value and the input current ripple of the converter, but the quality of input power supply will still be deteriorated by the input current ripple especially in the large current applications [11]. Coupled inductor IBC proposed in [12]- [13] has used a coupled inductor to achieve the input current ripple cancellation, and their applications can be found in [14]. However the leakage inductance of the coupled inductor increases the current stress of the output diodes, introducing extra EMI problems.…”

Section: Literature Reviewmentioning

confidence: 99%

Interleaved High Step up Dc-Dc Converter with PID Controller

Goudanaikar¹,

Sundar²

2014

IJAREEIE

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-Multiphase dc-dc converters are widely used in modern power electronics applications due to their advantages over single-phase converters. Such advantages include reduced current stress in both the switching devices and passive elements, reduced output current ripple, increase in output voltage and overall efficiency and so on. The output current ripple of a converter can be significantly reduced by virtue of the interleaving connection. This paper presents a design and simulation of an interleaved high step up DC-DC converter with PID controller. The control strategy of the converter is based on a Proportional-Integral-Derivative (PID) controller. The proposed converter achieves a high step-up voltage-conversion ratio without extreme duty ratio and the numerous turns-ratios of a coupled inductor and reduction in the input current ripple with the efficiency higher than 97%.The PID controller is used in the feedback to reduce the rise time and steady state error. The proposed interleaved high step up DC-DC converter model along with PID controller is modeled using SIMULINK and the simulation results are presented in this paper to authenticate the proposed scheme.KEYWORDS:-Interleaved boost, high step up DC-DC converter, PID controller. I.INTRODUCTIONInterleaved connection is a method in which the additional circuit is added in between the input and output of the main circuit in order achieve the increase in overall efficiency and output voltage of the converter and also reduce in input ripple and output ripple.Interleaving is not a new technique earlier it was only used in the buck converter topology and there have been many papers describing the use of multiphase buck converters, especially for high-performance high-power applications [1, 2, and 3]. However, all the advantages of interleaving, such as higher efficiency, increase in output voltage and reduced input and output ripple for voltage/current, are also realized in the boost topology. Most of the controllers used in buck applications apply equally well when configured for use in an interleaved boost application. In [4] multi-phase buck converter controlled by PID is presented. II. LITERATURE REVIEWNow a day's the interleaved high step up DC-DC converter has been widely used in photovoltaic generation, electric vehicles and power factor correction due to its high power density and fast dynamic response [5]- [6]. The input current ripple of the conventional boost converter is inversely proportional to its input inductor value [7], which means that a large inductor value will result in low input current ripple; however, a large inductor value increases the total weight of a capacitor with low ESR must be used [8]. Interleaved parallel structure has been applied in many high power density applications [9]-[10] in order to minimize the input current ripple, reduce the passive component size, improve the transient response and increase the power level. The frequency doubling characteristic of the interleaved structure can significantly reduce the o...

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Section: Literature Reviewmentioning

confidence: 99%

Interleaved High Step up Dc-Dc Converter with PID Controller

Goudanaikar¹,

Sundar²

2014

IJAREEIE

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“…This output inductor turns the dc voltage source into a current source for driving the LED load. As an alternative, this output inductor can be replaced by a current ripple cancellation circuit, which consists of a coupled inductor and a capacitor [19][20][21]. This study focuses on the LED driver performance.…”

Section: B New Conceptmentioning

confidence: 99%

A novel passive off-line light-emitting diode (LED) driver with long lifetime

Hui

Xue

et al. 2010

2010 Twenty-Fifth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)

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Abstract-This paper describes a patent-pending passive offline LED driver that has no semiconductor switches, electrolytic capacitors, auxiliary power supply and control board. It can provide a fairly smooth current from the ac mains to drive LED strings. The new circuit has the advantages of high input power factor, high energy efficiency and luminous efficacy, long lifetime, stable luminous output and high robustness against extreme weather conditions. In addition, over 90% of the driver material is recyclable, leading to reduction of electronic waste. It is particularly suitable public LED lighting systems such as road lighting systems. Experimental results based on a 50W system are included in the paper to confirm the validity of the proposal. Due to the circuit simplicity, an energy efficiency exceeding 93.6% has been achieved.

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“…Therefore, an efficient method to obtain soft-switching operation of the switches and to alleviate the reverse recovery problem of the power diode is required. In [4], a new boost converter with a ripple free input current was suggested. In the new boost converter, an extra LC circuit with coupled inductors was utilized.…”

Section: Introductionmentioning

confidence: 99%

“…Mode 5 [t 4 , t 5 ]: At t 4 , the voltage v Q2 across the upper switch Q 2 becomes zero and the body diode D Q2 is turned on. Then, the gate signal is applied to the switch Q 2 .…”

Section: Introductionmentioning

confidence: 99%

Zero-Voltage-Switching Boost Converter Using a Coupled Inductor

2011

Journal of Power Electronics

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This paper presents a zero-voltage-switching (ZVS) boost converter using a coupled inductor. It utilizes an additional winding to the boost inductor and an auxiliary diode. The ZVS characteristic of the proposed converter reduces the switching losses of the active power switches and raises the power conversion efficiency. The principle of operation and a system analysis are presented. The theoretical analysis and performance of the proposed converter were verified with a 100W experimental prototype operating at a 107 kHz switching frequency.

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A new improved boost converter with ripple free input current using coupled inductors

Cited by 34 publications

References 0 publications

Interleaved High Step up Dc-Dc Converter with PID Controller

Interleaved High Step up Dc-Dc Converter with PID Controller

A novel passive off-line light-emitting diode (LED) driver with long lifetime

Zero-Voltage-Switching Boost Converter Using a Coupled Inductor

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