Interleaved Boost Converter with Boost-Type Snubber for PV Power System

2013 ◽  
Vol 284-287 ◽  
pp. 2548-2554
Author(s):  
Sheng Yu Tseng ◽  
Geeng Kwei Chang
Keyword(s):  
Power System ◽  
Conversion Efficiency ◽  
Boost Converter ◽  
Soft Switching ◽  
Battery Charger ◽  
Power Transistor ◽  
Pv System ◽  
Switching Losses ◽  
Interleaved Boost Converter ◽  
Pulsating Current

This paper presents an interleaved boost converter with boost-type snubber for PV system. Paralleled converters working in interleaving manner are adopted to eliminate the pulsating current and increase powering capacity. Boost-type snubber is utilized for soft-switching of the power transistor to reduce switching losses. By switch integration, one boost-type snubber can be shared by N phases of boost converter to effectively reduce component counts and costs. The improved supply characteristics and conversion efficiency make it suitable for charging applications. A prototype for battery charger has been implemented to prove the feasibility of the proposed topology.

A Soft Switching Control Strategy Based on Interleaved Boost Converter for BLDC Motor Drive

2015 ◽  
Vol 6 (3) ◽  
pp. 516
Author(s):  
V. Ramesh ◽  
Y. Kusuma Latha
Keyword(s):  
Control Strategy ◽  
Torque Ripple ◽  
Boost Converter ◽  
Soft Switching ◽  
Motor Drive ◽  
Bldc Motor ◽  
Switching Losses ◽  
Wide Range ◽  
Interleaved Boost Converter ◽  
Auxiliary Circuit

In this paper, Zero-Voltage-Transition (ZVT) two-cell interleaved boost Power Factor Correction (PFC) converter for voltage source Inverter (VSI) fed permanent magnet brushless DC motor (PMBLDCM) drive has been proposed Scheme reduce the torque ripple of BLDC motor drive and also reduce the switching losses of VSI for Which an auxiliary circuit is designed and added to the interleaved boost converter.  For achieving soft switching, only one switch is used in auxiliary circuit which reduces the torque ripple and switching losses. In this proposed control strategy, the DC link voltage is controlled with interleaved boost converter which is proportional to the desired speed of the BLDC motor. In this paper, six switch and four switch VSI is also implemented with interleaved boost converter topology. A comparison is made between the six switch and Four Switch VSI fed PMBLDC Motor drive and Torque Analysis as been done. To validate the proposed work, results are presented. The results showed that proposed converter control strategy operating under soft switching mode improves the efficiency of the drive system with PFC feature in wide range of the speed control.

scholarly journals Photovoltaic Power System with an Interleaving Boost Converter for Battery Charger Applications

2012 ◽  
Vol 2012 ◽  
pp. 1-15 ◽  
Author(s):  
Sheng-Yu Tseng ◽  
Cheng-Tao Tsai
Keyword(s):  
Power System ◽  
Boost Converter ◽  
Maximum Power ◽  
Battery Charger ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Switching Losses ◽  
Power Point Tracking ◽  
Power Point ◽  
Observation Method

This paper proposes a photovoltaic (PV) power system for battery charger applications. The charger uses an interleaving boost converter with a single-capacitor turn-off snubber to reduce voltage stresses of active switches at turn-off transition. Therefore, active switches of the charger can be operated with zero-voltage transition (ZVT) to decrease switching losses and increase conversion efficiency. In order to draw the maximum power from PV arrays and obtain the optimal power control of the battery charger, a perturbation-and-observation method and microchip are incorporated to implement maximum power point tracking (MPPT) algorithm and power management. Finally, a prototype battery charger is built and implemented. Experimental results have verified the performance and feasibility of the proposed PV power system for battery charger applications.

scholarly journals HIGH FREQUENCY BOOST CONVERTER EMPLOYING SOFT SWITCHING AUXILIARY RESONANT CIRCUIT

2013 ◽  
pp. 262-267
Author(s):  
G. NARESH GOUD ◽  
Y. LAKSHMI DEEPA ◽  
G.DILLI BABU ◽  
P. RAJASEKHAR ◽  
N. GANGADHER
Keyword(s):  
Theoretical Analysis ◽  
High Frequency ◽  
Boost Converter ◽  
Soft Switching ◽  
Resonant Circuit ◽  
Switching Converter ◽  
Turn On ◽  
Switching Losses ◽  
Resonant Inductor ◽  
Switching Method

A new soft-switching boost converter is proposed in this paper. The conventional boost converter generates switching losses at turn ON and OFF, and this causes a reduction in the whole system’s efficiency. The proposed boost converter utilizes a soft switching method using an auxiliary circuit with a resonant inductor and capacitor, auxiliary switch, and diodes. Therefore, the proposed soft-switching boost converter reduces switching losses more than the conventional hard-switching converter. The efficiency, which is about 91% in hard switching, increases to about 97% in the proposed soft-switching converter. In this paper, the performance of the proposed soft-switching boost converter is verified through the theoretical analysis, simulation, and experimental results.

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