Results 11 to 20 of about 24,226 (133)
Half‐bridge flyback converter with lossless passive snubber and interleaved technique
IET Power Electronics, 2018 Hard‐switching flyback converters are widely used in the low power application but suffer from high electromagnetic emissions, current ripples, and low efficiency. To overcome these problems, a half‐bridge flyback converter with a new lossless passive snubber is proposed using an interleaved structure.
Navid Mohammadian +1 more
core +4 more sources
Efficiency Improvement for a DC-DC Quadratic Power Boost Converter by Applying a Switch Turn-off Lossless Snubber Structure Based on Zero Voltage Switching [PDF]
Elektronika ir Elektrotechnika, 2018 So as to keep the converter in small size, high switching frequencies are normally used. As a result, in higher frequencies, switching losses seriously affect the efficiency.
Davood Ghaderi +3 more
doaj +2 more sources
IET Power Electronics, Volume 16, Issue 15, Page 2492-2503, 25 November 2023., 2023 Lithium ion batteries have a very wide application range. They can power up small electronic devices such as smart watches to larger electric vehicles. Due to its varied range of applications, they come in different packaging and in such battery packs, even when individual cell voltage exceeds by a few milli‐volts above 4.2 V, it may result in thermal ...
Umapathi Krishnamoorthy +3 more
wiley +1 more source
IET Power Electronics, Volume 16, Issue 11, Page 1913-1928, 19 August 2023., 2023 (1) This paper proposes a novel interleaved ultra‐large gain zero‐voltage switching (ZVS) DC–DC converter for renewable energy systems. (2) By using coupled inductor (CI) and built‐in transformer (BIT), a high‐voltage gain is achieved. (3) The secondary windings of the CIs are connected in series with the primary winding of the BIT and the secondary ...
Tohid Nouri
wiley +1 more source
An interleaved high step‐down coupled inductor based quadratic DC‐DC converter
IET Power Electronics, Volume 16, Issue 9, Page 1558-1572, 24 July 2023., 2023 A high step‐down DC‐DC buck converter with a coupled‐inductor in its topology is presented in this study. The switching pattern of the proposed converter is interleaved; therefore, the voltage stress on the semiconductors and the components is low since the primary high voltage will be divided between the blocking capacitors on the primary side ...
Reza Pashaie +2 more
wiley +1 more source
Passive lossless snubbers for DC/DC converters [PDF]
APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition, 1998 Passive lossless snubbers are proposed to improve the turn-on and turn-off transients of the MOSFETs in PWM DC/DC power converters. Switching losses and EMI noises are reduced by restricting the di/dt of the reverse recovery current and the dv/dt of the drain-source voltage. The MOSFET operates at ZVS turn-off and near ZCS turn-on.
Tseng, Ching-Jung, Chen, Chern-Lin
openaire +2 more sources
IET Power Electronics, Volume 15, Issue 15, Page 1713-1724, 25 November 2022., 2022 Abstract In this paper, a new ZVT forward converter is presented in which the third winding of the forward converter is utilised to transfer power from the input to the output, recover the energy of the leakage inductance and snubber capacitance, and also provide ZVS condition for the converter switch.
Monireh Ghorbanian +3 more
wiley +1 more source
High performance single stage power factor correction circuit
IET Power Electronics, Volume 15, Issue 2, Page 145-154, 5 February 2022., 2022 Abstract Here, a new single stage single switch soft switching PFC (power factor correction) converter is presented and analysed. The proposed converter combines buck AC‐DC converter and forward DC‐DC converter and applies an auxiliary circuit to eliminate input current dead angle.
Masoud Ghazali, Ehsan Adib
wiley +1 more source
Combining electric vehicle battery charging and battery cell equalisation in one circuit
IET Electrical Systems in Transportation, Volume 11, Issue 4, Page 377-390, December 2021., 2021 Abstract Electric vehicles (EVs) require an onboard battery charger unit and a battery management system (BMS) unit that balances the voltage levels for each battery cell. So far, both units are two completely autarkic power electronics systems. The circuit presented here operates as a battery charger when the EV is connected to the grid and as a ...
Huaxia Zhan +4 more
wiley +1 more source
Soft‐switching non‐isolated high step‐up three‐level boost converter using single magnetic element
IET Power Electronics, Volume 14, Issue 14, Page 2324-2336, 4 November 2021., 2021 Abstract Here, a soft switched three‐level boost converter with high voltage gain is proposed which is suitable for high step‐up applications with wide output power range. In this converter, a ZVT auxiliary circuit is used which provides soft switching in a wide range of output power independent of load variation.
Hamed Moradmand Jazi +7 more
wiley +1 more source