Modified LCLC-type series resonant converter with improved performance

Dual-Input Single-Output Isolated Resonant Converter with Zero Voltage Switching

“…However, the tertiary winding parameters (L p & C p ) are considered on the primary side of HF transformers for analysis purposes. The secondary side diode rectifier circuit including load R L is represented with AC resistance (R ac ), and is written as R ac = K • R L given in [10]. Where K = 8/π 2 and R L = n 2 R L , where n = n 1 /n 2 .…”

“…The proposed converter uses an modified LCLC series resonant tank circuit [9,10], and is operated above the resonant frequency to achieve ZVS during wide load variation. The proposed structure with minimum switch count and ZVS operation has a considerable reduction in semiconductor losses.…”

“…In resonant converters, they allow ZCS or ZVS with smooth waveforms of voltage and currents. Various resonant circuit configurations are available in the literature; they are mainly categorized into Series resonant, Parallel resonant, Series-Parallel resonant (LCLC) converters [10]. In the proposed dual input converter, an modified LCLC series resonant tank circuit is employed due to its better voltage regulation characteristics.…”

Modular‐structured resonant converter for multilevel converters in micro grids

“…This results in need for significant DC-DC power conversion application for efficient extraction of energy from the intermittent sources. [13][14][15] In modular approach, two or more low power converter module outputs are connected in series and inputs are connected to same DC source in parallel to meet the higher power demand. Innumerable single-ended converters such as boost converter incorporated with high-frequency (HF) transformer to attain higher voltage are introduced in literature.…”

“…Since LCLC resonant topology is a good candidate for high voltage and high power application, it is widely used in different industrial applications such as electrical vehicle battery chargers and high frequency AC distribution owing to wider load range of operation, higher efficiency, and good power density. [13][14][15] In modular approach, two or more low power converter module outputs are connected in series and inputs are connected to same DC source in parallel to meet the higher power demand. 16 Single-phase and three-phase full bridge or multilevel diode-clamped grid-connected inverters require DC link voltages of 380 to 400 V and 760 V or higher is preferred.…”