This paper describes a three-phase DC-DC buck/boost converter with the coupled inductor and ZVS soft switching operation under different inductor current conduction modes. Simulation and experimental results are employed compare the performance of the proposed three-phase bidirectional converter in the PV system under battery charge and …
Although the transformer typically consists of two coupled inductors—see Fig. 12.1—its function is principally different from that of the familiar inductance. While the inductance is an energy-storage (and energy-release) circuit element, the ideal transformer, as a new circuit element, never stores any instantaneous energy. It does not ...
Only the leakage flux stores the energy in coupled inductors, so the energy storage for the example shown in Figure 2 is associated with 50nH/phase instead of a 210nH/phase. This implies that a coupled inductor can be fundamentally smaller or/and have a higher current saturation rating, as compared to a discrete inductor.
In this paper, a novel high-efficiency bidirectional isolated DC–DC converter that can be applied to an energy storage system for battery charging and discharging is proposed. By integrating a coupled inductor and switched-capacitor voltage doubler, the proposed converter can achieve isolation and bidirectional power flow. The …
The coupled inductor (CI) bidirectional DC–DC (BDC) converters are becoming popular in energy storage applications owing to high range factor, reduced device stress and high efficient. However, the applications of CI-BDC are limited due to the leakage energy of CI.
ARCHIVESOFELECTRICALENGINEERING VOL.71(1),pp. (2022) 211–225 DOI 10.24425/aee.2022.140206 Dual-mode control magnetically-coupled energy storage inductor boost ...
4 · 1 INTRODUCTION To overcome the major problems of energy deficiency, renewable energy sources act as a vital part of the world. Therefore, energy storage has become an important research topic. As shown in Figure 1, these systems require …
Fig. 1 illustrates the schematic of the switchable-coupled-inductor input-regulating (SCI-IR) Class-E resonant converter, switched inductor and switched capacitor converters. It consists of a power switch (S), a choke inductor (L IN), a parallel capacitor (C P), a resonant capacitor (C R), a collective resonant inductor formed by L 0 and two identical …
Only the leakage flux stores the energy in coupled inductors, so the energy storage for the example shown in Figure 2 is associated with 50nH/phase instead of a 210nH/phase. This implies that a coupled inductor can be fundamentally smaller or/and have a higher current saturation rating, as compared to a discrete inductor.
Energies 2022, 15, 5257 Figure 12 shows a comparison graph of the measured step-up efficiency between the proposed converter and those described in [20] [21][22].The ...
study proposes eight-channel interleaved DC/DC converter for interfacing super-capacitor energy storage system to a 400 V DC voltage bus. Multi-stage interleaving magnetic …
By integrating coupled inductor and switched-capacitor into power stage, the proposed converter can achieve the merits of isolation and bidirectional power ow.
This paper describes a three-phase DC-DC buck/boost converter with the coupled inductor and ZVS soft switching operation under different inductor current conduction modes. Simulation and experimental results are employed compare the performance of the proposed three-phase bidirectional converter in the PV system under …
The coupled inductor (CI) bidirectional DC–DC (BDC) converters are becoming popular in energy storage applications owing to high range factor, reduced device stress and high efficient. However, the …
[1] J. Li, C. Sulli van, and A. Schultz, "Coupled-inductor design optimization for fast-response low-v oltage dc-dc converters, " Applied P ower Electr on- ics Conference and Exposition, 2002.
Three-port converters with high voltage gain are desirable solutions for integrating renewable energy and energy storage devices into high voltage dc bus. A high gain three-port converter with soft switching is proposed in this paper, which can realize zero voltage switching for all switches and zero current switching for all diodes in various operating …
High power multi-level converters are deemed as the mainstay power conversion technology for renewable energy systems including the PV farm, energy storage system and electrical vehicle charge station. This paper is focused on the modeling and design of coupled and integrated magnetics in three-level DC/DC converter with multi-phase interleaved …
In this article, a coupled-inductor (CI)-based bidirectional dc–dc converter with a high voltage conversion ratio (VCR) and low voltage stress is proposed. The topology can achieve high VCR by employing two CIs; moreover, the interleaved technique overcomes the defect of large current ripple in CI. A sensorless current balance between …
itors C1 to C4, three-winding coupled inductor are also part of the proposed topology. The coupled inductor is composed of leakage inductance Llk1, Llk2 and Llk3, magnetizing induc-tance Lm1 and ...
Combining the fuel cell with other energy storage devices such as batteries and supercapacitors, as a hybrid system, provides less fuel consumption of PEMFC in its optimal performance [6]. Furthermore, a hybrid power system structure including fuel cells, batteries, supercapacitors, and DC-DC converters offers a high …
inductance is allowed, which can reduce total energy storage and boost transient performance [24]–[31]. Since the majority of dc fluxes are leakage fluxes that flow through high reluc-tance paths, current saturation ratings are greatly improved. This paper presents a matrix coupled magnetic structure
Bidirectional dc–dc converter (BDC) is an integral part of energy storage interface, where high efficiency, high voltage transfer ratio and small input ripple current are essential for application, such as dc microgrid and electric vehicle. In this article, a new approach is proposed to achieve reduced input ripple current at the low voltage side, which potentially …
The energy storage inductor is the core component of the inductive energy storage type pulse power supply, ... Li, Z.: Inductance calculation and energy density optimization of the tightly coupled inductors used in inductive pulsed power supplies. IEEE Trans45
Energy storage systems (ESS) with bidirectional DC-DC converters are essential in renewable energy based micro-grids, ... (2012) Nonisolated bidirectional DC–DC converters with negative-coupled inductor. IEEE Trans Power Electron 12(5):2231–2235. Article Google Scholar
Interleaved converters with coupled inductors are widely used to share load current in high power applications. It offers high equivalent switching frequency and reduced output current ripples using small size magnetic components. Owing to smaller common-mode inductance, control system can be designed to achieve fast dynamic …
In this paper, a novel high-efficiency bidirectional isolated DC–DC converter that can be applied to an energy storage system for battery charging and discharging is proposed. By integrating a coupled …
An Interleaved Bidirectional Coupled-Inductor Based DC-DC Converter with High Conversion Ratio for Energy Storage System. IEEE Transactions on Industrial Electronics . 2022 Jun 1;69(6):5648-5659. doi: 10.1109/TIE.2021.3091926
interfacing super-capacitor energy storage system to a 400V DC voltage bus. Multi-stage interleaving magnetic circuit with two-phase coupling inductor as a building block is proposed. A methodology is developed to construct the model of the multi-stage
Coupled inductors function in dc-dc converters by transferring energy from one winding to the other through the common core. They are available in many sizes, inductance values, and current ratings and most are magnetically shielded for low electromagnetic interference (EMI). The windings may have equal (1:1) or unequal turns ratios (1:N).
Mode I [t 0 –t 1]: At t 0, the power switch S has been turned on, the diode D 3 is turned on, D 1, D 2 and D 4 are turned off; the power supply V in stores energy for the primary windings of the coupled inductor through …
The converter can flexibly adjust the voltage gain of the converter by adjusting the turns ratio of the coupled inductor. At the same time, the C 2-D 2 branch in the topology is not only a part of the Cuk structure, but also a passive clamping branch of the powering switch to absorb the leakage inductance energy of the coupled inductor.
A soft-switching bidirectional dc-dc converter (BDC) with a coupled-inductor and a voltage doubler cell is proposed for high step-up/step-down voltage …
For dc microgrid energy interconnection, this article proposes a multiport bidirectional converter, leveraging three shared half-bridges. This converter achieves high voltage gain with fewer transformer turns ratios. Utilizing interleaved operation and a reverse-coupled inductor on the low-voltage side ensures a minimal ripple in the battery charging current. …
A conventional boost three-port converter is combined with a coupled-inductor-based boost-flyback converter in this work to produce a high-step-up three-port converter. The proposed converter inherits the benefits of two conventional converters, including high voltage gain, few elements, and energy recycling of the leakage inductor. In addition, …
In early stage of research on small-scale energy storage systems, coupled inductor played a major role in bidirectional DC–DC converters (BDCs) [1] to improve the overall gain. To increase the power levels and improve voltage conversion ratios in distributed energy storage systems, an interleaving ...
Lee, "Novel coupled-inductor multi- ... without energy storage presents the advantage of achieving very high efficiency over a wide load range as well as a fast dynamic response. However, ideal ...
Energy storage is the major concern in smart micro grids like in renewable power generation, electric vehicles and small scale DC-UPS systems. This paper proposes analysis, and voltage mode control of coupled inductor bidirectional converter. Unfortunately, switches of four and beyond in isolated schemes increase production costs …
A coupled inductor has more than one winding wound on the magnetic core. It is typically used for energy storage [1,2] in many power electronic networks such as electric energy storage systems, electric vehicles, or photovoltaic systems [3,4]. The abovemen‐tioned systems require the use of various types of converters.