Lithium-ion batteries play an important role in large-scale energy storage systems. However, the power inconsistency of battery packs restricts developments modern technologies area. The motivation present study is to serve growing needs balance for lithium-ion packs. proposes a flexible multiphase interleaved converter equalization lithium pack with series configuration. Moreover, graph theory applied analysis circuits. It intended establish unified standard comparison. parameter average...

The application of the fourth industrial revolution has become an opportunity and objective condition for realizing energy Internet, in which storage technology is cornerstone. However, research on often stays aspects power grid cutting valley filling, improving quality, etc., working mechanism control methods Internet future development still scarce. Starting from current situation battery this paper first introduces differences nature between batteries characteristics stations at home...

With the rapid development of energy internet and new energy‐related industries, lithium‐ion batteries are widely used in various fields due to their superior storage characteristics. To reduce influence inconsistency individual cells battery pack, a switch array DC equalization circuit together with an acceleration information Gauss‐Seidel (DAIGS) method is proposed. The aging factor added system state matrix considering time effect. In this method, transfer path can be optimized by...

The role of fractional calculus in circuit systems has received increased attention recent years. In order to evaluate the effectiveness time-domain calculation methods analysis fractional-order piecewise smooth systems, an experimental prototype is developed, and effects three typical different test scenarios are compared studied this paper. It proved that Oustaloup’s rational approximation method usually overestimates peak-to-peak current brings pulse–voltage phenomenon scenarios, while...

In this paper, a family of novel single-phase three-level PFC based on switch-capacitor cell is proposed. The proposed topologies have the characteristics high power factor, low voltage stresses, and losses. Firstly, derivation process introduced in detail. Based representative circuit topologies, its operation principle analyzed from aspects working current paths, key waveforms, pulse distribution. Meanwhile, equivalent model deduced. Secondly, performance analyzed. Then modulation...

Battery packs are widely used in electric vehicles, and their state-of-charge is one of the essential issues that affect performances, whilst balance between parallel series cell battery pack always has an obvious effect. To enhance working performance lithium-based power pack, a hybrid natural forced active balancing control (HNFABC) strategy proposed adopted to circuit this work. These converters, which advantageous equalization, accelerate speed equilibrium final stage protect from being...

In squirrel-cage induction generator (SCIG) powered micro-grid, continuously variable reactive power (CVRP) should be provided to stabilize the grid voltage when load is constantly changing. This paper proposes a novel CVRP compensator, which name static VAR compensation magnetic energy recovery switch (SVC-MERS). Comparing with compensator (STATCOM), proposed device has some advantages in line frequency switching, small dc-capacitor and robustness. To begin with, operation principle of...

The energy market is becoming more and complex, various harmonics distributed have impacted the large power grid. Various factors led to need for scientific rational allocation of energy, so as achieve continuous reliable operation system. Realizing control storage systems make them efficient has gradually become a huge challenge modern systems. Large-scale advanced battery technology faces limitations caused by cell inconsistency, highly integrated intelligent equalization circuit solution...

In the near future, electric vehicle is entirely possible to replace traditional cars due its zero pollution, small power consumption and low noise. Lithium-ion battery, which owns lots of advantages such as lighter larger capacity longer life, has been widely equipped in different all over world. One disadvantage this energy storage device state charge (SOC) difference among these cells each series branch. If equalization circuit not allocated for series-connected batteries, safety lifetime...

With ever-increasing concerns on environmental pollution and energy shortage, the development of renewable resource has attracted a lot attention. This paper first reviews both wind photovoltaic (PV) generation techniques approaches micro-grid voltage control. Then, novel islanded micro-grid, which consists & PV hybrid-energy storage device, is built for application to remote isolated areas. For power branch, double- maximum point tracking (MPPT) technique developed trace sunlight regulate...

The application of modern energy storage is the cornerstone development Internet technology, and components play an important role. However, use lithium batteries as also facing challenges, among which impact caused by battery inconsistency particularly critical. A forced equalization circuit proposed in this paper, can transfer from any to other pack, thereby reducing each unit prolonging life pack. Nash based on complete information game strategy used optimize control circuit. In theory,...

To reduce the inconsistency of battery packs, to enhance overall performance and prolong electric vehicle mileage an innovative balancing converter for lithium pack is proposed in this paper. During driving process vehicle, topology makes it convenient transfer extra energy from one cell any other cells, namely, active management composed improved bidirectional DC-DC converters which are presented with Hybrid Natural Forced Active Balancing Control (HNFABC). According HNFABC, simulation...

The role of fractional calculus in circuit systems has received increased attention recent years. In order to evaluate the effectiveness time-domain calculation methods analysis fractional-order piecewise smooth systems, an experimental prototype is developed and effects three typical different test scenarios are compared studied this paper. It proved that Oustaloup’s rational approximation method usually overestimates peak-to-peak current brings pulse-voltage phenomenon scenarios, while...

The Magnetic Energy Recovery Switch is a kind of novel reactive power compensation device which supplies continuous power. In this paper, the conventional control method introduced, and then coordination algorithm based on phase delay minimum capacitor voltage analyzed emphatically. working curve obtained under premise reaching required in grid. And for all operating points have been assessed to find optimal point Switch. Finally, simulation conducted verify effectiveness rapid dynamic...

Due to the monomers difference caused during production process, inconsistencies of Lithium batteries in remaining capacity can affect service life battery packs and cause damage or even explosions. A new mod-ulnar equalization circuit, composed improved DC-DC converters with adaptive control strategy based on ant coloy system (ACS), is proposed enhance performance packs. The circuit has advantages simplicity easy implementation. It achieved controllability bidirectional energy current size....

Aiming at the problem that voltage of grid-connected node asynchronous wind turbine fluctuates with load change, a three-phase magnetic energy regeneration switch (MERS) topology and optimization adjustment method are proposed. The paper analyzes system structure working principle MERS reactive power regulation; Secondly, in order to enhance tracking effect MERS, reduce disturbance amount improve adaptability turbines, fuzzy parameter control strategy is adopted achieve accurate dynamic...

Lithium-ion batteries play an important role in large-scale energy storage systems. However, the power inconsistency of battery packs restricts developments modern technologies area. The motivation present study is to serve growing needs balance for lithium-ion packs. proposes a flexible multiphase interleaved converter equalization lithium pack with series configuration. Moreover, graph theory applied analysis circuits. It intended establish unified standard comparison. parameter average...