Abstract Solar power is a renewable energy source, and its efficient development utilization are important for achieving global carbon neutrality. However, partial shading conditions cause the output of PV systems to exhibit nonlinear multipeak characteristics, resulting in loss power. In this paper, we propose novel Maximum Power Point Tracking (MPPT) technique based on Dung Beetle Optimization Algorithm (DBO) maximize under various weather conditions. We performed performance comparison...

With the proposal of carbon peak and neutrality policy, electric vehicle as a clean new energy transportation tool has attracted more attention. Battery swapping station (BSS) is an alternative method to charge vehicles (EVs). This paper summarizes development present situation battery analyzes distribution probability model EVs' arrival based on historical data electrical station, which approximately obeys Poisson distribution. The convergence accuracy traditional particle swarm...

Hydrogen (H2) energy is an ideal non-polluting renewable and can achieve long-term storage, which effectively regulate the intermittence seasonal fluctuation of solar energy. Solid oxide fuel cells (SOFC) generate electricity from H2 with only outputs water, waste heat, almost no pollution. To solve power generation instability discontinuity photovoltaic (PV) systems, a hybrid PV-SOFC system has become one feasible solution. The “digital twin”, integrates physical systems information...

Compared to the plug-in charging system, Wireless power transfer (WPT) is simpler, reliable, and user-friendly. Resonant inductive coupling based WPT technology that promises replace system. It desired system should provide regulated current with high efficiency. Due instability in connected load, output current, power, efficiency vary. To solve this issue, a buck converter implemented on secondary side of which adjusts its internal resistance by altering duty cycle. control cycle converter,...

In magnetic coupling wireless power transfer system, the relative position of coils may change during operating condition. order to solve mutual inductance variation caused by movement coils, increase anti-offset capability system achieve constant output, a variable structure is proposed in this article. Build mathematic models LCC-S and LCL-S structures analyze expressions output efficiency two structures. Design switching condition, relationship between coefficient at point parameter...

Magnetic coupling resonance wireless power transfer (MCR-WPT) technology plays an important role in promoting the development of electric vehicles. In order to meet demand dual-load synchronous supply for vehicles, a novel system based on fundamental wave channel and harmonic is designed. The circuit model established solved by Kirchhoff's law superposition theorem. By numerical methods, relationship between performance cross-coupling studied, variable σi introduced measure severity mutual...

In order to eliminate the potential safety hazard that arises when metal foreign objects intervene in wireless charging area of electric vehicles, this paper proposes a object detection method be applied system vehicles based on optimal design array coil. Firstly, equivalent circuit model is established, then principle analyzed, and scale factor β introduced as optimization index Secondly, change with parameters analyzed appropriate are compared selected. Thirdly, basis planar square spiral...

The article firstly analyzes the filtering characteristics of double-LCC circuit in wireless power transfer (WPT) system. By defining voltage interference ratio (VIR), harmonic introduced by inverter output square waveform is represented. ability suppressing source with different frequency each branch compensation network obtained analyzing VIR. In order to further reduce content and decrease introduction from input-side, adopts an LC-double-LCC topology circuit. That is, LC resonant part...

Among many types of Wireless Power Transfer (WPT) technology, Magnetically Coupled Resonance (MCRWPT) technology has been studied more and due to its stable transmission strong anti-interference ability. In this paper, the operating characteristics Dual-LCC MCRWPT system based on secondary side controlled rectifier are analyzed, variation current with D, phase relationship between input voltage resonant network, output load in depth. Through simulation analysis inverter MOSFET switching...

The rapid growth of household photovoltaics poses a significant challenge to the safe operation distribution networks. To enable unified monitoring photovoltaic inverters by power grid companies, this paper introduces an information interaction device for based on high-speed line carrier communication and radio frequency communication. study begins analyzing access architecture inverter, followed presentation hardware software design device. Subsequent experiments conducted at various...

The working principle and characteristics of double-sided LCC resonant network in magnetically coupled wireless power transfer (WPT) are analyzed. circuit parameters optimized by combining the output current original side inverter circuit, zero voltage switching (ZVS) is realized. This paper presents a controlled rectification control mode introduces flow. realizes ZVS while adjusting power. rationality effectiveness proposed parameter optimization method verified simulation.

Wireless charging is of great significance for accelerating the promotion electric vehicles. In order to explore influence foreign object on wireless system, circuit model and magnetic are established simulate working status LCC-LCC system under interference object. The used analyze conductivity while properties objects system. results prove that will increase power loss, change equivalent parameters coil destroy field in energy coupling area. work this paper has guiding design detection based coils.

In order to improve the flow state of liquid in electromagnetic stirrer for aluminum alloy and reduce volume device, structural parameters were optimized by using finite element model combined with optimization method NSGA-II multi-objective genetic algorithm. The relationship between rate after magnitude frequency loading current was simulated analyzed. results show that: compared original structure, structure has smaller yoke volume, can produce more suitable field distribution. Further...

Photovoltaic (PV) is a clean and renewable energy source considered an effective way to solve problems reduce emissions. However, photovoltaic output significantly impacted by different weather conditions. To improve the reliability stability of resource, in this paper, we propose prediction approach accurately deduct future capability. First, construct weighted undirected spatio-temporal graph characterize relationship between distributed sites. Then, utilize LSTM network study time-series...

In order to solve the problem of low transmission efficiency and high cost wireless power supply system with flat pickup, this paper simulates analyses setting methods ferrites. An improved pickup is proposed increase output by 10% 20% little added cost. The effect height on coupling coefficient simulated analyzed. Finally, correctness theoretical analysis verified experiments.