Ziping Feng

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The battery energy storage system (BESS) insisting of Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub> (LTO)-based batteries is put forward in this paper in order to suppress the voltage fluctuation of the DC grid of elevator caused by regeneration energy of the traction machine. Based on the mathematical model of the regenerative power set up in MatLab/Simulink,(More)
The energy consumption of air-conditioning occupies a considerable proportion of the total energy consumptions in the modern society. And it is increasing year by year. For example, the proportion of energy consumption for air-conditioning in private and public areas has been increasing to 40% or more of the total electricity power supplies in the summer(More)
The hybrid energy storage system (HESS) composed of super capacitors and batteries is proposed in this paper for the power supply system of rail transmit to prevent the overtension of grid voltage caused by the braking energy. According to the power fluctuations and allocation principle, the capacity and control method of HESS are designed to achieve the(More)
A CFD simulation on the flow filed inside the ice slurry concentrating hydrocyclone (ISCH) was performed. The single-phase flow field inside the ISCH was simulated using the Renormalization k-&#x03B5; Model (RNG k-&#x03B5;), Reynolds Stress Model (RSM) and Large eddy Simulation (LES) Model, separately. The simulation results showed that LES achieved the(More)
In order to realize voltage stabilization and energy saving of rail transit traction supply system, a Li-ion battery energy storage system (BESS) is presented for application in the DC traction grid to reuse the braking energy of the vehicles. According to the models of traction substation, power lines and vehicles, the braking energy saved by BESS is(More)
The performance of multi-split air conditioning system is very complex because of the interaction among different evaporators. An optimal control method and a two-stage fuzzy proportional integral derivative (FPID) controller for room temperature control are proposed. The salient feature of the two-stage FPID controller is that it has a simple structure and(More)
The real-time monitoring of status parameters, such as cell voltage and state of charge (SOC), is an important guarantee of the safety operation of the battery energy storage system (BESS). And the two-level architecture of hardware system which includes several battery management units (BMU) and the central management unit (CMU) is designed with the(More)
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