An energy management control strategy is proposed for an islanded AC microgrid with the hybrid storage system, including battery and supercapacitor (SC). According to state of charge battery, photovoltaic system can work in either maximum power point tracking mode or load prevent from over charging. Similarly, shedding adopted discharging. A virtual impedance achieve effective sharing systems, where provides steady SC only supports transient fluctuations. The terminal voltage be restored...

This paper proposes a novel virtual inertia control (VIC) method based on feedforward decoupling strategy to address the low issue of power-converter-interfaced microgrids. The scheme is employed eliminate coupling between active and reactive power caused by line impedance. power-voltage droop can be applied battery converter in hybrid energy storage system (HESS). A VIC developed for supercapacitor (SC) HESS increase microgrid. Detailed small-signal modeling SC with proposed was conducted,...

The typical stand-alone microgrid (MG) composed of wind turbine (WT), photovoltaic (PV), diesel generator (DE), and battery energy storage (BES) is taken as the research object. Firstly, a multi-objective optimal capacity configuration model considering economic efficiency, reliability, environmental protection established. Secondly, in view complex characteristics optimization model, such strong nonlinearity multi-constrained conditions, combining enumeration that can find complete real...

This paper presents a fuzzy logic control algorithm for the obstacle avoidance of mobile robot in unknown environment. A reasonable and applicable response table is constructed by using inference. Meanwhile, dealing with deadlock problem, offers an adaptive rotation angle based on detection distance. Simulation results different kinds environments prove effectiveness feasibility algorithm.

Abstract In DC microgrids, power electronic converters are widely used to connect loads and renewable energy sources generate different voltages. These operate as constant (CPL) within a closed control loop. When voltage fluctuates, these display negative impedance characteristics, potentially leading system instability. Therefore, the analysis of impact CPL on microgrids during large disturbances is crucial. This paper employs mixed potential theory study disturbance stability under CPL....

Batch distillation processes are widely used in the chemical industry. In this work, optimal operation strategies for such studied by using a fast adaptive simulated annealing (FASA) algorithm. Simulated algorithm is stochastic nature, and it converges towards global optimum. However, its computational load usually much too heavy. study, FASA was presented with moves searched neighborhood range to decrease computation load. According characteristics of batch process, FASA-based parallelized...

To realise the distributed control of hybrid energy storage system (HESS) in an islanded AC microgrid, a dynamic HESS power allocation strategy based on virtual impedance (VI) for supercapacitor (SC) and battery is proposed. Dynamic power-sharing two kinds devices can be achieved without real-time measuring load power. The state charge (SOC) recovery SC with SOC loop integrated into VI loop. principle derived establishment equivalent circuit model. By analysing influence voltage current...

This paper investigates the indirect model predictive control of matrix converter (MC)-driven permanent magnet synchronous motor (PMSM) for a flywheel energy storage system (FESS). There are 27 switch states in MC, which result extensive computations MC. To address this issue, proposes an that divides MC into virtual rectification and inversion. In way, computational burden is significantly reduced. The proposed used to stator currents PMSM. current references generated according outer power...

The objective of this paper is to analyze the dynamic performance an offshore gas-turbine power system operating in normal and abnormal situations. primarily consisted two generation systems other electrical components. mathematical models for components, developed cater behavior using Simulink SimPowerSystems, included model, electric machine electromechanical three-phase transformer model. method predicting responses interconnected systems, named voltage-current combination method, was...

Energy storage (ES) system in DC microgrid has the functions of stabilizing bus voltage and improving power quality, it is an important part microgrid. The battery-supercapacitor hybrid energy (HESS) more advantages than traditional ES system. In order to make full use HESS realize reasonable distribution power, a control strategy for studied this paper. virtual resistor or capacitor extended into loop each element change output impedance converter then realized. Battery mainly responsible...