Hybrid power sources composed of fuel cells and secondary batteries can combine the high energy density with batteries. A dc/dc converter be placed between cell battery to balance flow greatly augment peak output power. This work presents a novel, flexible strategy for multiobjective control in hybrid source. The is able regulate current charging or voltage while limiting discharging battery. It used two different configurations without any change. implemented MATLAB/Simulink tested by...

This paper presents a neural network-based feedback control method for enhancing the precision and tracking speed of permanent magnet brushless motor under command control. The proposed involves real-time adjustment PID controller parameters using electromechanical output signals, enabling adaptive based on output. Experimental results demonstrate that this approach enhances performance dynamic load response capability, resulting in current waveform with excellent low distortion. Overall,...

Fuel cells provide clean, safe and quiet power to the users; however, one main week point of fuel cell is its very slow dynamics. To overcome this limitation, paper presents a hybrid supply system that consists three individual sources with different power-density characteristics - cell, battery, supercapacitor which are connected same voltage bus through appropriate dc-dc converters controls. The proposed features high peak-power capacity provides fast response load change, energy...

It is well understood that Vector control (VC) scheme very co mplicated and has slower torque response. Direct (DTC) easier faster response, but it'll bring the bigger ripples than those under VC. In this paper, a new fuzzy logic VC-DTC based on common of vector direct been presented. The system uses current VC together with DTC type switching table. Theoretical background these schemes outlined, then simulation test bench established for performance evaluation variety conditions. comparison...

As a major polymer processing technique, extrusion is continuous process, during which material properties, machine variables, and process variables interact with each other to determine the final product quality. Precise control of key such as barrel temperatures melt pressure are crucial ensure good quality in process. In this paper, overall extruder system constructed by two independent loops, single-input–single-output (SISO) at die output, multiinput–multioutput (MIMO) temperatures. The...

Digital control technologies are becoming increasingly attractive to power electronics controls in managing many conversion systems due advantages over analog controls. Final construction of aerospace is extremely costly while traditional software-only simulation often insufficient exactly capture the dynamics. One way bridge gap between and final system real-time hardware-in-the-loop (RT-HIL) testing, which increases realism provides access hardware features currently not available...

For conventional motor soft starter, the starting torque would be seriously decreased when reduce voltage, so it is limited to light load, However, many overloading start-up required in practical applications. According relationship between three-phase asynchronous electromagnetic and power frequency, keeping size of voltage unchanged, can increased by reducing frequency. Keeping main circuit original system rotation controlled changing thyristor trigger angle, converting frequency which add...

As DC/DC converter is of strong non-linear, a fuzzy self-adaptive adjusting PED controller presented. This control mode which employs rules to modify the parameters online. The object study in this paper phase-shifted full-bridge converter. performance has been proved be perfect by using MATLAB simulation.

Hybrid power sources composed of fuel cells and secondary batteries would combine the high energy density with batteries. A DC-DC converter could be placed between cell battery to balance flow, which augment peak output greatly. This paper presents a novel multiobjective control strategy for in hybrid source. The is able regulate current charging or voltage while limiting discharging battery. It can used two different configurations without any change. implemented MATLAB/Simulink tested by...

Aiming at the problem that accumulated temperature effect will cause abnormal increase of power load and accuracy traditional forecasting methods is poor, a day-before method considering accumulation proposed based on analysis influence load. In this paper, cumulative prediction analyzed first, then feature extraction first-order forward difference proposed. XGBoost model used to forecast ahead day, error before after introduction features compared. The results show higher features....

Abstract With the deepening of China’s energy reform, large-scale renewable access has put forward higher requirements for flexible adjustment ability power system. The research and application mining adjustable resources on user side to participate in peak regulation frequency grid have received extensive attention. gradual opening market reform system, feeder load aggregator gradually become a new role market, plays an important centralized management users, optimization distribution,...

The actuator controller is the key component of active vibration control system. With rapid development microelectronics and power electronics in recent years, type technology based on high-frequency pulse width modulation (PWM) signal has become a research hotspot. At present, generally adopts classic PID as strategy, but this strategy more suitable for controlling fixed loads poor real-time performance dynamic load control.In response to issue, article improves design algorithm proposes an...

As the traditional ways of MPPT suffers from some dissatisfaction, this paper presents a kind Fuzzy Support Vector Machines (FSVM) for prediction and simulation voltage maximum power output in PV module. The measured data meteorological light intensity was used to simulate analyze shows that Compared with BP Neural Network, model FSVM achieved minimization principle structural risk, have better ability generalization future Samples, higher accuracy stability.

At motor start-up process, the speed is constantly changing, input voltage adjustments should follow changes of timely, or it difficult to achieve desired objectives, but traditional way increased cost maintaining, complexity, and made reliability lower, which would certainly affects usage scope controller. This paper presents a new method detection according conventional soft starter, in heavy starter system, discrete variable frequency features, based on residual after current dump been...

In this paper, Six DC Motor-Driven was designed for the Smart Car Competition of University Students, after a comparative analysis experiment, receiving advantages and disadvantages six methods. Finally, driven approach with strong drive capability, small size, stable performance is established, it can be widely used in occasions high-power less than 40V.

Predictive control algorithm based on the step or impulse response of object, using a rolling over method realizing process on-line optimization control. In process, it gets feedback correction continuously through comparison between measured system output and prediction model output, is able to overcome certain extent impact as result error structure disturbance some state uncertainty noise disturbance. There are lots methods predictive control, can deal directly with pure lagged object has...