scholarly journals Development of energy control system for parallel hybrid power system using dynamic equations and fuzzy theory

2020 ◽  
Vol 12 (11) ◽  
pp. 168781402096692
Author(s):  
Po-Tuan Chen ◽  
Cheng-Jung Yang ◽  
K David Huang
Keyword(s):  
Power System ◽  
Control Strategy ◽  
Combustion Engine ◽  
Fuzzy Theory ◽  
Optimal Operation ◽  
Power Sources ◽  
Hybrid Power System ◽  
Hybrid Power ◽  
Parallel Hybrid ◽  
Fuzzy Control Strategy

A fuzzy control strategy is developed in this study to manage the parallel hybrid power system of internal combustion engine (ICE) and electric motor (EM) for hybrid vehicles. The rules established for the fuzzy logic are based on the conditions of vehicle pedal position, vehicle velocity, and the state of charge to control the throttle position of the ICE and the switch position of EM in low-, mid-, and high-power cruising. The optimization of the control strategy can make vehicles achieving ECE 40 driving pattern. In addition, the ICE can work in an optimal operation range, thus reducing carbon emission. The EM may provide power according to the demand, such that the torque output of the output shaft of the power split device is twice of the input of the two power sources separately.

scholarly journals Online Hierarchical Controller for Hybrid Power System

2012 ◽  
Vol 2012 ◽  
pp. 1-13
Author(s):  
Salem Zerkaoui
Keyword(s):  
Power System ◽  
Sliding Mode ◽  
Control Unit ◽  
Optimal Operation ◽  
Energy Management Strategy ◽  
Power Sources ◽  
Hybrid Power System ◽  
Hybrid Power ◽  
Robust Control System ◽  
High Level

This paper presents the basis for the development of an intelligent and autonomous energy management strategy for hybrid power system (HPS). Two hierarchical levels are proposed to control and manage the HPS. The low level is performed by a local control unit (DC-DC converters controller) of the different power sources. Dynamic equations describing the coupling of converters are derived, and a robust sliding mode dynamic controller is designed. The high level is performed by the online supervisor unit. This unit is designed by applying on-line Takagi-Sugeno fuzzy logic principles. As a result the robust control system gets rid of the limits of the HPS, which has the imprecision, uncertainty, strong coupling, and nonlinearity, to achieve its tractability, robustness, and low solution cost. Under the operation constraints related to each type of sources, the simulation results show that the optimal operation objective of HPS has been achieved.

Ground Tests of Hybrid Electric Power System for UAVs

2013 ◽  
Vol 448-453 ◽  
pp. 2326-2334 ◽  
Author(s):  
Yan Ping Li ◽  
Li Liu ◽  
Xiao Hui Zhang ◽  
Shang Tao Shi ◽  
Chang Wei Guo
Keyword(s):  
Power System ◽  
Lithium Batteries ◽  
Test System ◽  
Electric Power System ◽  
Hydrogen Energy ◽  
Power Sources ◽  
Hybrid Power System ◽  
Hybrid Power ◽  
Power Management Unit ◽  
The Mathematical Model

As the aviation has realized the seriousness of pollution and emission issues, people have taken efforts to use renewable energy on planes or UAVs. This paper focused on the applications of solar and hydrogen energy to UAVs. A hybrid power system, consisting of solar cells, fuel cells and lithium batteries, was discussed. To achieve the hybridization of power sources, a prototype of a power management unit (PMU) was fabricated. After the installation of a test system for synthesizing power sources, PMU and load, a series of ground tests were executed to verify the mathematical model of lithium battery and the reliability of the hardware. Ground data confirmed the feasibility of hybrid power system.

scholarly journals Study on emergency power control strategy for AC/DC hybrid power system containing VSC-HVDC

2018 ◽  
Author(s):  
Lin Liu ◽  
Zhenda Hu ◽  
Rong Ye ◽  
Zhangsui Lin ◽  
Xiaodong Yang ◽  
...  
Keyword(s):  
Power System ◽  
Power Control ◽  
Control Strategy ◽  
Hybrid Power System ◽  
Hybrid Power ◽  
Emergency Power

scholarly journals A Disturbance Rejection Control Strategy of a Single Converter Hybrid Electrical System Integrating Battery Degradation

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2781
Author(s):  
Yue Zhou ◽  
Hussein Obeid ◽  
Salah Laghrouche ◽  
Mickael Hilairet ◽  
Abdesslem Djerdir
Keyword(s):  
Power System ◽  
Hybrid System ◽  
Control Strategy ◽  
Disturbance Rejection ◽  
Pass Filter ◽  
Hybrid Power System ◽  
Hybrid Power ◽  
Disturbance Rejection Control ◽  
Cubature Kalman Filter ◽  
Dc Bus

In order to improve the durability and economy of a hybrid power system composed of a battery and supercapacitors, a control strategy that can reduce fluctuations of the battery current is regarded as a significant tool to deal with this issue. This paper puts forwards a disturbance rejection control strategy for a hybrid power system taking into account the degradation of the battery. First, the degradation estimation of the battery is done by the model-driven method based on the degradation model and Cubature Kalman Filter (CKF). Considering the transient and sinusoidal disturbance from the load in such a hybrid system, it is indispensable to smooth the behavior of the battery current in order to ensure the lifespan of the battery. Moreover, the constraints for the hybrid system should be considered for safety purposes. In order to deal with these demands, a cascaded voltage control loop based on a super twisting controller and proportional integral controller with an anti-windup scheme is designed for regulating the DC bus voltage in an inner voltage loop and supercapacitors’ voltage in an outer voltage loop, respectively. The specific feature of the proposed control method is that it operates like a low-pass filter so as to reduce the oscillations on the DC bus.

The Design of an Independent Power Supply Applied to the Isolated Island

2012 ◽  
Vol 614-615 ◽  
pp. 1759-1765
Author(s):  
Yi Cheng Chen ◽  
Zhi Xin Wang
Keyword(s):  
Environmental Factors ◽  
Power System ◽  
Power Supply ◽  
Power Sources ◽  
Hybrid Power System ◽  
Hybrid Power ◽  
Renewable Power ◽  
Independent Power Supply ◽  
Electricity Load ◽  
Power Wave

This article aims to make a design of the power supply for an isolated island that has difficulty in realizing the connection with the mainland power grid. An independent hybrid power system consisting of varieties of renewable power sources including solar power, wind power, wave energy and batteries are introduced. This system is dedicated to make the forecast of the electricity load of the island according to the environmental factors and the electricity demand of the island. Then it builds the basic framework and models of hybrid power system on the basis of the forecast and finds out the appropriate method to optimize the power supply.

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