scholarly journals Two-Stage Coordinated Control Strategy of AC/DC Hybrid Power System Based on Steady-State Security Region

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 139221-139243
Author(s):  
Zhengguang Zhu ◽  
Jun Yan ◽  
Chen Lu ◽  
Zhong Chen ◽  
Jiang Tian
Keyword(s):  
Steady State ◽  
Power System ◽  
Control Strategy ◽  
Coordinated Control ◽  
Two Stage ◽  
Hybrid Power System ◽  
State Security ◽  
Hybrid Power ◽  
Security Region

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.

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.

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