Multi-mode Design and Constant Current Control of Hydraulically Interconnected Energy-Regenerative Suspension

2019 ◽  
pp. 364-372
Author(s):  
Ruochen Wang ◽  
Dong Sun ◽  
Renkai Ding ◽  
Xiangpeng Meng
Keyword(s):  
Current Control ◽  
Constant Current ◽  
Mode Design ◽  
Multi Mode

scholarly journals Robust Tracking Control of a Three-Phase Charger under Unbalanced Grid Conditions

Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3389 ◽  
Author(s):  
Chivon Choeung ◽  
Meng Leang Kry ◽  
Young Il Lee
Keyword(s):  
Control Method ◽  
Current Control ◽  
Control Technique ◽  
Constant Current ◽  
Linear Matrix ◽  
Robust Tracking Control ◽  
Integral Control ◽  
Three Phase ◽  
Proportional Integral Control ◽  
Unbalanced Grid

This paper presents a robust control technique for three-phase chargers under unbalanced grid conditions. The control method consists of inner-loop robust grid-current control and outer-loop proportional integral control for constant current (CC) and constant voltage (CV) control. A dual-current control for the inner-loop positive and negative sequence is employed to eliminate the unbalanced current caused by the grid so that a constant current and voltage can be provided to the batteries. The inner-loop robust controllers utilize state feedback with integral action in the dq-synchronous frame. A linear matrix inequality-based optimization scheme is used to determine stabilizing gains of the controllers to maximize the convergence rate to steady state in the presence of uncertainties. The uncertainties of the system are described as the potential variation range of the inductance and resistance in the L-filter.

Research on the System of Supercapacitor Parameters Measurement Based on High and Constant Current Control

2012 ◽  
Vol 241-244 ◽  
pp. 423-428
Author(s):  
Xing Hua Li ◽  
Yuan Peng Li ◽  
Mao Hu Zou
Keyword(s):  
High Precision ◽  
Test System ◽  
Current Control ◽  
Constant Current ◽  
Capacitance Measurement ◽  
High Precision Measurement ◽  
Super Capacitor ◽  
Compensation Methods ◽  
Constant Current Charging ◽  
Parameters Measurement

High and constant current charging and discharging is necessary to improve the precision of supercapacitor parameters measurment. In this paper, three topics are discussed for high-precision measurment of supercapacitor parameters. Firstly, the analysis of the principle of capacitance measurement was described. Secondly, a model of high and constant current control was presented. The model used in the system of supercapacitor parameters measurement was in order to ensure the constant-current accuracy. Finally, several software compensation methods were used to improve accuracy. And then, the experiment results between our system and the American Arbin Instrument Company’s Super Capacitor Test System were compared. The system designed by us shows good performance of high precision measurement.

Sign in / Sign up

Export Citation Format

Share Document