Research on Steady-state Error of Electric Spring With Switchable Smart load under Fixed Angle Control

Aiming at the problem of excessive steady-state error of electric spring with switchable smart load(SES), this paper introduces the concept and basic principle of SES and the definition of fixed angle, discusses the selection method of fixed angle, and discusses the switchable control strategy under fixed angle control. According to automatic control principle, the control process of SES stable different loads under fixed-angle control is analyzed and the principle of reducing steady-state error is given. Finally, with the help of MATLAB/Simulink software, it is verified that electric spring with switchable smart load under fixed-angle control can stabilize the voltage of key and non-critical loads at the same time, and is conducive to reducing the steady-state error.