DC Side Bus Voltage Control of Wind Power Grid-Connected Inverter Based on Second-Order Linear Active Disturbance Rejection Control

Abstract

In order to improve the dynamic response speed and the steady-state performance of the DC side bus voltage of the wind power grid-connected inverter, a mathematical model of a typical three-phase voltage type PWM (Pulse Width Modulation, PWM) grid-connected inverter was established, and its traditional voltage-current double closed loop with proportional-integral control method was analyzed. Then a second-order linear active disturbance rejection controller that does not depend on system model information was designed to replace the traditional voltage outer loop proportional-integral controller, thus a new double closed-loop control structure was formed to control it. The frequency domain theory was used to analyze the convergence of the third-order linear extended state observer and the influence of the total disturbance on the performance of the third-order linear extended state observer. The parameter tuning scheme of the designed controller was given. Finally, the 1.5 MW direct-driven permanent magnet wind power generation system was built in the Matlab/Simulink software and the control effects of the two control modes under different working conditions are compared. The simulation results show that the control scheme designed in this paper is superior to the traditional proportional-integral controller which has good anti-interference characteristics and robustness. Especially it has a good stability effect on DC side bus voltage fluctuations.

Energy Management In Converter-Interfaced Renewable Energy Sources Through Ultracapacitors For Provision Of Ancillary Services

“…Again, a lower value of k p p leads to a closer response to the ideal. The previous behavior of p s and p UC occurs because the ∆p ⋆ UC term for computing p ⋆ s in (11) directly depends on the value of k p p and the quadratic error of the UC voltage. A high value of k p p increases the value of this term, which reduces the AS provision reflected in both a lower power delivered by the UC p UC and injected power to the POI p s .…”

“…In this manner, the control capacity of the system is also increased compared to the traditional control of a CI-DRES VSC. This traditional operation is based on the control of the injected current of the ESS through the DC/DC converter on the one hand, and, on the other hand, on the control of the DC bus voltage through the VSC [11], enabling, the power delivery of both the PV plant and the ESS at the VSC Point of Interconnection (POI). However, the traditional operation of the CIDRES-VSC/ESS limits the VSC capability to emulate a SG and provide the ASs, due to the fact that in the latter case, it is essential to control the power injected at the POI, p s , [12] and not the DC bus voltage.…”

Voltage fluctuation suppression strategy of DC bus based on improved linear active disturbance rejection control

“…In this context, the Active Disturbance Rejection Control(ADRC) technology has been widely concerned in the field of microgrid interface converter control due to its strong robustness and anti-interference ability. Based on the linear active disturbance rejection theory, the observation bandwidth of traditional linear Extended State Observer(TLESO) is increased by introducing the differential term of observation error in literature [6], but at the same time, the parameters are also doubled, which makes the control complicated. Literature [7] uses first-order ADRC to introduce correction links to improve the immunity of TLADRC.…”

A State-Space Approach to the Modelling and Control of the Neutral Leg of a Four Legs, Three-Phase Inverter

“…photovoltaics [2,3] and storage systems) with the AC grid. Moreover, inverters could also be used to interface AC sources (e.g., wind-turbines [4,5] or hydro-turbines) to the AC grid. AC source voltage and frequency may differ from the grid values, and they can vary according to the working point.…”