An Improved Three-Level Cascaded Control for LCL-Filtered Grid-Connected Inverter in Complex Grid Impedance Condition

Abstract

Full penetration" far-reaching offshore Ocean energy and power".

Reconfigured passivity‐based control strategy of LCL‐type grid‐connected inverter under complex grid conditions

“…An impedance model of the grid-connected LCL-type inverter and closed-loop control system is constructed based on (31). The inverter equivalent output admittance can be used to examine the stability of the system as well as the range of active damping parameters r a , r b , and r c injected in the inner, middle, and outer loops.…”

“…In Lai et al 30 , the output amplitude was limited for all differential terms of EL‐PBC with good results. By eliminating the differential terms in the middle and inner loops, Huang et al 31 proposed a new three‐level series control structure built on the traditional EL‐PBC. In this paper, on the other hand, the differential term is preserved and optimized by improving the noise term to avoid affecting the stability of the system.…”

A Constructive Method of Solving Local Boundary Value Problems for Nonlinear Systems with Perturbations and Control Delays

“…Consequently, more complicated BVPs with time delays in the right-hand side of an ODE system describing the behavior of the control object have attracted the attention of researchers. Many engineering solutions have been proposed taking various delays into account (e.g., [1][2][3][4][5][6][7] and many others). Since the late 1960s, many researchers have studied BVPs for linear stationary, nonstationary linear, bilinear, semilinear, and nonlinear systems of ordinary differential equations with delayed control and/or system state.…”