T40.4 - Online Impedance-Based Analysis for Power System Stability Assessment using Transformer-Less and Filter-Less Switch-Mode Perturbation Generator

Thursday, March 20, 2025

11:10 AM – 11:30 AM ET

Location: Level Three, A316

Technical Lecture Presenter(s)

Tomoya Ide

Toyo University,Graduate School of Science and Engineering

Presentation Paper

Co-Author(s)

Yuko Hirase, PhD (she/her/hers)

Toyo University
Takanori Isobe (he/him/his)

University of Tsukuba
Huang Cheng (he/him/his)

University of Tukuba

This paper proposes an on-line impedance-based analysis of the power system, and a switch-mode perturbation generator to be applied. The proposed approach utilizes frequency scanning with rectangular perturbations, which is achieved by one pulse switching of the perturbation generating inverter. It can eliminate filter inductors, which often constrain the applicability of conventional methods. In addition, dedicated design of the inverter enables transformer-less configuration. This digest reports some results that compare sinusoidal and rectangular perturbations in simulation and demonstrations of the analysis with the rectangular perturbation in experiments. The results showed good agreement, and it suggests the basic feasibility of the proposed method.