84 citations · 272 across the 25 of their papers we have counts for
25 papers
An extended Perron-Frobenius operator filter for nonlinear state estimation
Yuta Miwa, Yoshihiko Susuki, Shunji Kotsuki
We propose an extended Perron--Frobenius Operator Filter (PFOF) for nonlinear state estimation. The method learns the Perron--Frobenius operator, an infinite-dimensional linear ope…
On Koopman Resolvents and Frequency Response of Nonlinear Systems
Yoshihiko Susuki, Natsuki Katayama, Alexandre Mauroy +1
This paper proposes a novel formulation of frequency response for nonlinear systems in the Koopman operator framework. This framework is a promising direction for the analysis and…
Hybrid dynamical systems modeling of power systems
B. G. Odunlami, M. Netto, Y. Susuki
The increasing integration of renewable energy sources has introduced complex dynamic behavior in power systems that challenge the adequacy of traditional continuous-time modeling…
Model Predictive Control of Smart Districts Participating in Frequency Regulation Market: A Case Study of Using Heating Network Storage
Hikaru Hoshino, T. John Koo, Yun-Chung Chu +1
Flexibility provided by Combined Heat and Power (CHP) units in district heating networks is an important means to cope with increasing penetration of intermittent renewable energy…
Dissipativity of nonlinear ODE model of distribution voltage profile
Chiaki Kojima, Yuya Muto, Yoshihiko Susuki
In this paper, we consider a power distribution system consisting of a straight feeder line. A nonlinear ordinary differential equation (ODE) model is used to describe the voltage…
Control of Oscillatory Temperature Field in a Building via Damping Assignment to Nonlinear Koopman Mode
Yoshihiko Susuki, Kohei Eto, Naoto Hiramatsu +1
This paper addresses a control problem on air-conditioning systems in buildings that is regarded as a control practice of nonlinear distributed-parameter systems. Specifically, we…
Koopman-Model Predictive Control with Signal Temporal Logic Specifications for Temperature Regulation of a Warm-Water Supply System
Ryo Miyashita, Yoshihiko Susuki, Atsushi Ishigame
Control of warm-water supply for dialysis treatment in a hospital environment is typical of safety-critical control problems. In order to guarantee the continuity of warm-water sup…
A mode-in-state contribution factor based on Koopman operator and its application to power system analysis
Kenji Takamichi, Yoshihiko Susuki, Marcos Netto +1
This paper proposes a mode-in-state contribution factor for a class of nonlinear dynamical systems by utilizing spectral properties of the Koopman operator and sensitivity analysis…
Asymptotic Assessment of Distribution Voltage Profile Using a Nonlinear ODE Model
Haruki Tadano, Yoshihiko Susuki, Atsushi Ishigame
The promising increase of Electric Vehicles (EVs) in our society poses a challenging problem on the impact assessment of their charging/discharging to power distribution grids. Thi…
Autonomous Vehicle-to-Grid Design for Provision of Frequency Control Ancillary Service and Distribution Voltage Regulation
Shota Yumiki, Yoshihiko Susuki, Yuta Oshikubo +6
We develop a system-level design for the provision of Ancillary Service (AS) for control of electric power grids by in-vehicle batteries, suitably applied to Electric Vehicles (EVs…
Characterizing scale dependence of effective diffusion driven by fluid flows
Yohei Kono, Yoshihiko Susuki, Takashi Hikihara
We study the scale dependence of effective diffusion of fluid tracers, specifically, its dependence on the Péclet number, a dimensionless parameter of the ratio between advection a…
Koopman Resolvent: A Laplace-Domain Analysis of Nonlinear Autonomous Dynamical Systems
Yoshihiko Susuki, Alexandre Mauroy, Igor Mezic
The motivation of our research is to establish a Laplace-domain theory that provides principles and methodology to analyze and synthesize systems with nonlinear dynamics. A semigro…
Koopman Mode Decomposition of Oscillatory Temperature Field inside a Room
Naoto Hiramatsu, Yoshihiko Susuki, Atsushi Ishigame
Koopman mode decomposition (KMD) is a technique of nonlinear time-series analysis capable of decomposing data on complex spatio temporal dynamics into multiple modes oscillating wi…
On analytical construction of observable functions in extended dynamic mode decomposition for nonlinear estimation and prediction
Marcos Netto, Yoshihiko Susuki, Venkat Krishnan +1
We propose an analytical construction of observable functions in the extended dynamic mode decomposition (EDMD) algorithm. EDMD is a numerical method for approximating the spectral…
Application of Gaussian Process Regression to Koopman Mode Decomposition for Noisy Dynamic Data
Akitoshi Masuda, Yoshihiko Susuki, Manel Martínez-Ramón +2
Koopman Mode Decomposition (KMD) is a technique of nonlinear time-series analysis that originates from point spectrum of the Koopman operator defined for an underlying nonlinear dy…
A Lumped-Parameter Model of Multiscale Dynamics in Steam Supply Systems
Hikaru Hoshino, Yoshihiko Susuki, Takashi Hikihara
This paper focuses on multiscale dynamics occurring in steam supply systems. The dynamics of interest are originally described by a distributed-parameter model for fast steam flows…
Synthesis of Spatial Charging/Discharging Patterns of In-Vehicle Batteries for Provision of Ancillary Service and Mitigation of Voltage Impact
Naoto Mizuta, Yoshihiko Susuki, Yutaka Ota +1
We develop an algorithm for synthesizing a spatial pattern of charging/discharging operations of in-vehicle batteries for provision of Ancillary Service (AS) in power distribution…
Dynamic Security Analysis of Power Systems by a Sampling-Based Algorithm
Qiang Wu, T. John Koo, Yoshihiko Susuki
Dynamic security analysis is an important problem of power systems on ensuring safe operation and stable power supply even when certain faults occur. No matter such faults are caus…
Structural Analysis and Control of a Model of Two-site Electricity and Heat Supply
Hikaru Hoshino, Yoshihiko Susuki, T. John Koo +1
This paper introduces a control problem of regulation of energy flows in a two-site electricity and heat supply system, where two Combined Heat and Power (CHP) plants are interconn…
Invariant Sets in Quasiperiodically Forced Dynamical Systems
Yoshihiko Susuki, Igor Mezić
This paper addresses structures of state space in quasiperiodically forced dynamical systems. We develop a theory of ergodic partition of state space in a class of measure-preservi…
Data-Driven Participation Factors for Nonlinear Systems Based on Koopman Mode Decomposition
Marcos Netto, Yoshihiko Susuki, Lamine Mili
This paper develops a novel data-driven technique to compute the participation factors for nonlinear systems based on the Koopman mode decomposition. Provided that certain conditio…
Estimation of Power System Inertia Using Nonlinear Koopman Modes
Yoshihiko Susuki, Ryo Hamasaki, Atsushi Ishigame
We report a new approach to estimating power system inertia directly from time-series data on power system dynamics. The approach is based on the so-called Koopman Mode Decompositi…
Power grid transient stabilization using Koopman model predictive control
Milan Korda, Yoshihiko Susuki, Igor Mezić
This work addresses the problem of transient stabilization of a power grid, following a destabilizing disturbance. The model considered is the cascade interconnection of seven New…
On the Spectral Equivalence of Koopman Operators through Delay Embedding
Yoshihiko Susuki, Kyoichi Sako, Takashi Hikihara
We provide one theorem of spectral equivalence of Koopman operators of an original dynamical system and its reconstructed one through the delay-embedding technique. The theorem is…