1 citations · 3 across the 21 of their papers we have counts for
21 papers
Negative Imaginary and Passivity Properties of Synchronous Machine Systems
Maryam Khodabakhshloo, Elizabeth L. Ratnam, Ian R. Petersen
The recent rapid proliferation of renewable energy is fundamentally changing the dynamic operations of power systems, necessitating new approaches to assess stability for these hig…
Equilibrium points and stability of synchronous machine systems
Maryam Khodabakhshloo, Elizabeth L. Ratnam, Ian R. Petersen
This paper investigates equilibrium points and stability in two synchronous machine configurations: (i) a single generator with an impedance load and (ii) two interconnected machin…
An Electricity Market with Reactive Power Trading: Incorporating Dynamic Operating Envelopes
Zeinab Salehi, Elizabeth L. Ratnam, Yijun Chen +3
Electricity market design that accounts for grid constraints such as voltage and thermal limits at the distribution level can increase opportunities for the grid integration of Dis…
Measurement-based Initial Point Smoothing and Control Approach to Quantum Memory Systems
Igor G. Vladimirov, Ian R. Petersen, Guodong Shi
This paper is concerned with a quantum memory system for storing quantum information in the form of its initial dynamic variables in the presence of environmental noise. In order t…
Quantum memory optimisation using finite-horizon, decoherence time and discounted mean-square performance criteria
Igor G. Vladimirov, Ian R. Petersen, Guodong Shi
This paper is concerned with open quantum memory systems for approximately retaining quantum information, such as initial dynamic variables or quantum states to be stored over a bo…
Peer-to-Peer Energy Markets With Uniform Pricing: A Dynamic Operating Envelope Approach
Zeinab Salehi, Yijun Chen, Ian R. Petersen +3
The recent widespread adoption of rooftop solar backed by battery storage is enabling energy customers to both produce and consume electricity (i.e., prosumers of electricity). To…
Decoherence time maximization and partial isolation for open quantum harmonic oscillator memory networks
Igor G. Vladimirov, Ian R. Petersen, Guodong Shi
This paper considers a network of open quantum harmonic oscillators which interact with their neighbours through direct energy and field-mediated couplings and also with external q…
Electric Grid Topology and Admittance Estimation: Quantifying Phasor-based Measurement Requirements
Norak Rin, Iman Shames, Ian R. Petersen +1
In this paper, we quantify voltage and current phasor-based measurement requirements for the unique estimation of the electric grid topology and admittance parameters. Our approach…
Optimization of partially isolated quantum harmonic oscillator memory systems by mean square decoherence time criteria
Igor G. Vladimirov, Ian R. Petersen
This paper is concerned with open quantum harmonic oscillators with position-momentum system variables, whose internal dynamics and interaction with the environment are governed by…
On the Stability of Networked Nonlinear Negative Imaginary Systems with Applications to Electrical Power Systems
Yijun Chen, Kanghong Shi, Ian R. Petersen +1
In the transition to achieving net zero emissions, it has been suggested that a substantial expansion of electric power grids will be necessary to support emerging renewable energy…
Discrete-time Integral Resonant Control of Negative Imaginary Systems: Application to a High-speed Nanopositioner
Kanghong Shi, Erfan Khodabakhshi, Prosanto Biswas +2
We propose a discrete-time integral resonant control (IRC) approach for negative imaginary (NI) systems, which overcomes several limitations of continuous-time IRC. We show that a…
Unified Control of Voltage, Frequency and Angle in Electrical Power Systems: A Passivity and Negative-Imaginary based Approach
Yijun Chen, Kanghong Shi, Ian R. Petersen +1
This paper proposes a unified methodology for voltage regulation, frequency synchronization, and rotor angle control in power transmission systems considering a one-axis generator…
Digital control of negative imaginary systems: a discrete-time hybrid integrator-gain system approach
Kanghong Shi, Ian R. Petersen
A hybrid integrator-gain system (HIGS) is a control element that switches between an integrator and a gain, which overcomes some inherent limitations of linear controllers. In this…
Hybrid integrator-gain system based integral resonant controllers for negative imaginary systems
Kanghong Shi, Ian R. Petersen
We introduce a hybrid control system called a hybrid integrator-gain system (HIGS) based integral resonant controller (IRC) to stabilize negative imaginary (NI) systems. A HIGS-bas…
Competitive Equilibrium in Microgrids With Dynamic Loads
Zeinab Salehi, Yijun Chen, Ian R. Petersen +2
In this paper, we consider microgrids that interconnect prosumers with distributed energy resources and dynamic loads. Prosumers are connected through the microgrid to trade energy…
Discrete-time Negative Imaginary Systems from ZOH Sampling
Kanghong Shi, Ian R. Petersen, Igor G. Vladimirov
A new definition of discrete-time negative imaginary (NI) systems is provided. This definition characterizes the dissipative property of a zero-order hold sampled continuous-time N…
A Nonlinear Negative Imaginary Systems Framework with Actuator Saturation for Control of Electrical Power Systems
Yijun Chen, Kanghong Shi, Ian R. Petersen +1
In the transition to net zero, it has been suggested that a massive expansion of the electric power grid will be required to support emerging renewable energy zones. In this paper,…
Decoherence time control by interconnection for finite-level quantum memory systems
Igor G. Vladimirov, Ian R. Petersen
This paper is concerned with open quantum systems whose dynamic variables have an algebraic structure, similar to that of the Pauli matrices for finite-level systems. The Hamiltoni…
Decoherence time in quantum harmonic oscillators as quantum memory systems
Igor G. Vladimirov, Ian R. Petersen
This paper is concerned with open quantum harmonic oscillators (OQHOs) described by linear quantum stochastic differential equations. This framework includes isolated oscillators w…
Design and Stability of Angle based Feedback Control in Power Systems: A Negative-Imaginary Approach
Yijun Chen, Ian R. Petersen, Elizabeth L. Ratnam
This paper considers a power transmission network characterized by interconnected nonlinear swing dynamics on generator buses. At the steady state, frequencies across different bus…
Transactive Multi-Agent Systems over Flow Networks
Yijun Chen, Zeinab Salehi, Elizabeth L. Ratnam +2
This paper presented insights into the implementation of transactive multi-agent systems over flow networks where local resources are decentralized. Agents have local resource dema…