57 citations · 205 across the 15 of their papers we have counts for
17 papers
Rethinking electrified transportation: The case for dynamic wireless charging
Dipanjan Ghose, Junjie Qin, S. Sivaranjani
Long-term infrastructure investment often requires choosing between an established technology and a capital-intensive alternative that gains value as demand matures. For electric v…
SafePG: Safe and Globally Optimal Reinforcement Learning with Hard Constraints
Vipul K. Sharma, Wesley A. Suttle, S. Sivaranjani
We present an optimal and convergent model-free policy gradient (PG) reinforcement learning (RL) framework for controlling nonlinear dynamical systems under hard safety constraints…
Sampling-based Safe Reinforcement Learning for Nonlinear Dynamical Systems
Wesley A. Suttle, Vipul K. Sharma, Krishna C. Kosaraju +4
We develop provably safe and convergent reinforcement learning (RL) algorithms for control of nonlinear dynamical systems, bridging the gap between the hard safety guarantees of co…
Safe Control Design through Risk-Tunable Control Barrier Functions
Vipul K. Sharma, S. Sivaranjani
We consider the problem of designing controllers to guarantee safety in a class of nonlinear systems under uncertainties in the system dynamics and/or the environment. We define a…
Distributed Learning of Neural Lyapunov Functions for Large-Scale Networked Dissipative Systems
Amit Jena, Tong Huang, S. Sivaranjani +2
This paper considers the problem of characterizing the stability region of a large-scale networked system comprised of dissipative nonlinear subsystems, in a distributed and comput…
The Impact of Heavy-Duty Vehicle Electrification on Large Power Grids: a Synthetic Texas Case Study
Rayan El Helou, S. Sivaranjani, Dileep Kalathil +2
The electrification of heavy-duty vehicles (HDEVs) is a nascent and rapidly emerging avenue for decarbonization of the transportation sector. In this paper, we examine the impacts…
A Multi-scale Time-series Dataset with Benchmark for Machine Learning in Decarbonized Energy Grids
Xiangtian Zheng, Nan Xu, Loc Trinh +5
The electric grid is a key enabling infrastructure for the ambitious transition towards carbon neutrality as we grapple with climate change. With deepening penetration of renewable…
Safety during Transient Response in Direct Current Microgrids using Control Barrier Functions
K. C. Kosaraju, S. Sivaranjani, V. Gupta
We consider the problem of guaranteeing that the transient voltages and currents stay within prescribed bounds in Direct Current (DC) microgrids, when the controller does not have…
A Cross-Domain Approach to Analyzing the Short-Run Impact of COVID-19 on the U.S. Electricity Sector
Guangchun Ruan, Dongqi Wu, Xiangtian Zheng +5
The novel coronavirus disease (COVID-19) has rapidly spread around the globe in 2020, with the U.S. becoming the epicenter of COVID-19 cases since late March. As the U.S. begins to…
Data-driven identification of dissipative linear models for nonlinear systems
S. Sivaranjani, Etika Agarwal, Vijay Gupta
We consider the problem of identifying a dissipative linear model of an unknown nonlinear system that is known to be dissipative, from time domain input-output data. We first learn…
Sequential Synthesis of Distributed Controllers for Cascade Interconnected Systems
Etika Agarwal, S. Sivaranjani, Vijay Gupta +1
We consider the problem of designing distributed controllers to ensure passivity of a large-scale interconnection of linear subsystems connected in a cascade topology. The control…
Distributed Synthesis of Local Controllers for Networked Systems with Arbitrary Interconnection Topologies
Etika Agarwal, S. Sivaranjani, Vijay Gupta +1
We consider the problem of designing distributed controllers to guarantee dissipativity of a networked system comprised of dynamically coupled subsystems. We require that the contr…
Distributed Mixed Voltage Angle and Frequency Droop Control of Microgrid Interconnections with Loss of Distribution-PMU Measurements
S Sivaranjani, Etika Agarwal, Vijay Gupta +2
Recent advances in distribution-level phasor measurement unit (D-PMU) technology have enabled the use of voltage phase angle measurements for direct load sharing control in distrib…
Mixed Voltage Angle and Frequency Droop Control for Transient Stability of Interconnected Microgrids with Loss of PMU Measurements
S Sivaranjani, Etika Agarwal, Le Xie +2
We consider the problem of guaranteeing transient stability of a network of interconnected angle droop controlled microgrids, where voltage phase angle measurements from phasor mea…
Conic-sector-based analysis and control synthesis for linear parameter varying systems
S Sivaranjani, James Richard Forbes, Peter Seiler +1
We present a conic sector theorem for linear parameter varying (LPV) systems in which the traditional definition of conicity is violated for certain values of the parameter. We sho…
Provably Safe Cruise Control of Vehicular Platoons
Sadra Sadraddini, Sivaranjani S, Vijay Gupta +1
We synthesize performance-aware safe cruise control policies for longitudinal motion of platoons of autonomous vehicles. Using set-invariance theories, we guarantee infinite-time c…
Lyapunov Control of Quantum Systems with Applications to Quantum Computing
K. P. Nagarjun, S. Sivaranjani, George Koshy
In the design of complex quantum systems like ion traps for quantum computing, it is usually desired to stabilize a particular system state or make the system state track a desired…