Optimal charging control for plug-in electric vehicles

Zhongjing Ma*, Duncan Callaway, Ian Hiskens

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

24 Citations (Scopus)

Abstract

This chapter discusses strategies to coordinate charging of autonomous plug-in electric vehicles (PEVs). The chapter briefly reviews the state of the art with respect to grid level analyses of PEV charging, and frames PEV coordination in terms of whether they are centralized or decentralized and whether they are optimal or near-optimal in some sense. The bulk of the chapter is devoted to presenting centralized and decentralized cost-optimizing frameworks for identifying and coordinating PEV charging. We use a centralized framework to show that "valley filling" charge patterns are globally optimal. Decentralized electricity cost minimizing frameworks for PEV charging can be framed in the context of noncooperative dynamic game theory and are related to recent work on mean field and potential games. Interestingly, in this context it can be difficult to achieve a Nash equilibrium (NE) if electricity price is the sole objective. The decentralized algorithm discussed in this chapter introduces a very small penalty term that damps unwanted negotiating dynamics. With this term, the decentralized algorithm takes on the form of a contraction mapping and, in the infinite system limit, the NE is unique and the algorithm will converge to it under relatively loose assumptions.

Original languageEnglish
Title of host publicationControl and Optimization Methods for Electric Smart Grids
PublisherSpringer New York
Pages259-273
Number of pages15
ISBN (Electronic)9781461416050
ISBN (Print)9781461416043
DOIs
Publication statusPublished - 1 Jan 2012

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Ma, Z., Callaway, D., & Hiskens, I. (2012). Optimal charging control for plug-in electric vehicles. In Control and Optimization Methods for Electric Smart Grids (pp. 259-273). Springer New York. https://doi.org/10.1007/978-1-4614-1605-13