Learn More
—With the advent of more stringent regulations related to emissions, fuel economy, and global warming, as well as energy resource constraints, electric, hybrid, and fuel-cell vehicles have attracted increasing attention from vehicle constructors, governments , and consumers. Research and development efforts have focused on developing advanced powertrains(More)
This paper deals with the series connection of two 5-phase synchronous machines supplied by a single 5-leg voltage source inverter. Using a specific modelling tool, design constraints on both machines are defined in order to control them independently. The effects of harmonics of back-electromotive force are then examined and improved control is deduced
This paper deals with a vector control of n-phase permanent magnet synchronous machine. To use control algorithms already developed for sine-wave 3-phase machines, the spectrum of back electromotive force (EMF) must contain only odd 2k+1 harmonics which verify the following inequality, 1 /spl les/ 2k+1 < n. In an experimental vector control of a 5-phase(More)
The storage system in this paper is made of supercapacitors. The main goal is to ensure an efficient energy management in a series hybrid vehicle, even if braking resistors are still needed. Design considerations are discussed. In particular the influence of the inductor resistance on the system stability is described. A maximum control structure is then(More)
In this paper the traction system of an automatic subway is described using several graphical tools: transfer functions, bond-graph, causal ordering graph, power flow diagram and energetic macroscopic representation. The aim of the paper is to highlight the interest of each tool for the analysis and the control of such a system