Vehicle Evaluation, Battery Modeling, and Fleet-testing Experiences in Hawaii

On electric vehicle battery charger modeling

The increase of electric vehicle (EV) battery chargers connected to electric networks could lead to future harmonic problems in power systems. These loads are nonlinear devices that inject harmonic currents and pollute network voltages. Thus, battery charger modeling must be studied in detail to determine their harmonic emissions and prevent future problems. This paper investigates EV battery c...

In-Vehicle Testing and Computer Modeling of Electric Vehicle Batteries

A combined simulation and testing approach has been developed to evaluate battery packs in real driving conditions as opposed to purely experimental testing. The new approach is costeffective, greatly accelerates battery development cycle, and enables innovative battery design and optimization. Several fundamental models for valve-regulated lead-acid (VRLA), nickel-metal hydride (NiMH), and Li-...

Singapore Road Vehicle Fleet Evolution

Vehicle fleet modeling is a useful tool to analyze the dynamics of motor vehicles and their environmental impact at a macroscopic level, and has been applied in the USA and Europe. In this article, a road fleet model is constructed for the city-state Singapore. Policies that control vehicle ownership and congestion road pricing employed since 1998 differentiate Singapore’s vehicle market from o...

Symbolic Math-based Battery Modeling for Electric Vehicle Simulation

We present results of a math-based model of a battery electric vehicle (BEV) designed in MapleSim1. This model has the benefits of being described in a physically consistent way using acausal system components. We used a battery model by Chen and Rinćon-Mora to develop a math-based model of a complete battery pack, and developed simple power controller, motor/generator, terrain, and drive-cycle...

VEHICLE FLEET PLANNING: PERSPECTIVES AND PROSPECTS by