Title :
A high-efficiency high-power-generation system for automobiles
Author :
Naidu, Malakondaiah ; Boules, Nady ; Henry, Rassem
Author_Institution :
Dept. of Electr. & Electron. Eng., Gen. Motors Res. Labs., Warren, MI, USA
Abstract :
This paper presents a new scheme for the efficient generation of high electric power demanded for future automobiles. The new system consists of a permanent-magnet (PM) alternator having high-energy MAGNEQUENCH (MQ) magnets and split winding and a novel electronic voltage regulation scheme. A proof-of-concept system, capable of providing 100/250 A (idle/cruising) at 14 V, has been built and tested in the laboratory with encouraging results. This high output is provided at 15-20 percentage points higher efficiencies than conventional automotive alternators, which translates into considerable fuel economy savings. The system is 8 dB quieter and has a rotor inertia of only 2/3 that of an equivalent production alternator, thus allowing for a belt drive without excessive slippage
Keywords :
alternators; automobiles; automotive electronics; controllers; permanent magnet generators; voltage control; voltage regulators; 100 to 250 A; 14 V; automobiles; belt drive; electronic voltage regulation scheme; fuel economy savings; high-efficiency; high-energy MAGNEQUENCH magnets; high-power-generation system; permanent-magnet alternator; proof-of-concept system; rotor inertia; split winding; voltage regulator; Alternators; Automobiles; Automotive engineering; Fuel economy; Laboratories; Magnets; Power generation; Rotors; System testing; Voltage control;
Journal_Title :
Industry Applications, IEEE Transactions on
