Diesel engine ripple torque minimization for parallel type hybrid electric vehicle

Author

Lee, Hyeoun-Dong ; Sul, Seung-Ki

Author_Institution

Sch. of Electr. Eng., Seoul Nat. Univ., South Korea

Volume

2

fYear

1997

fDate

5-9 Oct 1997

Firstpage

942

Abstract

In this study, a real-time ripple torque minimization method for a parallel type hybrid electric vehicle is presented. After estimating the diesel engine ripple torque from real engine speed, a negative sign of estimated ripple torque is commanded to the electric machine which is directly coupled to the engine shaft. Thus, a prominent reduction of ripple torque results and speed fluctuations are remarkably reduced. Moreover, because it is possible to reduce the size and weight of the conventional flywheel, and thereby the energy losses in the flywheel every time the vehicle accelerates or decelerates, the overall driving efficiency of the hybrid electric vehicle is improved

Keywords

electric propulsion; electric vehicles; flywheels; internal combustion engines; machine control; minimisation; torque control; traction motor drives; diesel engine ripple torque; driving efficiency; electric machine; energy losses; flywheel; hybrid electric vehicle; real-time ripple torque minimization; traction motor drive; Diesel engines; Electric machines; Energy loss; Fluctuations; Flywheels; Hybrid electric vehicles; Minimization methods; Shafts; Torque; Vehicle driving;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 1997. Thirty-Second IAS Annual Meeting, IAS '97., Conference Record of the 1997 IEEE

Conference_Location

New Orleans, LA

ISSN

0197-2618

Print_ISBN

0-7803-4067-1

Type

conf

DOI

10.1109/IAS.1997.628974

Filename

628974