Title :
A controlled rectification method for automotive brushless DC generator with ultracapacitor energy storage
Author :
Xu Jiaqun ; Jiang Jie ; Cui Haotian
Author_Institution :
Coll. of Electron. Inf. & control Eng., Beijing Univ. of Technol., Beijing, China
Abstract :
Hybrid excitation brushless DC generator (BLDCG) and ultracapacitor are very promising in automotive integrated starter/generator (ISG) application. However, with a traditional diode rectification, it is difficult to regulate the DC-link voltage of BLDCG over a wide operating range at low cost. A controlled rectification method is proposed to improve generating capacity of BLDCG with ultracapacitor energy storage at low speed, winding energy storage can be transferred to DC-link bus, and thus DC-link voltage can be boosted to the required value. Steady state performance in continuous and discontinuous conduction mode is analyzed. Simulation and experiment results with ultracapacitor and load resistor prove the effectiveness of the controlled rectification method.
Keywords :
DC generators; automotive components; brushless DC motors; machine windings; rectification; resistors; supercapacitors; BLDCG; DC-link voltage; ISG application; automotive brushless DC generator; continuous conduction mode; controlled rectification method; diode rectification; discontinuous conduction mode; hybrid excitation brushless DC generator; integrated starter-generator application; load resistor; steady state performance; ultracapacitor energy storage; winding energy storage; Generators; Pulse width modulation; Resistance; Supercapacitors; Switches; Voltage control; Brushless DC generator; controlled rectification; integrated starter/generator; ultracapacitor;
Conference_Titel :
Power Electronics and Motion Control Conference and Exposition (PEMC), 2014 16th International
Conference_Location :
Antalya
DOI :
10.1109/EPEPEMC.2014.6980706
