Title :
Loss minimization of electric drive systems using a DC/DC converter and an optimized battery voltage in automotive applications
Author :
Tenner, Stephan ; Gunther, Stephan ; Hofmann, Wilfried
Author_Institution :
Inst. of Electr. Power Eng., Dresden Univ. of Technol., Dresden, Germany
Abstract :
Voltage source inverters generally feed the traction motor from a battery in automotive applications. By implementing a DC/DC converter between battery and inverter, the DC-link voltage is adjustable. This paper discusses the benefits of the variable DC-link voltage as an additional degree of freedom for a loss minimized control of electric drives in battery supplied vehicles. Inverter systems with and without DC/DC converter are compared and operating areas of improved efficiency are identified. Energy saving potentials resulting from an optimized battery voltage are discussed for different driving cycles.
Keywords :
DC-DC power convertors; battery powered vehicles; invertors; machine control; permanent magnet motors; synchronous motor drives; traction motor drives; DC-DC converter; automotive application; battery supplied vehicles; interior permanent magnet synchronous machine; loss minimized electric drive control; optimized battery voltage; traction motor; variable DC-link voltage; voltage source inverter; Batteries; DC-DC power converters; Inverters; Iron; Resistance; Torque; Transistors; Automotive; Battery; DC/DC Converter; Interior Permanent Magnet Synchronous Machine; Loss Minimization; State of Charge; Voltage Source Inverter;
Conference_Titel :
Vehicle Power and Propulsion Conference (VPPC), 2011 IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-61284-248-6
Electronic_ISBN :
Pending
DOI :
10.1109/VPPC.2011.6043024
