Module 4: DC-DC Converters

NPTEL Electrical Engineering Introduction to Hybrid and Electric Vehicles Joint initiative of IITs and IISc Funded by MHRD Page 1 of 55 Module 4: DC-DC Converters Lec 9: DC-DC Converters for EV and HEV Applications DC-DC Converters for EV and HEV Applications Introduction The topics covered in this chapter are as follows: EV and HEV configuration based on power Converters Classification of Converters Principle of Step Down Operation Buck converter with RLE Load Buck converter with RL Load and Filter Electric Vehicle (EV) and Hybrid Electric Vehicle (HEV) Configurations In Figure 1 the general configuration of the EV and HEV is shown. Upon examination of the general configurations it can be seen that there are two major power electronic units DC-DC converter DC-AC inverter Figure 1:General Configuration of a Electric Vehicle [1] NPTEL Electrical Engineering Introduction to Hybrid and Electric Vehicles Joint initiative of IITs and IISc Funded by MHRD Page 2 of 55 Usually AC motors are used in HEVs or EVs for traction and they are fed by inverter and this inverter is fed by DC-DC converter (Figure 1).

regenerative braking is required. The power flow in a bi-directional converter is usually from a low voltage end such as battery or a supercapacitor to a high voltage side and is referred to as boost operation. During regenerative braking, the power flows back to the low voltage bus to recharge the batteries know as buck mode operation.

Loading..

Tags:

  High, Converter, Voltage, Boost, High voltage

Information

Related search queries