Switching Frequency Optimization of Boost Converter for HEV Applications Ford Motor Company

Format:

Conference/Event

Author/Creator:

Yang, Yang, author.

Contributor:

Alam, Mohammed Khorshed

Chen, Lihua

Xu, Fan

Zhou, Yan

Conference Name:

WCX 17: SAE World Congress Experience (2017-04-04 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2017

Summary:

AbstractA hybrid electric vehicle (HEV) can utilize the electromechanical path to optimize the ICE operation and implement the regenerative brake, the fuel economy of a vehicle therefore gets improved significantly. Bi-directional Boost converter is usually used in an electric drive system to boost the high voltage (HV) battery voltage to a higher dc-link voltage. The main advantages for a system with Boost converter is that the traction inverter is de-coupled from battery voltage variations causing it to be over-sized. When designing this Boost converter, the switching frequency is a key parameter for the converter design. Higher switching frequency will lead to higher switching loss of power device (IGBT +diode), moreover, it has significant impact on inductor ripple current, HV battery ripple current and input capacitor current. Therefore, the switching frequency is one of the most important parameters for the design and selection of both active and passive components. This paper investigated the switching frequency optimization with consideration of ripple current of input battery, ripple current and thermal stress of input capacitor, inductor and whole converter efficiency. Both the analysis and test results are provided in this paper, which verified that Boost converter with optimized switching frequency could achieve better tradeoff between converter size, cost, and system efficiency

Notes:

Vendor supplied data

Publisher Number:

2017-01-1236

Access Restriction:

Restricted for use by site license