Z-Source Power Converter for High-Efficiency Power Conversion

Introduction

 

Power converters, also known as power inverters, are necessary components to all electrical/electronic products. Due to their ubiquity, power converter attributes such as efficiency, robustness, cost, and peak power are very important.

 

Description of Technology

 

The invention is an Impedance Source (Z-source) Power Converter. The converter performs both buck and boost conversion, and one of DC/DC, AC/DC, or AC/AC conversion.

This converter increases robustness and efficiency while maintaining the desirable traits of prior converters (e.g. V- and I- converters). It can be used for high power applications like electric fuel cells and automobiles.

 

Key Benefits

  • Increased Robustness: The topology of the Impedance Source (or Z-Source) is immune to EMI compared to standard V- and I- converters.
  • Broader Applicability: The output voltage of Impedance Source (Z-Source) converter can be lower and higher than its input; such converters are known as buck-boost converters. Standard V- and I- converters restrict output to either lower or higher, known as buck or boost converters.
  • Greater Efficiency: Impedance Source (Z-Source) converters reduce common-mode voltage leading to greater converter efficiency.

 

Applications

 

Power Conversion, Power Distribution, and Automotive

 

Development Status

 

The invention has been prototyped.

 

Patent Status

 

US 7130205 (issued Oct 31, 2006)

 

Inventors

 

Fang Peng

 

Tech ID

 

TEC2002-0039

 

Patent Information:

Category(s):

For Information, Contact:

Raymond DeVito
Technology Manager
Michigan State University
devitora@msu.edu
Inventors:
Fang Peng