Abstract:
Electrochemical impedance spectroscopy (EIS) is a helpful tool to understand how a battery is behaving and how it degrades. One of the disadvantages is that it is typical...Show MoreMetadata
Abstract:
Electrochemical impedance spectroscopy (EIS) is a helpful tool to understand how a battery is behaving and how it degrades. One of the disadvantages is that it is typically an “off-line” process. This paper investigates an alternative method of looking at impedance spectroscopy of a battery system while it is on-line and operational by manipulating the switching pattern of the dc-dc converter to generate low frequency harmonics in conjunction with the normal high frequency switching pattern to determine impedance in real time. However, this adds extra ripple on the inductor which needs to be included in the design calculations. The paper describes the methodology and presents some experimental results in conjunction with EIS results to illustrate the concept.
Published in: 2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)
Date of Conference: 05-09 September 2016
Date Added to IEEE Xplore: 27 October 2016
ISBN Information:
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- IEEE Keywords
- Index Terms
- Impedance Spectroscopy ,
- Electrochemical Impedance Spectroscopy ,
- Dcdc Converter ,
- Lower Harmonics ,
- Results In Conjunction ,
- Waveform ,
- Pulse Width ,
- State Of Charge ,
- Equivalent Circuit ,
- Duty Cycle ,
- Peak-to-peak ,
- Square Wave ,
- Time Shift ,
- Fourier Series ,
- Inductor Current ,
- Low-frequency Components ,
- Current Decreases ,
- Electrochemical Impedance Spectroscopy Measurements ,
- Average Cycle ,
- Voltage Ripple ,
- Online Techniques ,
- Electrochemical Impedance Spectroscopy Data ,
- Battery Current ,
- Power Electronic Converters ,
- Battery Chemistry ,
- Low-frequency Signals ,
- Low Ripple ,
- MATLAB Simulink
- Author Keywords
Contents Keywords assist with retrieval of results and provide a means to discovering other relevant content. Learn more.
- IEEE Keywords
- Index Terms
- Impedance Spectroscopy ,
- Electrochemical Impedance Spectroscopy ,
- Dcdc Converter ,
- Lower Harmonics ,
- Results In Conjunction ,
- Waveform ,
- Pulse Width ,
- State Of Charge ,
- Equivalent Circuit ,
- Duty Cycle ,
- Peak-to-peak ,
- Square Wave ,
- Time Shift ,
- Fourier Series ,
- Inductor Current ,
- Low-frequency Components ,
- Current Decreases ,
- Electrochemical Impedance Spectroscopy Measurements ,
- Average Cycle ,
- Voltage Ripple ,
- Online Techniques ,
- Electrochemical Impedance Spectroscopy Data ,
- Battery Current ,
- Power Electronic Converters ,
- Battery Chemistry ,
- Low-frequency Signals ,
- Low Ripple ,
- MATLAB Simulink
- Author Keywords
