Soft switching in switched inertance hydraulic circuits

Alexander C. Yudell, James D. Van De Ven

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

Switched Inertance Hydraulic Systems (SIHS) use inductive, capacitive, and switching elements to boost or buck a pressure from a source to a load in an ideally lossless manner. Real SIHS circuits suffer a variety of energy losses, with throttling of flow during transitions of the high-speed valve resulting in 44% of overall losses. These throttling energy losses can be mitigated by applying the analog of zero-voltageswitching, a soft switching strategy, adopted from power electronics. In the soft switching circuit, the flow that would otherwise be throttled across the transitioning valve is stored in a capacitive element and bypassed through check valves in parallel with the switching valves. To evaluate the effectiveness of soft switching in a boost converter SIHS, a lumped parameter model was constructed. The model demonstrates that soft switching can improve the efficiency of the circuit up to 42% and extend the power delivery capabilities of the circuit by 76%.

Original languageEnglish (US)
Title of host publicationBATH/ASME 2016 Symposium on Fluid Power and Motion Control, FPMC 2016
PublisherAmerican Society of Mechanical Engineers
ISBN (Electronic)9780791850060
DOIs
StatePublished - Jan 1 2016
EventBATH/ASME 2016 Symposium on Fluid Power and Motion Control, FPMC 2016 - Bath, United Kingdom
Duration: Sep 7 2016Sep 9 2016

Publication series

NameBATH/ASME 2016 Symposium on Fluid Power and Motion Control, FPMC 2016

Other

OtherBATH/ASME 2016 Symposium on Fluid Power and Motion Control, FPMC 2016
Country/TerritoryUnited Kingdom
CityBath
Period9/7/169/9/16

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