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Switchmode Hydraulic Power Supply Theory

[+] Author Affiliations
Jianwei Cao, Linyi Gu, Feng Wang, Minxiu Qiu

Zhejiang University

Paper No. IMECE2005-79019, pp. 85-91; 7 pages
  • ASME 2005 International Mechanical Engineering Congress and Exposition
  • Fluid Power Systems and Technology
  • Orlando, Florida, USA, November 5 – 11, 2005
  • Conference Sponsors: Fluid Power Systems and Technology Division
  • ISBN: 0-7918-4220-7 | eISBN: 0-7918-3769-6
  • Copyright © 2005 by ASME


Switchmode hydraulic power supply is a new kind of energy-saving pressure converting system, which is originally proposed by the authors. It is mainly applied in multiple-actuator hydraulic systems, and installed between hydraulic pump and actuators (one switchmode hydraulic power supply for one actuator). It can provide pressure or flow rate that is adapted to the consumption of each actuator in the system by boosting or bucking the pressure, with low power loss, and conveniently, through high-speed switch valves, just like a hydraulic pressure transformer. There are two basic types of switchmode hydraulic power supply: pressure boost and pressure buck. Their structures and working principles are introduced. The dynamic characteristics of two typical types of switchmode hydraulic power supply, the pressure boost type and the pressure buck type, were analyzed through simulations and experiments. The performances were evaluated, and improvements on the efficiency of switchmode hydraulic power supply were proposed.

Copyright © 2005 by ASME



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