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Energy saving hydraulic drives for industrial machines

Energy saving hydraulic drives for industrial machines

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Energy saving hydraulic drives for industrial machines

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  1. 22nd International Conference on Hydraulics and Pneumatics Energy saving hydraulic drives for industrial machines Tomáš Krannich 4.12.2013

  2. 22nd International Conference on Hydraulics and Pneumatics ŽĎAS LVH 2500 The machine is equipped with a lower hydraulic drive. Spindle diameter = 500 mm , slide speed = 1 m / s Technical parameters: Rated deformation force ( tons ) : 2500 Number of strokes ( 1/min ) : 20 Rated power stroke (kgm ): 35000 Stroke ( mm ) : 500 Slide area ( mm x mm ) : 1050x1200 Gross Vehicle Weight (kg ) : 108400 Energy saving hydraulic drives of industrial machines

  3. 22nd International Conference on Hydraulics and Pneumatics Braking large inertia Mechanical energy Hydraulic energy Throttling of hydraulic flow Hydraulic accumulator Electric energy The braking resistor- It is used primarily as a protection element Heat loss Second Recovery in el. network- The need for phasing, especially for higherperformance Accumulation el. energy in batteries, capacitors- High price and low capacity (large number) Power supply to other drive- Calculation of operating parameters Energy saving hydraulic drives of industrial machines

  4. 22nd International Conference on Hydraulics and Pneumatics Energy recovery - Electric Hydraulic circuits - closed Energy saving hydraulic drives of industrial machines

  5. 22nd International Conference on Hydraulics and Pneumatics Energy recovery - Electric Hydraulic circuits - closed Acceleration Energy saving hydraulic drives of industrial machines

  6. 22nd International Conference on Hydraulics and Pneumatics Energy recovery - Electric b) Hydraulic circuits - closed Decceleration Energy saving hydraulic drives of industrial machines

  7. 22nd International Conference on Hydraulics and Pneumatics Electro-hydraulic drive wiring diagram 1. Frequency convertor SKB3400075 2. Asynchronous induction motor 1,1kW 3. Hydraulic generator Parker PGM511 4. Hydraulic motor MRAK 6 5. Flywheel 6. 7. Hydraulic valves 8. Boost pump 9. PC – with measuring card 10. Revolution, pressure sensors Energy saving hydraulic drives of industrial machines

  8. 22nd International Conference on Hydraulics and Pneumatics STAND Hydraulic motor Parker PGM511 Flywheel Asynchronous induction motor 1,1kW Hydraulic motor MRAK 6 Frequency convertor SKB3400075 Hydraulic parts ArgoHytos Pressure valves PC – with measuring card Boost pump II. Flywheel II. PC – with measuring card II. Asynchronous induction motor 1,1kW Braking resistor RPM and pressure sensors Energy saving hydraulic drives of industrial machines

  9. 22nd International Conference on Hydraulics and Pneumatics Energy flow of electro-hydraulic system in the second phase – flywheel deceleration Schema at SW - Dynast Energy saving hydraulic drives of industrial machines

  10. 22nd International Conference on Hydraulics and Pneumatics Energy saving hydraulic drives of industrial machines

  11. 22nd International Conference on Hydraulics and Pneumatics Energy saving hydraulic drives of industrial machines

  12. 22nd International Conference on Hydraulics and Pneumatics Braking torque measurement Torque of Hydromotor MRAK 6 Torque of Generator Parker PGM511 Torque [Nm] Torque [Nm] Time [s] Time [s] Energy saving hydraulic drives of industrial machines

  13. 22nd International Conference on Hydraulics and Pneumatics Specified parameters: Energy saving hydraulic drives of industrial machines

  14. 22nd International Conference on Hydraulics and Pneumatics STAND - adjustment Flywheel 1 Diameter = 400 mm Thickness = 120 mm n max = 210 RPM Inertia = 2,17 kg.m2 Maximum kinetic energy = 600 J Flywheel 2 - Power supply to other drive Energy saving hydraulic drives of industrial machines

  15. Graph 1 22nd International Conference on Hydraulics and Pneumatics Graph 2 Flywheel 2 Energy saving hydraulic drives of industrial machines

  16. 22nd International Conference on Hydraulics and Pneumatics Speed control - Matlab The input values Energy saving hydraulic drives of industrial machines

  17. 22nd International Conference on Hydraulics and Pneumatics Energy saving hydraulic drives of industrial machines

  18. 22nd International Conference on Hydraulics and Pneumatics Conclusion It was created stand for energy recovery - Pressure / electricimportant parametersPerformance - total power: 1000 W - 600 JoulesFlywheel 1 - moment of inertia and speed: 2.17 kg.m2, 210 RPMTorque - max braking time, maximum  pressure on HM: 0.5 s, 80 bar Recovery.Current max 2A at the time of 0.5 sThe longest recovery time of about 1s at current cca 1AShattered energy in the braking resistor - about 160 WEnergy utilization for the second drive: the size of the flywheel 2 diametr 144, speed 700RPM Energy saving hydraulic drives of industrial machines

  19. 22nd International Conference on Hydraulics and Pneumatics Thank you for your attention Energy saving hydraulic drives of industrial machines