Power supply arrangement for electro-hydraulic control systems i

Details Power supply arrangement for electro-hydraulic control systems i Power supply arrangement for electro-hydraulic control systems i

1988-05-09

1989-11-21

Shoop Jr., William M.

Electrical transmission or interconnection systems

Plural load circuit systems

307 39, H02J 100

Patent

active

048825018

ABSTRACT:
A power supply arrangement which is intended, in particular, for intrinsically safe electro-hydraulic control systems for mining and comparable applications, in which several control units and loads controlled thereby are supplied as a group from a common constant voltage source. The voltage source has a current capacity which is smaller than the total current requirement of all the units and loads supplied by it. Each control unit has actual value current measuring device and two controllable current sources which are connected to a common potential line which can simultanously act as a data bus. The arrangement enables the respective effective dynamic current consumption and demands of the control units and loads to be ascertained to enable the available power of the constant voltage source to be determined at any time at the individual control units. The available power of the source can be utilised for an optionally time-staggered ordered control process according to predetermined priorities without overloading the voltage source.

REFERENCES:
patent: 4245319 (1981-01-01), Hedges
patent: 4336462 (1982-06-01), Hedges et al.
patent: 4471232 (1984-09-01), Peddie et al.
patent: 4549274 (1985-10-01), Lerner et al.

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