DE1977075U - AGGREGATE FOR THE ELECTRICITY OF CONSUMERS. - Google Patents

Description

SIEMENS SHARESELiS CHA FT

Γ. H. U

Erlangen, November 15, 1967 Werner-von-Siemens-Str. 50

PIA 67/1610
PLA 9/3 90/195

Aggregate for the power supply of consumers

The! Price increase "concerns a unit for the power supply ύοίι consumers, rlie normally from an alternating current network and" when the AC network is disturbed, from a generator that can be coupled to an internal combustion engine, the shaft of which is coupled to a "flywheel.

Kr / Stä

• ■. · - PIA 67/1610

In long-term test stands, on airfields for lighting systems and the like. Like. Pilot power units are used as power sources in the event of a network failure. In such Uotstromaggiegaten there is an internal combustion engine Fixed to the generator via an elastic coupling. If the alternating current network fails, the combustion _ engine started electrically or by means of compressed air.

At_ airfields during flight operations with reduced weather minimums For part of the lighting system, an interruption time of less than or equal to one second is required, while for the rest of the lighting system ·> A downtime of less than or equal to 15 seconds is permitted will. With a normal emergency generator, the time is ■ until the combustion engine takes over the drive in pure emergency power mode can, more than a second. It is therefore necessary that a so-called rapid readiness system for part of the lighting system is available. With such a rapid readiness unit an electric clutch is arranged between the diesel engine and the flywheel, while the flywheel has a during the Operation non-releasable coupling is connected to the generator. Sin motor normally overdrives when the unit is ready a V-belt drive drives the generator with the flywheel, while the electric coupling to the diesel engine is de-energized and the diesel engine stands still. In the event of a power failure, the electrical coupling is excited and thereby the diesel engine ripped up, which then takes over the drive of the unit within a fraction of a second.

The use of a rapid readiness unit makes it necessary that a motor, the flywheel and the generator run continuously

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: PLA 67/1610

Speed holds. This constantly results in high operating costs.

According to the above-mentioned unit for the power supply of consumers, the generator is arranged between the internal combustion engine and the flywheel and with its two shaft ends over Clutches that can be released during operation are also connected to the internal combustion engine and the flywheel. This arrangement allows when the Coupling between generator and flywheel has exactly the same operating modes as a normal rapid readiness unit. If, on the other hand, the coupling between the generator and the flywheel is released (i.e. the flywheel is disconnected from the generator) and the clutch inserted between the combustion engine and generator, the unit can be operated as a completely normal emergency power unit, since the The flywheel remains uncoupled. When the centrifugal mass is uncoupled, the genset stands as a normal emergency power generator even when it is at a standstill on standby, while it is running as a rapid readiness unit with the flywheel coupled to the generator is on standby. In this state, the clutch to the diesel engine is released. It can be switched on automatically in the event of a power failure will. The new unit can handle two modes of operation.

Larüber hinalfs, the new unit offers a slightly larger power reserve when taking over loads. A normal emergency unit namely has a somewhat lower rated IT power than that of the prime mover corresponds, because this requires an excess of power in order to maintain the reduced speed of the after a power failure and load takeover To increase the centrifugal mass back to the nominal value. This performance

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PLA 67/1610

With the known unit, reserve is only about 4 to 10 seconds. long - used to accelerate the flywheel.

If the new unit is used for lighting systems, it is possible to switch all consumers that can only tolerate a downtime of less than a second to the unit immediately after a power failure and then after a waiting time of around 10 seconds to switch the others Switch on the lighting system to the same unit afterwards, since at this point the speed has already been caught up and the full "nominal power of the drive machine is available. A power reserve is therefore no longer necessary. This means that the new unit has a higher one Can deliver total power as a rapid readiness unit with the same drive machine power.

The hiring is shown in the drawing. The figure shows a Unit for a lighting system on airfields.

In the liormalbetrieb not shown consumers are from the alternating current network fed. In the event of a power failure, an automatically operating switching device switches the loads to an independent unit. This unit is on a base frame 2, a generator 1, a Diesel engine 3 and a flywheel 4 are arranged. The generator 1 is in the unit according to the innovation between the internal combustion engine 3 and Flywheel 4 arranged and with its two shaft ends via clutches 5, C with the internal combustion engine, which can also be released during operation 3 and the flywheel 4 connected. A constant voltage device 7 built on it is assigned to the generator 1. At

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. PLA. 67/1610

one side of the generator A is a junction box 8 with cables 9 electrically connected in parallel, which lead to the consumers.

The clutches 5 and 6 are conveniently as. Electrical couplings formed »with energized clutch 5> that is, with a force-fit connection The unit has the properties of flywheel 4 and generator 1 an emergency response system. Thereby the generator with its flywheel 4 started up by the internal combustion engine 3 and thereby kept in readiness that the flywheel and the Generator 1 by the engine 10 via the V-belt drive 11 or the like. is driven.

When clutch 5 is released - i.e. when flywheel 3 is uncoupled - and engaged clutch 6 is the unit as. usual emergency generator to disposal. "

1 figure

1 right to protection

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Claims (1)

RA.652 Si * 2 * 11/16/6? PIA 67/1610 Claim to protection. Aggregate for the power supply of brewers, which normally from an alternating current network and "if the alternating current network is disturbed by a generator which can be coupled to an internal combustion engine and whose shaft is coupled to a flywheel, characterized by that the generator (1) between the combustion engine (3) and flywheel (4) is arranged and with its two shaft ends is connected to the internal combustion engine (3) and the flywheel (4) via clutches (5, 6) which can also be released during operation. -6- '■ Hr / Stä