Apparatus for supplying electrical energy to a load
First Claim
1. Apparatus for supply pulsed, or alternating electrical energy of a desired predetermined, wave shape to a load (6) comprisingenergy supply means (1, 2, 36) which includesa main energy supply device (1),an auxiliary energy supply device (2);
- an output conductor portion (36) connected to said energy supply devices (1,
2) and to the load (6),said main energy supply device (1) supplying energy to said output conductor portion (36) to supply energy to the load under normal condition;
said auxiliary energy supply device (2) supplying energy to said output conductor portion to supply energy to the load during interruption of the main energy supply respectively;
and means correcting for departures from, or distortion of the wave shape from said desired predetermined wave shape includingenergy exchange and storage means (4) connected to the main energy supply device (1) to receive and store energy from said main supply device (1) and to make such stored energy instantantaneously available to said load for bridging brief disturbances in the supply of energy to the load from said energy supply means resulting in departure from or distortion of the wave shape with respect to the said desired wave shape;
and control means (5) which are connected to said energy exchange and storage means (4) comprisingreference means (504) generating a reference signal having a characteristic representative of the desired wave shape of energy to be supplied to said load (6);
actual energy supply monitoring means including an output voltage monitor (502) and an output current monitor (503) evaluating the instantaneous levels of energy being supplied to the load;
comparator means (502) connected to said energy supply monitoring means and comparing the instantaneous level of the half wave current level and the flow direction of the energy actually supplied to the load and the instantaneous level of said reference signal,and control logic means (501) connected to said comparator means (502) and controlling said energy exchange and storage means (4) in dependence on the instantaneous energy level and the flow direction of said supplied energy to instantaneously supply energy stored from said energy exchange and storage means to the output conductor portion (36) and hence the load (6).
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Abstract
A main and an auxiliary energy supply device supply energy to a load normally and during disturbances of the main supply respectively while, for bridging brief disturbances in the load supply, for example naturally brief disturbances or during the short time when a disturbance has begun and the auxiliary supply has not yet come into operation, there is provided an energy store which can receive and store energy from the main supply and make this stored energy quickly available to the load. A control logic system controls the main and auxiliary supply devices and the storage means to ensure substantially constant energy supply to the load. The disturbances in question may comprise voltage rises or reductions and/or waveform distortions for example.
42 Citations
10 Claims
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1. Apparatus for supply pulsed, or alternating electrical energy of a desired predetermined, wave shape to a load (6) comprising
energy supply means (1, 2, 36) which includes a main energy supply device (1), an auxiliary energy supply device (2); -
an output conductor portion (36) connected to said energy supply devices (1,
2) and to the load (6),said main energy supply device (1) supplying energy to said output conductor portion (36) to supply energy to the load under normal condition; said auxiliary energy supply device (2) supplying energy to said output conductor portion to supply energy to the load during interruption of the main energy supply respectively; and means correcting for departures from, or distortion of the wave shape from said desired predetermined wave shape including energy exchange and storage means (4) connected to the main energy supply device (1) to receive and store energy from said main supply device (1) and to make such stored energy instantantaneously available to said load for bridging brief disturbances in the supply of energy to the load from said energy supply means resulting in departure from or distortion of the wave shape with respect to the said desired wave shape; and control means (5) which are connected to said energy exchange and storage means (4) comprising reference means (504) generating a reference signal having a characteristic representative of the desired wave shape of energy to be supplied to said load (6); actual energy supply monitoring means including an output voltage monitor (502) and an output current monitor (503) evaluating the instantaneous levels of energy being supplied to the load; comparator means (502) connected to said energy supply monitoring means and comparing the instantaneous level of the half wave current level and the flow direction of the energy actually supplied to the load and the instantaneous level of said reference signal, and control logic means (501) connected to said comparator means (502) and controlling said energy exchange and storage means (4) in dependence on the instantaneous energy level and the flow direction of said supplied energy to instantaneously supply energy stored from said energy exchange and storage means to the output conductor portion (36) and hence the load (6). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification