SE531676C2 - An energy supplying circuit arrangement with a DC / DC converter - Google Patents

Description

10 15 20 25 30 E31 675 voltage or reduced supply voltage, phenomena which are unfortunately not uncommon in energy supply AC networks.

Also within the scope of the invention is an application in such circuit arrangements which are adapted to charge one or more sets of coordinated batteries, where these batteries should be able to serve as a "back-up" function for an utilized energy-supplying DC network.

Circuit arrangements of this kind will have a plurality of set-related circuits, each of these circuits being adapted to a preselected one-mode DC network.

The invention also includes the possibility of having a plurality of parallel-related energy-supplying DC networks supplied, with or without voltage-retaining battery sets, where resp. DC networks can be assigned e.g. its assigned pole voltage, its assigned capacity and / or its assigned load current and / or load structure and consider the structure of the power supply DC network, such as DC networks with starter batteries for a vehicle, such as DC networks with low battery maintenance batteries custom circuit arrangements.

More specifically, a circuit arrangement, in accordance with the present invention, may be based on resp. circuit arrangement may be associated with an AC-supplied rectifier bridge, a connected sine pump unit (SP unit) and a DC / DC converter, which may also comprise a power and / or energy regulating circuit, with a current limiting circuit for maintaining power. and current values within and below maximum limits.

The present invention thus intends to utilize a so-called sine pump unit, hereinafter abbreviated to an SP unit.

By such an SP unit is meant primarily a circuit arrangement known in principle, where a waveform for the variation of the current in time is imaged against a voltage waveform and phase position, so that a supplying AC network can consider such a circuit arrangement and DC network as a pure resistive load. 10 15 20 25 30 531 E75 Considering the energy supply circuit arrangement, according to the present invention, it can be mentioned that the circuit arrangement intends to offer: A. a DC / DC converter, structured with few components, and B. an energy storage circuit related to the SP unit, where the present invention primarily relates to "B" above.

BACKGROUND OF THE INVENTION Methods, arrangements and constructions related to the above-mentioned technical field and the above-mentioned nature of such circuit arrangements with associated supply networks are previously known in a number of different embodiments for creating an energy-supplying DC network, where the DC supply circuits not only must be arranged to be able to create a constant DC voltage level via a DC / DC converter, independent of the instantaneous load, but also to be able to compensate for voltage variations, voltage drops in the form of "dips" or short voltage drops, in that power supply AC mains, with or without supporting battery sets.

An embodiment which will be considered as the closest prior art in this technical field is briefly shown and described in the following figure 1 and where a previously known supply or charging circuit is technically shown with a known DC / DC converter and a known SP unit fed by an energy supply AC network, where the utilization of an AC network is the most common and described in fi guren 2.

Figure 1 then briefly describes two or fl your parallel related energy-supplying DC networks, with associated energy- or power-supply circuit arrangements.

These two circuit arrangements are mutually adapted to be connected in parallel and fed in parallel by an AC network in order to be able to DC supply and charge a plurality of sets of coordinated energy supply DC networks, with or without batteries, and wherein said circuit arrangement has a plurality , illustrated here as two, set-related DC networks or power supply circuits or charging circuits, each 10 15 20 25 30 53% GWS one of these circuits is adapted to a pre-selected load structure and possibly selected battery set, with i.a. its assigned pole voltage, its assigned capacity and / or its assigned load current and where each of these supply or charge circuits consists of a physically separate unit, within which unit there is a circuit-supplied, AC-supplied rectifier bridge, a connected SP unit and a DC / DC converter, for lowering a DC level against the pole voltage of the energy supply DC network and preferably with a circuit limited to a maximized power or current.

A plurality of such physically separated circuits may be connected in parallel to one and the same AC supply, however, each of said circuit arrangements should advantageously have a known rectifier bridge with associated AC supply, preferably over a transformer. Figure 2 illustrates in more detail the connection technical construction of each of the circuit arrangements specified and separately supplied in Figure 1. Considering now the present invention, in the light of known circumstances, it can be mentioned that a supply AC network to a circuit arrangement, of here known construction, to allow the creation of an energy-supplying DC network, with a constant holding DC voltage, encounters different inconveniences depending on different circumstances.

A first challenge is that previously known circuit arrangements require a large number of components for their functions, e.g. in the form of program-controlled transistors, which are to create zero-passages for a generated DC current or a DC voltage, in order to be able to alternately be connected to a required transformer and connected rectifier units and those skilled in the art have a distinct need to create the same functions, however, with the hope of being able to utilize a smaller number of components.

A second challenge lies in being able to maintain a constant energy-supplying DC network to the receiver circuit with simple measures, even if the energy-supplying AC network was exposed to pronounced voltage drops (so-called dips), voltage increases and / or short-term interruptions. 10 15 20 25 30 534 6? DESCRIPTION OF THE PRESENT / PROVISIONAL TECHNICAL PROBLEM Considering the fact that the technical considerations that a person skilled in the relevant technical field must make in order to be able to offer a solution to one or more set technical problems are partly initial necessary insight into the measures and / or the sequence of measures to be taken and a necessary choice of the means or means required, the consequent technical problems should therefore be relevant in the creation of the present invention.

Taking into account the prior art, as described above, and as illustrated in more detail with reference to Figures 1 and 2, it should therefore be seen as a technical problem to be able to realize the significance of, the advantages associated with and / or the technical measures and considerations that will be required in order to be able to create an energy-supplying DC network from an energy supply network, an AC network or a DC network, where far-reaching measures have been taken to eliminate the above-mentioned challenges or inconveniences with a DC / DC conversion and / or a varying DC voltage within the energy supply DC network.

There is a technical problem in being able to realize the significance of, the advantages associated with and / or the technical measures and considerations that will be required to assign such coupling technical arrangements with controlled transistors that a required DC / DC converter can be structured with a few components in relation to known technology.

There is a technical problem in being able to realize the significance of, the benefits associated with and / or the technical measures and considerations that will be required to have coordinated, to an SP unit, one or more energy storage circuits, where the energy storage should be able to adapted to cover a power failure, such as up to 200 ms for the power supply AC network.

There is a technical problem in being able to realize the significance of, the benefits associated with and / or the technical measures and considerations that will be required to be able to far simplify the circuit for a DC / DC conversion in a combination. 30 531 B75 with energy compensation for short-term voltage dips and / or short-term voltage drops in the energy supply AC network.

There is a technical problem in being able to realize the significance of, the benefits associated with and / or the technical measures and considerations that will be required to allow each of the circuit arrangements to be adapted in order to be connected in parallel and constructively coordinated. to be able to supply separate and / or coordinated energy-supplying DC networks.

There is a technical problem in being able to realize the significance of, the benefits associated with and / or the technical measures and considerations that will be required to power a single DC network, and where said circuit arrangement will have an available positive pole, adapted for each of a plurality of DC networks and / or sets of coordinated batteries, and wherein said circuit arrangement may offer a common use of a system-grounded line, usually having negative potential.

There is a technical problem in being able to realize the significance of, the benefits associated with and / or the technical measures and considerations that will be required to allow resp. circuit arrangements may use an SP circuit, where this SP circuit shall be adapted to include means for storing electrical energy to such an extent that calculated and calculated occurring voltage dips, within the energy supply AC network, and also short voltage outages, may is compensated for immediately while maintaining a constant DC voltage for the energy supply DC network.

There is a technical problem in being able to realize the significance of, the benefits associated with and / or the technical measures and considerations that will be required for a line required for one circuit arrangement to be related to system ground and galvanic. interconnected with a line required for the second circuit arrangement, related to system earth, and thereby be able to create conditions for coordinating a number of such circuit arrangements, individually structured, in a single physical unit, with a common supply to all or to selected circuit arrangements and / or energy supply DC networks. There is a technical problem in being able to realize the significance of, the benefits associated with and / or the technical measures and considerations that will be required to allow said system earth to be directly connected to an AC-supplied rectifier bridge. , as such a bridge for each circuit arrangement.

There is a technical problem in being able to realize the significance of, the benefits associated with and / or the technical measures and considerations that will be required to allow said circuit arrangement to be fed from one and the same AC power supply, dimensioned to supply all of them. connectable circuit arrangements with their assigned and maximized loads.

There is a technical problem in being able to realize the significance of, the benefits associated with and / or the technical measures and considerations that will be required to allow each of, within a rectifier bridge for respective energy supply DC networks and / or charging circuit included, the rectifier units may be connected in parallel.

There is a technical problem in being able to realize the significance of, the benefits associated with and / or the technical measures and considerations that will be required to allow a capacitor included in an SP unit to be assigned a low capacitance value. and small volume and thus cheap to purchase, where the value of the capacitor is chosen to be in relation to calculated short-term voltage dips and / or short-term voltage outages.

There is a technical problem in being able to realize the significance of, the benefits associated with and / or the technical measures and considerations that will be required to control only one MOSFET transistor, so that the output power is regulated via a pulse width modulation of the fed the DC current within the DC network.

There is a technical problem in being able to realize the significance of, the benefits associated with and / or the technical measures and considerations that will be required to allow a custom DC / DC converter to include one, connected in series, from a computer. controlled, MOSFET transistor. 10 15 20 25 30 531 BYE There is a technical problem in being able to realize the significance of, the benefits associated with and / or the technical measures and considerations that will be required to allow a single MOSFET translator to be connected in series with an inductance , related to the power supply DC network.

SOLUTION The present invention is based on the initially known prior art regarding a power supply arrangement adapted for a parallel connection, where this circuit arrangement is adapted to be able to supply a plurality of energy-supplying DC networks in parallel, with time-varying effects. and optionally be able to charge one or a plurality of sets of one or more batteries, battery units and / or battery sets assigned to several coordinated DC networks according to the preamble of the patent claim.

In order to be able to solve one or more of the above-mentioned technical problems, the present invention specifically provides that the above-indicated known technique can be supplemented with the features stated in the characterizing part of claim 1.

ADVANTAGES The advantages which can mainly be considered as characteristic of the present invention and the special significant characteristics indicated thereby are that this has created conditions for an energy-supplying DC network and / or a battery-charging circuit arrangement, which is adaptable to to be able to charge a plurality of sets of coordinated energy supply DC networks and / or batteries in parallel, to allow a plurality of set-related circuits, each adapted to a preselected DC voltage, to be allowed to supply one or more coordinated DC networks and / or batteries, independently of each other, among others. a. in that a line required for one circuit must be related to system earth and galvanically connected to a line required for the other circuit, line related to system earth and so on. 10 15 20 25 30 531 EJE Furthermore, the invention provides a simplified wiring diagram for a non-mains insulating circuit arrangement, where e.g. a system isolating and isolating transformer unit has been discontinued.

In this case, system earth can be directly connected to an alternating current supply rectifier bridge.

The circuit arrangement of the present invention also makes it possible to create circuits for a DC / DC converter with a smaller number of components than prior art, as well as the invention does not require a transformer unit between a DC / DC converter and a rectifier bridge, to form or create the direct current rope required for the power supply DC network and / or the charge. the DC voltage.

A charging capacitor is adapted to equalize voltage dips or voltage drop for a supply voltage.

What can primarily be considered as characteristic of the present invention is stated in the characterizing part of the appended claim 1.

BRIEF DESCRIPTION OF THE DRAWINGS A prior art energy supply DC network and a presently proposed embodiment, having the significant features associated with the present invention, will now be further described, by way of example, with reference to the accompanying drawings, in which; Figure 1 shows a simplified wiring diagram of a known energy supply DC network with a power supply and / or battery charging circuit arrangement, where the individual units are adapted to be able to supply a plurality of sets of coordinated energy supply DC networks in parallel, by means of a number of set-up relays. Figure 2 shows in circuit diagram form a previously known power supply circuit, included in each of the two units, illustrated within the embodiment shown in Figure 1, Figure 3 shows a simplified circuit and unit internal complete circuits, 10 15 20 25 30 531 B75. wiring diagram of a plurality of energy supply DC networks with an energy supply circuit arrangement, in accordance with the present invention, and wherein the individual units are adapted to be able to supply a plurality of sets of coordinated energy supply DC networks in parallel, with a coordination of associated set-up related circuits , Figure 4 shows a detailed wiring diagram of an energy supply circuit, showing the characteristics characteristic of the present invention and Figure 5 shows a circuit diagram with an increased capacity for an energy storage within an SP unit.

DESCRIPTION OF PRIOR ART.

With reference to Figure 1, there is thus illustrated a circuit arrangement for supplying power to one or more energy-supplying DC networks, where resp. DC mains can be voltage supported by a battery set.

Here, the use of two units 2, 2 'adapted to be able to supply power to each DC network "A" or "B" in parallel and charge a plurality of sets of coordinated batteries, where a first group has been assigned the reference designation "A" while a second group has been assigned the reference designation where resp. group are each part of their own energy-supplying DC network (DC). A third unit 2 "is also shown.

Said circuit arrangement has a plurality of set-related supply and / or charge circuits (2a), (2a '), each related to its unit 2, 2'.

Each of these charging circuits (2a), (2a ') is directly adapted to a preselected DC network and thus a selected battery set "A" or 10 15 20 25 30 53 "! B75 11 Each of The DC networks, with their assigned battery sets "A" and are, among other things, assigned to their pole voltage, their assigned capacity and / or adapted to their assigned load current and expected time distribution, and thus different criteria will be required for the circuit (2a) and the circuit. (2a ') if the battery set “A” and “B” and the DC networks have been assigned completely different criteria or conditions.

A previously known supply or charging circuit is shown in more detail and described in Figure 2, and where a charging circuit 2a is identical to the charging circuit (2a) or (2a '), however, the constituent components have been assigned different values in order to thereby correspond to selected criteria for the selected battery sets "A" HB !! - l simplifying purpose, the circuit arrangement 2a shown in figure 2 will therefore be related to the circuit (2a), however with the knowledge that the same circuit structure can be applied to the circuit (2a ') .

The charging circuit 2a, according to Figure 2, then has an AC-supplied rectifier bridge 21, which is supplied by an alternating current related to earth potential 28, and with a number of four cross-connected rectifier units, two of which are assigned the reference numerals 21a, 21b.

Figure 2 further illustrates a connected SP unit 22, as well as a DC / DC converter 23 with four transistors 23a with a circuit limited to a maximized current, where the current is controllable via a pulse width modulation.

Figure 2 further illustrates the connection of a transformer 24, connected to a further rectifier bridge 25 to form a direct voltage to an energy supplying DC network, whose negative pole 26 is grounded 29 and whose positive pole 27 is intended to supply its DC network ". A "(DC) and its set of one or more coordinated batteries, (not shown) with 54VDC. 10 15 20 25 30 531 675 DESCRIPTION OF THE PROPOSED PRESENTATION It will then be pointed out at the outset that the following description of a presently proposed embodiment, which exhibits the significant features associated with the invention and which is apparent from the following the drawings showed the figures, we have had terms and a special terminology chosen in order to clarify the idea of the invention in the first place.

In this context, however, it should be borne in mind that the terms chosen here should not be construed as limiting only the terms used and chosen here, but it should be understood that each term thus chosen should be interpreted so as to include all technical equivalents that operate on the same or essentially the same way in order to be able to achieve the same or substantially consistent intention and / or technical effect.

With reference to the appended figures 3, 4 and 5, the basic preconditions for the present invention and where the significant peculiarities associated with the invention are thus schematically and in detail are thus concretized, through the now proposed and subsequently described in more detail embodiment.

Thus, Figure 3 illustrates, like Figure 1, the principal parallel interconnection of a number of circuit arrangements 2, 2 ', 2 "and / or charging circuits 30,302 30", in accordance with the present invention.

The circuit arrangement 2, as well as the other parallel-connected circuit arrangements 2 'and 2', may be different, however, the basic structure with different components will be the same.

Thus, Figure 3 illustrates, for the first arrangement 2 and with a first circuit 30, a first AC-supplied AC / DC rectifier bridge 3a, a downstream SP unit 3b and a DC / DC converter 3c, which are shown as units connected to each other in series.

According to the invention, there is now provided the possibility of utilizing a second circuit arrangement 2 'with a second circuit 302 also assigned to an AC-supplied rectifier bridge 3a', a reconnected SP unit 3b 'and a DC / DC -converter 3c ', which as units are shown connected to each other in series.

Figures 3 and 4 illustrate the use of an energy supply network, designated "Nin", and this network may be an AC network 31 (or a DC network, connected instead of the rectifier units 21a).

Figures 3 and 4 also illustrate the use of an energy supply network "Nout", which consists of a DC network "A" (DC), with a voltage of 35OVDC. In accordance with the present invention, it is illustrated that an alternating current 31 from an energy supply AC network "AC" is supplied to the circuit arrangements 2, 22 'and 2 "and from Figure 3 it can be seen that an alternating current conductor 32' is connected in parallel to the units 1 of rectifier bridges 3a, 3a ', 3a ", etc. for each of the set-up circuits 30, 30', 30 '.

Figure 3 further illustrates, with a conductor 33 and a conductor 33a, that all the rectifier bridges or charging units 3a, 3a 'and 3a "are connected to each other and connected to a conductor 34, constituting system ground (potential), which has assigned the reference number 35.

According to the invention, it is now indicated that a line 34 required for one circuit 30, with the units 3a, 3b, 3c, related to system ground 35, is galvanically connected to one for the other circuit 30 ', with the units 3al', 3b '. and 3c ', required line 34a, also related to system ground 35.

According to the invention, said system earth (35) can also be electrically connected to the AC-supplied rectifier bridges or units 3a, 3a ', which connection is also clarified in Figure 4.

In accordance with the present invention it is provided that all of said circuit arrangements 2, 2 'and 2 "with their circuits shall be supplied from one and the same alternating current supply 31 and thereby all circuits 2, 2' and 2", with their 1.5 1.5 6 30 531 6? 6 AC-fed rectifier bridges 3a, 3a ', 3a', to be necessarily connected at the same time.

Figures 3 and 4 also indicate that each of, in the rectifier bridges or units 3a, 3a 'for resp. circuit 30, 30 * included, the rectifier units are connected in parallel.

In order to be able to supply an energy supply to the energy supply DC network "A" (DC), during which time periods a voltage reduction and / or a voltage interruption occurs in the energy supply AC network 31, an energy storage of at least the energy required by a maximum load energy supply DC network "A" (DC) requires under deSSa | <0ffa time conditions.

It is then known to use various means to fulfill the requirement that an energy-supplying DC power station must be able to generate a constant voltage to its consumer circuit or its customers.

An energy supply DC network "A" (DC) with an energy supply constant DC voltage is also important in any voltage supply of sensitive equipment, such as computers, robot controllers and the like and any parallel charging of batteries, if you want to protect yourself from shortages energy supply during longer power outages.

Voltage dips within an energy supply AC network 31 can e.g. reduce the energy supply voltage values down to half the peak voltage and for a time duration of e.g. 10 ms.

The invention offers a mains insulating, sine-pumping, constant voltage regulating and parallel-connectable, circuit arrangement 2, 2 ", 2", which is capable of being included in an energy-supplying DC mains station for e.g. public electricity distribution of direct current.

Voltage dips and very short interruptions in the mains supply 31 have proved to be very disturbing for e.g. offices and process industries with modern electronic installations. 10 15 20 25 30 531 BYE Practical experience suggests that voltage dips and short interruptions occur relatively often, while longer interruptions occur infrequently.

Thus, it is highly desirable to be able to supply a constant DC voltage (Nout) and bridge the effect of voltage dips within the AC power distribution 31.

For financial reasons, it has proved interesting to be able to build DC network stations without battery sets, but still be able to offer certain bridging times for e.g. short-term voltage dips.

It is obvious to a person skilled in the art that an adapted capacitor in many applications offers a much cheaper solution than having batteries used for this special energy supply need.

There is a prominent need among those skilled in the art to have a circuit arrangement 2, 2 ', 2 "constructed which is universally useful within an energy supply DC power station and which should be able to be connected in parallel to larger or smaller distribution systems and, if necessary within the system, charge batteries .

The circuit arrangements 2, 2 ', 2 "must then be controllable under a constant DC voltage up to a maximum current and power and protected against an overload.

A capacitor 40 included in the SP unit 3b can be assigned a low capacitance value, in order thereby to be able to create conditions for a lower induction or charging current and a small volume size. However, this dimensioning requires a DC network with a connected battery set as a back-up function.

For DC networks without a battery set, significantly larger (and more according to Figure 5) capacitors with an adapted higher capacitance value or capacitance values and then also with larger volumes are required.

In accordance with the present invention, it is now directed that the capacitance value of said capacitance 40 should be specially adapted. 10 15 20 25 30 The capacitance value of the capacitor 40 must in this application, according to figure 4, be chosen high and thus conditions are created for a higher charging current and the energy storage will be higher.

If the value is chosen even higher, conditions are created for an even higher charging current and a higher adapted energy storage.

Furthermore, the present invention indicates that the energy storage should be so high that the energy supply DC network "A" (DC) provides a constant voltage even at voltage dips in the supply AC network 31 for a calculated time.

The selected energy storage in the capacitor 40 thus becomes critical to the invention. On the one hand, a higher energy storage provides conditions for being able to accept deeper and longer voltage dips in time within the energy supply AC network "Nin" without varying the DC network's "Nout" DC voltage. On the other hand, a lower energy storage provides the conditions for only being able to accept smaller and temporally shorter voltage dips within the energy supply AC network "Nin" in order not to vary the DC network's "Nout" DC voltage.

Furthermore, the value of the capacitor 40 affects the ripple generated from the rectified AC voltage 31.

A MOSFET transistor 50 within the SP unit 3b is controlled for a pulse width modulation, via a circuit 51 of a structure known per se and with the transistor 50 connected between an inductor 46 and a diode 45.

The SP unit 3b emits a DC voltage of 420VDC, with a ripple of the order of 100 kHz.

This DC voltage is lowered to 350VDC in a DClDC converter 3c. In accordance with the present invention according to Figure 4, the DC / DC converter 41 (3c in Figure 3, 23 in Figure 2) should comprise a series connection of one, controlled by a computer, via a line 42, MOSFET transistor 43, in order thereby to create a current limitation selected for the supplied DC current. Between the wires 34 and 36 a diode 46 is connected.

Furthermore, the embodiment shows, according to Figure 4, that a single MOSFET transistor 43 is connected in series with an inductor 44, and that a capacitor 47 is connected between the poles of the DC network "A (DC)".

When comparing the embodiment in Figure 2 with the embodiment in Figure 4, it is clear that the two previously required earthing points 28, 29 in Figure 2 must, according to the embodiment shown in Figure 4, be supplemented so that earthing point 28 is deleted while earthing point 29 is required as a ground, here assigned the reference numeral 35.

Furthermore, a comparison between the wiring diagram in Figure 2 and the wiring diagram in Figure 4 shows that the transformer 24 together with the rectifier bridge 25 has been eliminated together with a number of four computer-controlled MOSFET transistors 23a, included in the DC / DC converter 23.

It is further indicated that when the SP unit 3b is to have an increased capacity, e.g. in systems without batteries, to supply a constant DC voltage and power during voltage dips or very short power outages, the capacitors 40 included in Figure 4 can be assigned a higher voltage and a higher capacitance value, in order to be able to bridge reasonable voltage dips for capacitors or much short network outages 31.

An SP unit 3b with associated circuit arrangement 2 always tries to generate a constant output voltage. At voltage dips and decreasing input voltage 31 (Nin), it follows the voltage down and strives to eliminate the voltage dips. Depending on the dimensioning and load drop, the arrangement 2 can, due to its dynamics, eliminate almost all voltage dips in the electricity distribution system 31, however, falling within a selected time duration. The invention does not require any special insulation since an AC-supplied transformer 37 creates such a required insulation.

The simple rectifier used also does not require any safety classification and thus reduces costs while reducing the number of components.

According to the invention, according to Fig. 4, said capacitor 40 should be assigned a capacitance value and a voltage where the energy content (half the capacitance value multiplied by the square of the voltage) is adapted to be able to fully compensate for the DC network "A" DC; (Nout) energy needs for a predetermined time.

This time does not normally need to exceed 200ms, but should probably exceed 50-100ms.

In particular, the invention indicates that measures should be taken to operate with a high voltage across the capacitor 40, as the energy content is dependent on the voltage squared.

Figure 5 illustrates the connection of a further energy storage circuit arrangement, with a capacitor 40a and a diode D3, where it is a question of expanding the energy storage.

Furthermore, Figure 5 indicates a line 5a, which can serve as a supply of an external additional energy storage via a circuit arrangement 15, in that the line 5a can be connected to a back-up battery (not shown) with an energy content large enough to compensate for a greater energy loss than the above.

A capacitor 40a, a battery or a separate DC network can thus be connected to the line 5a.

The line Sa enables the SP unit 3b itself to be retained at a low installation volume and that additional energy requirements can be placed outside the SP unit in a circular manner. 10 15 531 675 This can provide space for smaller components within the SP unit 3b and external space for energy supply units.

If necessary, a simple upgrade of the circuit arrangement template 2 via an independent circuit arrangement of the SP unit 3b is offered, where a temporary voltage drop 31 for the energy supply AC network can be accepted far beyond the time interval of 200ms, stated above.

The invention is of course not limited to the embodiment given above as an example, but may undergo modifications within the scope of the inventive concept illustrated in the appended claims.

Special consideration should be given to the fact that each displayed unit and / or circuit can be combined with any other displayed unit and / or circuit within the framework in order to be able to achieve the desired technical function.

Claims (6)

10 15 20 25 30 35 531 B76 20 PA TENTKRÅ V A power supply circuit arrangement (2) adapted for a parallel connection, with one to resp. circuit arrangement (2) connected to a current and voltage supply circuit (31; (Nin)) and wherein said arrangement (2) comprises an alternating current rectifier bridge (Sa), a connected sine pump unit or SP unit (3b) and a DC / DC converter ( 3c). the latter adapted to be able to supply an energy-supplying DC network (Nout) assigned to the circuit arrangement (2), where the circuit arrangement (2) and the connected current and voltage supply circuit (Nin) are adapted to a preselected load. , that the DC / DC converter (3c) is adapted to comprise a controlled transistor (42, 43), a diode (45), and a capacitor (40) and an inductor (44) connected to the transistor (43), characterized in that for each utilized circuit arrangement (2, 2 ') with utilized circuits (30, 30'), a diode (21c) connected to the rectifier bridge (3a, 3a ') is a line (34c). , 34a) adapted to galvanically directly connect a series-oriented SP unit (3b), a DC / DC converter (3c) and said load, that a capacitor (40) included in the SP unit (3b) is dimensioned for a high energy content, where the energy content is chosen large enough to be able to compensate for short voltage dips and / or short-term voltage loss in terms of energy ll, occurring within the current and voltage supply AC circuit (Nin) and for a constant maintenance of a mains-related energy-supplying DC voltage (Nout), that the energy stored in the capacitor (40) is also adapted to a maximum loaded energy-supplying DC -net (Nout), that one, for a first circuit arrangement (2; 3a, 3b, 3c) required, first line (34, 35) is related to system ground (35) and galvanically connected to a second line (34a) required for a second circuit arrangement (2 ') related to system ground (35). ), that said system ground (35) is directly connected to the AC-fed rectifier bridge (3a) and that parallel-connected rectifier bridges (3a, 3a ') are fed by a common secondary winding of a transformer (37). lO 15 20 53 '| G76 Arrangement according to claim 1, characterized in that said capacitors (40) are each assigned a capacitance value corresponding to an energy content which can compensate for the energy needs of their DC network (Nout), such as for a period of up to 200 ms, such as 50 - 100 ms. Arrangement according to Claim 1 or 2, characterized in that the DC / DC converter has a transistor which is adapted for a pulse width modulation of a DC current. Arrangement according to claim 1, characterized in that each of, within a rectifier bridge (3a, 3a ') for resp. circuit arrangement (2, 2 ') included, the rectifier units (Sa, 3a') are dimensioned to each other to be parallel-connectable. A power supply circuit arrangement according to any one of the preceding claims, characterized in that a DC / DC converter (3c) used for each circuit arrangement is adapted to comprise a MOSFET transistor connected in series, controlled by a computer unit (42). (43). Arrangement according to Claim 5, characterized in that a single MOSFET transistor (43) is directly connected in series with an inductor (44).