CN105703470A - Multiple-power power supply system and method for multi-power power supply system - Google Patents
Multiple-power power supply system and method for multi-power power supply system Download PDFInfo
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- CN105703470A CN105703470A CN201410710520.1A CN201410710520A CN105703470A CN 105703470 A CN105703470 A CN 105703470A CN 201410710520 A CN201410710520 A CN 201410710520A CN 105703470 A CN105703470 A CN 105703470A
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Abstract
The invention provides a multiple-power power supply system and a method for the multi-power power supply system. The multiple-power power supply system comprises a first power supply, a second power supply, an input switch device for switching between the first power supply and the second power supply, a power conversion multiplexing circuit for switching the power from the first power supply or the power from the second power supply according to the switching of the input switch device, and an inverter which is used for converting the power outputted by the power conversion multiplexing circuit to output, wherein the input switch device is a mechanical switch device. According to the embodiment of the invention, the cost and volume of the multi-power power supply system can be reduced, and the power efficiency and power density are improved.
Description
Technical field
It relates to electric and electronic technical field, more particularly, to a kind of power conversion circuit being capable of for multiple power supplys multiplexing multi-power supply system and for the method for this multi-power supply system。
Background technology
At traditional multi-power supply system (such as, uninterrupted power source (UPS), converter etc.) topological structure in, for UPS, as shown in Figure 1, generally include the separate rectification circuit for alternating current power supply (that is, civil power) and the discharge circuit for battery。But, due in this topological structure rectification circuit and discharge circuit can not multiplexing, therefore traditional UPS is generally of that volume is big, devices use rate is low, cost is high, be unfavorable for the shortcoming that improves power density etc.。
For this problem, it is proposed that a kind of circuit topological structure being capable of rectification circuit and the multiplexing of discharge circuit, to reduce cost and the volume of such as UPS。As in figure 2 it is shown, in this schematic circuit diagram, alternating current power supply and a set of pfc circuit of battery sharing are for rectification circuit and discharge circuit, i.e. achieve the multiplexing of rectification circuit and discharge circuit。In this circuit topological structure, generally adopt IGCT (SCR) as the input switch device being used for switching alternating current power supply and battery。But, the shortcoming of such circuit topological structure is in that, (1) adopting SCR to have the disadvantages that SCR can flow continuously through big electric current in the process that complete machine works as input switch device, power consumption is relatively big, can badly influence the overall efficiency of electric power system；The power consumption of SCR is bigger, it is therefore desirable to the radiator that volume is bigger, and this is an inferior position for the high power density requirement of current product；And SCR's is relatively costly, especially also need to add radiator, thus causing that the holistic cost of product is higher, and inductance quantity that (2) adopt is many, and single inductance not all time is all in work, therefore the utilization rate of inductance is low, and causes that such UPS complete machine takes up room big and cost is high。
Summary of the invention
The brief overview about the disclosure given below, in order to the basic comprehension in some of the disclosure is provided。It is understood, however, that this general introduction is not that the exhaustive about the disclosure is summarized。It is not intended to the critical component for determining the disclosure or pith, neither be intended to limit the scope of the present disclosure。It is only intended to and provides some concept about the disclosure in simplified form, in this, as preamble in greater detail given later。
In view of problem above, the purpose of the disclosure is to provide a kind of multi-power supply system using mechanical switching device as input switch device and the multiplexing being capable of multiple power conversion circuit, which overcome defect of the prior art, it is achieved that the raising of the reduction of cost and volume and work efficiency and power density。
One side according to the disclosure, it is provided that a kind of multi-power supply system, it comprises the steps that the first power supply；Second source；Input switch device, for switching between the first power supply and second source；Electric power conversion multiplex circuit, changes the electric power from the first power supply or the electric power from second source for the switching according to input switch device；And inverter, for the electric power changing multiplex circuit output from electric power is changed with output。Preferably, input switch device is mechanical switching device。
According to preferred embodiment of the present disclosure, above-mentioned mechanical switching device can be relay or catalyst。
According to preferred embodiment of the present disclosure, this multi-power supply system can be uninterrupted power source, and the first power supply can be alternating current power supply, and second source can be battery。Moreover it is preferred that the electric power from the first power supply is carried out rectification or the electric power of described second source is discharged by electric power conversion multiplex circuit。
Another preferred embodiment according to the disclosure, this multi-power supply system may also include the inducer being arranged between input switch device and electric power conversion multiplex circuit, and when input switch device connects the first power supply, if the first power supply is alternating current power supply, then the electric current flowing through inducer is full-wave electric current。
Another preferred embodiment according to the disclosure, the neutral point of the tap and bus of taking from the second source as battery is connected。
According to another aspect of the present disclosure, additionally provide a kind of method for multi-power supply system, this multi-power supply system can include the first power supply, second source, input switch device, electric power conversion multiplex circuit and inverter, and the method comprises the steps that control input switch device switches between the first power supply and second source；Electric power from the first power supply or the electric power from second source are changed by the switching control electric power conversion multiplex circuit according to input switch device；And control inverter to from electric power change multiplex circuit output electric power change with output。Preferably, input switch device is mechanical switching device。
Description below part provides other aspects of disclosure embodiment, wherein, describes the preferred embodiment for disclosing disclosure embodiment fully in detail, and do not apply to limit to it。
Accompanying drawing explanation
The disclosure by with reference to being better understood below in association with the detailed description given by accompanying drawing, wherein can employ same or analogous accompanying drawing labelling to represent same or like parts in all of the figs。Described accompanying drawing comprises in this manual together with detailed description below and forms a part for description, is used for being further illustrated by preferred embodiment of the present disclosure and explaining the principle and advantage of the disclosure。Wherein:
Fig. 1 is the schematic diagram of the example of the topological structure illustrating tradition UPS of the prior art；
Fig. 2 is the schematic circuit diagram of another example of the circuit topological structure illustrating tradition UPS of the prior art；
Fig. 3 is the schematic diagram illustrating the topological structure according to the multi-power supply system that embodiment of the disclosure；
Fig. 4 A to Fig. 4 H is the schematic circuit diagram illustrating the example embodiment according to the multi-power supply system that embodiment of the disclosure；
Fig. 5 is the schematic circuit diagram of the example embodiment illustrating multi-power supply system when inputting according to the three-phase alternating current based on the embodiment in Fig. 4 B that embodiment of the disclosure；And
Fig. 6 illustrates the schematic flow diagram according to the method for multi-power supply system that embodiment of the disclosure。
Detailed description of the invention
It is described hereinafter in connection with accompanying drawing one exemplary embodiment of this disclosure。For clarity and conciseness, all features of actual embodiment are not described in the description。But, it should be recognized that, the process developing any this practical embodiments must be made a lot of decision specific to embodiment, to realize the objectives of developer, such as, meet those restrictive conditions relevant to system and business, and these restrictive conditions may change along with the difference of embodiment。Additionally, it also should be appreciated that, although development is likely to be extremely complex and time-consuming, but for having benefited from those skilled in the art of present disclosure, this development is only routine task。
At this, also need to illustrate be a bit, in order to avoid having obscured the disclosure because of unnecessary details, illustrate only in the accompanying drawings and the closely-related device structure of the scheme according to the disclosure and/or process step, and eliminate other details little with disclosure relation。
Preferred embodiment of the present disclosure is described in detail hereinafter with reference to Fig. 3 to Fig. 6。
As it is shown on figure 3, can include the first power supply 301, second source 302, input switch device S, electric power conversion multiplex circuit 303 and inverter 304 according to the multi-power supply system 300 that embodiment of the disclosure, wherein, input switch device S is mechanical switching device。
Preferably, mechanical switching device here can include but not limited to relay and catalyst, and can be any can the adhesive or disconnect the switching device to switch on or off circuit according to the control of the signal of telecommunication。
Further, it is noted that the way of realization of input switch device S can include such as single many-contact relay, two single contact relays etc., this is not limited as by the disclosure, as long as it can realize the switching to the first power supply and second source。
Input switch device S switches between the first power supply 301 and second source 302, so that the electric power from the first power supply 301 or the electric power from second source 302 to export electric power conversion multiplex circuit 303。Electric power from the first power supply 301 or the electric power from second source 302 are changed by electric power conversion multiplex circuit 303。The electric power changing multiplex circuit 304 output from electric power is changed with output by inverter 304。Here electric power conversion multiplex circuit 303 can adopt PFC (PFC) circuit。
Preferably, this multi-power supply system 300 can be uninterrupted power source (UPS), first power supply 301 can be the alternating current power supply as civil power, second source 302 can be battery, and electric power conversion multiplex circuit 303 achieves the commutator for alternating current power supply and the multiplexing of the discharger for battery, and the electric power from alternating current power supply is carried out rectification according to the switching of input switch device S or the electric power from battery is discharged by it。
But, it should be understood that, multi-power supply system according to embodiment of the disclosure is not limited to UPS, but the converter etc. for air-conditioning can also be included, and the first power supply and second source are also not limited to be alternating current power supply and battery respectively, electric power conversion multiplex circuit is also not limited to realize the multiplexing of commutator and discharger。It is to say, include multiple power supply any and need to realize the power system of the multiplexing of multiple power conversion circuit, embodiment of the disclosure and all can be suitable for。
Moreover it is preferred that as it is shown on figure 3, multi-power supply system 300 can also include arranging the inducer L between input switch device S and electric power conversion multiplex circuit 303。
When input switch device S connects the first power supply 301, if the first power supply 301 is alternating current power supply, then the electric current then flowing through inducer L is full-wave electric current。By contrast, adopting in the SCR circuit topology as input switch device shown in Fig. 2, the electric current flowing through inducer is half-wave current。Therefore, with adopt SCR as compared with input switch device, according in the circuit topological structure that embodiment of the disclosure, owing to improve working time of inductance (namely, improve inductance utilization rate), such that it is able to utilize small number of inducer (for example, it is possible to reducing the inducer of half quantity), so not only reduce further cost, but also reduce the overall volume of system。
Fig. 4 A to Fig. 4 H is the schematic circuit diagram illustrating the example embodiment according to the multi-power supply system that embodiment of the disclosure, and Fig. 5 illustrates the schematic circuit diagram according to the example embodiment based on the multi-power supply system under the three-phase input condition of the embodiment in Fig. 4 B that embodiment of the disclosure。As shown in Fig. 4 A to Fig. 5, when single-phase or heterogeneous input, using relay as the input switch device of alternating current power supply and battery, rectification circuit and discharge circuit share a set of power conversion circuit, and are only provided with a such as inducer between the input switch device and electric power conversion multiplex circuit of every phase。
Moreover it is preferred that shown in example embodiment in Fig. 4 E to Fig. 4 H, the neutral point of the tap and bus of taking from battery is connected, and in other words, adds battery neutral point。So, positive and negative busbar can be all charged by battery, decreases the interference that system is caused by laod unbalance, improves the stability of system work。
Can be seen that according to the description above by reference to Fig. 3 to Fig. 5, according in the multi-power supply system that embodiment of the disclosure, compared to the topological structure of the traditional UPS shown in Fig. 1, rectification circuit shares circuit kit with discharge circuit, thus reducing volume and the cost of electric power system。On the other hand, compared to the UPS topological structure achieving rectification circuit and the multiplexing of discharge circuit shown in Fig. 2, owing to replacing IGCT as input switch device with the mechanical switching device of such as relay, therefore cost is reduced, reduce conduction loss, improve efficiency, inductance utilization rate can also be improved simultaneously, thus decreasing the quantity of the inducer used, further reduce cost and volume。
It should be understood that, although describing the topological structure example according to the multi-power supply system that embodiment of the disclosure above by reference to Fig. 3 to Fig. 5, but this is only exemplary rather than restriction, and art technology can make the embodiment being different from disclosed circuit topological structure according to the principle of the disclosure, and such embodiment is it is believed that fall in the scope of the present disclosure。
Describe according to the method for multi-power supply system that embodiment of the disclosure referring next to Fig. 6。Fig. 6 illustrates the flow chart according to the method for multi-power supply system that embodiment of the disclosure。
As shown in Figure 6, in step S1 place, control to switch between the first power supply 301 and second source 302 as the input switch device S of mechanical switching device。Here multi-power supply system can be UPS, and the first power supply can be alternating current power supply, and second source can be battery。Preferably, mechanical switching device can be relay or catalyst etc.。
In step S2 place, change multiplex circuit 303 according to the switching control electric power of input switch device S and the electric power from the first power supply 301 or the electric power from second source 302 are changed。Preferably, control electric power conversion multiplex circuit 303 electric power from alternating current power supply carries out rectification or the electric power from battery is discharged。
Then, in step S3 place, control the inverter 304 electric power to changing multiplex circuit 303 output from electric power and change with output。
It should be noted that, although the foregoing describing the process example according to the method that embodiment of the disclosure, but this is only exemplary rather than restriction, and above example can be modified by those skilled in the art according to the principle of the disclosure, such as the step in each embodiment can be added, delete or combination etc., and such amendment each falls within the scope of the present disclosure。
It is furthermore to be noted that, embodiment of the method here is corresponding with said apparatus embodiment, and the content not therefore being described in detail in embodiment of the method can, referring to the description of relevant position in device embodiment, be not repeated at this to describe。
It should be understood that, can be configured to perform the method corresponding with said apparatus embodiment with the executable instruction of the machine in program product according to the storage medium that embodiment of the disclosure, therefore it is referred to the description of previous relevant position in this content not being described in detail, is not repeated at this to be described。
Correspondingly, the storage medium for carrying the above-mentioned program product including the executable instruction of machine is also included within the disclosure。This storage medium includes but not limited to floppy disk, CD, magneto-optic disk, storage card, memory stick etc.。
It addition, should also be noted that above-mentioned series of processes and device can also pass through software and/or firmware realizes。When being realized by software and/or firmware, installing, to the computer with specialized hardware structure, the program constituting this software from storage medium or network, this computer is when being provided with various program, it is possible to perform various function etc.。
Describe preferred embodiment of the present disclosure above by reference to accompanying drawing, but the disclosure is certainly not limited to above example。Those skilled in the art can obtain various changes and modifications within the scope of the appended claims, and it should be understood that these change and amendment nature will fall in scope of the presently disclosed technology。
Such as, include multiple functions in a unit in the embodiment above to be realized by device separately。As an alternative, the multiple functions realized by multiple unit in the embodiment above can be realized by device separately respectively。It addition, one of function above can be realized by multiple unit。Needless to say, such configuration includes in scope of the presently disclosed technology。
In this specification, the step described in flow chart not only includes the process performed in temporal sequence with described order, and includes concurrently or individually rather than the process that must perform in temporal sequence。Additionally, even in the step processed in temporal sequence, it is not necessary to say, it is also possible to suitably change this order。
Claims (10)
1. a multi-power supply system, including:
First power supply；
Second source；
Input switch device, for switching between described first power supply and described second source；
Electric power conversion multiplex circuit, changes the electric power from described first power supply or the electric power from described second source for the switching according to described input switch device；And
Inverter, for the electric power changing multiplex circuit output from described electric power is changed with output,
Wherein, described input switch device is mechanical switching device。
2. multi-power supply system according to claim 1, wherein, described mechanical switching device is relay or catalyst。
3. multi-power supply system according to claim 1 and 2, wherein, described multi-power supply system is uninterrupted power source, and described first power supply is alternating current power supply, and described second source is battery,
And wherein, the electric power from described first power supply is carried out rectification or the electric power from described second source is discharged by described electric power conversion multiplex circuit。
4. multi-power supply system according to claim 1 and 2, wherein, described multi-power supply system also includes the inducer being arranged between described input switch device and described electric power conversion multiplex circuit, and when described input switch device connects described first power supply, if described first power supply is alternating current power supply, then the electric current flowing through described inducer is full-wave electric current。
5. multi-power supply system according to claim 3, wherein, the neutral point of the tap and bus of taking from described second source is connected。
6., for a method for multi-power supply system, described multi-power supply system includes the first power supply, second source, input switch device, electric power conversion multiplex circuit and inverter, and described method includes:
Control described input switch device to switch between described first power supply and described second source；
Described in switching control according to described input switch device, the electric power from described first power supply or the electric power from described second source are changed by electric power conversion multiplex circuit；And
Control the described inverter electric power to changing multiplex circuit output from described electric power and change with output,
Wherein, described input switch device is mechanical switching device。
7. method according to claim 6, wherein, described mechanical switching device is relay or catalyst。
8. the method according to claim 6 or 7, wherein, described multi-power supply system is uninterrupted power source, and described first power supply is alternating current power supply, and described second source is battery,
And wherein, the electric power from described first power supply or the electric power from described second source are changed described in the switching control included according to described input switch device electric power conversion multiplex circuit and the electric power from described first power supply are carried out rectification or the electric power from described second source is discharged by electric power conversion multiplex circuit according to the switching control of described input switch device。
9. the method according to claim 6 or 7, wherein, described multi-power supply system also includes the inducer being arranged between described input switch device and described electric power conversion multiplex circuit, and when described input switch device connects described first power supply, if described first power supply is alternating current power supply, then the electric current flowing through described inducer is full-wave electric current。
10. method according to claim 8, wherein, the neutral point of the tap and bus of taking from described second source is connected。
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| CN201410710520.1A CN105703470A (en) | 2014-11-28 | 2014-11-28 | Multiple-power power supply system and method for multi-power power supply system |
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| CN201410710520.1A CN105703470A (en) | 2014-11-28 | 2014-11-28 | Multiple-power power supply system and method for multi-power power supply system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110069367A (en) * | 2018-01-24 | 2019-07-30 | 全汉企业股份有限公司 | Test power supply conversion system, power supply conversion circuit and test power supply conversion method |
| CN112968514A (en) * | 2020-08-20 | 2021-06-15 | 合肥海尔智能电子有限公司 | Power supply circuit and frequency conversion equipment |
| DE102023201487A1 (en) | 2023-02-21 | 2024-08-22 | Robert Bosch Gesellschaft mit beschränkter Haftung | Device for supplying a consumer, in particular an electrolyzer, and a method for controlling the device |
| DE102023201490A1 (en) | 2023-02-21 | 2024-08-22 | Robert Bosch Gesellschaft mit beschränkter Haftung | The invention relates to a method for supplying a consumer, in particular an electrolyzer |
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| CN110069367A (en) * | 2018-01-24 | 2019-07-30 | 全汉企业股份有限公司 | Test power supply conversion system, power supply conversion circuit and test power supply conversion method |
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| CN112968514A (en) * | 2020-08-20 | 2021-06-15 | 合肥海尔智能电子有限公司 | Power supply circuit and frequency conversion equipment |
| DE102023201487A1 (en) | 2023-02-21 | 2024-08-22 | Robert Bosch Gesellschaft mit beschränkter Haftung | Device for supplying a consumer, in particular an electrolyzer, and a method for controlling the device |
| DE102023201490A1 (en) | 2023-02-21 | 2024-08-22 | Robert Bosch Gesellschaft mit beschränkter Haftung | The invention relates to a method for supplying a consumer, in particular an electrolyzer |
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