WO2021258402A1

WO2021258402A1 - System and method for inputting multiple backup power supplies and outputting one or more power supplies

Info

Publication number: WO2021258402A1
Application number: PCT/CN2020/098349
Authority: WO
Inventors: 牛升阳
Original assignee: 牛升阳
Priority date: 2020-06-27
Filing date: 2020-06-27
Publication date: 2021-12-30

Abstract

A system and method for inputting multiple backup power supplies and outputting one or more power supplies. The system consists of one or more AC/DC backup power supply input sub-circuits (1), a transformation and convergence sub-circuit (2), one or more DC power supply output sub-circuits (3), one or more AC power supply output sub-circuits (4), etc. In the novel system, multiple (comprising one) backup AC and/or multiple (comprising one) backup DC power supplies are inputted simultaneously, the inputted backup power supplies, regardless of primary and secondary, and are processed and converged to a common circuit, and one or more DC and/or AC power supplies are outputted from the common circuit, so as to ensure that other backup power supplies continue to provide power output when some backup power supplies are accidentally interrupted, thereby ensuring the reliable supply of system power. The invention is particularly suitable for communications, medicine, command, traffic, or other important departments and occasions.

Description

A system and method for multiple backup power sources to input one or multiple power sources

Technical field

The present invention relates to the technical field of standby power switching, in particular to a single or multiple backup AC power supply, a single or multiple DC power supply, and a mixed input, conversion, collection, and switching of the AC power supply and the DC power supply, and then provide one or more channels System and method for AC and DC power output.

Background technique

In some important power-using occasions, the power supply must not be interrupted, such as communications, medical treatment, command, transportation or other important departments and occasions. If the power supply is suspended, it will cause serious consequences.

technical problem

In order to realize the uninterrupted power supply of the system, the most commonly used method is to use UPS power supply, but the capacity of UPS is limited and cannot work for a long time; some systems use the method of connecting the main and standby power sources at the same time, that is, use the main power supply at ordinary times. When the power supply fails, it is detected by the detection circuit and switched from the switching circuit to the backup power supply. The detection and switching of this method will increase the complexity and cost of the system. On the other hand, the reliability and switching timeliness are not ideal. , It is also possible that the phase change at the moment of switching may cause system interference or other failures.

Technical solutions

The present invention intends to additionally adopt a new way of simultaneously inputting multiple AC and DC backup power sources to ensure uninterrupted power supply, such as connecting several mains, several gasoline and diesel generators, several hydroelectric generators, and several wind power generators at the same time. Machines, several solar generators, one or more UPS outputs, and other forms of several generators and power supply equipment are simultaneously input to the system of the present invention, regardless of primary or secondary, so that the number of backup power sources is almost unlimited Yes, it can be connected to several channels as needed, or it can be dozens of channels or even more, which increases the reliability of power supply; several input backup power sources are integrated and converged to output one or more channels of AC and DC The purpose of continuous power supply is that when part of the backup power supply is unexpectedly interrupted, other backup power supplies will continue to provide power without causing serious consequences of power interruption.

Beneficial effect

The present invention realizes a convenient, economical, and effective method that can satisfy the normal and continuous power supply of important departments and occasions to the utmost extent and has positive significance, and can realize social and economic benefits at the same time.

Description of the drawings

Fig. 1 is a schematic diagram of the overall structure of a system and method for multiple backup power inputs of one or multiple power outputs according to the present invention.

Fig. 2 is a simplified schematic diagram of the half-wave rectifier circuit form of the sub-circuit (201) shown in Fig. 1.

Fig. 3 is a simplified schematic diagram of the full-wave/bridge rectifier circuit form of the sub-circuit (201) shown in Fig. 1.

Fig. 4 is a simplified schematic diagram of the three-phase full-wave/bridge rectifier circuit form of the sub-circuit (201) shown in Fig. 1.

The best mode of the present invention

The present invention specifically proposes a multiple backup power input, one or multiple AC and DC power output systems, which can connect multiple backup power sources at the same time, output one or multiple AC and DC power at the output end, and ensure that as long as there is at least one input The power supply is continuous and uninterrupted when the voltage, power supply, and power are normal. The technical solution is described below.

The structure of the system consists of one or more backup power input sub-circuits (1), conversion and collection sub-circuits (2), one or more DC power output sub-circuits (3), and one or more AC power output sub-circuits (4) Equal composition.

First of all, the input side of this system is composed of one or more backup power input sub-circuits (1). Each input sub-circuit (1) can be DC, AC, periodic square wave, periodic pulse, and From other forms of power supplies and power generation devices, each input backup power supply can be the above single power supply, or a combination of the above various power supplies; the backup power input sub-circuit (1) can be directly input by direct connection , You can also add filtering, conditioning, power transformation or isolation modules/sub-circuits according to actual requirements to achieve special filtering, conditioning, isolation, voltage transformation, current conversion or other forms of functional requirements; backup power input sub-circuit (1) filtering , Conditioning, power transformation or isolation modules/sub-circuits include but are not limited to wires, circuits, modules, active electronic devices, passive electronic devices or chips.

Secondly, the conversion and collection sub-circuit (2) is mainly equipped with one or more, one or more types of functional modules/sub-circuits (201) according to the characteristics of each input power supply; (201) can be one or more Half-wave rectifier, single-phase full-wave/bridge rectifier, three-phase or multi-phase full-wave/bridge rectifier, three-phase or multi-phase half-wave rectifier, other circuits, modules, active devices, passive devices or chips; modules; The /sub-circuit (201) is used for the conversion of each input backup power supply, and then the output of each (201) sub-circuit is collected together.

Thirdly, the function of one or more DC power output sub-circuits (3) is to output one or multiple DC power supplies. Filtering, conditioning, power transformation or isolation modules can also be added to the DC output sub-circuit (3) according to actual needs. Sub-circuits to achieve special filtering, conditioning, transformation, transformation, isolation or other forms of functional requirements. Filtering, conditioning, transformation or isolation modules/sub-circuits include but are not limited to circuits, modules, active electronic devices, Passive electronic devices or chips; each output of the sub-circuit (3) can be output separately or divided into multiple branch outputs according to actual needs. Each sub-circuit or branch output can be single-wire or multi-wire, which can be Unipolar can also be multi-polar, it can be single-phase or multi-phase.

Finally, one or more channels of AC power output sub-circuit (4) output one or more channels of AC power with the cooperation of inverters, choppers or other substation equipment/modules. It can also be used in the sub-circuit (4) according to actual needs. 4) Add filtering, conditioning, power transformation or isolation modules/sub-circuits to achieve special filtering, conditioning, voltage transformation, current conversion, isolation or other forms of functional requirements, filtering, conditioning, power transformation or isolation modules/sub-circuits Circuits include, but are not limited to, circuits, modules, active electronic devices, passive electronic devices or chips; each output of the sub-circuit (4) can be output separately or divided into multiple branch outputs according to actual needs, each sub-circuit or The branch output can be single-line or multi-line, single-pole or multi-pole, single-phase or multi-phase.

Embodiments of the present invention

In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments; it should be understood that the specific embodiments described here are only for explaining the present invention. It does not limit or change the protection scope of the present invention.

The input terminal of the present invention is one or multiple backup AC or backup DC power supplies, or one or multiple AC and DC backup power sources mixed input, such as connecting several AC mains, several DC mains, and several diesel ACs at the same time. Or DC generators, several water conservancy generators, several wind power generators, several solar power generators, one or more UPS outputs and other forms of power are simultaneously input into the system of the present invention, so that the number of backup power sources is Almost unlimited, it can be connected to several channels as needed, or dozens of channels or even more. The different types of power supplies for these inputs do not distinguish between the main and secondary circuits, and their levels are the same; several channels After the backup input power is rectified, integrated, one-way controlled, and converged, it is output to a common output line, and then divided into one or more high-reliability AC and DC power supplies for output. The purpose is when part of the backup power is unexpectedly interrupted. Other backup power sources continue to provide power at times without power failure.

First of all, the overall structure of the system is composed of the following parts: one or more backup power input sub-circuits (1), conversion and collection sub-circuit (2), one or more DC power output sub-circuits (3), One or multiple AC power output sub-circuits (4), etc.

The power input through the backup power input sub-circuit (1) can be directly input to the next level circuit in a direct connection mode; because some occasions need to filter, adjust, transform, transform, isolate or other forms of the input power. Functional requirements. Therefore, according to actual requirements, filtering, conditioning, power transformation or isolation modules/subcircuits can be added to the input sub-circuit (1) to achieve these functional requirements; the filtering, conditioning, and power transformation of the backup power input sub-circuit (1) Or the isolation module/sub-circuit can be composed of wires, circuits, modules, active electronic devices, passive electronic devices, chips, or their combination.

The power from the backup power input sub-circuit (1) enters the conversion and collection sub-circuit (2). The main function of this part of the circuit is to transform the input power sources so as to gather them into a common circuit. It is equipped with one or more, one type or multiple types of functional modules/sub-circuits (201) for the characteristics of each input power supply. For example, the input AC power is rectified by a rectifier circuit to convert it into DC. The one-way control circuit is controlled by the one-way control circuit, which can prevent the power supplies of each input from streaming with each other, and then bring them together. (201) It can be composed of one or more half-bridge rectifiers, full-wave/full-bridge rectifiers, three-phase or multi-phase half-wave/half-bridge rectifiers, modules, active devices, passive devices or chips, etc., or the above The combined form of the form, and then the output of each (201) sub-circuit is brought together.

Part of the transformed and pooled power supply after the transformation and collection sub-circuit (2) is output through one or more DC power output sub-circuits (3). The function of (3) is to output one or multiple DC power supplies, which can also be based on actual conditions. It is necessary to add filtering, conditioning, transformation or isolation modules/sub-circuits to the DC output sub-circuit (3) to achieve special filtering, conditioning, transformation, transformation, isolation or other forms of functional requirements. The above parts are It is composed of various circuits, modules, active electronic devices, passive electronic devices, chips or their combinations; each output of the sub-circuit (3) can be output in the form of sub-circuits or divided into multiple branches according to actual needs. Outputs, these outputs can be single-line or multi-line, single-pole or multi-pole, single-phase or multi-phase.

In addition, another part of the transformed and pooled power supply after the transformation and collection sub-circuit (2) is output through one or more AC power output sub-circuits (4). The function of (4) is to output one or multiple AC power sources. AC power output (4) is converted from DC with the cooperation of inverters, choppers or other substation equipment/modules to output one or multiple AC power sources. Filtering can also be added to the AC output sub-circuit according to actual needs. , Conditioning, power transformation or isolation modules/sub-circuits to achieve special filtering, conditioning, voltage transformation, current conversion, isolation or other forms of functional requirements. The above parts are composed of various circuits, modules, active electronic devices, Passive electronic devices, chips or their combination; each output of the sub-circuit (4) can be output in the form of sub-circuits or divided into multiple branch outputs according to actual needs. These outputs can be single-wire or Multi-wire, it can be single-pole or multi-pole, single-phase or multi-phase.

Industrial applicability

After the multi-channel AC and DC backup power supply is processed and output by the system of the present invention, an uninterrupted power supply can be obtained. As long as one of the input backup power supplies has a normal voltage, current and power, the output power supply is not Will be interrupted, so that the reliability of the power supply system is as high as possible, providing a stable, continuous, reliable, and low-cost power supply for certain power supply systems such as communications, medical treatment, command, transportation or other important departments and occasions .

Claims

A system and method for inputting one or multiple power outputs from multiple backup power sources, which is characterized in that: one or more backup AC/DC power sources input sub-circuit (1), conversion and collection sub-circuit (2), one or more DC The power output sub-circuit (3), one or multiple AC power output sub-circuits (4) and so on.
The system and method for multiple backup power input one or multiple power outputs according to claim 1, wherein the one or multiple backup power input sub-circuits (1) are characterized in that: (1) backup power input It is one or more channels. Each backup power input can be DC or AC, or periodic square wave, periodic pulse, and other forms of power supply and power generation devices. The backup power input of each input can be of the above single form The power supply can also be a combination of the above various power supplies; (1) It can be directly input, or it can be added according to actual requirements by adding filtering, conditioning, power transformation or isolation modules/sub-circuits to achieve special filtering, conditioning, isolation, and transformation , Variable current or other forms of functional requirements; (1) filtering, conditioning, power transformation or isolation modules/sub-circuits include but not limited to circuits, modules, active electronic devices, passive electronic devices or chips; (1) The input power can be single-phase, multi-phase, single-line, multi-line, single-pole, or multi-pole.
According to a system and method for multiple backup power input one or multiple power output according to claim 1, the conversion and collection sub-circuit (2) is characterized in that: corresponding to each channel and each type of input power source Features are equipped with the same or different functional modules/sub-circuits (201); (201) can be one or more half-wave rectifiers, single-phase full-wave/bridge rectifiers, three-phase or multi-phase full-wave/bridge rectifiers, three Phase or multi-phase half-wave rectifier, other circuits, modules, active devices, passive devices or chips; (201) is used for the conversion of each input backup power supply, and then each (201) output power supply is collected together.
The system and method for inputting one or multiple power outputs from multiple backup power sources according to claim 1, wherein the one or more direct current power output sub-circuits (3) are characterized in that: one or multiple direct current power sources are output , According to actual needs, filtering, conditioning, transformation or isolation modules/sub-circuits can be added to the DC power output sub-circuit (3) to achieve special filtering, conditioning, transformation, transformation, isolation or other forms of functions Requirements, filtering, conditioning, power transformation or isolation modules/sub-circuits include but are not limited to circuits, modules, active electronic devices, passive electronic devices or chips; each DC power output sub-circuit (3) can also be divided according to actual needs One or several; the output power of the DC power output sub-circuit (3) can be single-phase or multi-phase, can be one-line or multi-line, and can also be single-pole or multi-pole.
The system and method for inputting one or multiple power outputs of multiple backup power sources according to claim 1, wherein the one or more AC power output sub-circuits (4) are characterized in that: in the inverter, the chopper Output one or multiple AC power sources under the cooperation of other transformers or other transformer equipment/modules. Filtering, conditioning, power transformation or isolation modules/sub-circuits can also be added to the AC power output sub-circuit (4) according to actual needs. , In order to achieve special filtering, conditioning, transformation, transformation, isolation or other forms of functional requirements, filtering, conditioning, transformation or isolation modules/sub-circuits include but are not limited to circuits, modules, active electronic devices, passives Electronic devices or chips; each AC power output can also be divided into one or several channels according to actual needs; the waveform of the AC output power voltage and current can be sine/cosine, square, pulse or other forms of alternating , Time-varying, intermittent power supply; the output power of the AC power output sub-circuit (4) can be single-phase or multi-phase, one-line or multi-line, or single-pole or multi-pole.