TWI762922B - Modular inverter of intelligent microgrid with variable phase voltage - Google Patents

Abstract

The present invention provides a modular inverter of intelligent microgrid with variable phase voltage, comprising sets of modular inverters and an intelligent control unit. The sets of modular inverters are connected in parallel, which configured to an input end and an output end respectively. The input end is in parallel connection with a phase detector while the said inverters are configured to a phase coordinator at output end respectively. The intelligent control unit is connected to the phase detector and the phase coordinator. Thereby, the intelligent control unit has multiple systems for phase current output, including single-phase two-wire system, three-phase three-wire system and three-phase four-wire system that the users can select one of the said systems for phase current output according to their requirements; so as to let the said phase coordinator outputs the corresponding phase and voltage accordingly in order to be applied to all kinds of grids, which standardizes and modularizes the power distribution in residences or workplaces without requirement for complicated line configuration and management and thus sharply reduces costs and improves the applicability of the present invention.

Description

Modular Smart Microgrid Variable Phase Voltage Inverter

The present invention provides a modularized intelligent microgrid variable phase voltage inverter, especially a modularized intelligentized selective output single-phase two-wire, single-phase three-wire, three-phase three-wire and three-phase four-wire currents Configurator.

As far as the configuration of my country's power grid is concerned, the AC power supply is usually one of single-phase two-wire, single-phase three-wire, three-phase three-wire and three-phase four-wire. Currently, commercially available inverters only support one of them. Can not support single-phase two-wire, single-phase three-wire, three-phase three-wire and three-phase four-wire system at the same time, especially three-phase three-wire system, usually need to use another transformer, and change the voltage and phase after two transformations to meet the scene In the user's power grid system, the power loss is very large, the cost is high, the efficiency is poor, and it is not environmentally friendly.

Therefore, after the circuit is configured, it is difficult to apply for changes, and the procedures and engineering are cumbersome. After the change, it is still necessary to consider the types of electrical appliances and the output of AC power, which will limit the user's use of electrical appliances.

When using a transformer, it will increase the cost of the user, and the self-consumption of the transformer is very large, and the transformer usually has high-frequency noise during operation, which will also cause trouble to the relevant personnel.

In view of this, our inventors have devoted themselves to further research on the output configuration of electric power, and started to develop and improve, hoping to solve the above problems with a better invention, and the present invention has come out after continuous experiments and modifications.

In other words, the purpose of the present invention is to solve the aforementioned problems. In order to achieve the above purpose, our inventors provide a modular smart microgrid variable phase voltage inverter, which includes: multiple groups of modular inverters , which are arranged in parallel, and have an input end and an output end respectively, and a phase detector is respectively arranged at the input end, and a phase coordinator is respectively arranged at the output end of the inverter; and a an intelligent control unit, which is connected to the phase detector and the phase coordinator, the intelligent control unit is provided with a plurality of phase current and voltage output modes, and the intelligent control unit selects one of the phase current and voltage output modes so that the The phase coordinator outputs the corresponding phase and current and voltage accordingly.

According to the above-mentioned modular smart microgrid variable phase voltage inverter, wherein the phase detector is electrically connected to a mains, and an open circuit is respectively provided between the mains and the phase detector When the utility power stops supplying power, the circuit breaking device forms a circuit breaker.

According to the above-mentioned modular smart microgrid variable phase voltage inverter, wherein the inverters are further provided with a battery unit respectively, and the inverters are respectively coupled to a first solar power generation unit.

According to the above-mentioned modularized smart microgrid variable phase voltage inverter, wherein, multiple groups of modularized inverters are combined in parallel to form single-phase two-wire 220V, single-phase three-wire 220/110V, Three-phase three-wire 220V and three-phase four-wire 220/380V output mode.

According to the above-mentioned modular smart microgrid variable phase voltage inverter, the phase current output modes include single-phase two-wire 220V, single-phase three-wire 220/110V, three-phase three-wire 220V, and three-phase four-wire Line 220/380V output mode, and the phase coordinator outputs the corresponding phase and current voltage.

According to the above-mentioned modular smart microgrid variable phase voltage inverter, wherein the phase coordinator is collected in an output line, the output line is further coupled to a solar inverter, and the solar inverter The device is connected with a second solar power generating unit.

According to the above-mentioned modular smart microgrid variable phase voltage inverter, wherein the phase coordinators are collected in an output line, and the output line is electrically connected to at least one load.

From the above description and settings, it is obvious that the present invention mainly has the following advantages and effects, which are described in detail as follows:

1. The present invention controls or sets multiple groups of modular inverters through the intelligent control unit to form a complex phase current and voltage output mode, including single-phase two-wire 220V, single-phase three-wire 220/110V, three-phase three-wire 220V and three-phase three-wire 220V Phase four-wire 220/380V output, and the user can select one of the phase current and voltage output modes according to the needs of use, so that the phase coordinator can output the corresponding phase and current and voltage, so as to be suitable for various power grids , by means of standardization and modularization of power distribution in homes or industrial places without complicated circuit configuration and management, thereby greatly reducing costs and improving the overall applicability of the present invention.

Regarding the technical means of our inventors, several preferred embodiments are hereby described in detail below with the accompanying drawings, so as to provide for an in-depth understanding and approval of the present invention.

Please refer to FIG. 1 first, the present invention is a modular smart microgrid variable phase voltage inverter, which includes:

A plurality of modular inverters 1 are arranged in parallel, and have an input end and an output end respectively, and a phase detector 2 is respectively provided at the input end, and the phase detector 2 can be detecting the phase of the initial configuration of the circuit; and the inverter 1 is respectively provided with a phase coordinator 3 at the output end; and

An intelligent control unit 4, which is connected to the phase detector 2 and the phase coordinator 3, the intelligent control unit 4 can control or set a complex phase current and voltage output mode, and the intelligent control unit 4 selects one of the The phase current and voltage output mode is matched with the phase configured by the phase detector 2 circuit, so that the phase coordinator 3 outputs the corresponding phase and current and voltage accordingly.

In a specific embodiment, the input end of the inverter 1 is electrically connected to a mains 5, and the mains 5 is respectively connected to the phase detector 2, and the mains 5 and the phase detector Each of the two has a circuit breaker 51. In one embodiment, it may include multiple sets of inverter modules M, and each inverter module M includes an inverter 1, a phase detector 2, and a phase detector 2. The coordinator 3 and the circuit breaking device 51, whereby, when the mains 5 is established, the owner or user applies to the relevant competent authority for registration, and the phase detector 2 can be used to detect the phase output of the mains 5 configured in the building, Then, it is transmitted to the intelligent control unit 4, so as to control the phase coordinator 3 to output the corresponding phase and current and voltage according to the phase current and voltage output mode; in addition, when the mains 5 stops supplying power, for example, when the power is cut off, the circuit breaking device 51 An open circuit is formed to prevent the reverse flow of power and there are concerns about safety.

As for the power source of the inverters 1 , in one embodiment, the inverters 1 are respectively provided with a battery unit 11 , and the modular inverters are respectively coupled to a first solar power generation unit 12 to The first solar power generation unit 12 generates electricity and stores the electricity in the battery unit 11 , so as to facilitate the conversion and output of current and voltage by the modular inverter 1 .

As for the phase current output mode, in one embodiment, it includes output modes of single-phase two-wire 220V, single-phase three-wire 220/110V, three-phase three-wire 220V, and three-phase four-wire 220/380V, so as to As mentioned above, by making the phase coordinator 3 output the corresponding phase and current and voltage; therefore, it can be known that the phase coordinator 3 is connected to a neutral line 6 at one end opposite to the inverter 1 and is electrically connected An output line 7; Thereby, since the single-phase two-wire system has one live wire and one ground wire, and provides a sine wave voltage of a single amplitude at the same time phase, at this time, when the three inverters 1 are configured, the phases are coordinated The controller 3 enables its three sets of live wires and ground wires to output the same phase current and voltage to supply power to the load 9; and in the three-phase three-wire output mode, the phase coordinator 3 enables all three inverters 1 to output to form a live wire (R, S, T), and the phase difference between the live wires is 120 degrees, which can provide three sets of 220V AC voltage; and in the three-phase four-wire output mode, the phase coordinator 3 also makes the three inverters 1 all It can output to form a live wire, and make the phase difference between the live wires 120 degrees, with the setting of the ground wire to form the neutral wire 6, so that three sets of 220/380V AC voltage can be provided, or it can be configured with the neutral wire 6 to provide three sets of The AC voltage of 220V enables the present invention to standardize and modularize the power distribution in homes or industrial places without the need for complex configuration and management of output lines 7, thereby greatly reducing costs and improving the overall applicability of the present invention. .

As for the selection of the phase current output mode by the intelligent control unit 4, it can be selected by direct detection, or selected by the user through the man-machine interface or remote set by the user, but it is only an example and does not This is limited.

In one embodiment, the output line 7 can be coupled to a solar inverter 8 , and the solar inverter 8 is connected with a second solar power generation unit 81 , so that the output line 7 can eliminate electricity At least one load 9 is electrically connected to facilitate the operation of power supply to the load 9, and the second solar power generation unit 81 can also be triggered to generate power to the load 9, so that in the event of a power failure, the second solar power generation unit 81 can still supply power.

To sum up, the technical means disclosed in the present invention can indeed effectively solve the problems of conventional knowledge, and achieve the expected purpose and effect, and it has not been published in publications before the application, has not been used publicly, and has long-term progress. The invention referred to in the Patent Law is correct, and the application is filed in accordance with the law. I sincerely pray that Jun Shang will give me a detailed examination and grant the invention patent. I am very grateful.

However, the above are only several preferred embodiments of the present invention, which should not limit the scope of the present invention. It should still fall within the scope of the patent of the present invention.

1: Inverter 11: battery unit 12: The first solar power generation unit 2: Phase detector 3: Phase Coordinator 4: Smart Control Unit 5: Mains electricity 51: Circuit breaker 6: Neutral wire 7: Line 8: Solar Inverter 81: Second solar power generation unit 9: Load M: Inverter module

FIG. 1 is a schematic diagram of the system architecture of the present invention.

1: Inverter

11: battery unit

12: The first solar power generation unit

2: Phase detector

3: Phase Coordinator

4: Smart Control Unit

5: Mains electricity

51: Circuit breaker

6: Neutral wire

7: Line

8: Solar Inverter

81: Second solar power generation unit

9: Load

M: Inverter module

Claims (5)

A modular smart microgrid variable phase voltage inverter, comprising: a plurality of modular inverters, which are arranged in parallel, and respectively have an input end and an output end, and the input end A phase detector is respectively provided, and a phase coordinator is respectively provided at the output end of the inverter; and an intelligent control unit is connected to the phase detector and the phase coordinator, and the intelligent control unit is provided with There are a plurality of phase current and voltage output modes, and the intelligent control unit selects one of the phase current and voltage output modes to enable the phase coordinator to output the corresponding phase and current and voltage; the phase detector is electrical Connected to a mains, and a circuit breaker is respectively provided between the mains and the phase detector, and when the mains stops supplying power, the circuit breaker forms an open circuit; the phase coordinator is collected in an output line, the The output line is further coupled to a solar inverter, and the solar inverter is connected with a second solar power generation unit. The modular smart microgrid variable phase voltage inverter according to claim 1, wherein the inverters are further provided with a battery unit, and the inverters are respectively coupled to a first solar power generation unit . The modular smart microgrid variable phase voltage inverter according to claim 1, wherein the inverters are combined in parallel to form single-phase two-wire 220V, single-phase three-wire 220/110V, three-phase three-wire 220V and Three-phase four-wire 220/380V output mode. The modular smart microgrid variable phase voltage inverter according to any one of claims 1 to 3, wherein the phase current output mode includes single-phase two-wire 220V, single-phase three-wire 220/110V , Three-phase three-wire 220V and three-phase four-wire 220/380V output mode, and the phase coordinator outputs the corresponding phase and current and voltage. The modular smart microgrid variable phase voltage inverter according to any one of claims 1 to 3, wherein the phase coordinators are collected in an output line, and the output line is electrically connected to at least a load.

Images