TWM641362U - Solar power generation system for complementary power supply with mains electricity - Google Patents

Abstract

A solar power generation system with complementary power supply to commercial power, comprising at least one solar panel, an inverter and a first plug, the at least one solar panel converts solar energy into a DC power output; the inverter is electrically connected to the at least one solar panel , converting the DC power to an AC power output; the first plug is electrically connected to the inverter through a first power line to output the AC power. This new type of mains complementary power supply solar power generation system can be directly connected in parallel with the power supply circuit of the mains through the socket, avoiding the safety hazards of traditional grid-connected construction, and improving the convenience of using the solar power generation system.

Description

Mains complementary power supply solar power generation system

The present invention relates to a solar power generation system, in particular to a solar power generation system capable of supplying power to users through the coordinated operation of a socket and a power supply system of the city power.

With the increasing consumption of non-renewable energy and the popularization of environmental awareness, people gradually turn to the development of renewable energy (Renewable Energy), among which solar power is the most common.

In addition to converting the direct current generated by the solar panel into alternating current through an inverter, the solar power generation system needs to be combined with the existing distribution box or switchboard of the power user Electric energy can be input into the power supply circuit of the mains only when the network construction is required. However, the centralized distribution box or switchboard may be responsible for the power supply management of the entire floor and the entire apartment, resulting in a higher voltage or current for the distribution box or switchboard, which will inevitably increase Potential safety hazards during grid-connected construction have caused hidden concerns for the safety of construction personnel, and the existing grid-connected operations are time-consuming and labor-intensive, resulting in the inability to further improve the convenience of solar power generation systems.

In view of this, this new model provides a solar power generation system with complementary power supply to the mains, which can be directly connected to the power supply circuit of the mains through the socket, so as to improve the convenience of using the solar power system and avoid the dangers that may be caused by traditional grid-connected construction.

In order to achieve the above-mentioned purpose, the new utility power complementary solar power generation system for connecting to a socket includes: At least one solar panel for converting solar energy into a DC power output; An inverter, electrically connected to the at least one solar panel, converts the DC power to an AC power output; A first plug is electrically connected to the inverter through a first power line to output the AC power.

The solar power generation system with complementary mains power supply of the present invention performs DC-AC conversion through the inverter, converts the DC power generated by the at least one solar panel into an AC power output, and then directly passes the AC power through the socket through the first plug Output to the existing power supply circuit, so that the solar power generation system can coexist with the existing power supply circuit to supply power, without additional grid-connected construction of the distribution box or switchboard, which can effectively avoid the high voltage and high voltage of the distribution box or switchboard. Potential safety concerns caused by electric current improve the safety and convenience of solar power generation systems.

Please refer to Fig. 1A and Fig. 1B, the solar power generation system 10 of the present invention includes at least one solar panel 11, an inverter 12, and a first plug 13. Fig. 1A shows the front of the at least one solar panel 11 Presentation, Figure 1B presents with the back side of the at least one solar panel, the received solar energy is converted into electrical energy by the at least one solar panel 11, and the converted electrical energy is output as a DC power supply, wherein the at least one solar panel 11 is connected to a Solar panel junction box 111, the solar panel junction box 111 is arranged on the back side of the at least one solar panel 11, the power generated by the at least one solar panel 11 is connected to the external circuit by the solar panel junction box 111, the at least one solar panel 11 can be an aluminum frame solar panel, a foldable solar panel, a flexible solar panel or a semi-flexible solar panel, and users can replace solar panels of different styles according to different usage requirements.

The inverter 12 is electrically connected to the at least one solar panel 11, and is arranged on the back of the at least one solar panel 11, to receive the DC power output by the at least one solar panel 11, and convert the DC power into a AC power output, wherein the inverter 12 can be a micro-inverter with a maximum power point tracking (MPPT) function, through which the conversion efficiency of the solar panel 11 can be improved and avoid DC high voltage and weak light effect when power conversion is on. In this embodiment, the inverter 12 is disposed on the backlight surface of the at least one solar panel 11 to avoid direct sunlight, and the inverter 12 can also be disposed on a wall or a floor without direct sunlight.

The first plug 13 is electrically connected to the inverter 12 through a first power line 14, and the AC power is output from the first plug 13, wherein the socket 20 can be a two-hole socket or a three-hole socket.

Please refer to FIG. 2, the first plug 13 can be directly inserted into any existing socket 20 in the home of the user, thereby connecting the solar power generation system 10 to the power supply circuit used by the user daily, for example In other words, the socket 20 can be any socket 20 in the user's home, and the present invention outputs the AC power through the first plug 13 to the power supply circuit used by the user through the socket 20, so as to reduce the power consumption. Electric households rely on the power supply of the original power supply circuit, reducing electricity expenses.

In this embodiment, the inverter 12 can detect a power supply voltage of the socket 20 through the first plug 13, and adjust a voltage value of the AC power supply according to the power supply voltage, so that the voltage value of the AC power supply Comply with the supply voltage of the socket 20. For example, when the power supply voltage of the mains 40 to the socket 20 is 110V, the inverter 12 adjusts the voltage of the AC power to 110V to meet the power supply specification of the mains 40 .

Further referring to Fig. 3, at least one solar panel 11 of the present invention can be arranged in a more sunny area of a house 30, such as the top floor of the house 30, to improve the conversion efficiency of solar energy, and the first power line 14 runs along the The wall of the house 30 is installed, and the first plug 13 is inserted into a socket 20 on the outer wall of the house 30 , so as to input the AC power into the existing power supply circuit of the house 30 .

Please refer to FIG. 4 , taking an example of an electricity user whose existing power supply circuit includes a plurality of outlets 20 , and the plurality of outlets 20 are powered by a mains 40 . When an electrical appliance 50 is connected to one of the sockets 20, the utility power 40 supplies power to the household appliance 50 through the socket 20; Being arranged in the same power supply circuit, the AC power provided by the solar power generation system 10 can be transmitted to the home appliance 50 through the plurality of sockets 20 , thereby supplying power to the home appliance 50 .

When the solar power generation system 10 is connected to any socket 20, it is connected to the power supply circuit of the socket 20, that is, it coexists with the power supply circuit of the commercial power 40 to supply power, and the power supply circuit of the commercial power 40 and the solar power generation system 10 Various loads can be supplied with power, and the AC power output from the solar power generation system 10 can replace the commercial power 40, reducing the amount of power supplied by the commercial power 40 required by power consumers.

Please refer to Fig. 5, in another embodiment, the solar power generation system 10 of the present invention further includes a control unit 15 and a second plug 16, the control unit 15 has a socket 20, the first plug 13 Insert into the socket 20 of the control unit 15 and electrically connect with the control unit 15, so that the control unit 15 receives the AC power outputted by the first plug 13, wherein the control unit 15 can be an electric meter, such as current and voltage surface.

The second plug 16 is electrically connected to the control unit 15 through a second power line 17, and the AC power is output from the second plug 16, wherein the socket 20 can be a two-hole socket or a three-hole socket.

Preferably, the control unit 15 calculates a power generation degree of the at least one solar panel 11 according to the AC power supply, and the control unit 15 has a display panel, and the control unit 15 displays the power generation degree on the display panel for use The electricity user understands the operating benefits of the solar power generation system 10 in a visualized manner.

When the power supply circuit of the commercial power 40 is in a low-load or no-load state, the power supply voltage of the commercial power 40 will increase accordingly due to the drop in current value. If the control unit 15 synchronously increases the voltage value of the AC power supply, At this time, when the power supply voltage of the mains 40 drops due to factors such as unstable power supply, the AC power output by the solar power generation system 10 will flow back to the mains terminal, which may affect the stability of the power supply of the public power grid and cause public power grid failure. Equipment damage.

Therefore, preferably, the control unit 15 includes a power-off switch. When the control unit 15 determines that the power supply voltage of the socket 20 connected to the second plug 16 is greater than a preset voltage warning value, the control unit 15 controls the power-off switch to disconnect to stop outputting the AC power.

For example, under normal conditions, the power supply voltage of the socket 20 is 110V. When the electricity load in the user's home is low, the power supply voltage of the socket 20 will be slightly increased, for example, 115V. And in this situation, since the electricity load in the household of the electricity consumer is low, that is, the demand for electricity is relatively low, so the control unit 15 can control the disconnection of the power switch to suspend the power of the solar power generation system 10 to the household of the electricity consumer. The power supply loop supplies power, and prevents the AC power output by the solar power generation system 10 from flowing backward to the mains terminal.

In addition, when the control unit 15 judges that a supply current of the AC power supply is greater than a current warning value, the control unit 15 controls the power-off switch to disconnect the circuit, so as to stop outputting the AC power supply, thereby preventing overload or leakage Situation happens.

Please refer to shown in Fig. 6, in a preferred embodiment, this inverter 12 is connected with a current transformer 19, and this current transformer 19 can be connected with a master switch 18 at the ammeter place, and with the master switch 18 The load is connected to the live wire, and the current transformer 19 is used to detect the power flow direction in the home of the power consumer, and transmit the current data to the inverter 12, and the inverter 12 adjusts the output power according to the current data. When the electric power flows backward in the household, the current transformer 19 transmits the reverse current data to the inverter 12, and the inverter 12 calculates the reverse current value and automatically adjusts the solar power. For example, on a 110V loop, when the current transformer 19 detects a reverse current value of 1A, the inverter 12 will reduce the current value by 1A, which is equivalent to reducing the power of 110W. On the contrary, when the current transformer 19 detects that the mains power supply current increases, it transmits the data of the amount of forward current increase to the inverter 12, and the inverter 12 calculates the increased forward current value and automatically adjusts To increase the solar output power. Through the current transformer 19, the power output can be adjusted automatically in real time, so as to achieve the balance between the power supply and demand of the household appliance load and the solar power generation, and prevent the excess power generated by the solar power from flowing backward into the public power grid. Wherein, the current transformer 19 can be an open-type wireless current transformer or an open-type wired current transformer, and the open-type current transformer 19 can be directly set on the live line at the main switch 18 without wire construction, which can Avoid the dangers of wire construction.

In the solar power generation system 10 of the new commercial electricity complementary power supply, the DC power generated by the at least one solar panel 11 is converted into an AC power output by the inverter 12, and the AC power is directly passed through by the first plug 13. The socket 20 is output to the existing power supply circuit, without additional grid-connected construction of the distribution box or switchboard, which can avoid the high voltage and high current of the distribution box or switchboard from causing danger to construction personnel, and facilitates the upgrading of the solar power generation system 10 The safety in application, on the other hand, improves the convenience of using the solar power generation system 10 and saves time and money spent in traditional grid-connected construction. In addition, the present model further provides overvoltage protection (Over Voltage Protection, OVP), overcurrent protection (Over Current Protection, OCP) and reverse current protection for the solar power generation system 10 through the setting of the control unit 15, not only protecting The safety of the solar power generation system 10 further protects the stable power supply of the public grid.

10: Solar power generation system 11: Solar panels 111: Solar panel junction box 12: Inverter 13: First plug 14: The first power cord 15: Control unit 16: Second plug 17: Second power cord 18: Main switch 19: Current transformer 20: socket 30: Housing 40: Mains electricity 50: Home appliances

Fig. 1A: The first schematic diagram of the new type solar power generation system with complementary mains power supply. Fig. 1B: The second schematic diagram of the solar power generation system for the new utility power complementary power supply. Figure 2: Schematic diagram of the first application of the new utility power complementary solar power generation system. Fig. 3: A schematic diagram of the second application of the solar power generation system for the new commercial power complementary power supply. Figure 4: A schematic diagram of the connection between the utility model and the mains power supply circuit. Fig. 5: The third schematic diagram of the solar power generation system for the new utility power complementary power supply. Fig. 6: The fourth schematic diagram of the solar power generation system for the new utility power complementary power supply.

10: Solar power generation system

11: Solar panels

13: First plug

14: The first power cord

Claims (10)

A solar power generation system with complementary power supply for commercial power, for connecting to a socket, including: at least one solar panel, which converts solar energy into a DC power output; an inverter, which is electrically connected to the at least one solar panel, and converts the DC power into a AC power output: a first plug electrically connected to the inverter through a first power line to output the AC power. In the solar power generation system with complementary mains power supply as described in Claim 1, wherein the inverter further adjusts the voltage value of the AC power supply according to a power supply voltage of the socket. The solar power generation system with complementary mains power supply as described in claim 1 further includes: a control unit electrically connected to the first plug; a second plug electrically connected to the control unit through a second power line to output the AC power. In the solar power generation system with complementary mains power supply as described in claim 3, wherein the control unit calculates a degree of power generation of the at least one solar panel according to the AC power supply. According to the solar power generation system with complementary mains power supply described in Claim 4, the control unit has a display panel, and the display panel displays the degree of power generation. The solar power generation system with complementary mains power supply as described in claim 3, wherein, when the control unit judges that a power supply voltage of the socket is greater than a voltage warning value, the control unit controls a power-off switch to be turned off, and stops outputting the AC power . The solar power generation system with complementary mains power supply as described in claim 3, wherein, when the control unit judges that a supply current of the AC power supply is greater than a current warning value, the control unit controls a power-off switch to turn off, and stops outputting the AC power supply. power supply. The solar power generation system with complementary power supply to mains as described in claim 3, wherein, the inverter is connected to a current transformer, and the current transformer is connected to the main switch of the electric meter, and the current transformer detects the current data of the user’s home and It is transmitted to the inverter, and the inverter adjusts the output power according to the current data. According to claim 3, the solar power generation system with complementary mains power supply, wherein the control unit is an electric meter. According to claim 8, the solar power generation system with complementary mains power supply, wherein the current transformer is an open-type wireless current transformer or an open-type wired current transformer.

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