KR102242897B1 - Small motor generator using solar panel - Google Patents

Abstract

The present invention relates to a small motor generator using a solar panel, and the technical problem to be solved is to generate mechanical energy by using the light of the sun or lighting as an energy source of an electric motor, and convert it to electric energy through a generator. It is to make more efficient power generation by increasing the amount of recovery.
For example, light energy is incident in only one direction and is converted into electrical energy, and a circulation path of the current generated by the electrical energy is formed, but each is orthogonal to the magnetic fields acting from the bottom to the top, and is opposite to each other. A rotational power generator configured to form a current circulation path to generate a force in opposite directions to each other at a point perpendicular to a magnetic field among each current circulation path to rotate the rotation shaft; And it discloses a small motor generator including a power generating unit for converting the mechanical energy transmitted according to the rotational operation of the rotating shaft into electrical energy and outputting.

Description

Small motor generator using solar panel{SMALL MOTOR GENERATOR USING SOLAR PANEL}

An embodiment of the present invention relates to a small motor generator using a solar panel.

In general, motors and generators produce opposite energy. That is, the motor receives electrical energy supplied from the outside and converts it into mechanical energy. In addition, the generator converts mechanical energy by rotation of external forces (eg, hydraulic power, thermal power, nuclear power) into electrical energy through electromagnetic induction, as opposed to an electric motor.

As such, electric motors and generators that are in charge of different functions have required devices for the purpose of transformation or conversion of electric power. An example is a motor generator.

A typical motor generator is composed of a structure in which a separately manufactured motor and a generator are coupled through a connecting means, for example, a belt or a gear. These motor generators are used in combination in various forms depending on the type of motor and generator.

For example, the coupling method of the motor generator includes an induction motor and a DC generator, a synchronous motor and a synchronous generator, or a method of coupling a synchronous motor and a DC generator.

Such a general motor generator is designed to receive electrical energy from the outside as a power source of the motor. In the end, if you compare the amount of electrical energy initially consumed with the amount of electrical energy produced by the generator to determine the amount of power recovery, energy The disadvantage is that the efficiency is considerably lower.

Unexamined Patent Publication No. 10-2017-0000306 (Publication date: January 2, 2017) Unexamined Patent Publication No. 10-2010-0050674 (published date: May 14, 2010) Unexamined Patent Publication No. 10-2008-0079562 (Publication date: September 1, 2008)

An embodiment of the present invention uses a solar panel that generates mechanical energy by using the light of the sun or lighting as an energy source of an electric motor, and converts it to electrical energy through a generator, thereby increasing the amount of power recovered and enabling more efficient power generation. Offers small motor generators.

The small motor generator according to an embodiment of the present invention receives light energy in only one direction and converts it into electrical energy, and forms a circulation path of the current generated by the electrical energy, but a magnetic field acting from the bottom to the top A rotational power generator configured to generate a force in opposite directions at a point perpendicular to a magnetic field in each current circulation path by forming current circulation paths in opposite directions to each other to rotate the rotation shaft; And a power generation unit for converting mechanical energy transmitted according to the rotational motion of the rotation shaft into electrical energy and outputting it.

In addition, the rotational power generation unit, the housing provided with a transmission surface through which light is transmitted from the outside only one side; A magnetic field generator installed under the housing to form a magnetic field from a lower portion to an upper portion of the housing; A rotating frame having four side surfaces and disposed in the housing such that at least one of the four side surfaces faces the transmission surface; A rotation shaft disposed across the rear surface of the housing, passing through a center portion of the rotation frame and connected to the rotation frame; And a first solar panel installed on one of the two side surfaces and a second solar panel installed on the other side, the first solar panel installed on two side surfaces of the four side surfaces facing each other, the first solar panel A solar panel unit in which the panel and the second solar panel are arranged to face opposite polarities to each other; And a circulation coil extending from the anode of the first solar panel to form a plurality of current circulation paths in opposite directions respectively orthogonal to the magnetic field, and then connected to the cathode of the first solar panel, the first solar panel. The first wiring connecting between the anode of the second solar panel and the cathode of the second solar panel at the first connection node between the anode of the photovoltaic panel and the circulation coil, and the second connection node between the cathode of the first photovoltaic panel and the circulation coil. It may include a current circulation path portion including a second wiring connecting between the anodes of the second solar panel.

In addition, it further includes a shaft fixing portion for fixing the rotation shaft, the shaft fixing portion, a first permanent magnet installed at one end and the other end of the rotation shaft, respectively; And a plurality of second permanent magnets disposed below or above and below the first permanent magnet to be spaced apart from the first permanent magnet, and installed so that the first permanent magnet is magnetically levitated by a repulsive force with the first permanent magnet. can do.

In addition, the power generation unit includes a field connected to the rotation shaft and rotating, and an armature positioned inside the field, and generating electric energy through the armature according to the rotation of the field; And an inverter converting electrical energy generated through the DC generator into AC and outputting it.

In addition, the power generation unit may include a time switch that supplies external power to the armature of the DC generator when turned on to rotate the rotary shaft through a field of the DC generator, but is turned off automatically after a preset time; And an inverter switch that is driven to be turned on when the time switch is turned off to transfer power from the armature of the DC generator to the inverter.

According to the present invention, a small electric power generation using a solar panel capable of more efficient power generation by increasing the amount of power recovery by generating mechanical energy by using the light of the sun or lighting as an energy source of an electric motor, and converting it to electric energy through a generator. Generators can be provided.

1 is a side view showing the overall configuration of a small motor generator according to an embodiment of the present invention.
2 is a front view showing the configuration of a rotational power generator of a small motor generator according to an embodiment of the present invention.
3 is a diagram illustrating a bonding relationship between a solar panel unit and a current circulation path unit according to an exemplary embodiment of the present invention.
4 is a diagram illustrating a relationship between a current, a magnetic field, and a force through a first solar panel and a current circulation path portion according to an embodiment of the present invention.
5 is a diagram illustrating an operation method of the solar panel unit and the rotating frame shown in FIG. 4.
6 is a diagram showing a relationship between a current, a magnetic field, and a force through a second solar panel and a current circulation path portion according to an embodiment of the present invention.
7 is a diagram illustrating an operation method of the solar panel unit and the rotating frame shown in FIG. 6.
8 is a photograph of a sample manufacturing a rotational power generating unit according to an embodiment of the present invention and taking actual operation.

The terms used in the present specification will be briefly described, and the present invention will be described in detail.

Terms used in the present invention have selected general terms that are currently widely used as possible while taking functions of the present invention into consideration, but this may vary according to the intention or precedent of a technician working in the field, the emergence of new technologies, and the like. In addition, in certain cases, there are terms arbitrarily selected by the applicant, and in this case, the meaning of the terms will be described in detail in the description of the corresponding invention. Therefore, the terms used in the present invention should be defined based on the meaning of the term and the overall contents of the present invention, not a simple name of the term.

When a part of the specification is said to "include" a certain component, it means that other components may be further included rather than excluding other components unless specifically stated to the contrary. In addition, terms such as "... unit" and "module" described in the specification mean a unit that processes at least one function or operation, which may be implemented as hardware or software or a combination of hardware and software. .

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art may easily implement the present invention. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and similar reference numerals are attached to similar parts throughout the specification.

1 is a side view illustrating the overall configuration of a small motor generator according to an embodiment of the present invention, and FIG. 2 is a front view showing the configuration of a rotational power generator among a small motor generator according to an embodiment of the present invention, and FIG. 3 Is a view showing to explain the bonding relationship between the solar panel part and the current circulation path part according to an embodiment of the present invention, and FIG. 4 is a current and magnetic field through the first solar panel and the current circulation path part according to the embodiment of the present invention. And a diagram showing the relationship between the force, and FIG. 5 is a view illustrating an operation method of the solar panel unit and the rotating frame shown in FIG. 4, and FIG. 6 is a second solar panel according to an embodiment of the present invention. It is a view showing the relationship between the current, magnetic field, and force through the overcurrent circulation path part, FIG. 7 is a view showing to explain the operation method of the solar panel part and the rotating frame shown in FIG. 6, FIG. 8 is a diagram of the present invention. This is a photograph of a sample of a rotational power generator according to an embodiment and actual operation.

1 to 7, a small motor generator 1000 using a solar panel according to an embodiment of the present invention may include at least one of a rotational power generation unit 100 and a power generation unit 200.

The rotational power generation unit 100 receives light energy in only one direction and converts it into electrical energy, and forms a circulation path (hereinafter referred to as a current circulation path) (I) of the current generated by the electrical energy. , Forces in opposite directions at points perpendicular to the magnetic field (B) in each current circulation path by forming current circulation paths that are perpendicular to each other and to the magnetic field (B) acting from the bottom to the top direction (F ) Can be operated to rotate the rotation shaft 140.

To this end, the rotation power generation unit 100 includes a first housing 110, a magnetic field generation unit 120, a rotation frame 130, a rotation shaft 140, a solar panel unit 150, and a current circulation path unit 160 ) And at least one of the shaft fixing part 170 may be included.

The first housing 110 may have a transmissive surface through which light is transmitted from the outside of only one side. More specifically, the first housing 110 may be formed in a rectangular parallelepiped shape, and one side of the first housing 110 may be formed as a transparent surface 111. Here, the transmissive surface 111 may not have a member forming a surface, but it is preferable to form the transmissive surface 111 by applying a plate made of a transparent material to protect the component.

The first housing 110 includes an upper cover 112, a side cover 113, a lower cover 114, a front cover 115, and a rear cover 116 in addition to the transmission surface 111 according to the above structure. Can include. Here, the upper cover 112 and the side cover 113 may be blackened so that light does not enter the first housing 110 from the outside. Here, the side cover 113 may correspond to an opposite surface facing the transmission surface 111. In addition, the lower cover 114 refers to a bottom portion of the first housing 110 and a magnetic field generator 120 may be installed. One side of the rotation shaft 140 is connected to the front cover 115 in a contact or rotatable manner, and the rear cover 116 forms a surface connected to the power generation unit 200 and forms an interface with the power generation unit 200. . The rear cover 116 may have a hole through which the other side of the rotation shaft 140 passes, and the other side of the rotation shaft 140 may extend to the power generation unit 200 through the hole.

The magnetic field generating unit 120 is installed under the first housing 110, that is, in the lower cover 114, and the upper cover 112 is installed from the lower portion of the first housing 110 to the upper direction, that is, from the lower cover 114 to the upper cover 112. A magnetic field can be formed in the direction. The magnetic field generator 120 may include a permanent magnet, and such a permanent magnet may be disposed such that the N pole faces the upper cover 115.

The rotation frame 130 may have four side surfaces, and may be disposed in the first housing 110 such that at least one of the four side surfaces faces the transmission surface 111. The front and rear of the rotating frame 130 may be formed in a rectangular parallelepiped shape consisting of four open sides, and the four sides may actually form a closed surface, but the frame structure is used to achieve the mounting surface of the solar panel to be described later. It can be done.

To be more clearly defined, the rotation frame 130 may include first to fourth surfaces 131, 132, 133, and 134. Here, the first side 131 and the second side 132 may face each other, and the third side 133 and the fourth side 134 may face each other, and such a configuration definition may be changed as much as possible. .

The rotation shaft 140 may be disposed across the front surface of the first housing 110, that is, the front cover 115 to the rear surface of the first housing 110, that is, the rear cover 116. However, this rotation shaft 140 penetrates the center of the rotation frame 130, that is, penetrates the front/rear surfaces that do not belong to the first to fourth surfaces 131, 132, 133, 134 and connects with the rotation frame 130. It can be arranged as much as possible. Here, the rotation shaft 140 may be connected to the rotation frame 130 at a portion where the rotation shaft 140 penetrates the rotation frame 130 so that the rotation shaft 140 may be fixed to the rotation frame 130.

The solar panel unit 150 is installed on two side surfaces of the four side surfaces that face each other, and the first solar panel unit 151 installed on one of the two side surfaces and a second side installed on the other side. It may include a solar panel 152. In this case, the first solar panel 151 and the second solar panel 152 may be disposed so as to face opposite polarities to each other as shown in FIG. 3.

The current circulation path part 160 forms a circulation path of the current flowing from the first solar panel 151 or the second solar panel 152 receiving light, and the current circulation path I and the magnetic field generator The rotational power generation unit 100 may be rotated by 120.

To this end, the current circulation path unit 160 may include a circulation coil 161, a first wiring 162 and a second wiring 163.

As shown in FIG. 3, the circulation coil 161 extends from the anode (+) of the first solar panel 151 to form a plurality of current circulation paths in opposite directions respectively perpendicular to the magnetic field (B). After formation, it may be connected to the cathode (-) of the first solar panel 151.

As shown in FIG. 3, the first wiring 162 is connected to the second solar panel 152 at the first connection node N1 between the anode (+) of the first solar panel 151 and the circulation coil 161. You can connect between the negative (-) of ).

As shown in FIG. 3, the second wiring 163 is connected to the second connection node N2 between the negative electrode (-) of the first solar panel 151 and the circulation coil 161 to the second solar panel 152. You can connect between the positive (+) of ).

In the above, the solar panel installed on the first surface 131 and the second surface 132 has been described as an example, but the present embodiment is not limited thereto, and the second surface 133 and the third surface 134 Each solar panel may be installed and changed to be connected between them through the current circulation path unit 160.

In addition, although it has been described above that the rotating frame 130 is a rectangular parallelepiped, it is not limited thereto, and it is possible to change to a polyhedron having six or more sides, and install solar panels on each side and between facing solar panels. It is also possible to obtain a faster rotational force by forming the current circulation path portion 160.

The shaft fixing part 170 is a means for fixing the rotating shaft 140 and may include a first permanent magnet 171 and a second permanent magnet 172.

The first permanent magnet 171 may be installed at one end (front side) and the other end (rear side) of the rotation shaft 140, respectively.

The second permanent magnet 172 is disposed spaced apart from the first permanent magnet 171 at the lower or upper/lower portion of the first permanent magnet 171, and is a first permanent magnet by repulsive force with the first permanent magnet 171 171 can be installed to be magnetically levitated. That is, due to the repulsive force between the first permanent magnet 171 on the rotation shaft 140 and the second permanent magnet 172 installed on the lower cover 114 of the first housing 110, the rotation shaft 141 floats in the air. The front cover 115 supports one side of the magnet, which is slightly shifted, and the support can be maintained. At this time, it is preferable that the rotation shaft 140 is made of aluminum so as not to be affected by magnetism.

The power generation unit 200 may convert mechanical energy transmitted according to the rotational operation of the rotation shaft 140 into electrical energy and output it.

To this end, the power generation unit 200 may include at least one of the second housing 210, the DC generator 220, the inverter 230, and the time switch 240.

The second housing 210 may be formed of a rectangular parallelepiped having an open surface, and the open surface may be coupled to the rear cover 116 of the first housing 110.

The DC generator 220 may include a field 221 that is connected to the rotation shaft 140 and rotates, and an armature 222 positioned inside the field 221, and the field 221 connected to the rotation shaft 140 ) May generate electric energy by flowing current through the armature 222.

The inverter 230 may convert electrical energy (direct current) generated through the direct current generator 220 into an alternating current and output it. In this case, the output object may be the power plant 30 or a load or battery that requires power.

When turned on, the time switch 240 supplies external power, that is, the power of the power plant 30 to the armature 222 of the DC generator 220, and connects the rotation shaft 140 through the field 221 of the DC generator 220. It rotates, but can be turned off automatically after a preset time. Since the time switch 240 slowly starts to rotate by the weight of the solar panel unit 150 when the rotation power generating unit 100 is initially driven, a direct current generator is used to facilitate the initial driving of the rotation shaft 140. 200 may provide the rotational force to the rotation shaft 140 only for a preset time (about 3 seconds), and by this initial driving, the rotational power generation unit 100 may obtain an initial driving force and start rotation.

Meanwhile, in the present embodiment, an inverter switch 231 connected between the inverter 230 and the armature 222 of the DC generator 220 may be further included. The inverter switch 231 is configured to be turned on when the time switch 240 is turned off, so that power can be transmitted from the armature 222 of the DC generator 220 to the small inverter 230. That is, the inverter switch 231 may operate complementarily with the time switch 230. For example, in the initial driving of the small motor generator 1000, the time switch 230 is turned on and then turned on after a preset time. When off, the inverter switch 231 is driven to be turned on, so that DC power generated by the DC generator 220 may be delivered to the inverter 230.

Hereinafter, an operation method of the small motor generator 1000 according to an embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

First, referring to FIG. 4, when the first solar panel 151 facing the sun or the lighting 10 through the transmission surface 111 receives light and current flows in a certain direction along the circulation coil 161, Due to the magnetic field (B) in the vertical direction generated from the magnetic field generator 120, the first and second solar panels 151 and the second solar panel 152, in which the conductors are tied according to Lorentz's law, are in different directions. Each force can be applied in different positions. More specifically, as shown in FIG. 4, points A1 and A2 of the circulating coil 161 have the directions of the current I in opposite directions, and the magnetic field B is each current I from the bottom to the top. Since it is orthogonal to the direction of ), the direction of the force (F1) generated at point A1 and the force (F2) generated at point A2 are opposite to each other according to Flaming's left-hand rule. At this time, since the point A1 is located above the point A2, the solar panel 150 can rotate about half a turn around the rotation shaft 140 by each force (F1, F2) as shown in FIG. I can. Thereafter, as shown in FIG. 6, the directions of the currents I at the points A1 and A2 of the circulating coil 161 are opposite to each other, and the magnetic field B is Since it is orthogonal to the direction, according to Flaming's left-hand rule, the direction of the force generated at point A1 (F1) and the force generated at point A2 (F2) are opposite to each other, and point A1 is located above point A2. Therefore, the solar panel 150 rotates about half a turn around the rotation shaft 140 by each force (F1, F2) as shown in FIG. 7, so that the solar panel 150 continuously rotates. You can do it.

According to the commutator rectification method, which is the driving principle of a DC motor, the polarity of the + and-powers through a brush must be changed every half a revolution to continuously rotate in the direction of rotation. Accordingly, in the present embodiment, the first solar panel 151 generates current by light shining only from one side, and the second solar panel 152 located on the opposite side from which light is not shining does not generate current. Accordingly, the polarity is changed every half turn, so that the first and second solar panels 151 and 152 themselves serve as brushes, and the rotation can be continued without a separate brush device.

Meanwhile, the rotation speed of the supported solar panel may be determined according to the number of times the circulating coil is wound (l: length of the conductor) and the strength of the magnetic field generator 120 (B: magnetic flux density). In addition, the field 221 and the armature 222 of the power generating unit 200 also determine the amount of electric current generated according to the strength of the field magnet (B: magnetic flux density) and the number of windings of the armature coil (l: length of the conductor). Therefore, the amount of power generated per square meter generated by the rotational force of the solar panels 151 and 152 may be greater than the amount of power generated per square meter of the solar panels 151 and 152, which are set as fixed values.

As the number of solar panels 151 and 152 installed increases, smoothness of rotation may be added, and a variable voltage and a variable frequency generated by the speed at which the field 221 rotates are converted to a constant voltage of 220V, 60Hz through the inverter 230. , It can transmit power to the KEPCO system at constant frequency.

In order to reduce frictional loss when the solar panels 151 and 152 and the field 221 of the rotational power generating unit 100 of the present embodiment rotate, the interior is sealed in a vacuum state to prevent reduction of rotational force due to air and liquid nitrogen. As described above, a cooling device capable of controlling temperature through a refrigerant of a flow lower than the normal temperature can be installed to prevent an increase in temperature due to current generation.

In the future, when a Perovskite, which is currently being developed so that not only a long wavelength of visible light but also a short wavelength range, is installed, along with the existing polysilicon solar panel that generates only long wavelengths of visible light, rotation speed and power generation The amount of current to be made can be greatly increased.

In general, when installing a lighting device, a lighting device 10 with an appropriate intensity of light is installed for use by the user, but there is no facility to recover it even though there is clearly wasted light around it, so it is emitted from all lighting facilities. Light is emitted as it is and is consumed, but according to the present embodiment, light wasted in the lighting facility can be recovered as electric power.

In addition, the size of the solar panel suitable for the intensity (lux) of the light emitted by the lighting device 10 and the capacity for the amount of power recovery are determined, and several solar panel rotating bodies along the direction of the light emitted from the lighting device. Can be installed to maximize power savings.

In addition, in general, all photovoltaic power generation facilities generate solar power during the daytime when the sun is floating and cannot generate solar power during the night time after the sun goes down, but general lighting equipment can generate solar power at night. Therefore, it can maximize the efficiency of solar power facilities and have a positive effect on the amount of generation of new and renewable energy.

In addition, it is possible to reduce the installation cost of power plants and overcome the difference in power generation due to the height and low angle of the solar panel by changing from the existing stationary solar power generation method, which occupies a large area, to a rotary solar power generation method that does not occupy a large area and is highly efficient This system can be installed on the wing surface of a wind power generator and applied to improve the rotational power. Where direct power is required, it does not convert the AC supplied by KEPCO into DC, and converts the DC power to the DC load. Can be supplied directly.

What has been described above is only one embodiment for implementing a small motor generator using a solar panel according to the present invention, the present invention is not limited to the above embodiment, as claimed in the claims below. Without departing from the gist of the invention, anyone of ordinary skill in the field to which the present invention belongs will have the technical spirit of the present invention to the extent that various changes can be implemented.

1000: small motor generator
100: rotational power generation unit
110: first housing
111: transparent surface
112: top cover
113: side cover
114: lower cover
115: front cover
116: rear cover
120: magnetic field generator
130: rotating frame
131: first page
132: second side
133: page 3
134: page 4
140: rotary shaft
150: solar panel unit
151: first solar panel
152: second solar panel
160: current circulation path part
161: circulation coil
162: first wiring
163: second wiring
170: shaft fixing part
171: first permanent magnet
172 second permanent magnet
200: power generation department
210: second housing
220: DC generator
221: field
222: armature
230: inverter
231: inverter switch
240: time switch
N1: first connection node
N2: second connection node
10: lighting
20: light switch
30: power plant

Claims (5)

Light energy is incident in only one direction, converts it into electrical energy, and forms a circulation path of the current generated by the electrical energy, but current circulation paths are each perpendicular to the magnetic fields acting from the bottom to the top and are opposite to each other A rotational power generator configured to generate a force in opposite directions to each other at a point perpendicular to the magnetic field in each current circulation path to rotate the rotation shaft; And
And a power generation unit for converting mechanical energy transmitted according to the rotational motion of the rotating shaft into electrical energy and outputting it,
The rotational power generation unit,
A housing provided with a transmissive surface through which light is transmitted from the outside of only one side thereof;
A magnetic field generator installed under the housing to form a magnetic field from a lower portion to an upper portion of the housing;
A rotating frame having four side surfaces and disposed in the housing such that at least one of the four side surfaces faces the transmission surface;
A rotation shaft disposed across the rear surface of the housing, passing through a center portion of the rotation frame and connected to the rotation frame;
And a first solar panel installed on one of the four side surfaces and facing each other, and a second solar panel installed on the other side, wherein the first solar light A solar panel unit in which the panel and the second solar panel are arranged to face opposite polarities to each other; And
A circulation coil extending from the anode of the first solar panel to form a plurality of current circulation paths in opposite directions respectively orthogonal to the magnetic field, and then connected to the cathode of the first solar panel, the first solar light A first wiring connecting between the anode of the second solar panel and the cathode of the second solar panel at the first connection node between the anode of the panel and the circulation coil, and the second connection node between the cathode of the first solar panel and the circulation coil. 2 Small motor generator using a solar panel, characterized in that it comprises a current circulation path portion including a second wiring connecting between the anodes of the solar panel.
delete The method of claim 1,
Further comprising a shaft fixing portion for fixing the rotation shaft,
The shaft fixing part,
A first permanent magnet installed at one end and the other end of the rotation shaft, respectively; And
Including a plurality of second permanent magnets disposed below or above/below of the first permanent magnet to be spaced apart from the first permanent magnet, and installed so that the first permanent magnet is magnetically levitated by a repulsive force with the first permanent magnet. Small motor generator using a solar panel, characterized in that.
The method of claim 1,
The power generation unit,
A direct current generator comprising a field connected to the rotation shaft and rotating and an armature positioned inside the field, and generating electric energy through the armature according to the rotation of the field; And
Small motor generator using a solar panel, characterized in that it comprises an inverter for converting the electrical energy generated through the DC generator into AC and outputting.
The method of claim 4,
The power generation unit,
A time switch that supplies external power to the armature of the DC generator when turned on to rotate the rotary shaft through a field of the DC generator, and turns off automatically after a preset time; And
A small motor generator using a solar panel, characterized in that it further comprises an inverter switch that is driven to be turned on when the time switch is turned off to transfer power from the armature of the DC generator to the inverter.

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