阅读说明：本技术 双压逆变发电机 (Double-voltage inverter generator ) 是由 朱小祥 龚治俊 于 2020-07-25 设计创作，主要内容包括：本发明公开了一种双压逆变发电机,包括交流输出端子、内燃发动机以及带动其旋转发电的发电机本体,所述发电机本体连接有逆变控制模块,所述逆变控制模块包括控制模块(1)、第一逆变桥(11)和第二逆变桥(12),所述控制模块的输出端分别与第一逆变桥(11)和第二逆变桥(12)电连接,所述控制模块(1)用于控制两个逆变桥同时输出同频同相的交流电压,所述第一逆变桥(11)和第二逆变桥(12)的输出端与切换开关电连接,所述第一逆变桥(11)和第二逆变桥(12)均与输出端子电连接。本发明设有两个逆变桥,并由切换开关控制两路交流电压并联输出或串联输出,且输出功率不变,控制便捷,降低了成本,提高了使用可靠性。(The invention discloses a double-voltage inverter generator which comprises an alternating current output terminal, an internal combustion engine and a generator body driving the generator body to rotate for generating electricity, wherein the generator body is connected with an inverter control module, the inverter control module comprises a control module (1), a first inverter bridge (11) and a second inverter bridge (12), the output end of the control module is electrically connected with the first inverter bridge (11) and the second inverter bridge (12) respectively, the control module (1) is used for controlling the two inverter bridges to simultaneously output alternating current voltages with the same frequency and phase, the output ends of the first inverter bridge (11) and the second inverter bridge (12) are electrically connected with a selector switch, and the first inverter bridge (11) and the second inverter bridge (12) are electrically connected with the output terminal. The invention is provided with two inverter bridges, and the two paths of alternating voltages are controlled by the selector switch to be output in parallel or output in series, and the output power is not changed, the control is convenient and fast, the cost is reduced, and the use reliability is improved.)

1. The utility model provides a two contravariant generators that press, includes AC output terminal, internal combustion engine and drives its rotatory generator body that generates electricity, its characterized in that: the generator body is connected with an inversion control module, the inversion control module comprises a control module (1), a first inversion bridge (11) and a second inversion bridge (12), the output end of the generator body is used for outputting power for the control module (1), the first inversion bridge (11) and the second inversion bridge (12), the output end of the control module is electrically connected with the first inversion bridge (11) and the second inversion bridge (12), the control module (1) is used for controlling the two inversion bridges to simultaneously output alternating-current voltages with same frequency and phase, the output ends of the first inversion bridge (11) and the second inversion bridge (12) are electrically connected with a change-over switch, and the first inversion bridge (11) and the second inversion bridge (12) are electrically connected with output terminals; when the change-over switch is positioned at a first connection position, the output terminal outputs a first voltage; when the switch is in the second connection position, the output terminal outputs a second voltage.

2. The dual voltage inverter generator according to claim 1, wherein: the output end of the first inverter bridge (11) comprises a first output end and a second output end, and the output end of the second inverter bridge (12) comprises a third output end and a fourth output end; the first output end, the second output end, the third output end and the fourth output end are respectively and electrically connected with the corresponding connection points of the change-over switch.

3. The dual voltage inverter generator according to claim 2, wherein: the change over switch is double-pole double-throw switch, is equipped with first tie point, second tie point, third tie point, fourth tie point, fifth tie point and sixth tie point, first output is connected with first tie point electricity, the second output is connected with the second tie point electricity, and the second tie point is connected with the fourth tie point electricity, the third output is connected with the third tie point electricity, the fourth output is connected first output fourth output with the sixth tie point.

4. The dual voltage inverter generator according to claim 1, wherein: the control module (1) is a single-chip microcontroller.

5. The dual voltage inverter generator according to claim 2, wherein: the output voltage and power of the first inverter bridge (11) and the second inverter bridge (12) are the same.

6. The dual voltage inverter generator according to claim 1, wherein: the output terminals include a first output terminal (N) and a second output terminal (L).

Technical Field

The invention relates to the technical field of generators, in particular to a double-voltage inverter generator.

Background

In a power supply system, two types of single-phase 120V and 240V standard voltages are available, a plurality of double-voltage output fuel generator sets are generally needed, and especially the conversion between the two types of standard voltages is needed.

Disclosure of Invention

The invention aims to provide a double-voltage inverter generator which can improve the circuit conversion reliability and has a simple structure.

The technical scheme of the invention is as follows:

a double-voltage inverter generator comprises an alternating current output terminal, an internal combustion engine and a generator body driving the generator body to rotate for generating electricity, wherein the generator body is connected with an inverter control module, the inverter control module comprises a control module, a first inverter bridge and a second inverter bridge, the output end of the generator body is used for outputting power for the control module, the first inverter bridge and the second inverter bridge, the output end of the control module is respectively and electrically connected with the first inverter bridge and the second inverter bridge, the control module is used for controlling the two inverter bridges to simultaneously output alternating current voltages with the same frequency and phase, the output ends of the first inverter bridge and the second inverter bridge are electrically connected with a change-over switch, and the first inverter bridge and the second inverter bridge are both electrically connected with the output terminal; when the change-over switch is positioned at a first connection position, the output terminal outputs a first voltage; when the switch is in the second connection position, the output terminal outputs a second voltage.

Further, the output end of the first inverter bridge comprises a first output end and a second output end, and the output end of the second inverter bridge comprises a third output end and a fourth output end; the first output end, the second output end, the third output end and the fourth output end are respectively and electrically connected with the corresponding connection points of the change-over switch.

Further, the change-over switch is double-pole double-throw switch, is equipped with first tie point, second tie point, third tie point, fourth tie point, fifth tie point and sixth tie point, first output is connected with first tie point electricity, the second output is connected with the second tie point electricity, and the second tie point is connected with the fourth tie point electricity, the third output is connected with the third tie point electricity, the fourth output is connected first output fourth output with the sixth tie point.

Further, the control module is a single-chip microcontroller.

Further, the output voltage and power of the first inverter bridge and the second inverter bridge are the same.

Further, the output terminals include a first output terminal (N) and a second output terminal (L).

Has the advantages that: the invention is provided with two inverter bridges, and the two paths of alternating voltages are controlled by the selector switch to be output in parallel or output in series, and the output power is not changed, the control is convenient and fast, the cost is reduced, and the use reliability is improved.

Drawings

Fig. 1 is a schematic diagram of a parallel circuit of a preferred embodiment of a dual voltage inverter generator according to the present invention.

Fig. 2 is a schematic diagram of a series circuit of a preferred embodiment of a dual voltage inverter generator according to the present invention.

Fig. 3 is a voltage diagram of inverter bridges connected in parallel.

Fig. 4 is a voltage diagram of inverter bridges connected in series.

Detailed Description

The invention will be further explained with reference to the drawings.

As shown in fig. 1, 2, 3 and 4, the preferred embodiment of the dual voltage inverter generator according to the present invention includes an internal combustion engine, a generator, an inverter control module and a change-over switch; the internal combustion engine drives the generator to generate electricity.

The generator is connected with the inversion control module, the inversion control module comprises a control module 1, a first inversion bridge 11 and a second inversion bridge 12, the output end of the generator is connected with the control module 1 and used for supplying power to the control module 1, the first inversion bridge 11 and the second inversion bridge 12, the output end of the control module 1 is respectively electrically connected with the first inversion bridge 11 and the second inversion bridge 12, the control module 1 is used for controlling the two inversion bridges to simultaneously output alternating-current voltages with the same frequency and phase, and the output ends of the first inversion bridge 11 and the second inversion bridge 12 are electrically connected with the change-over switch. In this embodiment, the control module 1 is a microcontroller of a single chip microcomputer.

In this embodiment, the PWM signals output to the first inverter bridge 11 and the second inverter bridge 12 by the control module 1 make the output voltages and powers of the first inverter bridge 11 and the second inverter bridge 12 equal to each other

The output end of the first inverter bridge 11 comprises a first output end and a second output end, the output end of the second inverter bridge 12 comprises a third output end and a fourth output end, the change-over switch is a double-pole double-throw switch and is provided with a first connection point, a second connection point, a third connection point, a fourth connection point, a fifth connection point, a sixth connection point, a first throwing knife and a second throwing knife, the first output end of the first inverter bridge 11 is electrically connected with the first connection point, the second output end of the first inverter bridge 11 is electrically connected with the second connection point, the second connection point is electrically connected with the fourth connection point, the third output end of the second inverter bridge 12 is electrically connected with the third connection point, the fourth output end of the second inverter bridge 12 is connected with the sixth connection point, and the fifth connection point is vacant. The fixed end of the first throwing knife is connected with the third connecting point, and the two movable ends are used for being connected with the first connecting point or the second connecting point. The fixed end of the second throwing knife is connected with the sixth connecting point, and the two movable ends are used for being connected with the fourth connecting point or the fifth connecting point.

When the diverter switch is in a first communicating position, i.e. the moving end of the first throwing blade is connected to the first connection point and the moving end of the second throwing blade is connected to the fourth connection point, the output terminal outputs a first voltage; the output terminal outputs a second voltage when the diverter switch is in a second communication position, i.e., the moving end of the first throwing blade is connected to the second connection point and the moving end of the second throwing blade is connected to the fifth connection point. Specifically, the output terminal includes a first end N and a second end L.

The use method of the preferred embodiment of the double-voltage inverter generator provided by the invention comprises the following steps:

as shown in fig. 1 and 3, when the double pole double throw switch is pushed toward one end, the throwing blade connected to the third connection point is connected to the first connection point, and the throwing blade connected to the sixth connection point is connected to the fourth connection point, in addition, the first output end of the first inverter bridge 11 is electrically connected to the first connection point, the second output end of the first inverter bridge 11 is electrically connected to the second connection point, the second connection point is electrically connected to the fourth connection point, the third output end of the second inverter bridge 12 is electrically connected with the third connection point, the fourth output end of the second inverter bridge 12 is connected with the sixth connection point, the first inverter bridge 11 and the second inverter bridge 12 form a parallel connection circuit, the output voltage is unchanged, the output current is doubled, as shown in fig. 3, after the two inverter bridges are connected in parallel, the output voltage waveform is unchanged, but the load current is doubled, and the output power is the sum of the two inverter bridges.

As shown in fig. 2 and 4, when the double pole double throw switch is pushed toward the other end, the throw blade connected to the third connection point is disconnected from the first connection point and connected to the second connection point, and at the same time, the throw blade connected to the sixth connection point is disconnected from the fourth connection point and connected to the fifth connection point, and the rest of the throw blades are electrically connected to the first output terminal of the first inverter bridge 11 and the first terminal N, the fourth output terminal of the second inverter bridge 12 and the second terminal L, the second output terminal of the first inverter bridge 11 and the second connection point, the third output terminal of the second inverter bridge 12 and the third connection point, and the first inverter bridge 11 and the second inverter bridge 12 form a series connection circuit, so that the output current is constant and the output voltage is doubled; as shown in fig. 4, the output voltage waveform is doubled after series connection, but the load current is unchanged and the output power is still the sum of the two inverter bridges.

The two groups of inverter bridges are electrically connected with the same control module 1, and automatically generate completely in-phase control waveforms without phase-locked control, so that the circuit structure is simple, the reliability is improved, and the cost is reduced.

The undescribed parts of the present invention are consistent with the prior art, and are not described herein.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures made by using the contents of the present specification and the drawings can be directly or indirectly applied to other related technical fields, and are within the scope of the present invention.