CN201185396Y

CN201185396Y - Inverter circuit capable of outputting multiple output voltages

Info

Publication number: CN201185396Y
Application number: CNU200820101700XU
Authority: CN
Inventors: 黄敬党
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-03-24
Filing date: 2008-03-24
Publication date: 2009-01-21
Anticipated expiration: 2018-03-24

Abstract

The utility model belongs to an inverter circuit, in particular to an inverter circuit capable of outputting a wide range of voltages. The inverter circuit of the utility model is capable of outputting a wide range of voltages and comprises at least two single-output voltage inverter circuits, which consist of a power circuit, a converter circuit and an output filter circuit. The key technical proposal is that the inverter circuit is formed through arranging at least two single-output voltage inverter circuits in series. The utility model has the advantage of creatively arranging the inverter circuits in series, thus outputting a wide range of voltages as well as reducing the withstand voltage of a power transistor in the inverter circuits.

Description

The inverter circuit of exportable multiple voltage

Technical field

The utility model belongs to inverter circuit, especially belongs to the inverter circuit of exportable multiple voltage.

Background technology

Existing inverter circuit as shown in Figure 1, form by power circuit 1, convertor circuit 2, output filter circuit 3, has only a kind of voltage output, exchange today widely at world's commodity, because country variant line voltage difference, two kinds of 110V and 220V are arranged usually, and single voltage output makes that electrical equipment (especially portable alternating current generator) can't be general.

Summary of the invention

The utility model purpose is to overcome above-mentioned shortcoming, and the inverter circuit that a kind of exportable multiple voltage is provided is to satisfy country variant city electric standard, and reaching electrical equipment can free accessible use.

The technical scheme that the utility model adopted is a kind of inverter circuit of exportable multiple voltage, comprise single output voltage inverter circuit of forming by power circuit, convertor circuit, output filter circuit, its main points are, it is that inverter circuit by single output voltage more than two is in series.

Operation principle of the present utility model is: the inverter circuit of single output voltage more than two is connected, as long as the voltage of the inverter circuit of single output voltage that assurance is all output is with the frequency homophase, just can obtain different magnitudes of voltage, to reach the purpose of multiple voltage output from different output interfaces.

Commonly used is the inverter circuit series connection of two single output voltages.It has three interfaces, when two inverter circuit output voltage values are identical, the output of 2 independent voltage U and a 2U can be arranged, and can therefore satisfy the requirement of existing 110V in the world and two kinds of different voltages of 220V; When two inverter circuit magnitudes of voltage not simultaneously, three different voltages outputs of voltage U 1, U2 and U1+U2 can be arranged.

Power transistor in the convertor circuit is IGBT, or is GTO, or is MOSFET, or is controllable silicon.

Advantage of the present utility model is creatively inverter circuit to be connected, thereby obtains multiple voltage output, has also reduced the withstand voltage of power transistor in the inverter circuit simultaneously.

Description of drawings

Fig. 1 is existing inverter circuit principle schematic

Fig. 2 is a principle schematic of the present utility model

Fig. 3 is the principle schematic of the utility model embodiment 2

Fig. 4 is the principle schematic of the utility model embodiment 3

Fig. 5 is the principle schematic of the utility model embodiment 4

Wherein: 1 power circuit, 2 convertor circuits, 3 output filter circuits

Embodiment

Below in conjunction with view the utility model is described in detail

Embodiment 1, as shown in Figure 2, the conventional inversion circuit is made up of power circuit 1, convertor circuit 2, output filter circuit 3, a kind of inverter circuit of exportable multiple voltage, it is to be in series by a plurality of above-mentioned said existing inverter circuits, and convertor circuit 2 is a bridge architecture.A plurality of inverter circuits are output as with identical frequency, can provide different voltage from its different output termination.Power transistor in the convertor circuit 2 is IGBT, or is GTO, or is MOSFET, or is controllable silicon.

Embodiment 2, as shown in Figure 3, a kind of inverter circuit of exportable multiple voltage, it is to be in series by two existing inverter circuits that are output as with identical frequency, when two inverter circuit magnitudes of voltage are identical, the output of 2 independent voltage U and a 2U can be arranged, can therefore satisfy the requirement of existing 110V in the world and two kinds of different voltages of 220V; When two inverter circuit magnitudes of voltage not simultaneously, three different voltages outputs of voltage U 1, U2 and U1+U2 can be arranged.It is identical with last example wherein not state part.

Embodiment 3, as shown in Figure 4, a kind of inverter circuit of exportable multiple voltage, it is to be in series by two conventional inversion circuit, and wherein convertor circuit 2 is a half-bridge structure, and it is identical with last example wherein not state part.

Embodiment 4, as shown in Figure 5, a kind of inverter circuit of exportable multiple voltage, it is to be in series by three conventional inversion circuit, when the inverter circuit magnitude of voltage was identical, it was U, 2U, three kinds of different voltage outputs of 3U that magnitude of voltage can be arranged; When the inverter circuit magnitude of voltage not simultaneously, it is U1, U2, U3, U1+U2, U2+U3 and six kinds of different voltages outputs of U1+U2+U3 that magnitude of voltage can be arranged.It is identical with embodiment 1 not state part.

Claims

1, a kind of inverter circuit of exportable multiple voltage, comprise single output voltage inverter circuit of forming by power circuit (1), convertor circuit (2), output filter circuit (3), it is characterized in that it is that inverter circuit by single output voltage more than two is in series.

2, the inverter circuit of exportable multiple voltage according to claim 1 is characterized in that, it is that inverter circuit by two single output voltages is in series.

3, the inverter circuit of exportable multiple voltage according to claim 1 is characterized in that, it is that inverter circuit by three single output voltages is in series.

4, the inverter circuit with exportable multiple voltage according to claim 1 is characterized in that, the power transistor in the convertor circuit (2) is IGBT, or is GTO, or is MOSFET, or is controllable silicon.

5, the inverter circuit with exportable multiple voltage according to claim 1 is characterized in that, convertor circuit (2) is a bridge architecture, or is half-bridge structure.