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Inverter circuit

A technology of inverter circuit and recovery circuit, which is applied to electrical components, regulating electrical variables, high-efficiency power electronic conversion, etc., can solve the problems of inability to achieve clamping, excessive surge voltage applied to the first switching element, etc., to reduce losses Effect

Active Publication Date: 2010-09-29
SANSHA ELECTRIC MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the existence of the above-mentioned leakage inductance, complete clamping cannot be achieved, and there is a problem that an excessive surge voltage is applied to the first switching element

Method used

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Experimental program
Comparison scheme
Effect test

no. 3 approach

[0097] Figure 8 It is a circuit diagram of a DC-DC conversion circuit using a modified current balance push-pull inverter circuit.

[0098] Figure 8 circuit and Figure 6 The circuit differences are described below.

[0099] (A1) used figure 1 The current balance push-pull inverter circuit of the structure shown. That is, instead of the capacitors C1 and C2 serving as voltage sources, the first voltage source V1 and the second voltage source V2 are used.

[0100] In this circuit, it is not necessary to provide a center tap on the primary winding, and it is sufficient that the primary winding is only one winding.

[0101] Next, a fourth embodiment of the present invention will be described.

[0102] Figure 9 It is a circuit diagram of a DC-DC conversion circuit using a modified current balance push-pull inverter circuit.

[0103] Figure 9 circuit and Figure 6 The circuit differences are described below.

[0104] (B1) A power supply V is used instead of the capa...

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PUM

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Abstract

An inverter circuit is provided with first and second switch elements, a first primary coil connected serially between the first and second switch elements, and moreover an output transformer which is provided with a secondary coil for obtaining an output voltage. The inverter circuit is moreover provided with a first voltage source, a second voltage source, and a control part. The first voltage source is connected between the first switch element and a first connecting point where the first primary coil is connected with the second switch element to apply a voltage to the first switch element through the first primary coil. The second voltage source is connected between the second switch element and a second connecting point where the first primary coil is connected with the first switch element to apply a voltage to the second switch element through the first primary coil. The control part alternately turns on / off the first switch element and the second switch element. The inverter circuit is moreover provided with first and second regenerative snubber circuits for regenerating the charge of a snubber capacitor.

Description

technical field [0001] The present invention relates to an inverter circuit (inverter circuit) having a novel structure, which is different from inverter circuits of a full-bridge type or a half-bridge type. Background technique [0002] The well-known inverter circuits are full-bridge inverter circuit, half-bridge inverter circuit, center tap push-pull type inverter circuit (center tap push-pull type inverter circuit). The conceptual diagram of these inverter circuits is shown in Figure 5 shown. [0003] The full bridge type is configured by connecting switching elements S1 to S4 in a bridge manner, and a power supply V is connected between the bridges. Switching elements S1, S4 and switching elements S2, S3 are turned on and off alternately, and an alternating current flows through the primary winding P of the output transformer (see Patent Document 1). [0004] In the half-bridge type, voltage sources C1 and C2 are connected in parallel to switching elements S1 and S2,...

Claims

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Application Information

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IPC IPC(8): H02M7/519H02M3/337
CPCH02M3/3372H02M2001/342H02M1/34Y02B70/1491Y02B70/10H02M1/342H02M7/519
Inventor 藤吉敏一胜岛肇森本健次山村聪史
Owner SANSHA ELECTRIC MFG