Split-phase inverter circuit

Abstract

The invention provides a split-phase inverter circuit. A half-bridge inverter circuit is formed by a first capacitor C1, a second capacitor C2, a first switch tube S1, a third switch tube S3, a L1 anda R1, an output voltage on the load R1 is independently controlled, the first capacitor C1, the second capacitor C2, the first switch tube S2, the fourth switch tube S4, the L2 and the R2 form a half-bridge inverter circuit, an output voltage on the load R2 is independently controlled, different voltages are obtained through voltage division of the split-phase inverter circuit, the load power supply requirements of different voltage systems can be met, the structure is simple, the loss is low, and the efficiency is high.

Description

technical field [0001] The invention relates to the technical field of inverters, in particular to a split-phase inverter circuit. Background technique [0002] At present, there are many kinds of power grid systems in the world, the most common ones are single-phase 220V / 230V, 50HZ, and three-phase 380V / 400V, 50HZ systems. However, there are split-phase systems with a phase difference of 180° in Japan and the United States. The voltage range of this power supply system is generally 120V / 240V, 60HZ (USA), 101 / 202V, 60HZ (Japan). Therefore, electrical equipment in countries such as Japan and the United States also have 120V and 240V power sources at the same time. [0003] The traditional inverter generally has a split-phase transformer, which generates a midpoint through the center tap of the split-phase transformer, and then generates a 120 / 240V split-phase power supply system, but this processing method has low efficiency, large loss, and high cost. Therefore, the presen...

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Problems solved by technology

[0003] The traditional inverter generally has a split-phase transformer, which generates a midpoint through the center tap of the split-phase transformer, and then generates a 120 / 240V split-phase power supply system, but this processing method has low efficiency, large loss, and high cost. Therefore, the present invention provides an inverter topology with split-phase output, which can realize the output of 120 / 240V system voltage without adding a transformer

[0004] The traditional inverter generally has a split-phase transformer, which generates a midpoint through the center tap of the split-phase transformer, and then generates a 120 / 240V split-phase power supply system, but this processing method has low efficiency, large loss, and high cost. Therefore, the present invention provides an inverter topology with split-phase output, which can realize the output of 120 / 240V system voltage without adding a transformer

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