Voltage increase high-frequency link reverser

Abstract

The present invention provides a step-up high-frequency link inverter, the circuit structure is composed of an input filter circuit, a dumping inductor, a high-frequency inverter, a high frequency transformer, a frequency current converter, an output filter circuit cascaded in orders, a high frequency electrical isolation fly-back converter energy feedback circuit composed of the frequency current converter, the high frequency energy storage transformer, the rectifier cascaded in orders is connected between the output load and the input DC power, capable of transforming the unstable DC voltage to the needed stable sinusoidal voltage having high grade, the inverter has advantages of high frequency electrical isolation, high output and input voltage matching ability, double-directional power flow, high transforming efficiency, small volume, light weight, small input current ripple, high load adaptability, lower audio noise, high credibility when the load is shortened, lower cost, large output capacity, wide application, establishing a critical technique for the new type inverter and static inverter having large capacity.

Description

technical field [0001] The boost type high-frequency chain inverter involved in the present invention belongs to the power electronic conversion technology. Background technique [0002] Buck (Forward), Boost (single-ended Boost) and Buck-Boost (Flyback) are the three most basic and commonly used converter types, and their performance is shown in Table 1. Table 1 fully shows that although the Buck (Forward) converter has a large output capacity, it has defects such as large input current ripple and low reliability of the converter when the load is short-circuited; although the Buck-Boost (Flyback) converter has The converter has high reliability, but has defects such as large input current ripple and small output capacity; Boost (single-ended Boost) converter has the advantages of small input current ripple, high reliability when the load is short-circuited, and large output capacity. Buck (Forward) and Buck-Boost (Flyback) converters have large input current fluctuations, ...

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Problems solved by technology

However, people's research on Boost converters is mainly limited to DC-DC conversion (such as "A soft-switching active-clamp scheme for isolated full-bridge boost converter" proposed by En-Sung Park et al., IEEE APEC, 2004, pp .1067~1070.) and AC-DC

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