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Unidirectional Voltage Type Inner High Frequency Loop Inverter

Author: Source: Datetime: 2016-09-30 16:30:08
Why use high frequency loop inverter for solar powered portable generator. This inverter is in the DC power supply and frequency (or intermediate frequency) between the inverter by adding high-frequency electrical isolation DC converter, the use of high-frequency transformer voltage and electrical isolation, replacing the volume of the weight of the frequency transformer, reducing the noise. It consists of high-frequency inverter, high-frequency (energy storage) transformers, high-frequency rectifier, PWM frequency inverter for solar power generator, and input and output filters. The pre-DC converter stage converts the DC input voltage into a smooth DC voltage required for the post-stage, and the AC inverter is inversely converted to AC by the post-PWM inverter. The characteristics of this inverter is only one-way flow of power, three power conversion, conversion efficiency is low. But its technology is mature, widely used.

Bidirectional Voltage Type High Frequency Ring Inverter

A bidirectional voltage type inner high frequency loop inverter is a circuit structure of a bidirectional voltage type inner high frequency loop inverter based on a forward converter, and is composed of a high frequency inverter, a high frequency transformer, a cycloconverter and an input and output filter, Bi-directional power flow, two-stage power conversion, conversion efficiency and high reliability. However, this inverter has the inherent drawback that the control of the output voltage of the cycloconverter to use the traditional PWM technology caused by the inevitable voltage overshoot.
Unidirectional Voltage Type Inner High Frequency Loop Inverter
Current - type high - frequency bad in the reverse device

Current type high frequency loop inverter circuit structure based on Flyback converter and single circuit single direction, single pipe bidirectional and Jinqiao bidirectional three kinds of main circuits. This inverter consists of high-frequency inverter, high-frequency (energy storage) transformer, cycloconverter and input and output filters. Its characteristics are simple circuit, two-stage power conversion, high efficiency, reliability, switching current stress, small capacity. On this basis, it was proposed and analyzed the push-pull bi-directional current-type high-frequency loop inverter.Solar powered portable generator use high frequency loop inverter has many advantage.

DC converter type high frequency loop inverter

From another point of view was put forward DC converter type high-frequency ring inverter in the new concept. It consists of high-frequency inverter, high-frequency (energy storage) transformers, high-frequency rectifier, frequency inverter bridge and input and output filter. The output of the front DC converter is half-wave voltage and the load is heavy. The rear inverter works in the frequency square wave inverter and has no output filter. The load is light and the inverter bridge power has low switching frequency and voltage stress. If the pre-DC / DC converter stage is Buck-Boost type, the shell is a voltage-type inner high-frequency loop inverter. If the pre-DC / DC converter is Buck-Boost, it belongs to the current type high frequency loop inverter. Regardless of the type of pre-DC / DC converter, these inverters are voltage-type in-loop high-frequency inverter, and the former level of light work load, heavy work load, control is not the same.In summary, if the future purchase of portable solar power generator, select the high-frequency inverter.

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