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Intelligent boost conversion device having long lifetime

A technology of step-up conversion and long life, which is applied in the direction of output power conversion device, conversion of AC power input to AC power output, conversion of AC power input to DC power output, etc. Product life and other issues

Inactive Publication Date: 2017-03-15
GUANGDONG BESTEK E COMMERCE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the voltage output by this boost conversion device is a correction wave, which will cause great damage to electrical equipment, and most of them are filtered by aluminum electrolytic capacitors inside, which seriously affects the life of the product and reduces the safety and reliability of the product.
At the same time, the volume of this boost conversion device is large, which is not conducive to carrying
In addition, the PF value of the existing boost conversion device is too low, which is easy to cause interference to the power grid

Method used

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  • Intelligent boost conversion device having long lifetime
  • Intelligent boost conversion device having long lifetime
  • Intelligent boost conversion device having long lifetime

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Embodiment Construction

[0018] The present invention will be described in more detail below in conjunction with the accompanying drawings and embodiments.

[0019] The invention discloses a long-life intelligent boost conversion device, which combines Figure 1 to Figure 3 As shown, it includes a high-frequency modulation unit 30, an inductance filter unit 40 and an inverter and phase inverting unit 50, wherein:

[0020] The high-frequency modulation unit 30 includes an energy storage inductor L2, a first switch tube Q7, and a freewheeling diode D24. The front end of the energy storage inductor L2 is used to access direct current, and the rear end of the energy storage inductor L2 is connected to The drain of the first switching tube Q7, the drain of the first switching tube Q7 is connected to the anode of the freewheeling diode D24, the source of the first switching tube Q7 is grounded, and the gate of the first switching tube Q7 Used to access PWM pulse signal;

[0021] The inductance filter unit...

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Abstract

The invention discloses an intelligent boost conversion device having long lifetime. The intelligent boost conversion device comprises a high-frequency modulation unit, an induction filter unit and an inversion reverse phase unit, wherein the high-frequency modulation unit comprises an energy storage inductor and a first switching tube, a rear end of the energy storage inductor is connected with a drain of the first switching tube and a positive electrode of a freewheeling diode, a source of the first switching tube is connected with the ground, a grid of the first switching tube is used for accessing a PWM pulse signal, the induction filter unit comprises a filter inductor, a front end of the filter inductor is connected with a negative electrode of the freewheeling diode, a rear end of the filter inductor is connected with the inversion reverse phase unit, and the inversion reverse phase unit is used for converting a DC pulse voltage output from the rear end of the filter inductor to a sine AC voltage. By the intelligent boost conversion device, an electrolytic capacitor is not needed, the service lifetime can be prolonged, a PF value of a product is improved, the intelligent boost conversion device is convenient to carry, and moreover, the interference on a power grid can be prevented.

Description

technical field [0001] The invention relates to a voltage converter, in particular to a long-life intelligent boost conversion device without an electrolytic capacitor. Background technique [0002] The sine wave boost conversion device, also known as a boost travel plug, is a sine wave AC / AC converter that can boost voltage and stabilize voltage and frequency during AC / AC conversion. At present, most of the AC / AC portable equipment market is a modified wave output. The boost circuit is first adjusted to DC, then filtered with an aluminum electrolytic capacitor, then boosted, and finally inverted. However, most of the voltage output by this boost conversion device is a correction wave, which causes great damage to electrical equipment, and most of them are filtered by aluminum electrolytic capacitors inside, which seriously affects the life of the product and reduces the safety and reliability of the product. At the same time, the boost conversion device has a large volume,...

Claims

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Application Information

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IPC IPC(8): H02M5/458
CPCH02M5/458H02M1/126H02M1/007H02M7/53878
Inventor 廖志刚
Owner GUANGDONG BESTEK E COMMERCE CO LTD
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