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AC power supply capable of expanding output voltage range

A technology of AC power supply and output terminal, which is applied in the field of power supply, can solve the problems of poor inductive load capacity and inability to fully reflect the output of the AC power supply, and achieve the effect of improving capacity

Active Publication Date: 2018-03-30
ITECH ELECTRONICS NANJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to address the shortcomings of the above-mentioned background technology, provide an AC power supply that can broaden the output voltage range, realize the complete feedback of the output of the AC power supply and eliminate the DC component in the loop, and solve the problem of the existing AC power supply. The power supply cannot completely reflect the output of the whole machine of the AC power supply, and the technical problems of poor inductive load capacity

Method used

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Embodiment Construction

[0022] The technical solution of the invention will be described in detail below in conjunction with the accompanying drawings.

[0023] A voltage-boosting device for an AC power source disclosed in the present invention is as figure 1 As shown, including: AC component sampling transformer, DC component sampling transformer, differential amplifier, error amplifier. One end of the primary winding of the AC component sampling transformer is connected to the live wire output terminal of the secondary side of the main power transformer in the AC power supply, and the other end of the primary winding of the AC component sampling transformer is connected to the neutral output terminal of the secondary side of the main power transformer. The end of the primary winding of the transformer connected to the live wire output terminal of the secondary side of the main power transformer and the end connected to the secondary winding of the AC component sampling transformer and the secondary...

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Abstract

The invention discloses an AC power supply capable of expanding an output voltage range and belongs to the technical field of power supplies. The power supply comprises a main power transformer, an ACcomponent sampling transformer, a DC component sampling transformer, a differential amplifier, a differential integrator and an error amplifier, wherein an AC component and a DC component are superimposed for carrying out output sampling and completely feeding back output of the AC power supply, so that a loop is stable and closed-loop control is achieved; the DC component output by a power amplifier is subjected to sampling and closed-loop control, so that the DC component in the loop is eliminated; the main power transformer is not saturated any more due to the DC component, so that the boost-buck function of the main power transformer is achieved and the inductive load carrying capacity of the AC power supply is improved.

Description

technical field [0001] The invention discloses an AC power supply capable of widening the output voltage range, in particular to a linear AC power supply with a step-up and step-down device capable of widening the output voltage range, and belongs to the technical field of power supplies. Background technique [0002] The AC power supply made in analog mode is output in the way of direct coupling and the output voltage is raised or lowered through the main power transformer, and the maximum output voltage can reach 300V. This AC power supply has the following issues that need to be addressed: [0003] (1) Because the step-up transformer in the power supply boosts the output of the power amplifier, the output of the power amplifier includes both AC components and DC components. The AC component of the power amplifier output causes a certain DC component in the loop of the power supply. The DC component will saturate the main power transformer and cause the main power transfo...

Claims

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Application Information

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IPC IPC(8): H02M5/12
CPCH02M5/12H02M1/0038
Inventor 马海波其他发明人请求不公开姓名
Owner ITECH ELECTRONICS NANJING
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