外文翻译--高频开关电源介绍

The Introduction Of

High Frequency Switching Power Supply

Introduction:

High frequency switching power supply (also called switch rectifier SMR) through the MOSFET or the high frequency IGBT, switch frequency control in 50-100 KHZ, within the scope of efficient and realize miniaturization. In recent years, switch rectifier power capacity expansion, the capacity of himself, from the volt 48V/12.5A、48V/20A to48V/200A、48V/400A。

High frequency switching power supply is traditional rectifier (silicon rectifier, silicon-controlled rectifier) upgrade alternative products. High frequency switching power supply with convenient use, small size, high efficiency, stable work, coating meticulous etc absolute superiority quickly dominate the market. Widely used in electroplating electrolysis surface treatment industry oxidation and get old and new customers.

Product features:

一．This product USES imported brand components and international advanced bridge in precision machining technology of inverter, and make the performance is stable, the quality is reliable.

二．For high-frequency pulse waveforms output ripple coefficient, the 1%, can improve the number of plating and surface aestivation, refuse the gloss and got a dark corner of plating. And can reduce the loss, raw materials of plating industry of special requirements.

三．SFG series high frequency switching power supply by air-filled type design, installation convenience. With remote control device, easy for operation. Can bring load switch machine, reduce the adjustment of the complex procedures.

四. Small volume light weight the comprehensive use of anticorrosive craft,

enhance the ability of anti-corrosion products, prolong the life.

五. Energy saving, high working efficiency reached more than 90%, any more than a linear always voltage matching. Save the traditional rectifier regulator and the energy loss, in more than 35%, greatly reduce the cost, the reason of surface treatment industry

High frequency switching power supply

一．The main circuit

From the input and output of dc exchange network, including:

1．The whole the effect is input filter: there will be the clutter power filter, also hindered the feedback to produce clutter of public power.

2．And rectification and filtering: ac power grid directly to a smooth dc rectification, in order to the next level.

3．Inverter: after rectifying dc into high frequency alternating, this is the core part of switch power supply, the higher the frequency volume, and weight and output power than smaller.

4．And output rectifier and filtering: according to provide reliable, load of the dc power supply.

Second control circuit：On one hand, the sample from the output terminal with setting standards, and then compared to control the inverter, change the frequency or pulse width, achieve output stability, on the other hand, according to the test circuit, the information provided by differential protection circuit, control circuit of various protection measures.

Third detection circuit：In addition to providing protection circuit is running in the various parameters but also provide various display meter data.

Four, the auxiliary power

To provide all the different requirements of a circuit switching voltage control principle

Switch to certain time interval K repeatedly through and disconnect the switch, the power input, K E through switch and filter circuits provide load RL, throughout the