Do you know the advantages and classification of power adapters

Power adapters are ubiquitous in our lives, especially in the configuration of computers, so do you know what the advantages of power adapters are and what the categories are? Let's follow the YHY manufacturer together to understand it!

Advantages of power adapter

The power adapter is a static frequency conversion power supply composed of power semiconductor components. It is a static frequency conversion technology that converts power frequency (50Hz) to medium frequency (400Hz ~ 200kHz) through the thyristor. It has two conversion modes: AC - DC - AC conversion and AC - AC conversion. Compared with the traditional power generator set, it has the advantages of flexible control mode, large output power, high efficiency, convenient change of operating frequency, low noise, small size, light weight, easy installation, easy operation and maintenance, etc., has been widely used in building materials, metallurgy, national defense, railway, petroleum and other industries. The power adapter has high efficiency and frequency conversion. The main technologies and advantages of modern power adapters are as follows.

First ,the starting mode of modern power adapter adopts the swept-frequency zero-voltage soft starting mode in the form of self-excitation. During the whole starting process, the frequency regulation system and the current and voltage regulation closed-loop system track the load change at all times to achieve the ideal soft starting. This starting mode has little impact on the thyristor and is conducive to prolonging the service life of the thyristor. At the same time, it has the advantages of easy to start with light and heavy load, especially when the steel furnace is full and cold, it can be easily started.

Second ,modern power adapter control circuit using microprocessor constant power control circuit, equipped with inverter Angle automatic adjustment circuit, in the process of operation, at any time automatically monitor the voltage, current, frequency changes, and thus judge the load changes, automatically adjust the load impedance matching, constant power output, so as to save time, save electricity, improve the power factor purpose, Energy saving is obvious, and the grid pollution is small.

Third ,the control circuit of modern power adapter uses CPLD software design, its program input is completed by the computer, pulse precision is high, anti-interference, fast reaction speed, convenient debugging, with intercepting, intercepting voltage, over current, over voltage, under voltage, lack of equal protection functions, because the circuit components always work in the safe range, Thus greatly improve the service life of the power adapter.

Fourth, the modern power adapter can automatically judge the phase sequence of the three-phase incoming line, no need to distinguish A, B, C phase sequence, debugging is very convenient.

Fifth,the circuit board of the modern power adapter is made of automatic wave welding, no virtual welding phenomenon, all kinds of adjustment systems are made of contactless electronic adjustment, no fault point, very low failure rate, very convenient operation.

Classification of power adapters

The power adapter can be divided into current type and voltage type according to the filter used. The current mode adopts DC plane-wave reactor filter to obtain relatively flat DC current. The load current is rectangular wave and the load voltage is similar to sine-wave. Voltage mode adopts capacitor filter, can obtain relatively straight DC voltage, the voltage at both ends of the load is rectangular wave, load power is approximately sine wave.

According to the load resonance mode, the power adapter can be divided into three kinds: parallel resonance, series resonance and series parallel resonance. Current mode is often used in parallel and series-parallel resonant inverters. Voltage type is mostly used in series resonant inverter circuit.