The AC regulated power supply is also called an AC voltage regulator. With the development of electronic technology, especially after the application of electronic computer technology to various industries and scientific research fields, various electronic devices require stable AC power supply, and direct power supply to the power grid cannot meet the needs. The emergence of AC stabilized power supply has solved this problem. A problem. Commonly used AC regulated power supplies are:
1 Ferromagnetic resonant AC voltage regulator. It consists of a saturated choke and a corresponding capacitor with constant voltage volt-ampere characteristics.
2 magnetic amplifier type AC voltage regulator. The magnetic amplifier and the autotransformer are connected in series, and the impedance of the magnetic amplifier is changed by an electronic circuit to stabilize the output voltage.
3 sliding AC voltage regulator. Stabilize the output voltage by changing the position of the sliding contact of the transformer.
4 inductive AC voltage regulator. The output AC voltage is stabilized by changing the phase difference between the transformer and the primary voltage.
5 thyristor AC voltage regulator. A thyristor is used as the power adjustment component. High stability, fast response and no noise. However, it causes interference to communication equipment and electronic equipment. After the 1980s, there were three new types of AC regulated power supplies: compensating AC voltage regulators. Numerically controlled and stepped AC voltage regulators. Purified AC voltage regulator. It has good isolation to eliminate spikes from the grid.
Numerical control power supply: It is to sample at the output of the equipment through the observation area, compare and check the current voltage and the rated voltage. If the comparison is negative, send the data to the central processing unit (CPU), and the voltage is added by the central processing unit. The command. At the same time, the detection area detects whether the semiconductor has been turned on or off. After confirmation, the central processor makes a voltage plus command to control the semiconductor operation to reach the rated voltage standard. If it is positive, the central processor makes a voltage decrement command, and the entire process is digitized in just 0.048 seconds.
The device stabilizes the voltage that changes instantaneously through the digital control loop to ensure that the output voltage is always the rated voltage.
A digital power regulator (DIGITAL TAPCHANGING METHOD) that monitors voltage changes using a digital control principle and adjusts the TAP of the transformer through an electronic gate switch to maintain a stable output voltage.
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