To begin with, let's define the most popular types of voltage stabilizers on the market. Then we will compare their characteristics and test them.
The content of the article:
• Relay stabilizer
• Electromechanical stabilizer
• Thyristor stabilizer
Relay stabilizer
The design of a relay-type stabilizer is based on an autotransformer with a sectioned winding. When the input voltage changes, the control board gives a signal to the corresponding relay. As a result, the winding section is connected, making a decrease or increase in the output voltage. A feature of the SUNTEK relay stabilizer is that the electronic voltage unit is a fairly powerful microcontroller, in which the input and output voltages are analyzed and signals are generated to control the stabilizer keys. When forming the control voltage, the microcontroller takes into account the response time of the keys and power relays. This allows switching without interruption. As a result, the shape of the voltage at the output of the relay stabilizer follows the shape at the input. The actuation response is 0.05-0.15 seconds, which is suitable for most modern household appliances. The output voltage error of the relay voltage stabilizer is within 8%, which means that the output power can be 203-237V. This is a reliable stabilizer that can be safely used for domestic needs.
Electromechanical stabilizer
In contrast to a relay-type stabilizer, in an electromechanical stabilizer, the voltage change occurs more smoothly, using a sliding contact.
The principle is that the current-collecting brush, fixed on the axis of the servo motor, moves along the coil, thereby regulating the voltage supply to the output of the stabilizer.
The advantage of this stabilizer is a high accuracy of 3% and smooth voltage regulation. But at the same time, the device has a low performance. In order for it to work normally, there should not be constant large voltage surges in the network, which will reduce the reliability of the stabilizer. You can also notice noise when the roller moves along the winding.
Thyristor stabilizer
The thyristor stabilizer, according to the principle of operation, can be compared with relay devices, but current conversion occurs in the most efficient electronic method, without the use of mechanical components. Semiconductor switches are usually made on thyristors or triacs. Thyristor stabilizers surpass servo control in their characteristics and provide high stabilization accuracy and have a long service life. The stabilization accuracy depends on the number of steps, and usually this figure is up to 3%, which is largely better than that of relay devices. The high regulation speed allows the thyristor stabilizer to be one of the fastest among similar devices. Adding voltage reaches 50 volts within 100ms. Also worth noting is the noiselessness of these devices. However, the reliability and high quality of this type of stabilizer translates into its increased cost.