Three-phase voltage regulator is an adjustable autotransformer, also known as a thyristor power regulator or simply power regulator. It can be used as a stepless voltage regulation device to drive the three-phase load. Here's a breakdown of the three-phase regulator:
1.Principles of work
The three-phase stabilizer works by connecting the power supply to a four-layer, three-terminal semiconductor device (such as a thyristor or thyristor) between the load and is equipped with a corresponding trigger control circuit board to regulate the voltage, current and power of the load. The output voltage can be precisely controlled by changing the trigger angle and delay angle of the thyristor switch.
2.Structural features
The three-phase stabilizer consists of three single-phase stabilizers stacked on top of each other, using a star-shaped connection method, and the brushes share the same shaft. The sliders of each phase voltage regulator are fixed to the same rotating shaft. When the sliding block position is changed by rotating the handle, the three-phase output voltage can be adjusted simultaneously to ensure the symmetry of the output voltage.
3.Main functions and applications
Voltage regulation: Three-phase voltage regulator is mainly used for AC power regulation of large industrial electrical equipment. Control the voltage and current of the output load circuit by adjusting the input voltage.
Heating power adjustment: In an electric heating device, a three-phase voltage regulator can be used to regulate heating power. It can be "manual" or combined with an electric regulator, intelligent regulating instruments, PLC or computer control system to achieve constant or programmed control of the heating temperature.
Saving energy and reducing consumption: by adjusting input voltage, the three-phase voltage regulator can meet the expected power requirements, thus avoiding unnecessary waste of power resources.
Variable frequency speed regulation: by controlling the power supply voltage to control the motor speed, can achieve the on-line control and optimization of electrical equipment, which is particularly important in some precision machining scenarios.
4. Technical advantages
Precise control: the three-phase voltage regulator can control voltage, current and power accurately, thus achieving accurate temperature control.
Efficient energy saving: advanced digital control algorithms has been adopted to improve the efficiency of electricity use, and has played a positive role in energy saving.
There are two kinds of control modes: phase-shifting trigger and zero-over trigger, which can be easily switched by switching the switch selection.
Multi-channel control signal inputs: Supports multi-channel control signal inputs such as switch contacts, current signals (e.g. DC4-20mA and DC0-10mA), voltage signals (e.g. DC1-5V and DC0-10V).
Suitable for a variety of loads: for a variety of loads, such as constant resistance loads, variable resistance loads and inductive loads (such as the main end of a transformer).
Safe and reliable: has perfect self-inspection function and complete fault protection functions, guarantees safe and stable operation. output ports adopts photoelectric isolation technology, strong anti-jamming capability.
Powerful communication function: Supports standard Modbus RTU communication protocol for easy online network control.
