Advantages and working principle of contactless voltage regulator

Contactless voltage regulator is an electric auxiliary device with no mechanical moving parts, maintenance-free, no mechanical failure, fast voltage stabilization speed, high precision, strong applicability and comprehensive protection function. It is an electric energy auxiliary device that can convert fluctuating and unstable voltage into stable voltage output. The products are widely used in industrial and mining enterprises, textile machinery, printing and packaging, petrochemical industry, schools, shopping malls, elevators, post and telecommunications, medical machinery and other occasions that require normal voltage and electrical voltage.

Contactless voltage regulator composition:

Contactless voltage regulator output voltage regulation circuit, DSP microcomputer processing center, control circuit and thyristor drive circuit. When the input voltage or load changes, the control circuit samples, compares and amplifies, and then closes the thyristor drive circuit to make the thyristor change the opening and closing of the voltage regulator coil turns, and automatically adjusts the coil and the ratio, thereby maintaining the stability of the output voltage. The contactless voltage regulator has high-quality core accessories, a large voltage stabilization range, a voltage stabilization speed of up to 0.03s, and a voltage stabilization accuracy of ±1%. Three-phase regulation, no mechanical structure in the entire voltage stabilization process, no contact points, no vulnerable parts inside, maintenance-free. Long service life.

The contactless voltage stabilizer has five major protection functions: overload protection, undervoltage protection, overvoltage protection, overtemperature protection, delay protection, AV LCD display, visible input and output voltage, accurate data, high sensitivity, and durable.

Advantages of contactless voltage stabilizer:

1. Intelligent instrument display: digital display system (display voltage and current), clear, accurate, high resolution, membrane button operation, safe and reliable (while the brushless voltage stabilizer is only a pointer meter indication, not clear and accurate. And can only indicate voltage and current).
2. The contactless voltage stabilizer adopts zero-crossing switching technology to output voltage without riding change: there is no interruption during the switching process, no surge current is generated, and the waveform is not distorted. The isolation transformer used by the contactless voltage stabilizer is an isolation compensation transformer, that is, the main circuit and the compensation circuit are isolated.
3. Three-phase regulation: Each phase voltage is independently regulated without affecting each other, and the voltage regulation accuracy is as high as ±1%. And each item can set the output voltage separately according to the load requirements. If the output voltage value of each phase is set to the same, the three-phase output voltage imbalance is less than 1% (while the voltage regulation accuracy of the brush type voltage regulator is poor, which is +2% to ±5%, and each phase cannot be independently regulated. When the input voltage is unbalanced, the output is also unbalanced. Printing machine, CNC lathe, computer gong, wire cutting machine, etc.).
4. High-speed response: When the input voltage fluctuates greatly and frequently, due to the voltage regulation speed of 25 milliseconds, the output voltage can always be maintained at the voltage regulation value set by the user, and no voltage change will be affected on any production equipment and instruments. There will be no overvoltage or undervoltage bypass phenomenon, so there is no need to have a function that automatically returns to the voltage stabilization state after the voltage is normal.
5. The contactless voltage stabilizer adopts a delayed start-up setting: when encountering a power outage or restarting, the contactless voltage stabilizer adopts a delayed output setting to avoid the start-up voltage shock from damaging the load equipment
6. The contactless cigarette lighter voltage stabilizer has super overload capacity: it can be used continuously under 100% rated load conditions, and can withstand 10 times the current in 10 milliseconds and 3 times the current in 1 minute without damaging the device
7. Safe and reliable: The contactless voltage stabilizer is equipped with overload, overvoltage, undervoltage, phase loss, short circuit, overheating protection, lightning protection and fault diagnosis functions, which can protect the load in 5 seconds (but the carbon brush type voltage stabilizer does not have these functions, which is prone to burning the load machine and causing fires). 8. High efficiency, energy saving and environmental protection: The efficiency of the contactless voltage regulator reaches more than 99%, the size is small, it is easy to transport, and it does not take up much space when placed (while the carbon brush voltage regulator has low efficiency, only 96%~98%, which is not energy-saving and environmentally friendly. It is large in size and weight, inconvenient to transport, and occupies a large area when placed).

Working principle of contactless voltage regulator:

The contactless voltage regulator uses a DSP microcomputer control calculation center to calculate the input voltage, output voltage and rated output voltage, and then sends the voltage difference to the thyristor control circuit, which then uses the signal to open and close the controllable circuit in the circuit. Then adjust the required voltage. Compared with the contactless voltage regulator, the contactless voltage regulator connects different voltage taps in the transformer coil and then connects them to the thyristor circuit in the voltage treatment, while the contact voltage regulator changes the position of the carbon brush head on the transformer to change the voltage and stabilize the output voltage.

Classification of contactless voltage stabilizers:

Contactless voltage stabilizers can be divided into three-phase voltage stabilizers and single-phase voltage stabilizers according to the conventional number of phases:

Because contactless voltage stabilizers are more flexible in power, ranging from 1KVA to 6000KVA or even higher power, contactless voltage stabilizers cannot be classified in terms of power. Classification by voltage regulation range: In conventional production, contactless voltage stabilizer manufacturers have a voltage regulation range of +15% or 20%. In order to adapt to some power consumption environments with large voltage fluctuations, kilohertz contactless voltage stabilizers can be classified in terms of voltage regulation range of +15%, +20%, +30%, +40%, +50% or higher.