Comparison of different types of voltage regulators

Comparison of advantages and disadvantages of voltage regulators:
1. Compensatory AC voltage stabilizer
(1) SBW (DBW) series compensating power stabilizer (column type).
Advantages: Large capacity; efficient; Wide voltage regulation range; High precision and stepless adjustment; Strong protection function: It has multiple protection functions such as phase sequence loss, overvoltage, undervoltage, overload, overcurrent, short circuit, etc; Strong load adaptability: used for resistive, capacitive, inductive, and nonlinear loads; Capable of withstanding overload impact; Input and output in phase without waveform distortion; At the same time, it also has multiple advantages such as mature technology, low failure rate, high reliability, and low price.
At present, this type of voltage regulator has the largest number of manufacturers, the highest production volume, and the highest market share.
Disadvantages: Equipped with mechanical devices, there is noise during operation; The adjustment time is long (about 1 second).
(2) SBW (DBW) series compensating power regulator (rotary) - SVC series.
Advantages: High efficiency; Wide voltage regulation range and can be made into asymmetric structures; High precision and stepless adjustment;
Strong protection function: It has multiple protection functions such as overvoltage, undervoltage, overload, overcurrent, short circuit, etc; Strong load adaptability: can be used for resistive, capacitive, inductive, and nonlinear loads; Input and output in phase without waveform distortion; Mature technology, low failure rate, high reliability, and lower cost (compared to column type).
At present, there are many manufacturers of this type of voltage regulator, with large production volume and high market share.
Disadvantages: Equipped with mechanical devices, there is noise during operation; The adjustment time is long (about 1 second); Poor ability to withstand overload impact and only suitable for small and medium-sized capacities; The failure rate is higher than that of column type.
2. Contactless compensation AC voltage regulator (thyristor AC voltage regulator)
Advantages: Fast response, no noise; efficient; Wide voltage regulation range; Strong protection function: It has multiple protection functions such as phase sequence loss, overvoltage, undervoltage, overload, overcurrent, short circuit, etc; Strong load adaptability; Capable of withstanding overload impact; Input and output are in phase and the waveform is basically undistorted; Mature technology, low failure rate, high reliability, and the ability to achieve intelligent functions   
Disadvantages: Low precision, non adjustable precision; Due to being a switch type voltage regulator, there are voltage jumps and additional phase shifts; The maintenance technology is difficult and the price is high.
3. Electronic parameter AC voltage regulator, also known as purification AC voltage regulator or sine energy distribution AC voltage regulator
Advantages: Fast response, no noise, known as synchronous response; High precision; Protection function: It has protection functions such as overvoltage, undervoltage, overload, overcurrent, short circuit, etc; Power on soft start has no output voltage overshoot and excellent peak surge suppression capability.
Disadvantages: Narrow voltage regulation range; There is significant waveform distortion and additional phase shift; Low power factor; Poor load characteristics: There are specific requirements for load properties, load connections, three-phase load balance, etc.