What are the characteristics of static voltage stabilizers?
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What are the characteristics of static voltage stabilizers?

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What is static voltage stabilizer? What is the working principle of static voltage stabilizer? What is the difference between static voltage stabilizer and servo voltage regulator?

  • What is static voltage stabilizer?

  • How does the static voltage stabilizer work?

  • What is the difference between static voltage stabilizer and servo voltage regulator?

static voltage stabilizer

What is static voltage stabilizer?


It is a voltage correction device based on electronic circuit. Unlike the servo motor unit, the static voltage stabilizer has no moving motor to stabilize the output voltage. It corrects the voltage by changing the primary voltage of the step-boost transformer connected to the IGBT power bridge output. And the IGBT bridge can generate the required voltage at its output through PWM method. Compared with servo system, static voltage stabilizer has many advantages.


How does the static voltage stabilizer work?

The static stabilizer consists of lifting voltage transformer, IGBT power module and processing circuit. The processing circuit continuously receives feedback on the input voltage, output voltage, and IGBT current. If the input voltage exceeds the requirement, the processing unit triggers the IGBT module to generate an inverting voltage compared to the input voltage. As a result, the voltage between the step-down and step-up transformer secondary ends is reduced. Similarly, when there is a low voltage at the input, the IGBT module generates an in-phase voltage to compensate the voltage.


What is the difference between static voltage stabilizer and servo voltage regulator?

1. The servo stabilizer will stabilize the voltage by increasing or decreasing the number of windings in transmission. It has a direct effect on the output voltage of the transformer. In other words, the reliability of the servo transformer varies with the reliability of the servo motor. Similarly, the reliability of static transformers varies with IGBT power levels. Based on this mechanism, you can expect a higher level of reliability from static voltage stabilizers.

2. You don't see any moving parts in the static regulator. In other words, you can find an electronic circuit in the static stabilizer. Therefore, you can expect it to deliver faster results through voltage stabilization. In other words, the calibration time of the static regulator is short. It is usually about 20 to 30 milliseconds. You can also expect them to offer high voltage correction speeds of around 350 V/ SEC to 500 V/ SEC.

3. The performance profile of the servo stabilizer is not so impressive. They have moving parts, which slows down overall operation. You can expect a voltage correction speed of about 100 V/ SEC from the servo stabilizer. Again, the correction time may take approximately 50 milliseconds to 4 seconds.

4. The main function of voltage regulator is to regulate output voltage fluctuation. However, it should also be able to provide short circuit protection. Inside the static regulator, you can find a DSP control board. It continues to measure the input voltage as well as the output voltage. If a short circuit occurs, the load current will increase significantly. The output will then be cut off and switched from the IGBT power level. It will happen immediately. Therefore, you can be sure that there will be no damage caused by short circuit.

5. However, you do not see this short-circuit protection mechanism built into the servo-based voltage regulator. If you want short circuit protection, you will have to consider investing in additional hardware, such as MCCB and CB. This will help you troubleshoot efficiently.

6. The servo stabilizer operates with the help of the motor. The electricity will wear out over time. Therefore, you must perform regular maintenance to ensure normal operation. You do not need to perform such regular maintenance when using a static voltage stabilizer. There are no moving parts in the static voltage stabilizer.

If you are looking for a supplier of static voltage stabilizer with good quality and reasonable price, Zhejiang TTN Electric Co., Ltd. is a very good choice.

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