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The DMS-AVC dynamic voltage regulation device uses power electronics technology. When the system voltage suddenly drops, the AVC device can quickly adjust the voltage, ensure that the output voltage is seamlessly connected to the rated value, and solve power quality problems caused by voltage dips.

The DMS-AVC device is mainly composed of fast switches, bidirectional converters, and energy storage units. The working principle in case of voltage sag/rise/interruption in the power grid is as follows:
? When the system operates normally, the fast switch is in the closed state, and the load is powered by the power grid;
? When voltage sag/sag/interruption occurs in the system, the device can detect a fault at 500 sampling points per cycle, at 100us, and send instructions to the fast switch and bidirectional converter;
? The fast switch quickly disconnects after receiving a command, and the load is disconnected from the power grid;
? After receiving the command, the bidirectional converter establishes a rated output voltage of 200us and starts to supply power to the load, ensuring that the load is powered by the bidirectional converter after the fast switch is turned off;
? The entire compensation process of the DMS-AVC device is less than 2ms, and there is no impact on the load and power grid during the startup and shutdown processes;

The system voltage is within the limit: the load is powered by the grid.

When a system voltage sag occurs: the fast switch is disconnected, the load is disconnected from the power grid, and the AVC device directly supplies power.
The system voltage is restored to within the limit range: the fast switch is closed, the inverter is turned off, the load is powered by the system again, and the equipment rectifier circuit is used to charge and store energy for the capacitor.

1. High system efficiency and fast response
Efficiency ＞ 99%, device full response time ＜ 2ms

2. Support deep sag governance
Single-phase, two-phase, and three-phase drops to 0% can be controlled

3. High reliability, suitable for industrial loads
Multilevel protection, redundant design, maintenance-free

3. Excellent parallel expansion function and modular design
Support multi-module parallel operation, easy to install and expand

4. Full digital control technology based on DSP
Adopt 32-bit DSP and reliable algorithms to achieve product performance.