Warrenson WRS-DVR Series Dynamic Voltage Restorer for Mitigating Voltage Sags in Frequency Converters

The WRS-DVR series dynamic voltage restorer, connected in series between the power supply and the protected load, is suitable for applications where voltage experiences temporary or transient changes due to system faults, large impact load start-stop operations, nonlinear loads, lightning strikes, and other reasons. Utilizing ultra-grade capacitors as energy storage components and IGBTs as high-frequency switching elements, it generates a compensation voltage injected into the system during voltage sags or swells, ensuring the load-side voltage remains within acceptable limits.
Features:
Multiple levels of protection at the device, unit, and system levels ensure higher reliability; in case of DVR failure, it can switch to bypass within 1ms;
Simplified working circuitry, with a footprint significantly smaller than that of a UPS of equivalent capacity;
Operating efficiency of over 99%, response time ≤3ms, enabling rapid compensation for voltage anomalies;
Advanced floating-point algorithm DSP digital signal processor ensures fast, effective, and wide-ranging algorithm and signal processing;
Modular and compact design of power units (ultra-grade capacitors + IGBTs) offers higher power density and easier scalability;
Large-size TFT display provides a user-friendly interface and simple operation.

Technical Parameters
No-Load Mode    DVR inactive               
Output Mode   Vioad>VPcc or VIoad< VPCC, DVR active, outputting positive or negative compensation voltage waveforms
Bypass Mode     DVB failure, bypass switch activates to switch to bypass mode operation