Dynamic voltage restorer

Are you still worried about voltage dips, surges or brief power outages?

It is difficult to avoid faults in modern power grids, and the anti-interference ability of common electrical loads is fragile, leading to an urgent increase in the demand for high-precision and high-reliability power supply. Voltage sags, swells and short-term power outages are common problems in power systems, especially for precision equipment and critical loads, which may lead to production interruptions, data loss and even equipment damage.

Dynamic Voltage Restorer (DVR) is designed to solve these problems. It can monitor the grid voltage in real time, respond quickly when an abnormality is detected, and ensure that the load end voltage is always stable by quickly injecting or absorbing compensation voltage. DVR has dozens of levels of speed response and is widely used in highly sensitive scenes such as industrial production lines and data centers to effectively prevent the impact of voltage fluctuations.

What is a Dynamic Voltage Restorer (DVR)?

Dynamic Voltage Restorer (DVR) is a power electronic device specially used to compensate for power quality problems such as grid voltage sag, sudden rise, short-term power outage and other power quality problems. It can respond quickly within milliseconds to ensure the stability of the voltage at sensitive load terminals and avoid equipment loss, data loss or damage that may be caused at any time.

How a Dynamic Voltage Restorer (DVR) Works

• Real-time monitoring: DVR continuously monitors the grid voltage and immediately activates the compensation mechanism when an abnormality (such as voltage dip, surge) is detected.
• Fast compensation: Inject or absorb side compensation voltage into the system through the power converter to keep the load side voltage stable.
• Isolation protection: When the power grid has a short-term power outage or a serious fault occurs, the DVR can switch to the backup power supply or take isolation measures to ensure continuous power supply for important equipment. Dynamic voltage restorer (DVR) technical features.

Technical features

• Efficient operation and quick response
  

     Low energy consumption, operating efficiency of 99.2%, fast response speed, full response time less than 2ms

• Long life and maintenance-free

     Long life, design life is more than 20 years

     Maintenance-free, simple topology, extremely low failure rate, and no wearing parts

• High reliability, multiple redundancy design

     Strong reliability, control power supply adopts AC and DC power supply

     Multiple redundant backup design, bypass drive control circuit multiple redundant backup

• Powerful overload capability
  

• Green operation, no harmonic pollution
  

   It is green and environmentally friendly, will not cause harmonic pollution to the power grid, and is simple to operate.

Selection table and technical parameters

Advantages and Disadvantages of Dynamic Voltage Restorers

• Quick response, quick compensation for voltage dips, swells, and short interruptions.
• Sensitive safeguard loads to prevent equipment damage and damage.
• It has strong power consumption and is suitable for industrial, data center, medical and other scenarios.
• Highly efficient and energy-saving, small footprint and easy to install.

• Time compensation is limited and long-term power outages cannot be achieved.
• Backup dependency, limited by battery or oversized capacity.
• Higher costs, increased investment and maintenance expenses.
• Problems such as frequency fluctuations and harmonics cannot be solved.