Improve power conversion efficiency and power quality of PV system

• Power conversion device for improving power conversion efficiency and power quality

  

  Improved power conversion efficiency (maximum efficiency more than 98%) during a specific period that does not affect power quality during power conversion process

  Discontinuous control algorithm that can significantly reduce the inevitable power loss in semiconductor devices during power conversion

  Harmonic component (6 harmonic control technology) that deepens output power distortion during power conversion process is reduced and power quality of PV system is improved

• Neutral voltage control to improve power quality

  

  As a method to control the unbalance of the input voltage which is inevitably generated during the power conversion process, it improve the quality of power through using the conventional discontinuous control period(neutral voltage control) that moves the control algorithm signal up and down.

Ground Fault Protection for PV Systems

• Integrated configuration of power converter and ground fault detection system

  

  Detects voltage of PV array through voltage divider resistor and amplifier and comparator, and judges whether or not ground fault is occurred in main controller

PV Max monitoring system

• PV Max Central Monitoring Center

  

  A function to check the real-time abnormal status by receiving the abnormality detection signal of each power element through the communication part of the connection panel

  A function to monitor whether there is a fault such as a ground fault or a short circuit, and whether there is an abnormality in each module constituting the PV array string

  A function to check status of power conversion device and failure status in real-time

  Realization of the above function maximizes the power generation through the maximum loss suppression and convenient monitoring and quick maintenance.