Time: 2015.

Location: Qiqihar, Heilongjiang.

Reasons for renovation: The original converter single board has a high failure rate, frequently false alarms, poor grid adaptability, expensive spare parts procurement costs and high maintenance costs. Therefore, it is replaced by domestic alternatives.

Renovation scheme: Use Hopewind HW3000 power module for replacement and replace the core control components.

Renovation effect: After replacement, the converter meets the high and low voltage ride-through functions, and the on-site operation is stable and reliable.