How to Choose Medium & High Voltage VFD for Mining Industry

mining medium voltage drive

Anyone who has worked on mining retrofits knows how tricky it is to pick the right medium & high voltage VFD for mining industry. Many project teams simply match the motor power and order general-purpose medium voltage drives, only to face constant tripping, overheating and unexpected shutdowns once the unit goes underground. Mining sites do…

VFD Daily Troubleshooting

VFD Troubleshooting

Variable Frequency Drives (VFDs) serve as the core equipment of modern industrial automation, widely deployed in mining, power generation, water treatment, petrochemical, and metallurgical industries. Whether it is standard low-voltage inverters or heavy-duty medium-voltage VFDs, long-term continuous operation, harsh industrial site conditions, and non-standard operating habits will inevitably trigger various minor faults and frequent tripping…

Medium Voltage Drive Selection Guide

Medium Voltage Drive

Selecting a suitable medium voltage drive (MV VFD) is one of the most critical decisions for modern heavy industrial renovation and new project construction. Unlike low-voltage variable frequency drives used for general machinery, medium voltage drives operate at 2.3kV to 13.8kV, supporting high-power equipment from hundreds of kilowatts to tens of megawatts. They are widely…

Three-level Inverter Working Principle

three-level VFD

A three-level inverter is also known as a Neutral Point Clamped (NPC) inverter. It acts as the core power conversion unit for modern medium and high-voltage VFD systems. Traditional two-level inverters only output two voltage states. In contrast, standard three-level inverters produce three stable levels: +VDC/2, 0, and -VDC/2. This unique structure delivers better power…