PQvar is a new approach to power factor correction and load balancing. The modular design and compact structure make it the ideal solution for active stepless PFC and load balancing in industrial applications and commercial buildings. Compared to conventional PFC systems, PQvar offers a response time of less than 15 ms and a dynamic reaction time of less than 50 µs. It can compensate both inductive and capacitive loads and achieve a power factor of 0.99.

By means of the Advanced Multi Controller (AMC), PQvar can be combined with conventional passive LV-compensation stages. The MV-level is covered by systems for 6 kV, 10 kV and 35 kV, with outputs of between 2000 kvar and 12,000 kvar. All modules are available for 3-phase grids with or without neutral conductors. Depending on customer requirements for output and size, the modules are designed as slide-in units for control cabinets, as wall-mounted units for LV-systems or as control cabinets for MV-systems.

The 3P3W (three phase three wire) PQvar can balance load currents between phases, the 3P4W (three phase four wire) type may additionally reduce neutral conductor currents. Therefore, PQvar is perfect solution at applications having reactive power requirements along with unbalanced loads, which is the case at e.g electricity distribution lines in rural areas, or different industrial applications.

Using the Advanced Multi Controller (AMC), the PQvar system can be combined with conventional passive low-voltage compensation stages.