PFC Cokes for use in active reactive power compensation circuit
Electronic devices such as switch-mode power supplies, welding equipment, electronic ballasts for lighting equipment and electronic motor control units obtain short current pulses or non-sinusoidal current flow patterns from the mains. A large number of these devices would cause a burden on the supply mains. Rules concerning the limitation of the harmonic content of the power supply are necessary in order to solve this problem. In higher-output devices, these legal requirements can only be implemented by means of an active PFC circuit.
- Core materials
- PQ cores
- Various E-core variants
- Technical Data
- Inductance: ca. 20.0 ... 3.000 µH
- Current: ca. 0.3 ... 30.0 A
- Power: ca. 50.0 ... 5.000 W
- Functional principle
An additional boost controller is installed upstream the actual power supply. This converter provides a sinusoidal current flow pattern on the power supply input. Step-up converters are actuated in discontinuous mode in the lower 75.0 to 150.0 W sector. At higher outputs, the step-up converter technology is set to continuous mode.