Design of an Input Filter for the Six-Pulse Bridge Rectifier

The design of an input filter for the six-pulse bridge rectifier is discussed. For industrial applications of mid-range power, two types of input filter are examined. It is shown that these filters with minimum number of components can meet most operational requirements if designed properly. The variation of performance factors with filter type and parameters are discussed. As the ultimate decision in selecting the filter components depends on the type of application, the design guidelines are described. The materials for custom designing of the filter are included. The features and advantages of each type of filter are outlined. For comparison purposes, several design examples are also included.