Schakelpatroon

Schakelpatroon is a Dutch term meaning a pattern or sequence of switching events in a system. It refers to the timing, order, and duration of transitions between different states, usually involving on/off changes or different control levels. The concept is used across technical disciplines to describe how a device or process switches between configurations over time.

In power electronics and electrical engineering, schakelpatroon describes the sequence of switching actions of semiconductor switches in converters, inverters, or motor drives. The pattern determines the shape of the output, efficiency, heat generation, and electromagnetic interference. Common concerns include choosing between unipolar or bipolar switching, and modulation schemes such as pulse-width modulation or space-vector modulation. The pattern also affects switching losses and the need for dead time to prevent cross-conduction.

In digital electronics and control systems, the term can refer to the sequence of state changes in a state machine or control logic driven by a clock. Here the schakelpatroon defines how the system progresses from one state to another, often with the aim of producing a desired output or behavior under timing constraints.

In practice, a schakelpatroon is specified by the order of states, the timing of transitions, and, if applicable, the duty cycle or repetition period. It is often illustrated with timing diagrams or described by equations or state tables.

See also: PWM, space-vector modulation, switching loss, timing diagram, state machine.