How does harmonic distortion affect inverters?

Harmonic distortion refers to the presence of frequencies in an electrical signal that are multiples of the fundamental frequency, which can disrupt the clean sine wave output expected from inverters. This distortion can lead to several issues in electrical systems, particularly concerning the operation of Ground Fault Circuit Interrupter (GFCI) devices.

GFCI devices are designed to detect imbalances between the incoming and outgoing current to prevent electric shock. When harmonic distortion is present, it can create false readings or imbalances in the current, leading these protective devices to trip unnecessarily or fail to trip when there is an actual fault. This malfunction compromises safety, which is a critical aspect of any electrical system installation, especially in marine applications where the risks are heightened.

Recognizing that harmonic distortion can negatively influence both the functionality of GFCI devices and the overall safety of the electrical system underscores the importance of managing harmonics in inverter systems.