Harmonic suppression of ship electric propulsion frequency converter in DC network

In networking DC electric propulsion system, the adjustable speed drive is one of the most critical elements of the entire electric propulsion technology, which directly determines the state of the propulsion motor, however, a large number of inverter switching semiconductor device, will cause The generation of harmonics in the power system. This paper explains the source of frequency converter harmonics and their harm. On this basis, an LRC filter was proposed to suppress the harmonics in the ship's power grid, and simulation research was carried out.