A Variable Frequency Drive (VFD) completely eliminates the large starting inrush current of the compressor by ramping up frequency and voltage in a controlled time period. This prevents overload when on limited dockside power or a generator without causing noticeable voltage reductions throughout the rest of the yacht’s electrical system.
Until now, however, a VFD also created harmonic distortion and radio frequency interference (RFI) on the yacht’s electrical and navigation systems, which required additional line filters and conditioners.
Nominated for a DAME Design Award, the bypassable VFD provides the ultimate solution. It eliminates the starting inrush of current, then seamlessly disengages and reconnects the compressor to the main power once it is running at peak, thus eliminating all harmonic distortion and RFI. There is also no need for line filters and conditioners. In addition, it reconnects to the compressor just before compressor shutdown for a smooth stop. It accomplishes this with totally unique capabilities never before available in a marine HVAC system.