Control circuits for compressor motors including multiple capacitors
Abstract:
A compressor assembly includes a compressor motor having a main winding coupled with a line terminal to receive power from a line voltage source, and an auxiliary winding. The assembly includes first and second capacitors each coupled between the line terminal and the auxiliary winding, a first relay to selectively couple the first capacitor and the second capacitor in parallel, a second relay coupled to selectively inhibit the supply of power from the line voltage source to the auxiliary winding via the first capacitor, and a control circuit configured to close the first relay in response detection of excess load condition criteria, and to subsequently open the first relay in response to detection of normal load condition criteria. The excess load condition criteria and the normal load condition criteria each include at least one of a voltage of the main winding and a voltage of the auxiliary winding.
Information query
Patent Agency Ranking
0/0