Systems and methods for protecting sealed compressor electrical feedthrough

A method of feedthrough protection and overcurrent protection of a sealed compressor used in a transport climate control system (“TCCS”) that provides climate control within a climate controlled space of a transport unit, the TCCS including a climate control circuit with the sealed compressor, the sealed compressor including an outer housing and an electrical motor within the outer housing, the method comprising:

• operating the sealed compressor to compress a working fluid by supplying electrical power to the electric motor of the sealed compressor via a sealed electrical feedthrough in the outer housing of the sealed compressor;
• detecting one or more operating parameters of the sealed electrical feedthrough, which includes detecting a suction pressure of the sealed compressor;
• determining whether the sealed electrical feedthrough is in a melting condition based on the detected one or more operating parameters, which includes comparing the detected suction pressure to a predetermined suction pressure threshold;
• and
• adjusting operation of the climate control circuit upon determining that the sealed electrical feedthrough is in the melting condition until the sealed electrical feedthrough is no longer in the melting condition.

A transport climate control system (TCCS) for providing climate control within a climate controlled space of a transport unit, the TCCS comprising:

• a climate control circuit including:
• a sealed compressor to compress a working fluid, the sealed compressor including an outer housing, an electric motor within the outer housing, and a sealed electrical feedthrough in the outer housing,
• a condenser to cool the working fluid,
• an expansion valve to expand the working fluid, and
• an evaporator to heat the working fluid;
• an electrical power source;
• and
• a climate controller configured to:
• operate the climate control circuit to provide conditioning to the climate controlled space of the transport unit, which includes electrical power being supplied from the electrical power source to the electric motor via the sealed electrical feedthrough,
• detect one or more operating parameter of the sealed electrical feedthrough, which includes detecting an amperage of the electrical power supplied to the sealed electrical feedthrough,
• determine whether the sealed electrical feedthrough is in a melting condition based on the detected one or more operating parameters, which includes comparing the detected amperage of the electrical power to a predetermined amperage draw limit that is based on a minimum amperage that causes melting of a potting of the sealed electrical feedthrough, and
• adjust operation of the climate control circuit when the sealed electrical feedthrough is in the melting condition until the sealed electrical feedthrough is no longer in the melting condition.

A transport climate control system (TCCS) for providing climate control within a climate controlled space of a transport unit, the TCCS comprising:

• a climate control circuit including:
• a sealed compressor to compress a working fluid, the sealed compressor including an outer housing, an electric motor within the outer housing, and a sealed electrical feedthrough in the outer housing,
• a condenser to cool the working fluid,
• an expansion valve to expand the working fluid, and
• an evaporator to heat the working fluid;
• an electrical power source;
• and
• a climate controller configured to:
• operate the climate control circuit to provide conditioning to the climate controlled space of the transport unit, which includes electrical power being supplied from the electrical power source to the electric motor via the sealed electrical feedthrough,
• detect one or more operating parameters of the sealed electrical feedthrough, which includes the climate controller being configured to detect a suction pressure of the sealed compressor,
• determine whether the sealed electrical feedthrough is in a melting condition based on the detected one or more operating parameters, which includes the controller being configured to compare the detected suction pressure to a predetermined suction pressure threshold,
• adjust operation of the climate control circuit when the sealed electrical feedthrough is in the melting condition until the sealed electrical feedthrough is no longer in the melting condition.