Thermal overload transfer apparatus

A method for thermal protection of a load, the method comprising:

• comparing, using a control unit, a temperature of a first silicon-controlled rectifier (SCR) to a first threshold and a second threshold, wherein the first SCR is coupled to a load configured to draw power from a first power source through the first SCR;
• generating a first warning in response to the temperature of the first SCR exceeding a first threshold but not exceeding a second threshold;
• decoupling, using the first SCR, power provided from the first power source to the load and coupling a second power source to provide power to the load via a second SCR in response to the temperature of the first SCR exceeding the second threshold;
• and
• comparing, using the control unit, a temperature of the second SCR to the first and second thresholds.

A thermal management system comprising:

• a first silicon-controlled rectifier (SCR) configured to provide power from a first power source to an electrical load;
• a second SCR configured to provide power from a second power source to the electrical load;
• a heat sink coupled to and configured to remove heat from the first SCR and the second SCR;
• and
• a control unit configured to:
• control the first SCR and the second SCR such that the first SCR conveys power from the first power source to the electrical load and the second SCR blocks power from the electrical load;
• receive temperature values from first and second temperature sensors coupled to the first and second SCRs, respectively;
• compare a first temperature value received from the first temperature sensor to a first threshold and a second threshold;
• generate a first warning in response to the first temperature value exceeding the first threshold but not exceeding the second threshold;
• and
• perform a first switchover operation in response to the first temperature value exceeding the second threshold, wherein subsequent to performing the first switchover operation, first SCR blocks power from the first power source to the electrical load and the second SCR conveys power from the electrical load.