Closed brayton cycle power generation system with compressor discharge fluid driven cooling flow for cooling electrical hardware

A power-generation system comprising:

• an electrical system including a motor-generator and a power conditioning and distribution system connected with the motor-generator, the motor-generator operable in a power generation mode to produce electrical energy and a motor mode to convert electrical energy into rotational power,
• a turbine engine including a compressor configured to receive a working fluid and compress the working fluid to provide a compressed working fluid, a reactor heat-exchanger downstream of the compressor that transfers heat from a nuclear reactor to the compressed working fluid to provide a heated working fluid, a turbine downstream of the reactor heat-exchanger and configured to extract work from the heated working fluid for driving the compressor and the motor-generator, and a cooling heat-exchanger downstream of the turbine to transfer heat away from the heated working fluid to provide a cooled working fluid, and
• a cooling system that uses the cooled working fluid to cool the electrical system, the cooling system including a pump that moves the cooled working fluid from the cooling heat-exchanger to the electrical system to transfer heat from at least one of the motor-generator and the power conditioning and distribution system to the cooled working fluid,
• wherein the pump is fluidly connected with the compressor and driven by the compressed working fluid to increase a pressure of the cooled working fluid received by the pump.