Power supply apparatus of CT shelter system

A computerized tomography (CT) shelter system, comprising:

• a shelter body comprising a plurality of rooms;
• a CT apparatus disposed in a first room from among the plurality of rooms;
• an air conditioning apparatus disposed in the first room;
• and
• a power supply apparatus disposed in a second room from among the plurality of rooms, the power supply apparatus comprising:
• a battery configured to store electrical energy;
• a power converter configured to (i) convert first alternating-current (AC) power into direct-current (DC) power to charge the battery during operation of the CT apparatus in non-exposure stages in which the CT apparatus operates in accordance with a first level of power consumption, and (ii) convert the DC power stored in the battery to second AC power that is supplied to the CT apparatus during operation of the CT apparatus in an exposure stage in which the CT apparatus operates in accordance with a second level of power consumption,
• wherein the first level of power consumption is less than the second level of power consumption,
• wherein the first AC power comprises single-phase power, and the second AC power comprises three-phase power, a voltage that is identified with the first AC power being lower than a voltage identified with the second AC power;
• a generator configured to generate the first AC power, which is supplied to the power converter and to the air conditioning apparatus;
• an external power source interface configured to connect to an external power source;
• and
• a dual power switch connected to the external power source interface, the generator, the power converter, and the air conditioning apparatus,
• wherein the dual power switch is configured (i) to allow the external power source interface, the power converter, and the air conditioning apparatus to be powered on when the external power source interface is connected to the external power source, and (ii) to allow the generator, the power converter, and the air conditioning apparatus to be powered on when the external power source interface is disconnected from the external power source.