Patent ID: 7878013

Claim:
A refrigeration system for use in a trailer, the trailer refrigeration system comprising: an electricity generator; an electricity-generator engine for driving the electricity generator; a converter for converting ac electric power generated by the electricity generator into dc electric power; a plurality of inverters, each inverter converting dc electric power from the converter into ac electric power; a refrigerant circuit having an electric compressor and a plurality of fans comprising a condenser fan and an evaporator fan, the electric compressor ( 31 ), the condenser fan ( 35 ), and the evaporator fan ( 36 ) being driven respectively by ac electric power from the plurality of inverters; and control means for individually controlling the speed of rotation of the electricity-generator engine, the electric compressor, the condenser fan, and the evaporator fan, the control means including: a refrigeration equipment control part for controlling, based on the storage compartment temperature of the trailer, the output of each inverter to thereby control the speed of rotation of the electric compressor, the condenser fan, and the evaporator fan; and an engine control part for controlling, based on either the input/output state of each inverter or the input/output state of the converter, the speed of rotation of the electricity-generator engine.