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A method of controlling a compressor in a transport temperature control unit having a prime mover providing power to the compressor. The compressor has a power requirement that varies depending on loading conditions. The method includes determining the maximum power available from the prime mover, d

A method of controlling a compressor in a transport temperature control unit having a prime mover providing power to the compressor. The compressor has a power requirement that varies depending on loading conditions. The method includes determining the maximum power available from the prime mover, determining the power requirement of the compressor, and adjusting the loading conditions of the compressor so that the power requirement of the compressor substantially equals the maximum power available from the prime mover. Preferably, the method includes starting the compressor at a low speed, varying the suction pressure as permitted by the maximum amount of power available until the suction pressure reaches a maximum suction pressure setting, and after the suction pressure reaches a maximum suction pressure setting, increasing the speed of the compressor as permitted by the maximum-amount of power available.

대표청구항 ▼

1. A method of controlling a compressor in a transport temperature control unit, the temperature control unit having a prime mover providing power to the compressor, and the compressor having a power requirement that varies depending on loading conditions of the compressor, the method comprising:det

1. A method of controlling a compressor in a transport temperature control unit, the temperature control unit having a prime mover providing power to the compressor, and the compressor having a power requirement that varies depending on loading conditions of the compressor, the method comprising:determining the maximum power available from the prime mover; determining the power requirement of the compressor; and adjusting the loading conditions of the compressor so that the power requirement of the compressor substantially equals the maximum power available from the prime mover; wherein adjusting the loading conditions of the compressor includes at least one of (a) while operating the compressor at a low speed setting, varying a suction pressure setting as permitted by the maximum amount of power available to run the compressor until the suction pressure setting reaches a maximum suction pressure setting, and only after the suction pressure setting reaches a maximum suction pressure setting, increasing the speed of the compressor as permitted by the maximum amount of power available to run the compressor; and (b) while operating the compressor at a maximum suction pressure setting, varying a compressor speed setting as required by the maximum amount of power available to run the compressor until the compressor speed setting reaches a minimum speed setting, and only after the compressor speed setting reaches the minimum speed setting, reducing the suction pressure setting as required by the maximum amount of power available to run the compressor.