ELECTROMECHANICAL POWER TRANSMISSION CHAIN FOR A WORKING MACHINE

摘要

An electromechanical power transmission chain comprises an electrical machine (101) connectable to a combustion engine and to a mechanical load, a storage circuit (104) for storing electrical energy, an electronic power converter (109) for transferring electrical energy between the storage circuit and the electrical machine, and a control system (110) for controlling the combustion engine and the electronic power converter. The control system controls the electronic power converter to transfer electrical energy from the storage circuit to the electrical machine in response to a peak-load situation where power demand of the mechanical load is above an advantageous power range of the combustion engine. The control system limits the fuel supply of the combustion engine during the peak-load situation so as to restrain the fuel consumption from increasing due to the peak-load situation.

主权项

1. An electromechanical power transmission chain comprising:
an electrical machine having a rotor for being in a torque transfer connection with a shaft of a combustion engine and with a mechanical load to be driven, operational efficiency of the combustion engine being better when power produced by the combustion engine is on a pre-determined power range than when the power produced by the combustion engine is above the predetermined power range, a storage circuit for storing electrical energy, an electronic power converter for transferring electrical energy between the storage circuit and the electrical machine, and a control system for controlling the combustion engine and the electronic power converter,wherein the control system is configured to control the electronic power converter to transfer electrical energy from the storage circuit to the electrical machine in response to a peak-load situation in which power demand of the mechanical load is above the pre-determined power range so as to keep the power produced by the combustion engine on the pre-determined power range, and wherein the control system is configured to limit fuel supply of the combustion engine during the peak-load situation so as to restrain fuel consumption of the combustion engine from increasing in response to the peak-load situation.