Electric drive system of a self-propelled working machine, in particular a mining one, a self-propelled working machine, in particular a mining one, and methof of controlling the energy flow in a self-propelled working machine, in particular a mining one

摘要

The purpose of the notification is the electrical propulsion system of the self-propelled machine, in particular the miner, the self-propelled machine, in particular the miner and the way the energy flow is controlled in the self-propelled machine, in particular the miner. The electrical propulsion system of a self-propelled machine, in particular a mining one, is characterized by the fact that the receivers and the power sources are connected to the main voltage rail (5) through their two-directional energy flow modules (14),each of which is constructed in such a way that it has a first power measurement system, a controlled power regulator, combined simultaneously with two branches, incorporating reciprocally directed DC systems, connected to them a two-state switch controlled by a second power measurement system, where the signal from the first and second power measurement systems is connected to the input of the differential controller from which the output of the control signal proportional to the difference in the quantities withdrawn is connected to the controlled power controller, and from the first output of the power balance controller to the control switch,The controllers of each module are connected to the main control unit. A self-propelled working machine, in particular a mining machine, is characterised by having an electric drive system as described above. The mode of control of the energy flow in the on-board working machine, in particular the mine, is characterized by the measurement of power on the connections of the electrical energy storage unit (2) and on the main voltage train (5),the signals proportional to these forces shall be given on a differential system in the controller, shall be removed and the voltage proportional to the difference thus obtained shall be controlled proportionally to the differential signal, the power controller engaged in the two-way energy flow system (14),which connects an electric power storage unit to the main voltage train, of electric motor power directed from the electric power storage (2) to the main voltage train (5),the voltage on the main voltage rail (5) is increased by means of a controlled power regulator,which performs the charging process of the electrical energy storage (2),with the controller attached to the main control unit controlling the loading/unloading power, in the case of an appropriately positive/negative energy balance, measured by the aggregation of the delivered power, less the power absorbed by the receivers.