System and method for starting high inertia machines
AssigneeRENK Aktiengesellschaft
InventorDan Loeffler
Life of this patent
Estimating the term…
Abstract
A drive system for a working machine with a working device which can be unloaded for starting, wherein the drive system comprises at least one main motor, which is designed as an electric machine, in particular as an asynchronous motor, and a motor shaft; an auxiliary motor, which is designed as an electric machine, in particular as an asynchronous motor; and a starting device for starting the auxiliary motor. The auxiliary motor is configured to start and/or accelerate the working machine, in particular up to a synchronous speed of the main motor.
Claims20
A drive system for a working machine with a working device that can be unloaded for starting the machine, the drive system comprising:
- at least one main motor designed as an electric machine, and including a motor shaft;
- an auxiliary motor designed as an electric machine;
- and
- a starting device for starting the auxiliary motor;
- wherein the auxiliary motor is configured to at least one of start or accelerate the working machine;
- and
- wherein the auxiliary motor, in cooperation with the starting device, is configured to adjust a rotational speed in such a way that when the main motor is switched on, a valid synchronous rotational speed is present for a mains frequency measured in a supply network that provides power to the drive system.
A method for operating a working machine, the working machine including at least one working device and a drive system comprising at least one main motor designed as an electric machine and having a motor shaft, an auxiliary motor designed as an electric machine, and a starting device for starting the auxiliary motor, wherein the auxiliary motor is configured to at least one of start or accelerate the working machine, the method comprising:
- unloading the at least one working device of the working machine;
- starting the drive system with the starter-actuated auxiliary motor;
- and
- switching on the main motor at synchronous speed of a supply network.
Dependencies are inferred from the claim text.