DC connections in intralogistics
KEB customers already use the direct connection of devices to the DC link in many dynamic tasks, such as lifting and travel drives in warehouse technology, in crane systems, for rotating tool drives in machining centres or also high-speed energy storage systems.
DC Supply - Plus and Minus
CONNECTED AT TWO POINTS
The structure of DC supply systems, or even the use of DC connection technology, simplifies the energy balancing of motion axes. This saves energy and, in operating conditions during which energy is generated, avoids the use of otherwise necessary braking resistors with thermal losses and fire hazards. The installation workload is also minimised, and the costs of drive controllers can be reduced somewhat as there is no need for the typical input wiring with a rectifier/thyristor/protective circuit.
Where a DC supply is not possible or available, central power supply and regeneration units feed the energy into the system or feed it back into the supplying network, or main drives supply the auxiliary drives connected in the DC network.
DC-supplied drive systems in machines and plants use different load cycles to exchange energy and improve system efficiency. In the DC circuit, the energy generated in the regenerative share is absorbed, partially buffered and distributed to connected drive controllers via the intermediate circuit. This reduces the energy consumption of the entire machine/plant, decreases the peak load uptake and optimises the network load or transformer load as well as the entire connected load at the supply point.