Isolated operation

Isolated operation is used in mobile systems without permanent connection to an AC supply system or a DC voltage source.

The system is supplied from an external energy storage unit. This energy storage unit provides sufficient energy for making mobile operation possible for a defined period of time before the storage unit needs to be recharged. Regenerative energy is fed to the storage unit during charging and can be re-used.

The external energy storage unit is connected to the DC link of the drive system via the MDE90A DC/DC converter module. The external energy storage unit can be charged either via an MDP90A/MDP92A power supply module or directly in the storage unit using a wireless MOVITRANS^® charging system.

An example wiring diagram of isolated operation can be found in chapter Wiring diagram isolated operation.