An innovative power take off control system provides bi-directional power flow on a hydrogen fuel cell system. Our system actively manages power to and from the grid to give local grid support.
Drives and Automation Ltd provided a complete power control system comprising a Siemens Active Line Module (ALM), DC-DC converter; PLC controller and HMI housed within a floor mounted steel enclosure with all necessary control gear and protection.
The power take off system is designed to give bi-directional power flow between the 400VAC mains supply and the 300-480VDC fuel cell. The DC voltage can be set by the user and is actively controlled.
The main control system is based upon a Siemens SINAMICS S120 modular AC Active Line Inverter module.
The system is designed to be controlled by a simply on/off signal; this signal can be derived by manual controls on the HMI or via a remote PLC. Also the voltage setpoint can be adjusted during operation giving a very flexible power supply system.