Overview
Today electrical system equipment is designed as “add-on” philosophy, they can draw electrical power from generators up to over load without any control of this request. Distribution system is transparent to this behaviour and it’s made by hardware devices providing wiring fault only in order to avoid a wiring escalation in case of wire fault.
Generators are capable of 150% and 200% of nominal power for 5 minutes and 5 sec respectively. To meet these requirements generators are over-sized, anyway a long-lasting overload request will be faced by shedding not flight safe essential landing load. This policy is called load management. The trend of “all-electrical” aircraft and green constraints calls for deep change in load management philosophy, the equipment will be useful during flight testing of EPC and flight demo.
The current proposal is aligned to the new calls for greening and fully useful to develop a new generation Electrical power centre able to manage power and loads efficiently. Dana srl proposed to develop a new Programmable Resistive Electrical Load with an Advanced Power Supply Module, having 20 years’ experience on electrical load manufacturing, ensuring excellent reliability and easy to use GUI.
This equipment was named “DSOT300-125S” and ensured a fast response to input voltage transient ensuring optimum performances even testing an EPC in voltage chopping mode. Special request of qualification test was fully satisfied, and the need for speed of loading the EPC was ensured by a new analogue and digital redesign using solid state resistors specifically designed for this proposal. The equipment was low temperature drift less than 0.1%.
Funding
Results
Executive Summary:
Today electrical system equipment is designed as “add-on” philosophy, they can draw electrical power from generators up to over load without any control of this request. Distribution system is transparent to this behaviour and it’s made by hardware devices providing wiring fault only in order to avoid a wiring escalation in case of wire fault.
Generators are capable of 150% and 200% of nominal power for 5 minutes and 5 sec respectively. To meet these requirements generators are over-sized, anyway a long-lasting overload request will be faced by shedding not flight safe essential landing load. This policy is called load management. The trend of “all-electrical” aircraft and green constraints calls for deep change in load management philosophy, the equipment will be useful during flight testing of EPC and flight demo.
The current proposal was aligned to the new calls for greening and fully useful to develop a new generation Electrical power centre able to manage power and loads efficiently. Dana srl successfully proposed to develop a new Programmable Resistive Electrical Load with an Advanced Power Supply Module, having 25 years’ experience on electrical load manufacturing, ensuring excellent reliability and easy to use GUI.
This equipment was named “DSOT300-125S” and was ensured a fast response to input voltage transient ensuring optimum performances even testing an EPC in voltage chopping mode. Special requests of qualification tests were fully satisfied, and the need for speed of loading the EPC had been ensured by a new analogue and digital redesign using solid state resistors specifically designed for this proposal. The equipment has low temperature drift less than 0.1%.