Hybrid Power Systems Laboratory (HPS)

Hybrid Power Systems Laboratory (HPS)

The HPS laboratory provides experimental facilities to test different types of hybrid power systems applicable to green shipping for educational and research purpose. This infrastructure for research and testing of reduced or zero emission marine transportation energy technologies/solutions enables paradigm shift from traditional diesel engines to reduced or zero emission energy solutions such as fuel cells, batteries, super capacitors.

This laboratory has two variable speed diesel engine-generator sets connected to DC grid through rectifiers. The DC grid is also powered by a fuel cell stack. Furthermore, DC grid is connected to ESDs (battery bank and supercapacitors bank) through DC-DC converters. Ship propulsion and auxiliary loads in the vessel are emulated via two electric consumers, each comprises of a variable speed electric motor driving the eddy current brakes.

A supervisory control and data acquisition system is implemented in the control room, which provides an environment to develop and test new control strategies including load sharing, peak shaving, spinning reserve, enhanced dynamic performance, enhanced ride through, strategic loading, zero emission operation. A wide range of sensors enables to monitor the system behavior including fuel consumption and emissions.

Språ

kvelgerVariable speed diesel engine-generator sets

 

Variable speed electric motors and eddy current brakes

 

Single line diagram of the DC hybrid power system

Some technical specifications are as follows:

Diesel engines (variable speed):
Small engine: 209 kW at 1500 rpm
Big engine: 412 kW at 1500 rpm

Synchronous generators:
138/230 kVA at 30/50Hz and 900/1500 rpm
200/400 kVA at 30/50Hz and 900/1500 rpm

Fuel cell stack: 2 × 30 kW

Battery bank (lithium ion):
159Ah/45kWh, 346 V
Charge/Discharge rate - 200/400A // 400/800A

Capacitors bank:
200 capacitors in series (3kF per cap)

Electric motors:
160 kW and 1015 Nm at 1500 rpm