Hybrid power laboratory

The hybrid power laboratory combines power and simulation lab for educational and research purposes. It enables the testing new novel marine power plants. Especially, performances of strategies (e.g., peak shaving) for enhanced dynamic support of the conventional (diesel) power sources through the exploitation of energy storage capabilities can be assessed in conditions close to the real-life. These new strategies should lead to enhance the system performances (reduction of fuel consumption, reduction of pollutant emissions, saving of maintenance cost) and the system safety.

Concretely, the hybrid power laboratory comprises two diesel engines connected to variable-speed generators, rectifiers enabling the energizing of a DC distribution system. The DC distribution system is connected to two banks for electricity storage. One of this bank is a capacitors bank, while the other one is a battery bank. At last, the DC distribution system is connected to two electric consumers each constituted by an electric motor connected to an eddy current brakes.  A schematic overview of the hybrid power laboratory is shown in Figure 3. Figure 2 and Figure 3 illustrate some of the main components of the facility.

An open management system enables the supervision and the control of the whole system. It provides an environment to develop and test new control strategies and algorithms. A wide set of sensors enables to monitor the system behaviour and, especially fuel consumption and pollutant emissions.

Figure 1

Figure 1: Diesel generators of the Hybrid power lab

Figure 2

Figure 2: Electric motors and eddy current brakes of the Hybrid power lab

Figure 3

Figure 3: Single line diagram

Some specifications are given below:

Engines (diesel):
Perkins 1306C: 209 kWb @ 1500 rpm
Perkins 2506C: 412 kWb @ 1500 rpm

Generators (variable speed):
138/230 kVA 30/50Hz @ 900/1500 rpm
200/400 kVA 30/50Hz @ 900/1500 rpm

Battery bank:
Lithium Ion 159Ah/45kWh – 346 Vrated
Charge/Disch. Rate 200/400A // 400/800A

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

Electric motors:
160 kW (1015 Nm @1500 rpm)