AC/DC distribution

Alewijnse works together with you on the solutions of the future. One great example of this is the current distribution on your ship. Around 15 years ago, alternating current using AC distribution was the standard. Nowadays, direct or DC current is often the preferred solution. And there is a reason for this. Although alternating current may still be the right choice, direct current also has its advantages. Especially for ships with frequency-regulated electrical equipment.

Greater efficiency

Frequency regulators run more effectively with DC distribution. These regulators are now much cheaper and more reliable than in the past. So the advantages of DC distribution are becoming increasingly evident. If, for example, you are using an auxiliary generator with variable speed, DC distribution is the best choice. DC distribution disengages the rotational frequency from a generator, which ensures that you can use the capacity of a diesel engine to the full. DC distribution is efficient, requires little or no filters, and prevents problems with harmonic current and voltage.

Knowledge of safe practices

However, DC distribution does require specific knowledge, mainly in the area of safety. That is why Alewijnse focuses very specifically on short-circuit calculations. We do that together with Lloyd’s Register, which assesses and verifies the quality and reliability of ships. We use thorough tests and simulations to show that a DC network is stable and safe.

Frontrunners in the sector

We have progressed so much with short-circuit calculations that approval of a certified simulation model by Lloyd’s Register is just a question of time. We are the first in our sector to use that simulation method – certainly in the Netherlands, and probably also worldwide.