RFL Alternator versus Kubota Alternator
A comparison on the Kubota D722 Diesel Engine (Kubota GL9000 GenSet)
Archive for month: July, 2016
Unbalanced Loads
For efficiency and maximum performance 3 phase alternators are the most common alternators on the market, however due to the very nature of the design they are required to work at a balanced load. Unfortunately, it is almost impossible and unrealistic to run 3 perfectly balanced loads. Any variation on any of the loads will cause unbalance in the alternator. An unbalanced load can cause a number of unwanted effects on a alternator which can in-turn affect the load.
Generator Paralleling
The world is becoming more reliant on electrical power. Electrical power is required for a primary source of energy, back-up systems, military deployment and disaster relief. As technology increases the power demand grows, and systems can-not afford to go offline.
This drives the requirement to have larger and more reliable generators. Larger generators become unpractical and a single point of failure is evident. RFL have developed Interior Permanent Magnet Generators (IPMG) that are designed to allows a series of generators to run in parallel.
Unbalanced Loading Behaviour
Abstract —Portable AC generators directly driving isolated AC loads require tight voltage regulation, good voltage waveform quality and high efficiency. This paper studies the performance of a 4 pole, 16 kW interior permanent-magnet generator under balanced 3ph and unbalanced 1ph resistive loading conditions. For the unbalanced 1ph condition, the use of star and delta winding connections is compared. The results of analytical and finite-element simulations have been compared with experimental results.
Parallel Operation of Small Interior Permanent Magnet Alternators
Summary
Small (kW range) portable AC generating units are used to drive isolated AC loads and normally consist of a diesel or petrol prime mover and a wound-field synchronous generator.