Wind Turbine PMG PMA,Wind Turbine PM (Permanent Magnet) Generator Alternator

Aluminium is lightweight and strong. It is used extensively in the aerospace industry and increasingly in the high end automotive industry too.

Heat treatment is a means of increasing the strength of cast aluminium components by subjecting the aluminium component to a series of thermal cycles. Depending on the composition of the aluminium alloy and type of heat treatment, the strength of the part can increase by up to 50%.

Use of stainless steel shafts and fasteners are important in components that need to have a long working life, excellent fatigue resistance, good anti corrosion properties where the failure of the component due to vibrations, corrosion, stress must be kept to a minimum.

Use of NdFeB rare earth magnets which have a working temperature of 150 degrees celcius with high HcJ, Br, and BH performance. A high working temperature will ensure that the PMG will carry on working for a longer time as the magnets will not demagnetise that easily compared with lower rated magnets.

The magnets all have high intrinsic coercive force (HcJ), residual flux density (Br), and energy product (BH) values which means that these are high strength magnets capable of producing more power than normal magnets.

The windings have a temperature rating of 180 degrees celcius for an extended operational life and protection against overheating which may result in short circuits or fires.

All aluminium parts are anodised to form a hard oxide layer which is stronger than paint and other soft coating protection against corrosion when exposed to the environment. Other means of protection are prone to abrasion and wear which will reduce the effectiveness of the protective layer against corrosion.

High potential insulation testing using 1kV power supply is performed to check for the integraty of the insulation of the windings and wires to ensure that there is no electrical failure. The units are also stressed by drawing maximum power for extended periods of time and short circuiting the output to overload/brake the PMG occasionally to ensure that the unit is performing well.

Computer assisted design software packages are used extensively in the company. These include specialised sofware which perform 3D-modeling tasks, FEA analysis which include magenetic field simulation and mechanical stress simulations. Use of modern industrial software packages which are designed specially to help engineers design, simulate, analysis and modify their designs on computer before even a single component if made reduces the time required to design, manufacture and optimise a particular component or part. These are industry recognised packages which have been tried, tested, improved and upgraded throughout the years

Quality checks are performed at least 6 times at different stage with specially designed proprietary tools & jigs.

At every major stage of the manufacture, strict quality control is applied to the proccessed parts to ensure that all manufactured parts meet with the strict criterior that we lay down. We would rather have a wast component than to have a failed part in service.

Specially inhouse designed tools and jigs are used extensively during the manufacturing and the inspection phases. These help to ensure a tight control over the machining and assembly processes so that there is consistency in the products and also ensure high performance of the PMGs as alot of the performance is determine by the precise machining and assembly of the PMG parts.

At the end of the day, the outward appearance of a product is an important factor to grab the attention of the customer. We ensure that our finishes are of a high quality and long lasting such that it not only has an appearance effect but also acts as a protective layer.