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Wind Kite Generator


This was ‘n research topic that stretched over 2 years. The kite power concept consists of a kite attached to line which can stretch high into the atmosphere.

Generally a line made of dyneema is used for kite applications, because of its high impact strength. The line is wound around a drum and as the wind attacks the kite, a pull out force is generated, causing the drum to turn. The drum is connected via a fixed gear ratio to a generator axis and this allows the generator to convert the kinetic energy into electricity.

Grinding Wheel Test Bench


When buying a new grinder blade, one needs to be sure that the blade won’t burst under pressure at any given speed below design specifications. HmT Mechatronics, working with Grinding Techniques, designed and produced a testing machine to test 52 different kinds of grinder blades.

A 7.5kW motor is used to turn/spin the grinder blade at extreme speeds (max 30 000 rpm) via a pulley ratio of 7.2/1. From a laser sensor mounted next to the turning blade or wheel the PLC is able to detect the exact speed at which the disk starts to shatters or burst. This RPM reading is determined by using a feedback encoder mounted at the back of the induction motor. The PLC’s high speed counter counts every revolution and by means calculates the corresponding RPM of the disk. A VSD was used to produce a long ramp-up/down time.