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Lenze inverters deliver a “close to real” experience on alpine ski simulator

25 February 2011

Easy to use inverter gives responsive control

Two compact Lenze SMV frequency inverters are delivering smooth start optimisation and motion control of the track on the Whizzard PRO alpine ski simulator, which, according to people who have tried it, is as close to the real thing as possible. Many describing their experience as ‘amazing’. Developed in Poland, the Whizzard PRO is designed both as a trainer for competitive downhillers and as an improvement aid for recreational skiers. The simulator is designed to take up minimum space, whilst providing the original experience of real skiing in the gym. Suiting both skiers and snowboarders, the Whizzard adjusts the slope angle whilst running and can give experience of extreme conditions, even moguls, at speeds of up to 30km/hour.

Key to the realistic operation of the Whizzard PRO are two Lenze SMV inverters. The first of these, a 5.5kW unit, drives two motors that drive the main track of the simulator. Controlled via an HMI, this inverter was chosen for its impressive low speed operation, ease of use, and compact dimensions which enabled it to be easily integrated into the optimized envelope of the Whizzard without modifications to the simulator structure. Low speed operation is equally important on the second Lenze SMV inverter, a 2.2kW unit, that controls the motor used to generate vertical movement on the Whizzard PRO, effectively simulating the irregularities experienced in down hill skiing.

The combination of the Lenze inverters enables easy adaptation of vertical and horizontal speed on the Whizzard PRO, taking into account the skill level of the skier. The precise control provided also allows the simulator to be used for rehabilitation of skiers following accidents, and provides a realistic element to complement existing ski training programmes.

The SMV is perfect for simulation tasks, due to its simple control and set-up procedures, which can be completed in seconds, and to its programmable EPM chip. The EPM allows users to copy across - in a matter of seconds - an entire operating set of parameters to another SMV drive. This same functionality can be used to quickly change a set of simulation parameters in an existing drive, delivering a wholly new experience to the user of the simulator. The EPM offers additional benefits in that it can often be used to return a machine to service without having to call out a support engineer, or commit skilled programming time to re-commission an individual drive.

The SMV range of inverter drives is available for single- phase operation from 0.37kW to 2.2kW and three-phase from 0.37kW to 22.0kW. The SMV range removes the cost and complexity from vector- based motor control, offering fast dynamic torque response, sophisticated auto-tuning and impressive low speed operation from a compact, low cost and simple to use package. The SMV drive also offers ingress protection to IP65, allowing for use outdoors, operation in environments with atmospheric moisture and protection from low pressure water jets. The SMV range is designed for use in motor applications where dynamic speed and torque control are required, such as conveyors, food production, packaging lines and HVAC systems.

For more information, contact Geoff Spear at Lenze Ltd, Fraser Road, Priory Business Park, Bedford MK44 3WH. Tel: 01234 753227. Fax: 01234 753220. Email: are not responsible for the content of submitted or externally produced articles and images.
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