Danfoss Drives claims to have launched the first mass-produced VLT low harmonic drive. The drive eliminates the harmonic disturbances on the supply grid by actively imposing currents into the grid so that the high-quality sine wave of the grid current is maintained.
The drive has the same modular build as the company's normal high power drives and shares features such as high energy efficiency, backchannel cooling and user-friendly operation.
Due to its modular design, most elements are produced in large scale, leading to cost-effective production.
Where the performance of other low harmonic technologies depends on stability and load, or affects the controlled motor, the low harmonic drive continuously regulates the network and load conditions without affecting the connected motor, causing no increased winding stress or reduction of the bearing lifetime.
The drive also gives the user full readout of the unit performance towards the grid including graphical overview of grid behaviour.
These drives are available in the power range 160-710 kW and, meeting the IEEE519 recommendation, are also suitable for generator-powered installations such as backup systems.
Phone: 03 9538 4444
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