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| SinusLeistungsSteller - SLS Development/2015 |
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In this section we provide frequently news on development and progress ... Details about the SLS are found here (click...) 30.04.2015: As a first step towards our next generation of sine-controllers we want to give first impressions of µSLR-24-36 prototype. ... we are sure its size is near the optimum that´s possible with available technology! The µSLR-24-36 works with supply voltage from 5.0Vdc to 27Vdc (2 to 6S-LiPo) and can handle up to 36Aac of phase current. This means a maximum power of more than 800W. The cooling concept enables this to be continuous power. Further (the "R" in µSLR... indicates it) this prototype is powered by a much more powerfull µC core and a new developed firmware. Now things like fieldweakening, sensorless controlled RPM down to zero with full torque, reversing direction and the frequently requested CAN-bus are possible now! In a second step of development, auto-tuning for the motor parameters will be implemented. An optional 3 HALL-sensor interface for rotor position detection and some additional I/O for future externals are already implemented. 
With only 62,3g the µSLR-24-36 is a lightweight compared to cSLSi or SLSi. But that´s not the end! Imagine a version with less current µSLR-24-18, the alu-case (15g) can be replaced by one of plastic and the 2.5mm² wires can be done with reduced cross-section. A total weight of less than 40g should be possible... 
The alu-case (40,0 x 40,0 x 14,5mm), which also acts as a heat spreader, can be mounted to an external heat sink via 4 fixings. Alternatively these fixings can also be used to attach a 40mm fan. 
Now we are pushing the development of the µSLR-firmware: fieldweakening and sensorless controlled RPM down to zero with full torque are already implemented, but not tested completely. Many peripheral function implementation still has to be done - e.g. current profile, CAN-bus-module, etc. Also the SLS-Windows-Monitor doesn´t yet support the new µSLR. But we are confident to ship first pre-series samples to beta-testers within the 2nd half-year of 2015. 10.01.2015: The english version of this site is available now! To change the language, simply click on the country flag in the top left corner. We thank Ante Mrsic for his fabulous translation work! 05.01.2015: Happy New Year to everybody! ... Development 2014 ... (click here...) |