Influence of power supply distortion on power conversion harmonics measurements

The frequency range 2 – 150 kHz, typically occupied by switching harmonics and communication signals, is still a gap in the IEC emission standards. The main difficulty in reaching a standardized measurement method is finding a suitable power source. The low-frequency and high-frequency content of the power supply is deterministic for the measured emission, as well as the source impedance. Measurements and analyses are done on both PV-inverters and compact fluorescent lamps to see the influence of the source on the emission

Profibus DP slave shield as matlab coded virtual system

The presented Profibus DP Slave Shield creates a link between the Profibus DP network and an Arduino microcontroller. The system opens possibilities to connect virtual systems running Matlab models to a Profibus DP network at 12Mb/s. The Profibus Slave Shield is developed for educational purposes

Low-cost PROFIBUS DP slave shield for embedded controllers

The presented PROFIBUS DP Slave Shield creates a link between a PROFIBUS DP network and a microcontroller or embedded controller. The hardware can be used as an extension module for different embedded controllers with sufficiently fast IO. The system opens possibilities to connect virtual systems or Hardware-In-the-Loop systems running realtime MATLAB models to a PROFIBUS DP network running up to 12 Mbps. Measurement of signal timing and latency shows that the shield itself does not introduce significant latency