Category | November

Applying High Frequency GaN Transistors to Motor Drives

Posted on 29 June 2012

      No Diodes? Really? The low charge associated with gallium nitride high-electron-mobility transistors (GaN HEMTs), and the consequent low switching loss and fast switching speed, make these devices attractive for any switch-mode power application. A lesser known characteristic, the lack of a parasitic junction, is also particularly advantageous for motor drives, in that [...]

Power Electronic Modules in Critical Auxiliary Drives in Windmill Applications

Posted on 29 June 2012

      The main task of a windmill clearly is harvesting energy and feed it to the grid. It often remains unnoticed, that controlling the mechanical parameters of the power plant also involves power electronic. To properly control the mechanical components of the plant, adapt its aerodynamic properties to the wind speed, allow for [...]

The Effective Use of High-Speed Isolated Data Acquisition Systems

Posted on 29 June 2012

      For Safe, Accurate Rapid Transient Electrical Measurements Typical rapid transient electrical applications are often characterized as “mission critical.” In many cases, an engineer or test technician may have just one viable opportunity to capture invaluable diagnostic data for the prevention of damage to machinery and equipment. By Michael Hoyer, Applications Engineer, HBM, [...]

The Grey Area

Posted on 29 June 2012

      Access at your own risk Data sheet specifications for power semiconductors are values which are assured by the manufacturers. But they can only be used to a limited extent for dimensioning and calculation. By Thomas Schneider (Dipl.Ing.FH), GvA Leistungselektronik GmbH, Mannheim Even semiconductor parameters which at first glance appear mundane and often [...]

New Hardware-in-the-Loop Platform for Rapid Development of High-Reliability EV and HEV Propulsion Drives

Posted on 29 June 2012

      Main propulsion drives are one of EVs (electric vehicles) and HEVs (hybrid electric vehicles) safety-critical systems. A configuration with only a DC-link current transducer instead of two phase-current transducers promises improved sensor reliability when matched with equally reliable software implementation of the phase-current reconstruction algorithm. With a new ultra-low-latency (ULL) hardware-in-the loop [...]

New Power Semiconductor Devices

Posted on 29 June 2012

      A practically all range of power semiconductors Proton-Electrotex JSC is one of the leading Russian companies in terms of development and production of high-power semiconductor devices: diodes, thyristors, and modules on their base, heat-sinks. By Loktaev Yu. M., Stavtsev A.V., Surma A.M., and Chernikov A.A., Proton-Electrotex   The released production covers practically [...]