A swift and precise current measurement is needed for the exact regulation of power electronic systems such as frequency converters, switch-mode power supplies, UPS systems and welding systems. HARTING current sensors that have been specially developed for these environments offer a very high level of interference resistance, in addition to highly accurate measurements.
» Tobias Schäfer, Product Manager OEM, Germany, HARTING Technology Group, Tobias.Schaefer@HARTING.com
Power electronics is a key technology in markets like railroad technology and renewable energies, and one of the most significant application fields for HARTING solutions.
HARTING is the market leader in electromechanical components and systems for these applications, and is steadily expanding its product range for connector technology. Now HARTING has added new sensor components and developed innovative solutions for this product range.
Current sensors are electromechanical components that supply a precise mapping of the input and output currents in real time. These measurement signals are used for precisely driving the power semiconductors and for system monitoring.
In close cooperation with important key customers, HARTING has developed an optimized solution that fulfils the requirements of modern power electronics. The new current sensor product family is based on the proven Hall effect, which measures, in an electrically isolated manner, the current via it’s magnetic field. Two measurement principles are utilized here: Compensation current sensors (Closed Loop technology) are available for demanding measurement jobs; directmapping current sensors (Open Loop technology) can be used if the precision requirements are not as strict.
In addition to a robust design developed for use in harsh environments, such as found in the rail and renewable energy markets, the new HARTING current sensors also offer a very high level of resistance to interference from external magnetic fields. A further advantage for developers is that the sensors are easy to integrate into existing applications, as the sensors universally have standard footprints and installation dimensions.
The adapted termination technology and preassembled signal lines allow economical and reliable assembly. The separate purchasing processes for mating connectors and cabling are eliminated, and the variety of parts is reduced.