Crootem introduces the latest active power filter to eliminate power grid harmonic. With real-time monitoring of current waveform of non-linear load, the filter removes the fundamental harmonic and shift the rest out of phase. afterward, the IGBT converter feeds the current back to the grid. Additionally, the filter can provide leading/lagging phase wattless current, in order to improve power factor of grid and dynamic wattless compensation (for example DVC).
Switching power supply generally introduces common mode noise in the frequency range from 10 kHz ~ 50 MHz or even higher. Therefore, to effectively reduce these noises, the common mode inductor shall have a high enough impedance. To achieve this specification, the high permeability Manganese-zinc ferrite and the amorphes material are the most appropriate choices. The Common Inductor's impedance Zs consist of the inductance Xs and the resistance Rs.
By integrating the data bus transformer, the data bus transform is compliance with military data bus standards of MIL-STD-1553 (US) and GJB289A-97 (CHINA). The product secures the stable data transmission in aviation and aerospace applications.
With many years of experience of full compliance with military data bus standards of MIL-STD-1553 (US) and GJB289A-97 (CHINA), the insulating and coupling transforms guarantee the best electrical performance of data transmission in extreme environments. The technical consultation and customized engineering service provide the turns ratio configurations, component isolation, and common-mode rejection ratio characteristics to meet the requirements of the standards.
Circuit board filtering module is the most suitable product for DC/DC power supply to suppress the noise. Compliance with the military standard, the working temperature is from -55°C to +125°C.
With standardized and customized magnetic components and EMI filter solution for military-grade power supply, UPS emergency power, smart grid, rail transport, Photovoltaic grid-connected inverter, communication, Crootem Electronics involving actively in the renewable energy, e-mobility, defense and industrial applications.
With the increasing number of hybrid and electric vehicles, the infrastructure market is growing accordingly. Not like the petrol stations, the charging stations are still located mostly in the center of some large cities and some highways between them. Although there are still a lot of technical difficulties with energy storage and the huge cost of transition from fossil energy to diverse energy sources, it is clear that the electric energy is the most flexible energy form for the next decades. For the charging system, Crootem provides a wide scope of inductive components and modular system for:
The full-digitally controlled Gate Drive Unit (GDU) for High Power Insulated Gate Bipolar Transistors (IGBT) provides all necessary features, such as active control, active clamping during switching off and active balancing of the collector voltage for IGBTs connected in series.