ESMT nanocrystalline core inductor cut inverter air conditioner with PFC inductor JHC7025

1. Application filtering, the type common mode inductance, brand ESMT, Model 70 * 40 * 25, package plug-inductance, winding form between single wound, nature guide magnet core, core shape ring, operating frequency frequency, installation of horizontal non-sealed plastic reinforcing materials, quality factor Q 10, inductance 5mH, tolerance + -25%, the inductive reactance XL 10K (Ω), rated current 50000 (mA), distributed capacitance 0 (F) Nominal Voltage 0.3 (V), 2. Nanocrystalline Alloy common mode inductance of magnetic saturation flux density Bs (T) 1.25 Initial permeability μi (Gs / Oe)> 8 × 104 maximum permeability μm (Gs / Oe)> 20 × 104 coercive force Hc (A / m) <2 Curie temperature Tc (℃) 560 crystallization temperature Tx (℃) 500 saturation magnetostriction coefficient λs <2 × 10-6 <2 continuous working Temperature ℃ -50 ~ 130 residual magnetic flux density Br (T) 0.5 ~ 0.8 iron loss P (20kHz, 0.5T), (W / kg) <25 iron loss P (100kHz, 0.2T), (W / kg) <70 iron loss rate of change ΔP (-50 ~ 125 ℃) <15% amorphous alloy material is a new advent in the 1970s, it is adopting international advanced super-quenching technology of liquid metal with 1 × 106 ℃ / sec direct cooling the cooling rate, having a thickness of 0.02 mm ~ 0.04mm solid strip to give an amorphous alloy having a short-range order, long-range disorder characterized by a combination of the atomic arrangement, it does not have the crystal structure of a conventional metal materials, so it has with traditional materials different performance characteristics, such as excellent soft magnetic properties, corrosion resistance, abrasion resistance, high hardness, high strength, high resistivity. Because of its excellent performance, simple production process, since the 1980s, as domestic and foreign materials research and development and application of focused scientific community, not only developed a soft magnetic materials for the electronics industry, but also the development of alloy materials for other purposes, such as brazing materials, catalysts, construction materials. Of the late 1980s, scholars and amorphous material developed on the basis of nanocrystalline soft magnetic alloy material, the material has more excellent soft magnetic properties of amorphous common mode inductance characteristics: EMC common mode inductors filter with nanocrystalline ( Nanocrystalline) make EMC common mode inductors filter core, having a high saturation magnetic induction, high permeability, high inductance, good frequency characteristics and good temperature stability (long-term use in the temperature range of -50 ~ 130 ℃ ) and so on. Suitable for grid and various power of EMC common mode interference filter and protect the delicate electronic equipment and other fields. Applications: common mode inductance choke is an important part of the switching power supply, inverter, UPS power supply and other devices. How it works: When the operating current flow through the two coils wound to the contrary, the two cancel each other out to produce a magnetic field H1, H2, damping operating current at this time it is mainly affected by the ohmic resistance of the coil and can be ignored under small leakage inductance, excluding operating frequency . Common mode inductance and spike suppressors are small signal operation, the bigger the better claim inductor, inductance L is proportional to the effective permeability μe, the same specifications as the core, μe higher, L greater. Thus the choice of Nanocrystalline alloy material to make the common mode inductor core core size can be greatly reduced, especially as a large current, common mode inductor core high-power conditions, with a good price, replace ferrite bead . Usually this type of ferrite effective permeability of about 10,000, and Nanocrystalline Alloys effective permeability μe be 8 to 100,000, the same request inductance, which only the former core size of 1/8 to 1 / 10, the difference between the unit price of about 4 to 5 times, apparently Nanocrystalline Alloy more competitive. The three-phase power supply, the operating current 100A, a Φ130 × Φ90 × Φ30 mm Nanocrystalline alloy cores instead of four Φ130 × Φ70 × Φ50 high performance ferrite core. Since the Fe-based nanocrystalline alloy small power consumption, thus allowing the flux density higher than 200mT. Core section and volume decline, reducing the number of turns, the high-frequency electronic transformer with copper and iron amount will drop down the overall cost.