Since 2002 , focus on manufacturing and supplying various kinds of bonded ferrite magnets

     

What is the impact of magnets used in pulse transformer iron core?

by:Maghard      2020-09-11
What is the impact of magnets used in pulse transformer iron core? Pulse transformer is used to transmit pulse transformer. When a series of pulse duration t d ( m s) Voltage, pulse amplitude to U m ( V) Single pulse voltage is added to the number of turns for N pulse transformer winding, at the end of each pulse, the magnetic induction intensity increment & Delta; B ( T) To: & Delta; B = U m t d / NS c ′ 10 - 2 which S is the cross-sectional area of core c ( 厘米2) 。 The magnetic induction intensity increment & Delta; And the area of the pulse voltage (B Volt-second product) Is proportional to the. When the output one-way pulse, & Delta; m - B = B B r, if add the demagnetization winding on pulse transformer core, & Delta; B = B m + B r。 Under pulse condition, by the dynamic pulse hysteresis loop & Delta; B with the corresponding & Delta; The ratio of H p for pulse magnetic permeability m p. The ideal pulse waveform is refers to the rectangular pulse wave, because of the influence of the parameters of the circuit, the actual pulse waveform with rectangular pulse, often the distortion. Such as the rise time of pulse edge and pulse transformer leakage inductance L s t r, winding and structural parts caused by distributed capacitance C s is proportional to the pulse roof fall is inversely proportional to the excitation inductance L, m, L and eddy current loss factors can also affect the output pulse waveform. Pulse transformer leakage inductance L s = 4 b p N 1 2 L m/h pulse transformer primary excitation inductance L m = 4 m p p s N 2 c/L & prime; 10 - Eddy current loss of 9 Pe = U m 2 t d lF / 12 N 1 2 d S c r b related to winding structure coefficient, l m long for an average of the winding coil, h is the width of the windings, 1 is the primary winding circle number, N l as the core of the average length of magnetic circuit, S c for core area, m p for core pulse magnetic permeability, r as core material resistivity, d is the thickness of the core material, for the pulse repetition frequency F. Can be seen from the above formula, in a given number of turns and core area, the greater the pulse width, requirement of core material variation of magnetic induction intensity & Delta; The larger the B; In pulse width to timing, magnetic induction intensity variation of core material & Delta; B, can greatly reduce the pulse transformer iron core of cross-sectional area and the number of turns of the magnetizing winding, can reduce the volume of the pulse transformer. To reduce the pulse wave front distortion, we should try to reduce the pulse transformer leakage inductance and distributed capacitance, therefore need to make the pulse transformer winding circle number as less as possible, which requires the use of high pulse magnetic permeability of materials. Want to reduce roof fall, as far as possible to improve elementary excitation inductance L, m, which requires the core material has high pulse magnetic permeability m p. To reduce the eddy current loss, should choose high resistivity and thickness of thin soft magnetic strip as core material as far as possible, especially for high repetition frequency, pulse width of pulse transformer. Magnet information: the establishment of China's largest wind power base would boost domestic ndfeb market planning and construction in our country the first million kilowatt wind power base has been in the jiuquan planning and construction of our country. This major project is expected to total investment of more than 1200 one hundred million yuan, will become China's oil in west east, west to east gas pipeline, Tibet railway after the development of the western region and a hallmark of important projects. To 2015, the installed size of the wind power generating capacity will be equivalent to the three gorges project now. In order to form a complete set of wind power base in gansu province, gansu province is also big projects bidding in our country, the biggest will be promoting the ndfeb magnet industry in China, is expected to use 25 million tons ndfeb is equal to the magnet exports over the past two years, second wind power base of the construction of the equipment supply, gansu province, plans to use two to three years of time, in the 'states, yumen district, and the melon states plan to construct a group of fans ready, fan blade manufacture, fan wheel, flange and tower drum manufacturing project, by 2010 will become an annual output of 1. 5 million kilowatts, 1000 sets of blades, tower fan drum 1000 sets of production capacity. Rely on the huge amount of wind resources, gansu province puts forward the concept of reengineering 'three gorges on the land'. In accordance with the gansu hexi new energy plan, 2020 plan built installed 20 million kw, this would have built more than 18. 2 million kilowatts of installed capacity of three gorges project. Magnet company is the specialized production ( Ndfeb) Powerful magnet company, has factories in dongguan city based wangniudun pier town. Magnet products used in toys, jewelry, crafts gifts, handmade gift box, leather handbags invisible magnetic button, plastic hardware products, audio equipment and other industries. Our company is located in dongguan city based wangniudun block cao beijiao town five chung village industrial zone, the company can provide customers 24 hours delivery, 36 hours to the customers specifications template. Magnet experts will find magnet products co. , LTD. , dongguan city, pack your satisfaction, more information you can view our company website/magnet. This article rigorous reproduced, if there are any violation, the consequence is proud! / dongguan magnet products co. , LTD. , magnets, powerful magnets, profiled magnets, magnet factory, dongguan magnet products co. , LTD
Custom message
Chat Online 编辑模式下无法使用
Chat Online inputting...