Summary
International Symposium on Antennas and Propagation
2006
Session Number:3D2b
Session:
Number:3D2b-3
Performance Electromagnetic Bandgap in Core E Type Make High Frequency and Low Ripple
Herawati Ys, Eko Cipto, Iwa Garniwa,
pp.1-4
Publication Date:2006/11/2
Online ISSN:2188-5079
Summary:
The Bandgap will make the system better than without use it and makes the efficiency bigger than before but it must be fixed with in the system need it. When the system doesn’t fix will be influence with the duty cycle and bandgap, therefore obtained is output ripple current losses less than 10 percents. If the system has the fix bandgap then its must calculate about the magnetomotans in the system, where the magnetomotans is one of the sources of the electromagnetic field. The big ripple must take from the trouble system. Then reduce the trouble system with the model system with the new one but don’t change the size of the parameter before its. Like as inductance, and etc. So the magnetomotans build the electromagnetic field and then joint to electromagnetic field in the bandgap has. The core of the magnetomotans are made from ferrite, the ferrite can make electromagnetic field. The parameter can be find any electromagnetic field in the system. The number of magnetomotans must created 2, 4, 6, and so on, as a function of the controlling system, and can make it more than one conductor, the conductor made from copper and make it the stranded coil with 50 degrees. For that reason so can be calculate parameter like the high impedance surface forms much parameters to the one thing about electromagnetic bandgap. In this paper the core E type model with six bandgaps. Take the trouble system with the Cuk converter. In this paper for initial condition without use bandgap core type the efficiency about 4.3%, while the system use the bandgap will be 96% with the ring wire gauge about r = 4.10-4 m, if we change the ring wire gauge about r = 8.10-4 m, and the initial condition with no use bandgap core type is result of the efficiency about 7%, so the system use the bandgap can be reach 98%. If the inductance from the system Cuk converter about L = 8.2 μH, before modification, it found the ripple current more than 3%, then after the system was modify with for two inductance, with L1 = L2 = 4.4 μH can find the output ripple current as follows; before modify is 1.2% and After modification of the total output ripple current become 0.036%. Index Terms ? Bandgap, ferrite, core E type, low ripple high efficiency.