Smart wireless sensor network management based on software-defined networking

Smart wireless sensor network management based on software-defined networking

shows the self-oscillating gate-drive network with gate-to-source capacitor Cgs of the MOSFET. In order to analyze the influence of gate-to-source capacitor Cgs on the gate-drive network, the equivalent circuit of the self-oscillating gate-drive network with gate-to-source capacitor Cgs is built, as shown in shows the key waveforms of the equivalent circuit for the self-oscillating gate-drive network with gate-to-source capacitor Cgs . At the initial time, t0 , feedback current is equals magnetizing inductor current im, and Zener current iz reaches zero. In the duration from the voltage across gate-tosource capacitor Cgs which is equal to gate-to-source voltage Vgs changes from voltage level Vz into voltage Smart wireless sensor network management based on software-defined networking level Vz. As a result, gate-to-source capacitor current ic increases from the current level of zero. At, magnetizing inductor current Im equals the sum of feedback current Is and gate-to-source capacitor current Ic .

When the voltage across the Zener diode, which is equal to gate-to-source Vgs , reaches voltage level Vz , the Zener diode operates in breakdown state, and gate-to-source capacitor current ic is equal to zero. In the duration from feedback current is is greater than magnetizing inductor current im, and gate-to-source voltage Vgs is clamped at voltage level Vz. At, feedback current is is equal to magnetizing inductor current im, and Zener current iz reaches zero Smart wireless sensor network management based on software-defined networking. In the durationKey waveforms for the equivalent circuit of the self-oscillating gatedrive network with gate-to-source capacitor Cgs .from, the voltage across gate-to-source capacitor Cgs , which is equal to gat Smart wireless sensor network management based on software-defined networking e-to-source Vgs , changes from voltage level level of zero.

Smart wireless sensor network management based on software-defined networkings

At, magnetizing inductor current Im equals the sum of feedback current Is and gate-to-source capacitor current Ic . When the voltage across the Zener diode, which is equal to gate-to-source voltage Vgs , reaches the voltage level the Zener diode operates in breakdown state, and gate-to-source capacitor current ic is equal to zero. In the duration from, feedback current is is less than magnetizing inductor current im, and gate-to-source voltage Vgs is clamped at the voltage level, feedback current is is equal to magne Smart wireless sensor network management based on software-defined networking tizing inductor current im, and Zener current iz reaches zero.

In order to simplify the derivation procedure of the design equation for the gate-drive network, the following assumptions are made: the durations from each span over one half of the cycle; during td , the absolute value of the slope for the magnetizing inductor current remains constant and equals to the absolute value of the slo Smart wireless sensor network management based on software-defined networking pe for the feedback current. According to the timing diagram in magnetizing inductor current Im equals Smart wireless sensor network management based on software-defined networking the sum of feedback current Is and gate-to-source capacitor current Ic at the one half of the cycle,