A.Forward output : final year cse projects in Bangalore

The PWM signal of the main switch is given some delay compared to auxiliary switch. The

phase difference is obtained by delaying the carrier waveform. The main switch is turned on

while the auxiliary switch is still in the state. Before the main switch is turned on the anti-parallel

diode of the main switch is turned on. Final year eee projects in Bangalore. The main switch

voltage has a slope by the snubbed capacitor when the main switch turns off. The waveform

shows that the main switch operates at zero voltage condition.

“http://www.embeddedinnovationlab.com”. The average output voltage is obtained to be

around 380V. The average output current is obtained to be around38 A.

Reverse output

We then compared the torque outputs of without soft switching model and IGBT soft switching

model as shown in Fig. 7 and Fig. 8 respectively. Maximum torque in both models is 14 N-m. As

clear from the output, torque start decreasing in interval (0-0.01 sec) and after that it becomes

constant up to 0.22 sec and further decreases and becomes negative. Final year embedded

system projects in Chennai. After that it again starts increasing and becomes constant in

interval from 0.23 sec to 0.5 sec. From 0.5 sec it again starts increasing to maximum value and

after that it again decreases and become constant for the model without soft switching. Torque in

soft switching model decreasing in interval (0-0.01 sec) and after that it become constant up to

0.3 sec and further decreases and become negative. http://www.embeddedinnovationlab.com

After that it again starts increasing and becomes constant in interval from 0.3 sec to 0.5 sec.

From 0.5 sec it again starts increasing to maximum value and after that it again decreases and

become constant. http://www.embeddedinnovationlab.com.From the outputs we observed that

torque improves with soft switching technique. Finally, we compared the voltage outputs of

without soft switching model and IGBT soft switching model whose outputs are shown in Fig. 9

and Fig. 10.Voltage in without soft switching model decreases first and after that it becomes

constant. In soft switching model, voltage remains constant over the whole period. So we can

infer that there is no effect on the bus voltage when motor starts with soft switching.

The named as ‘isolated switched-capacitor tapped-inductor (SCTI) boost

converter’. The proposed converter consists of two parts. The primary side

has a TI boost converter with a singlemain switch controlled by a PWM

compensator and a gatedriver. The secondary side has an isolated charge

pump. From the inductor tapping, the main switch voltage stress is

Reduced, final year mechanical projects in Chennai. And the voltage spike

on the switch is significantly attenuated. Given that low voltage stress exists

on the active switch, the circuits can use low voltage MOSFETs, which

generally have low Rds(on). MOSFETs decrease the conduction loss

dramatically [10], thus making this variable one of the dominant factors of

efficiency. http://www.embeddedinnovationlab.com. The output of the

switched cell is connected with the boost output in series. The stacked-

output structure of the proposed converter is suitable for high-voltage and

low-current applications. Compared with other multiple-module connected

topologies, MOSFET and diode are relieved from severe voltage stress. The

DCM is also employed to eliminate the reverse-recovery loss of the diode.

http://www.embeddedinnovationlab.com