2 results listed
Induction heating has many advantages over the
conventional heating systems. Therefore, it is used in many
applications from cooking in the kitchen to surface hardening in
the industry. In this study, an induction heating system is
designed to dry a metal pipe passed through the painting process.
The half-bridge inverter is used at the power stage of the system
and the power switches are turned on under ZVS conditions.
FLC is preferred to perform the closed-loop power control and
the switching frequency of the inverter is selected as the control
variable. The temperature of the pipe used as feedback to set up
the inputs of the FLC is set to the reference value of 50 °C. A
low-cost DSPIC microcontroller is used to operate the FLC,
digitize the feedback, and generate gate signals for the switches.
1.st International Conference Energy Systems Engineering
ıcese'17
Salih Nacar
Selim ÖNCÜ
The DC voltage obtained by using MPPT from solar
panels in PV systems varies continuously depending on the
radiation and temperature. However, in different applications
using these systems, a constant voltage is desired to supply the
load. In this study, LLC resonant converter is used to convert
DC voltage obtained from the output of MPPT to the constant
output voltage value. The reason for preference of the converter
is that in a wide input voltage range and at high switching
frequencies, the switches on the primary and secondary side can
operate in the ZVS and ZCS conditions respectively. Thus, the
switching losses, which are the result of the conventional PWM
technique at high switching frequencies, are reduced and the
power density is increased. The voltage values varying between
40 and 60 V are applied to the input of the converter simulated in
PSIM and the output is fixed at 25 V. The control of the
converter is performed by changing the switching frequency in
the range of 90-106 kHz with PI controller constituted by using
simplified c block.
1.st International Conference Energy Systems Engineering
ıcese'17
Salih Nacar
Selim ÖNCÜ