Fixed-frequency control strategies for a series resonant inverter for induction heating - comparison of properties

2016 ◽  
Vol 1 (3) ◽  
pp. 116-119 ◽  
Author(s):  
Zbigniew WARADZYN
Keyword(s):  
Induction Heating ◽  
Control Strategies ◽  
Frequency Control ◽  
Fixed Frequency ◽  
Resonant Inverter ◽  
Series Resonant ◽  
Series Resonant Inverter

scholarly journals Pulse Density Modulation Based Series Resonant Inverter Fed Induction Heater System

2018 ◽  
Vol 9 (2) ◽  
pp. 690
Author(s):  
S. Jaanaa Rubavathy ◽  
P. Murugesan
Keyword(s):  
Induction Heating ◽  
Output Voltage ◽  
Control Strategies ◽  
Resonant Inverter ◽  
Pulse Density ◽  
Series Resonant ◽  
Density Modulation ◽  
Simulation Results ◽  
Pulse Density Modulation ◽  
Series Resonant Inverter

This paper deals with implementation of a multi-output Series Resonant Inverter(SRI) for induction heating applications, which uses pulse density modulation(PDM) control for full bridge Series resonant inverters for output voltage and power control. It ensures better efficiency performances than conventional control strategies. The proposed converter can be considered as a two output extension of a full bridge inverter. This full bridge inverter can control the two outputs, simultaneously and independently, up to their rated powers, which reduces the usage of number of components as compared with conventional method. It also ensures higher utilization of switches used for its operation. A two output full bridge series resonant inverter is simulated and implemented. The Experimental results are compared with the simulation results.

High Power Density Multi-Mosfet-Based Series Resonant Inverter for Induction Heating Applications

2016 ◽  
Vol 7 (1) ◽  
pp. 107 ◽  
Author(s):  
M. Saravanan ◽  
A. Ramesh Babu
Keyword(s):  
Conversion Efficiency ◽  
Induction Heating ◽  
High Frequency ◽  
Low Voltage ◽  
Resonant Inverter ◽  
Power Simulation ◽  
Series Resonant ◽  
Series Resonant Inverter ◽  
State Resistance ◽  
Practical Constraints

Induction heating application uses uniquely high frequency series resonant inverter for achieving high conversion efficiency. The proposed work focus on improving the practical constraints in requiring the cooling arrangements necessary for switching devices used in resonant inverter due to higher switching and conduction losses. By introducing high frequency Multi- MOSFET based series resonant inverter for the application of induction heating with the following merits such as minimum switching and conduction losses using low voltage grade  of automotive MOSFET’s and higher conversion efficiency with high frequency operation. By adding series combination of low voltage ratedMulti MOSFET switches, temperature variation according to the on-state resistance issues can be avoided by sharing the voltage across the switches depends on number switches connected in the bridge circuit without comprising existing system performance parameter such as THD, power factor, output power. Simulation results also presents to verify that the proposed system achieve higher converter efficiency.

Improved Time Responses of PI & FL Controlled SEPIC Converter based Series Resonant Inverter fed Induction Heating System

2018 ◽  
Vol 9 (1) ◽  
pp. 305
Author(s):  
Muthu Periyasamy ◽  
Chandrahasan Umayal
Keyword(s):  
Induction Heating ◽  
Power Factor ◽  
Closed Loop ◽  
Fuzzy Logic Controller ◽  
Heating System ◽  
Unity Power Factor ◽  
Resonant Inverter ◽  
Series Resonant ◽  
Series Resonant Inverter ◽  
Induction Heating System

This work deals with the Power Factor Corrected Single-Ended Primary Inductor Converter (PFC-SEPIC) based voltage fed closed loop full bridge series resonant induction heating system for household induction heating applications. The output voltage of the front end PFC-SEPIC converter fed series resonant inverter governs the controllers, which may be PI controller or Fuzzy Logic Controller (FLC). The analysis and comparison of time responses are presented in this paper. The PFC-SEPIC converter is used to improve the output power and the THD of source side current are compared for PI and FLC controllers. PFC-SEPIC converter maintains improved current and voltage at unity power factor through the input mains. The SEPIC converter based Voltage Fed Full Bridge Series Resonant Inverter (VFFBSRI) converts the voltage at a frequency of 10 kHz to a level suitable for household induction heating. A 1 kW SEPIC converter based VFFBSRI with RLC load is designed and simulated using MATLAB/ Simulink and hardware is fabricated.

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