scholarly journals An Efficient Power Control Technique for High-Frequency Resonant Inverter in Induction Heating System

2018 ◽  
Vol 8 (6) ◽  
pp. 3530-3535
Author(s):  
A. Kumar ◽  
D. Sarkar ◽  
P. K. Sadhu
Keyword(s):  
Power Control ◽  
Output Power ◽  
Induction Heating ◽  
High Frequency ◽  
Average Power ◽  
Control Technique ◽  
Average Output ◽  
Resonant Inverter ◽  
Wide Range ◽  
Bus Voltage

An efficacious and reliable power control technique has been developed which can be used to regulate the output power of a high-frequency full bridge series resonant inverter (HF-FBSRI) in an induction heating (IH) system. In this paper, a modified buck-boost converter is presented to control the DC link/bus voltage which maintains the IH system under resonant mode and optimizes the performance of the IH system. Controlled DC link/bus voltage has been applied to this HF- FBSRI to control the average output power in the IH system. Using this aimed control technique, a wide range of output powers has been controlled and consistent performance of the IH system has been achieved. ZVS switching technique has been used to reduce the switching losses. Varying average power has been obtained at different duty cycles ranging from 0.2 to 0.8 with variable DC link voltage and it has been corroborated using PSIM environment for an IH system rated at 5500W.

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.

New Control Strategy for High-Frequency Digital Inverter Power Supply

2013 ◽  
Vol 772 ◽  
pp. 443-447
Author(s):  
Yi Wang Wang
Keyword(s):  
Induction Heating ◽  
Control Strategy ◽  
Power Supply ◽  
High Frequency ◽  
Effective Control ◽  
Strong Nonlinearity ◽  
Wide Range ◽  
Inverter Power Supply ◽  
Control Technologies ◽  
High Frequency Induction

The inverter power supply system has strong nonlinearity and parameter variability, especially in the non-linear loads, conventional control technology is difficult to achieve effective control and get the ideal control effect. Aiming at the control requirements of single-phase high-frequency induction heating inverter supply power control applications, uses a novel multiple and composite control technologies to achieve rapid power modulation control of inverter. The components and design principles of proposed control system were introduced in detail. The inverter power system model based on the new control strategy has been built, and inverter prototype used for high-frequency induction heating was designed. The experimental results show that the proposed control method to obtain better dynamic characteristics than the conventional control technologies, and has good advantages of system steady-state accuracy, robustness and control qualities, which has wide range of application.

EMBEDDED CONTROLLED PULSE CONVERTER FED INDUCTION HEATER

2010 ◽  
Vol 19 (03) ◽  
pp. 581-595 ◽  
Author(s):  
D. KIRUBAKARAN ◽  
S. RAMA REDDY
Keyword(s):  
Output Power ◽  
Induction Heating ◽  
Pulse Current ◽  
Heating Process ◽  
Switching Frequency ◽  
Wide Range ◽  
Power Switches ◽  
Bridge Rectifier ◽  
Current Converter ◽  
Pulse Converter

A pulse-current converter topology for induction heating is simulated and implemented. The possibility and expediency of the pulse current for induction heating have been demonstrated. The converter comprises the input filter, input reactor, bridge rectifier, two power switches, two coils mutually coupled with the input reactor and the heating inductor (load), where the output power is controlled by a switching frequency. The steady-state analysis of the converter operation and its computer simulation has been performed. The simulation on the computer are shown to be in good agreement with the theoretical results. The following two goals have been achieved: (a) the analysis of the heating process with the pulse current has been performed; and (b) the appropriate scheme of the pulse-current supply has been developed. The scheme fulfills the requirements of modern power supplies: sine form of the input current, unity power factor, soft commutation and a wide range of output power. This configuration can be used for heating, annealing, melting and hardening in the power range of 250–300 kW.

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