Design of the <i>L</i>-<i>LC</i> Resonant Inverter for Induction Heating Based on Its Equivalent SRI

Espı́, J.M.; Santamaria, E.J. Dede Garcia; Garcı́a-Gil, R.; Castelló, J.

doi:10.1109/tie.2007.905928

Cited by 73 publications

(48 citation statements)

References 18 publications

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“…Maximum current gain (equal to ) is observed for operation at the proposed operating point = 1. The characteristics and design of L-LC RI for IH applications operating at = = √(1 + )/ have been reported extensively in the literature [15][16][17][18][19][20][21]. At this operating point,…”

Section: Analysis Of L-lc Cnmentioning

confidence: 99%

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A 25 kW, 25 kHz Induction Heating Power Supply for MOVPE System Using L-LC Resonant Inverter

Borage

Tiwari

2013

Advances in Power Electronics

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A topology named L-LC resonant inverter (RI) for induction heating (IH) applications takes most of the merits of the conventional series and parallel resonant schemes, while eliminating their limitations. In this paper, fundamental frequency AC analysis of L-LC RI is revisited, and a new operating point is suggested featuring enhanced current gain and near in-phase operation as compared to the conventional operating point. An approximate analysis of the circuit with square-wave voltage source is also described highlighting the effect of auxiliary inductor on the source current waveform. The analysis also leads to an optimum choice of the auxiliary inductance. The requirements of the metal organic vapour phase epitaxy (MOVPE) system in which a graphite susceptor is required to be heated to 1200 ∘ C demanding a 25 kW, 25 kHz IH power supply, the configuration of developed IH system, and experimental results are presented.

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Section: Analysis Of L-lc Cnmentioning

confidence: 99%

“…A topology named L-LC RI has been proposed for IH applications [14][15][16][17][18][19][20][21], which takes most of the merits of SRI and PRI while eliminating their limitations. It operates with input dc voltage source, thereby eliminating bulky input current smoothening inductor.…”

Section: Introductionmentioning

confidence: 99%

A 25 kW, 25 kHz Induction Heating Power Supply for MOVPE System Using L-LC Resonant Inverter

Borage

Tiwari

2013

Advances in Power Electronics

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“…The voltage source inverters with resonant parallel load are used successfully in medium and high frequency induction heating systems [1]- [5]. The replacement of the current source inverters has been facilitated by both the existence on the market of the high power insulated-gate bipolar transistors (IGBTs) and the advantages of voltage source inverters [3], [5], [6].…”

Section: Introductionmentioning

confidence: 99%

“…As the control system handles the operation of the induction coil in parallel with a compensation capacitor at the desired resonant frequency, the current through the induction coil is forced to be sinusoidal. In practice, the parallel resonant circuit is damped when the work piece is inserted into the induction coil by introducing additional losses into the system and increasing the current drawn from the inverter [1], [3], [5], [7]. In order to obtain the auto-adaptation at the frequency required for zero current switching, the authors proposed an original method that has been successfully implemented.…”

Section: Introductionmentioning

confidence: 99%

Shift phase power control in induction heating systems with voltage resonant inverter

Bitoleanu

Popescu

Suru

2014

2014 International Conference on Applied and Theoretical Electricity (ICATE)

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This paper is concerned with the design of the power control system for a single-phase voltage source inverter feeding a parallel resonant induction heating load using shiftphase inverter control. The control of the inverter output current, meaning the active component of the current through the induction coil when the control frequency is equal or slightly exceeds the resonant frequency, is achieved by a Proportional-Integral controller tuned in accordance with the Modulus Optimum criterion in Kessler variant. Next are presented different experimental tests performed in order to determine the performances of induction heating system. The objectives of the tests were: the verification of the proper operation of the current through inverter control loop and the verification of the control of the power transmitted to the load by adjusting the inverter frequency.

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“…The three outputs variables (ΔK P , ΔK I , ΔK D ) will tune the proportional, integral and derivative gains (K P , K I , K D ) of the PID controller. All the variables are divided into fuzzy sets [9]. Triangular membership function has been considered for this research work.…”

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confidence: 99%

A Fuzzy PID Controller for Induction Heating Systems with LLC Voltage Source Inverter

Chakrabarti

Sadhu

Chakraborty

et al. 2017

IJPEDS

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The Proportional-Integral-Derivative (PID) controller is the most popular control strategy in the process industry. The popularity can be attributed to its simplicity, better control performance and excellent robustness to uncertainties that is found through the research work on such controllers so far. This paper presents the design and tuning of a PID controller using Fuzzy logic for industrial induction heating systems with LLC voltage source inverter for controlling the induction heating power. The paper also compares the performance of the Fuzzy PID controller with that of a conventional PID controller for the same system. The system and the controllers are simulated in MATLAB/SIMULINK. The results show the effectiveness and superiority of the proposed Fuzzy PID controller. Keyword:Fuzzification Fuzzy PID controller Induction heating LLC Voltage source inverter Copyright © 2017 Institute of Advanced Engineering and Science.All rights reserved. Corresponding Author:Arijit Chakrabarti, Department of Electrical Engineering, Indian Institute of Technology (ISM), Dhanbad -826004, Jharkhand, India. Email: a.chakra2010@gmail.com INTRODUCTIONInduction heating is one of the precise and fastest heating methods in domestic, medical and industrial applications [1]. A high frequency electrical power source and a work coil (inductor) that generates the alternating magnetic field are required to implement an induction heating system. The coil is included in series or parallel resonant tank circuits to minimize the loss in the supply resonant inverter. These days, the focus is on development of control strategies for controlling the output power of the induction heating systems by leveraging high switching frequencies with series resonant inverters, parallel quasi resonant inverters [2]-[3], while eliminating the switching loss of semiconductor devices through soft switching.The Proportional-Integral-Derivative (PID) controllers are widely used in induction heating systems [4]- [5]. With such conventional PID controllers, it is difficult to achieve the desired control results. So, in this paper, fuzzy logic has been used to set the control parameters of a PID controller to achieve a self-tuned Fuzzy PID power controller for the induction heating system. The performances of conventional PID controller and Fuzzy PID controller have been studied in this paper. The Fuzzy PID controller appears to be a better controller for the induction heating system. This paper is organized into following sections: Section 2 describes the system configuration for the induction heating system. Section 3 discusses about the controllers. Section 4 outlines the simulation and results. This paper is concluded in Section 5.

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Design of the L-LC Resonant Inverter for Induction Heating Based on Its Equivalent SRI

Cited by 73 publications

References 18 publications

A 25 kW, 25 kHz Induction Heating Power Supply for MOVPE System Using L-LC Resonant Inverter

A 25 kW, 25 kHz Induction Heating Power Supply for MOVPE System Using L-LC Resonant Inverter

Shift phase power control in induction heating systems with voltage resonant inverter

A Fuzzy PID Controller for Induction Heating Systems with LLC Voltage Source Inverter

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