EPE Association: EPE 1995 - 14 - Lecture Session L4b: SPECIAL POWER SUPPLIES

EPE 1995 - 14 - Lecture Session L4b: SPECIAL POWER SUPPLIES
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1995 - Conference > EPE 1995 - 14 - Lecture Session L4b: SPECIAL POWER SUPPLIES

   [return to parent folder]

   Novel Electromagnetic Induction-Heated Type Fluid-Heating Processing Appliance Incorporating Auto-tuning PID Control based PWM Resonant IGBT Inverter
By Y. Uchihori; Y. Kawamura; H. Yasutsune; Guo Bin; M. Nakaoka [View]
[Download]

Abstract: This paper describes a newly-developed prototype of an electromagnetic induction flow-through metallic package-in-nonmetallic pipeline type fluid heating appliance, which is composed of series-loaded resonant phase-shift PWM inverter using IGBT modules in addition to an auto-tuning PID controller based the feedback implementation. This inverter-fed fluid heating appliance is to be more acceptable for high-quality heat energy transfer and delivery processing under a precise temperature management, as well as heat-energy storage and heat exchange processing plants as vessel and tank fluid heating in the pipeline systems, because of clean rocessing, high-efficient, compactness in volumetric size, high-relaibility, and best-matched control ability. The remarkable salient features of this inverter-fed fluid-heating appliance are presented as compared with the conventional electric heating methods. Its operating characteristics in steady-state are illustrated and evaluated in experiment and its computer simulation results. The promising applications of this fluid heating appliance are mentioned in this paper.

   DESIGN OF THE DELAY LINE POWER SUPPLY OF A TWT
By C. Blanco; M. A. Perez; M. Rico; J. Uceda [View]
[Download]

Abstract: This paper presents the study and the design of a high voltage dc-to-dc resonant converter to implement a high-voltage power supply for a TWT. This converter integrates parasitic elements of the high-voltage transformer (HVT) into the power topology. A special structure (star-core) of HVT has been implemented. Moreover, control is reliable and several protections have been implemented.

   NEW CONSTANT-FREQUENCY VARIABLE POWERED QUASI-RESONANT INVERTER TOPOLOGY USING SOFT-SWITCHED TYPE IGBTS FOR INDUCTION-HEATED COOKING APPLIANCE
By K Izaki; I. Hirota; H. Yamashita; M. Kamli; H. Omori; M. Nakaoka [View]
[Download]

Abstract: This paper describes a new constant-frequency variable power (CFVP) high-frequency load-resonant half-bridge inverter operating at soft-switched PWM scheme and using the latest developed IGBTs for soft-switching. This type of quasi-resonant soft-switched inverter is more suitable for small scale induction-heating cooking appliances with two or more burners. The operating principle of this inverter circuit and its power regulation characteristics are presented on the basis of computer-aided simulation analysis and experimental results. The proposed quasi resonant inverter system configuration has the significant advantage of being capable of suppressing the irritating acoustic noise generated from the cooking burners composed of multiple load-resonant inverters. Furthermore, this quasi-resonant half-bridge type inverter using a reverse blocking power switch (IGBT) and a reverse conducting one has many attractive features including lowered switching losses, reduced electrical dynamic stresses, considerable reduction of EMI noise level, snubberless arrangement, high-efficiency, lighter weight, lower cost, high-power capability, easy regulation of output power at a fixed operating frequency and harmful acoustic beat interference noise. The experimental verifications of the soft-switched PWM quasi-resonant half-bridge inverter with CFVP function operating under unity power factor correction and sinewave line current shaping, were carried out and evaluated from a practical point of view.

   GENERALISED COMPANION SWITCH AND LINK MODELS FOR POWER ELECTRONIC CIRCUIT SIMULATION
By K. K. Fung; S. Y. R. Hui [View]
[Download]

Abstract: This paper describes a generalised switch model and a link model based on the companion models. The switch model enables a switching circuit to be modelled by a constant admittance matrix irrespective of its switching state. This feature allows a system with changing topology to be modelled efficiently and elegantly by one set of model equation, and a reduction of circuit formulation and computing time. The link model enables a large circuit to be decoupled into many small sub-circuits for easy circuit formulation and fast simulation. Simulation and experimental results confirm the validity of the companion switch and link models.

EPE 1995 - 14 - Lecture Session L4b: SPECIAL POWER SUPPLIES
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1995 - Conference > EPE 1995 - 14 - Lecture Session L4b: SPECIAL POWER SUPPLIES
	[return to parent folder]

	Novel Electromagnetic Induction-Heated Type Fluid-Heating Processing Appliance Incorporating Auto-tuning PID Control based PWM Resonant IGBT Inverter By Y. Uchihori; Y. Kawamura; H. Yasutsune; Guo Bin; M. Nakaoka	[View] [Download]
Abstract: This paper describes a newly-developed prototype of an electromagnetic induction flow-through metallic package-in-nonmetallic pipeline type fluid heating appliance, which is composed of series-loaded resonant phase-shift PWM inverter using IGBT modules in addition to an auto-tuning PID controller based the feedback implementation. This inverter-fed fluid heating appliance is to be more acceptable for high-quality heat energy transfer and delivery processing under a precise temperature management, as well as heat-energy storage and heat exchange processing plants as vessel and tank fluid heating in the pipeline systems, because of clean rocessing, high-efficient, compactness in volumetric size, high-relaibility, and best-matched control ability. The remarkable salient features of this inverter-fed fluid-heating appliance are presented as compared with the conventional electric heating methods. Its operating characteristics in steady-state are illustrated and evaluated in experiment and its computer simulation results. The promising applications of this fluid heating appliance are mentioned in this paper.

	DESIGN OF THE DELAY LINE POWER SUPPLY OF A TWT By C. Blanco; M. A. Perez; M. Rico; J. Uceda	[View] [Download]
Abstract: This paper presents the study and the design of a high voltage dc-to-dc resonant converter to implement a high-voltage power supply for a TWT. This converter integrates parasitic elements of the high-voltage transformer (HVT) into the power topology. A special structure (star-core) of HVT has been implemented. Moreover, control is reliable and several protections have been implemented.

	NEW CONSTANT-FREQUENCY VARIABLE POWERED QUASI-RESONANT INVERTER TOPOLOGY USING SOFT-SWITCHED TYPE IGBTS FOR INDUCTION-HEATED COOKING APPLIANCE By K Izaki; I. Hirota; H. Yamashita; M. Kamli; H. Omori; M. Nakaoka	[View] [Download]
Abstract: This paper describes a new constant-frequency variable power (CFVP) high-frequency load-resonant half-bridge inverter operating at soft-switched PWM scheme and using the latest developed IGBTs for soft-switching. This type of quasi-resonant soft-switched inverter is more suitable for small scale induction-heating cooking appliances with two or more burners. The operating principle of this inverter circuit and its power regulation characteristics are presented on the basis of computer-aided simulation analysis and experimental results. The proposed quasi resonant inverter system configuration has the significant advantage of being capable of suppressing the irritating acoustic noise generated from the cooking burners composed of multiple load-resonant inverters. Furthermore, this quasi-resonant half-bridge type inverter using a reverse blocking power switch (IGBT) and a reverse conducting one has many attractive features including lowered switching losses, reduced electrical dynamic stresses, considerable reduction of EMI noise level, snubberless arrangement, high-efficiency, lighter weight, lower cost, high-power capability, easy regulation of output power at a fixed operating frequency and harmful acoustic beat interference noise. The experimental verifications of the soft-switched PWM quasi-resonant half-bridge inverter with CFVP function operating under unity power factor correction and sinewave line current shaping, were carried out and evaluated from a practical point of view.

	GENERALISED COMPANION SWITCH AND LINK MODELS FOR POWER ELECTRONIC CIRCUIT SIMULATION By K. K. Fung; S. Y. R. Hui	[View] [Download]
Abstract: This paper describes a generalised switch model and a link model based on the companion models. The switch model enables a switching circuit to be modelled by a constant admittance matrix irrespective of its switching state. This feature allows a system with changing topology to be modelled efficiently and elegantly by one set of model equation, and a reduction of circuit formulation and computing time. The link model enables a large circuit to be decoupled into many small sub-circuits for easy circuit formulation and fast simulation. Simulation and experimental results confirm the validity of the companion switch and link models.