EPE Association: EPE 2018 - LS6c: Industry specific Energy Conversion and Conditioning Technologies

EPE 2018 - LS6c: Industry specific Energy Conversion and Conditioning Technologies
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2018 ECCE Europe - Conference > EPE 2018 - Topic 09: Industry-Specific Energy Conversion and Conditioning Technologies > EPE 2018 - LS6c: Industry specific Energy Conversion and Conditioning Technologies

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   Analysis on short-circuit protection in battery powered marine vessel with DC distribution system
By Jani ALHO [View]
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Abstract: A short-circuit protection method in a vessel DC distribution system was analyzed to ensure the safety of the system in DC short-circuit cases. The system is sourced by batteries and the grid is powered by power electronic converters. The loads in the system consist of the propulsion inverters and islanded converters. Time-domain simulations are proposed as the methodology of analysis for short-circuit protection and as the component dimensioning and design verification tool. The simulation was verified to provide accurate estimation of the short-circuit events and the system behavior.

   Application of Automatic Resonant Frequency Tuning Circuit to Induction Heating System
By Koki KAMAEGUCHI [View]
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Abstract: Induction heating is the technique that heats the conductive material by high frequency large AC magnetic field. For efficient generation of the AC magnetic field, induction heating technique commonly utilizes the resonance between the heating coil and the resonating capacitor. The resonance is generally excited by applying the AC voltage of the resonant frequency. However, the resonant frequency is unstable because this frequency is susceptible to the disposition of the material to be heated. As a result, high efficiency high power induction heating system often suffers from unstable operation. This paper addresses this problem by proposing application of a simple automatic resonant frequency tuning circuit to the induction heating. This circuit can automatically achieve equivalent adjustment of the resonance frequency at the operating frequency without special control or the circuit sensing. In addition, this paper elucidated the control method of this tuning circuit to achieve the soft-switching operation in both of the inverter that drives the heating coil and the tuning circuit itself. The experiment revealed successful stabilization of the resonant frequency as well as satisfaction of the soft-switching condition both of the inverter and the tuning circuit, supporting effectiveness of the tuning circuit for induction heating.

   On Faults and Diagnostics in Electrified Hydraulic Actuator Systems
By Pablo CASTRO PALAVICINO [View]
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Abstract: This paper presents an overview of fault modes and diagnostics techniques in electrified hydraulic actuators. Electrified hydraulic actuators tend to be complex systems as they consist of several components including hydraulics, electric motors, and power electronic drives. Many actuator systems work in harsh environments which makes sensing, control, and diagnostics challenging. If any of the components of the electrified hydraulic system fails, then the entire system can either lose or shuts down. This is critical and costly for many applications such as industrial, mobile, and aerospace hydraulic systems. This paper aims to provide a broad review of the faults and diagnostics of the electrified hydraulic actuator systems.

   Output Voltage Ripple Analysis for Modular Series Parallel Resonant Converter Systems with Capacitive Output Filter
By Michael JARITZ [View]
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Abstract: In this paper, an analysis of the output voltage ripple of modular series parallel resonant converter systems with capacitive output filter is presented. An analytical description of the output voltage ripple of output series, output parallel as well as output parallel-output series connections of series parallel resonant converter basic modules is given. The derived equations can be used for investigating the voltage ripple due to component tolerances and non-optimal interleaving angles. The analytical results obtained by simulations and calculations match well with the measurement results. The verification of the determined equations is performed for different switching frequencies over the full range of possible interleaving angles. The measured results also match well for the time dependent waveforms.

EPE 2018 - LS6c: Industry specific Energy Conversion and Conditioning Technologies
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2018 ECCE Europe - Conference > EPE 2018 - Topic 09: Industry-Specific Energy Conversion and Conditioning Technologies > EPE 2018 - LS6c: Industry specific Energy Conversion and Conditioning Technologies
	[return to parent folder]

	Analysis on short-circuit protection in battery powered marine vessel with DC distribution system By Jani ALHO	[View] [Download]
Abstract: A short-circuit protection method in a vessel DC distribution system was analyzed to ensure the safety of the system in DC short-circuit cases. The system is sourced by batteries and the grid is powered by power electronic converters. The loads in the system consist of the propulsion inverters and islanded converters. Time-domain simulations are proposed as the methodology of analysis for short-circuit protection and as the component dimensioning and design verification tool. The simulation was verified to provide accurate estimation of the short-circuit events and the system behavior.

	Application of Automatic Resonant Frequency Tuning Circuit to Induction Heating System By Koki KAMAEGUCHI	[View] [Download]
Abstract: Induction heating is the technique that heats the conductive material by high frequency large AC magnetic field. For efficient generation of the AC magnetic field, induction heating technique commonly utilizes the resonance between the heating coil and the resonating capacitor. The resonance is generally excited by applying the AC voltage of the resonant frequency. However, the resonant frequency is unstable because this frequency is susceptible to the disposition of the material to be heated. As a result, high efficiency high power induction heating system often suffers from unstable operation. This paper addresses this problem by proposing application of a simple automatic resonant frequency tuning circuit to the induction heating. This circuit can automatically achieve equivalent adjustment of the resonance frequency at the operating frequency without special control or the circuit sensing. In addition, this paper elucidated the control method of this tuning circuit to achieve the soft-switching operation in both of the inverter that drives the heating coil and the tuning circuit itself. The experiment revealed successful stabilization of the resonant frequency as well as satisfaction of the soft-switching condition both of the inverter and the tuning circuit, supporting effectiveness of the tuning circuit for induction heating.

	On Faults and Diagnostics in Electrified Hydraulic Actuator Systems By Pablo CASTRO PALAVICINO	[View] [Download]
Abstract: This paper presents an overview of fault modes and diagnostics techniques in electrified hydraulic actuators. Electrified hydraulic actuators tend to be complex systems as they consist of several components including hydraulics, electric motors, and power electronic drives. Many actuator systems work in harsh environments which makes sensing, control, and diagnostics challenging. If any of the components of the electrified hydraulic system fails, then the entire system can either lose or shuts down. This is critical and costly for many applications such as industrial, mobile, and aerospace hydraulic systems. This paper aims to provide a broad review of the faults and diagnostics of the electrified hydraulic actuator systems.

	Output Voltage Ripple Analysis for Modular Series Parallel Resonant Converter Systems with Capacitive Output Filter By Michael JARITZ	[View] [Download]
Abstract: In this paper, an analysis of the output voltage ripple of modular series parallel resonant converter systems with capacitive output filter is presented. An analytical description of the output voltage ripple of output series, output parallel as well as output parallel-output series connections of series parallel resonant converter basic modules is given. The derived equations can be used for investigating the voltage ripple due to component tolerances and non-optimal interleaving angles. The analytical results obtained by simulations and calculations match well with the measurement results. The verification of the determined equations is performed for different switching frequencies over the full range of possible interleaving angles. The measured results also match well for the time dependent waveforms.