EPE Association: EPE 2014 - LS1f: Measurements Techniques

EPE 2014 - LS1f: Measurements Techniques
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2014 ECCE Europe - Conference > EPE 2014 - Topic 03: Measurement and Control > EPE 2014 - LS1f: Measurements Techniques

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   Current measurement and short-circuit protection of an IGBT based on module parasitics
By Markus OINONEN, Matti LAITINEN, Jorma KYYRÄ [View]
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Abstract: In this paper, a short-circuit protection of an IGBT, based on current measurement is proposed. The IGBT collector current estimate is obtained by filtering the voltage between the auxiliary emitter and the power emitter terminals of an IGBT module. The proposed scheme utilizes a large bandwidth analog circuit which enables to the detect fault current regardless of the current slope. According to the experiments, the proposed circuit can detect faults before desaturation of the IGBT, which is a major benefit compared to the traditional methods based on IGBT saturation voltage measurement.

   Intelligent Power Management Device for Street Lighting Control Incorporating Long Range Static and Non-Static Hybrid Infrared Detection System
By Leslie Robert ADRIAN, Leonids RIBICKIS [View]
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Abstract: Intelligent street lighting, along with its immense energy saving potential, relies upon many factors, not least, the importance of maintaining useable levels of light for both vehicles and pedestrian traffic. One element in the establishment of such a regime is the development of sensory equipment capable of vehicle and human detection with a negligible degree of error. The paper proposes a hybrid long range passive sensory system based on both static (IR Photodiode) and non-static (PIR) sensors.

   Sensorless Pressure Calculation for Parallel Redundancy in Pumping Systems
By Ilja BAKMAN, Valery VODOVOZOV [View]
[Download]

Abstract: A converter-fed system with dubbed feedback is proposed for pumping applications. Increased reliability is provided by an alternative way of the pressure estimation using the information about the process state variables of a frequency converter and the model built on the principles of hydrodynamics. The system can be used for monitoring and fault detection of the pressure transducer, which serves as the primary feedback source. Along with the pressure transducer, the pressure is calculated using the data obtained from the frequency converter of the variable speed drive. An effective computation algorithm was developed in the paper. The testing methodology, test setup, and trial results are described. While the pressure transducer works correctly, its information is used for control whereas in the case of a faulty situation, the system switches to the sensorless control and the fault signal appears. The benefits and drawbacks of the proposed pumping system with dubbed pressure feedback are discussed.

   Some considerations for miniaturized measurement shunts in high frequency power electronic converters
By Andrew JOANNOU, Jacobus Daniel VAN WYK, David PENTZ [View]
[Download]

Abstract: Power semi-conductors are able to achieve switching transients within a few nanoseconds and possibly even faster. These fast switching transients will need to be measured and analyzed thoroughly. In this paper four different types of shunt constructions and installations are tested on the same power electronics circuit, giving widely diverse results. Interpreting and analyzing these measurement results will assist in developing accurate current measurement devices for fast switching transient power electronic converters of the future.

EPE 2014 - LS1f: Measurements Techniques
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2014 ECCE Europe - Conference > EPE 2014 - Topic 03: Measurement and Control > EPE 2014 - LS1f: Measurements Techniques
	[return to parent folder]

	Current measurement and short-circuit protection of an IGBT based on module parasitics By Markus OINONEN, Matti LAITINEN, Jorma KYYRÄ	[View] [Download]
Abstract: In this paper, a short-circuit protection of an IGBT, based on current measurement is proposed. The IGBT collector current estimate is obtained by filtering the voltage between the auxiliary emitter and the power emitter terminals of an IGBT module. The proposed scheme utilizes a large bandwidth analog circuit which enables to the detect fault current regardless of the current slope. According to the experiments, the proposed circuit can detect faults before desaturation of the IGBT, which is a major benefit compared to the traditional methods based on IGBT saturation voltage measurement.

	Intelligent Power Management Device for Street Lighting Control Incorporating Long Range Static and Non-Static Hybrid Infrared Detection System By Leslie Robert ADRIAN, Leonids RIBICKIS	[View] [Download]
Abstract: Intelligent street lighting, along with its immense energy saving potential, relies upon many factors, not least, the importance of maintaining useable levels of light for both vehicles and pedestrian traffic. One element in the establishment of such a regime is the development of sensory equipment capable of vehicle and human detection with a negligible degree of error. The paper proposes a hybrid long range passive sensory system based on both static (IR Photodiode) and non-static (PIR) sensors.

	Sensorless Pressure Calculation for Parallel Redundancy in Pumping Systems By Ilja BAKMAN, Valery VODOVOZOV	[View] [Download]
Abstract: A converter-fed system with dubbed feedback is proposed for pumping applications. Increased reliability is provided by an alternative way of the pressure estimation using the information about the process state variables of a frequency converter and the model built on the principles of hydrodynamics. The system can be used for monitoring and fault detection of the pressure transducer, which serves as the primary feedback source. Along with the pressure transducer, the pressure is calculated using the data obtained from the frequency converter of the variable speed drive. An effective computation algorithm was developed in the paper. The testing methodology, test setup, and trial results are described. While the pressure transducer works correctly, its information is used for control whereas in the case of a faulty situation, the system switches to the sensorless control and the fault signal appears. The benefits and drawbacks of the proposed pumping system with dubbed pressure feedback are discussed.

	Some considerations for miniaturized measurement shunts in high frequency power electronic converters By Andrew JOANNOU, Jacobus Daniel VAN WYK, David PENTZ	[View] [Download]
Abstract: Power semi-conductors are able to achieve switching transients within a few nanoseconds and possibly even faster. These fast switching transients will need to be measured and analyzed thoroughly. In this paper four different types of shunt constructions and installations are tested on the same power electronics circuit, giving widely diverse results. Interpreting and analyzing these measurement results will assist in developing accurate current measurement devices for fast switching transient power electronic converters of the future.