EPE Association: EPE 2017 - DS3f: Measurement Techniques

EPE 2017 - DS3f: Measurement Techniques
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2017 ECCE Europe - Conference > EPE 2017 - Topic 03: Measurement and Control > EPE 2017 - DS3f: Measurement Techniques

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   A Smart Distance Power Electronic Measurement Using Smartphone Applications
By MOHANNAD JABBAR MNATI [View]
[Download]

Abstract: The objectives of this article were to design a low-cost three-phase AC voltagemeasurement circuit and new Android smartphone application to monitor the measuring voltage froma safe distance. The smart distance power electronic measurement (SDPEM) system was designed basedon an Arduino UNO R3 board used as a microcontroller to read and calculate the RMS values from athree-phase AC voltage measurement circuit (line-to-line or phase voltage of grid). Following this, themicrocontroller sends the measuring data by Bluetooth to an Android smartphone application. TheBluetooth shield V2.0 was used as a wireless communication instrument between the SDPEM and thesmartphone or tablet application. The smartphone monitoring application was a new applicationdesigned by the open-source developed program (MIT App Inventor 2) to monitor the three-phase ACvoltage results from a safe distance. The safe distance depends on the type of Bluetooth device used.The main advantages of the SDPEM system are low cost and safety.

   Accelerated lifetime testing in small SOC intervals on commercial pouch cells; challenges and countermeasures
By Evelina WIKNER [View]
[Download]

Abstract: A methodology for lifetime testing of lithium-ion batteries in small SOC intervals is presented. The specific test procedure and level of control is important in producing reliable data. The methodology offers high precision without increasing the test duration. The duration time can be reduced with up to 50\\%, by ensuring more continuous cycling and by reducing the number of performance tests.

   Application of Fuzzy Cooperative Coevolution Adaptive Control for Damping of Torsional Vibrations in Multi-Mass Drive System
By Galina L DEMIDOVA [View]
[Download]

Abstract: This paper describes fuzzy cooperative coevolution adaptive control which uses a common genetic algorithm to obtain the coefficients of the adaptive fuzzy regulator. The plant under consideration is multi-mass drive system with elastic couplings. A comparison between systems with fuzzy control and conventional PID- control is considered. It is shown that fuzzy method allows to suppress torsional vibrations occurring at low speeds under the action of 'dry friction' torque if there is only motor position encoder. The effectiveness of proposed algorithm is proved by simulation in MATLAB\Simulink and by the experimental results obtained on the real object.

   Characterization of Power Transistors Intrinsic Parasitics based on 2-Port S-Parameter Measurements
By Cristino SALCINES [View]
[Download]

Abstract: The authors present a low-cost, low-complexity measurement technique based on S-Parameters to characterize the intrinsic capacitances of power transistors at high voltages. In contrast to LCR-meter based standard solutions, which require at least three different measurement fixtures for that purpose, this method requires only one. Thus, measurement time and complexity of the transistor's characterization process is drastically reduced. An analysis of the accuracy of the proposed measurement technique is included, obtaining promising and reliable results.

   Determination of efficiency and thermal properties of drive equipped with induction motor and drive equipped with synchronous reluctance motor
By Andrzej NIEDWOROK [View]
[Download]

Abstract: Comparative tests for efficiency of a drive equipped with reluctance synchronous motor and induction motor is the subject of the paper. Efficiency was determined for drives operating with constant torque. Test results indicate that use of the drive equipped with reluctance synchronous motor offer lower consumption of electric power in relation to the drive equipped with induction motor of the same power. The highest save of electric energy is obtained during operation of a drive equipped with reluctance motor at its rated load. Thermal characteristics of both motors are also presented. The results show that induction motor heated up to higher temperature than reluctance motor.

   Electromagnetic antenna for power electronic modules: towards a real time electromagnetic characterization
By Guillaume VINE [View]
[Download]

Abstract: This study deals with near-field probes integration onto power electronic modules for the magnetic field measurement. In this paper, electromagnetic disturbances characterization is investigated. A loop-antenna-type, its design and its modeling are detailed. The measurement obtained on a buck power converter are presented. An analysis of conducted currents within the power module is developed. Based on them, it is shown that the probe measurements allow recovering the characteristics and the distribution of the electromagnetic disturbances.

   Geometrical Deviation Influences of Variable Reluctance Resolver on the Inverter Losses of an Electrified Drivetrain
By Norbert NEIDIG [View]
[Download]

Abstract: This paper is focused on the analysis of the geometrical deviation of a variable reluctance (VR) Resolver and its impact to the inverter losses for automotive applications. Therefore a VR resolver model is introduced, verified with measurements at a sensor test bench and the additional inverter losses are investigated.

   Heat flux based method for determination of thermal parameters of the cylindrical Li-ion battery: Uncertainty analysis.
By Kirill MURASHKO [View]
[Download]

Abstract: A method for the determination of the thermal parameters of a cylindrical Li-ion battery by using heat flux measurements is analyzed. The method for the determination of the thermal parameters, such as though-plane thermal conductivity and heat capacity, is based on the cylindrical cell battery model, which is explained in detail. The analysis of the applicability of the considered method and its modifications for the thermal parameters determination is based on an uncertainty analysis of the measured parameters. The analysis of the uncertainty showed the possibility to use heat flux measurements for the determination of the cylindrical cell heat capacity with 3.0 \% of uncertainty. The uncertainty of the though-plane thermal conductivity determination was significantly higher, which requires an additional improvement of the considered method for the thermal parameters determination of the cylindrical Li-ion cell

   High Bandwidth Current Sensor with a low Insertion Inductance based on the HOKA Principle
By Nathan TRÖSTER [View]
[Download]

Abstract: This paper presents a broad bandwidth (DC to ~50MHz) current sensor. It is inserted in the currentconducting path and it has a low insertion inductance of about 1 nH due to a coaxial housing. Themeasurement procedure is based on HOKA principle using TMR sensors for the low frequencycapture and a Rogowski coil for the high frequency capture. The HOKA principle combines both byanalog signal processing.

   Improved Transient Response for Wide Input Range of DC-DC Converter with Neural Network Based Digital Controller
By Hidenori MARUTA [View]
[Download]

Abstract: One of the important role for dc-dc converters is to regulate output voltage against the transient variation of input voltage. Recently, renewable energy becomes popular and renewable power generators are connected to the dc power grid directly, dc bus voltage is affected from them. Therefore, the improvement of the transient response against the variation of the dc bus voltage is required to control methods for dc-dc converters. The dc bus variation as the input voltage for dc-dc converters tends to be complicated, a flexible control method is required to improve the performance in the transient state. For such purpose, the digital control technique has potential to realize flexible control methods. In this study, to improve the transient response of a dc-dc converter against such wide input voltage variations, we present a novel neural network based digital control method. The neural network is adopted in coordination with a popular PID control to realize a flexible control by learning the non-linear input-output relation under various input voltage variations. It is well known that the neural network computation causes a computational burden for a widely used digital control unit such as digital signal processor. To address this problem, two different control periods, a slower one for the neural network computational process and a faster one for the conventional PID control process, are used to avoid computational burden in the digital controller in the presented method. Since the neural network works as a predictor, its prediction can be used for the combination with the PID control in the same timing of the faster control period. The evaluation result using a buck type dc-dc converter as a test study shows that the presented method improves the transient response effectively compared with the conventional PID control.

   Method of Digital Filtering of Sine/cosine Incremental Position Encoder Signals for Elimination of DC Offset Impact
By Alecksey ANUCHIN [View]
[Download]

Abstract: This paper deals with the method of elimination of the DC offset impact on the speed estimation system which uses sine/cosine incremental position encoder. The impact of the DC offset in the input signals to the PLL-based speed estimation is shown. The problem can be solved by means of the high-pass filter which should be implemented in the angle domain instead of time domain. The simulation and experimental results are presented. The operation of the filter is correct in the wide range of operation speeds of the drive including zero speed.

   Research on Measurement Technology for Variable Frequency AC Power System
By Shanshui YANG [View]
[Download]

Abstract: Aim at large aircraft power supply which use variable frequency ac power supply and has complex power system structure, the parameters test system needs to store the large amount of data, puts forward a data storage strategy based on the system time; To meet the testing requirements of voltage phase difference, three-phase voltage unbalance and other characteristic parameters, the article designs a measuring way behind on equipment synchronization trigger; Chooses the root mean square method as a means of voltage effective value calculation and analyzes the relationships about the calculation method between each cycle of sampling points and the relative error; Based on multi-channel measurement equivalent model of establishing the multiplexing card, analyzes the causes of errors in signal acquisition and put forward the solutions; Finally, testing on voltage parameters of a certain aircraft variable frequency ac power system, the test results show that the system is stable and reliable, it has reached the design requirements.

   Wide band current transducers using common mode filter chokes
By Alex VAN DEN BOSSCHE [View]
[Download]

Abstract: Dedicated wide band current transformers exist. However, in this paper, an evaluation is made of the characteristics of a current transducer based on a standard available common mode filter inductor. Based on the inductance and resonance frequency, a frequency span of 0.5 Hz up to 50 MHz can be achieved. The performance is possible by the fact that the used amorphous materials have a very high permeability and that the resonances of the windings at high frequency can be controlled. The following limitations are discussed: by saturation at low frequency and DC components, due to the load resistance, due to eddy currents and of the inserted primary conductor.

EPE 2017 - DS3f: Measurement Techniques
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2017 ECCE Europe - Conference > EPE 2017 - Topic 03: Measurement and Control > EPE 2017 - DS3f: Measurement Techniques
	[return to parent folder]

	A Smart Distance Power Electronic Measurement Using Smartphone Applications By MOHANNAD JABBAR MNATI	[View] [Download]
Abstract: The objectives of this article were to design a low-cost three-phase AC voltagemeasurement circuit and new Android smartphone application to monitor the measuring voltage froma safe distance. The smart distance power electronic measurement (SDPEM) system was designed basedon an Arduino UNO R3 board used as a microcontroller to read and calculate the RMS values from athree-phase AC voltage measurement circuit (line-to-line or phase voltage of grid). Following this, themicrocontroller sends the measuring data by Bluetooth to an Android smartphone application. TheBluetooth shield V2.0 was used as a wireless communication instrument between the SDPEM and thesmartphone or tablet application. The smartphone monitoring application was a new applicationdesigned by the open-source developed program (MIT App Inventor 2) to monitor the three-phase ACvoltage results from a safe distance. The safe distance depends on the type of Bluetooth device used.The main advantages of the SDPEM system are low cost and safety.

	Accelerated lifetime testing in small SOC intervals on commercial pouch cells; challenges and countermeasures By Evelina WIKNER	[View] [Download]
Abstract: A methodology for lifetime testing of lithium-ion batteries in small SOC intervals is presented. The specific test procedure and level of control is important in producing reliable data. The methodology offers high precision without increasing the test duration. The duration time can be reduced with up to 50\\%, by ensuring more continuous cycling and by reducing the number of performance tests.

	Application of Fuzzy Cooperative Coevolution Adaptive Control for Damping of Torsional Vibrations in Multi-Mass Drive System By Galina L DEMIDOVA	[View] [Download]
Abstract: This paper describes fuzzy cooperative coevolution adaptive control which uses a common genetic algorithm to obtain the coefficients of the adaptive fuzzy regulator. The plant under consideration is multi-mass drive system with elastic couplings. A comparison between systems with fuzzy control and conventional PID- control is considered. It is shown that fuzzy method allows to suppress torsional vibrations occurring at low speeds under the action of 'dry friction' torque if there is only motor position encoder. The effectiveness of proposed algorithm is proved by simulation in MATLAB\Simulink and by the experimental results obtained on the real object.

	Characterization of Power Transistors Intrinsic Parasitics based on 2-Port S-Parameter Measurements By Cristino SALCINES	[View] [Download]
Abstract: The authors present a low-cost, low-complexity measurement technique based on S-Parameters to characterize the intrinsic capacitances of power transistors at high voltages. In contrast to LCR-meter based standard solutions, which require at least three different measurement fixtures for that purpose, this method requires only one. Thus, measurement time and complexity of the transistor's characterization process is drastically reduced. An analysis of the accuracy of the proposed measurement technique is included, obtaining promising and reliable results.

	Determination of efficiency and thermal properties of drive equipped with induction motor and drive equipped with synchronous reluctance motor By Andrzej NIEDWOROK	[View] [Download]
Abstract: Comparative tests for efficiency of a drive equipped with reluctance synchronous motor and induction motor is the subject of the paper. Efficiency was determined for drives operating with constant torque. Test results indicate that use of the drive equipped with reluctance synchronous motor offer lower consumption of electric power in relation to the drive equipped with induction motor of the same power. The highest save of electric energy is obtained during operation of a drive equipped with reluctance motor at its rated load. Thermal characteristics of both motors are also presented. The results show that induction motor heated up to higher temperature than reluctance motor.

	Electromagnetic antenna for power electronic modules: towards a real time electromagnetic characterization By Guillaume VINE	[View] [Download]
Abstract: This study deals with near-field probes integration onto power electronic modules for the magnetic field measurement. In this paper, electromagnetic disturbances characterization is investigated. A loop-antenna-type, its design and its modeling are detailed. The measurement obtained on a buck power converter are presented. An analysis of conducted currents within the power module is developed. Based on them, it is shown that the probe measurements allow recovering the characteristics and the distribution of the electromagnetic disturbances.

	Geometrical Deviation Influences of Variable Reluctance Resolver on the Inverter Losses of an Electrified Drivetrain By Norbert NEIDIG	[View] [Download]
Abstract: This paper is focused on the analysis of the geometrical deviation of a variable reluctance (VR) Resolver and its impact to the inverter losses for automotive applications. Therefore a VR resolver model is introduced, verified with measurements at a sensor test bench and the additional inverter losses are investigated.

	Heat flux based method for determination of thermal parameters of the cylindrical Li-ion battery: Uncertainty analysis. By Kirill MURASHKO	[View] [Download]
Abstract: A method for the determination of the thermal parameters of a cylindrical Li-ion battery by using heat flux measurements is analyzed. The method for the determination of the thermal parameters, such as though-plane thermal conductivity and heat capacity, is based on the cylindrical cell battery model, which is explained in detail. The analysis of the applicability of the considered method and its modifications for the thermal parameters determination is based on an uncertainty analysis of the measured parameters. The analysis of the uncertainty showed the possibility to use heat flux measurements for the determination of the cylindrical cell heat capacity with 3.0 \% of uncertainty. The uncertainty of the though-plane thermal conductivity determination was significantly higher, which requires an additional improvement of the considered method for the thermal parameters determination of the cylindrical Li-ion cell

	High Bandwidth Current Sensor with a low Insertion Inductance based on the HOKA Principle By Nathan TRÖSTER	[View] [Download]
Abstract: This paper presents a broad bandwidth (DC to ~50MHz) current sensor. It is inserted in the currentconducting path and it has a low insertion inductance of about 1 nH due to a coaxial housing. Themeasurement procedure is based on HOKA principle using TMR sensors for the low frequencycapture and a Rogowski coil for the high frequency capture. The HOKA principle combines both byanalog signal processing.

	Improved Transient Response for Wide Input Range of DC-DC Converter with Neural Network Based Digital Controller By Hidenori MARUTA	[View] [Download]
Abstract: One of the important role for dc-dc converters is to regulate output voltage against the transient variation of input voltage. Recently, renewable energy becomes popular and renewable power generators are connected to the dc power grid directly, dc bus voltage is affected from them. Therefore, the improvement of the transient response against the variation of the dc bus voltage is required to control methods for dc-dc converters. The dc bus variation as the input voltage for dc-dc converters tends to be complicated, a flexible control method is required to improve the performance in the transient state. For such purpose, the digital control technique has potential to realize flexible control methods. In this study, to improve the transient response of a dc-dc converter against such wide input voltage variations, we present a novel neural network based digital control method. The neural network is adopted in coordination with a popular PID control to realize a flexible control by learning the non-linear input-output relation under various input voltage variations. It is well known that the neural network computation causes a computational burden for a widely used digital control unit such as digital signal processor. To address this problem, two different control periods, a slower one for the neural network computational process and a faster one for the conventional PID control process, are used to avoid computational burden in the digital controller in the presented method. Since the neural network works as a predictor, its prediction can be used for the combination with the PID control in the same timing of the faster control period. The evaluation result using a buck type dc-dc converter as a test study shows that the presented method improves the transient response effectively compared with the conventional PID control.

	Method of Digital Filtering of Sine/cosine Incremental Position Encoder Signals for Elimination of DC Offset Impact By Alecksey ANUCHIN	[View] [Download]
Abstract: This paper deals with the method of elimination of the DC offset impact on the speed estimation system which uses sine/cosine incremental position encoder. The impact of the DC offset in the input signals to the PLL-based speed estimation is shown. The problem can be solved by means of the high-pass filter which should be implemented in the angle domain instead of time domain. The simulation and experimental results are presented. The operation of the filter is correct in the wide range of operation speeds of the drive including zero speed.

	Research on Measurement Technology for Variable Frequency AC Power System By Shanshui YANG	[View] [Download]
Abstract: Aim at large aircraft power supply which use variable frequency ac power supply and has complex power system structure, the parameters test system needs to store the large amount of data, puts forward a data storage strategy based on the system time; To meet the testing requirements of voltage phase difference, three-phase voltage unbalance and other characteristic parameters, the article designs a measuring way behind on equipment synchronization trigger; Chooses the root mean square method as a means of voltage effective value calculation and analyzes the relationships about the calculation method between each cycle of sampling points and the relative error; Based on multi-channel measurement equivalent model of establishing the multiplexing card, analyzes the causes of errors in signal acquisition and put forward the solutions; Finally, testing on voltage parameters of a certain aircraft variable frequency ac power system, the test results show that the system is stable and reliable, it has reached the design requirements.

	Wide band current transducers using common mode filter chokes By Alex VAN DEN BOSSCHE	[View] [Download]
Abstract: Dedicated wide band current transformers exist. However, in this paper, an evaluation is made of the characteristics of a current transducer based on a standard available common mode filter inductor. Based on the inductance and resonance frequency, a frequency span of 0.5 Hz up to 50 MHz can be achieved. The performance is possible by the fact that the used amorphous materials have a very high permeability and that the resonances of the windings at high frequency can be controlled. The following limitations are discussed: by saturation at low frequency and DC components, due to the load resistance, due to eddy currents and of the inserted primary conductor.