EPE Association: EPE 2017 - DS1g: Estimation and Identification Methods

EPE 2017 - DS1g: Estimation and Identification Methods
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2017 ECCE Europe - Conference > EPE 2017 - Topic 04: Electrical Machines and Drive Systems > EPE 2017 - DS1g: Estimation and Identification Methods

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   A Novel Symmetrical Carrier PWM Based Sensorless Drives for Audible Noise Reduction with Switching Frequencies up to 16kHz
By SARI MAEKAWA [View]
[Download]

Abstract: Recently, the demand of the position sensorless control is increasing in motor drive. At low speed range, the saliency-based methods are proposed. In this paper, using the modified symmetrical carrier PWM with switching frequencies up to 16kHz, we achieve to reduce the audible noise that human can be heard.

   Considerations for a high-speed PMSM drive featuring a GaN-ANPC inverter
By Heikki JÄRVISALO [View]
[Download]

Abstract: Gallium nitride (GaN) switches have superior switching performance when compared to the traditionalSi technology. Therefore, GaN switches are an appealing option for power converters and electricaldrives. In this paper, considerations for a high-speed electrical drive with inverter switching frequencyof 1 MHz are presented, along with simulation results of the motor control of the drive.

   Dynamic Operation of FOC Induction Machines Under Current and Voltage Constraints
By Alexander POPOV [View]
[Download]

Abstract: This paper analyzes the dynamic performance of FOC induction machines operating under current andvoltage constraints. FOC rely on the proper performance of the inner current control loops. Thecapability of the machine to increase its torque can be seriously compromised due to the inverter voltageand current limits, which affect to the current regulator transient response. This can be especially criticalin machines controlled to operate with reduced rotor flux to increase their efficiency.

   Implementation and verification of the PMSM stator interturn short fault detection algorithm
By Lukas OTAVA [View]
[Download]

Abstract: This paper discusses the stator winding interturn short fault detection for three phase Permanent Magnet Synchronous Machines (PMSMs). The implementation of the Extended Kalman filter (EKF)-based fault detection algorithm is discussed. The implemented algorithm was verified with the emulated fault during different operating conditions of the drive. Measurements on a real PMSM and the implementation verification are the most important objectives of the article.

   Modeling the impact of rotor movement on non-linearity of motor currents waveforms in high-speed PMSM drives
By Leszek JARZEBOWICZ [View]
[Download]

Abstract: Motor current measurement techniques as well as predictive control algorithms for electric drives rely on an assumption of linear motor currents changes resulting from constant inverter output voltages. Recent research has reported that this assumption does not hold in motors with short electrical time constant, and in drives whose rotor position advances substantially during a control period. This paper proposes a simulation model that reflects the non-linearity of currents waveforms. The hybrid model, designed in Matlab/Simulink, consists of both continuous- and discrete-time subsystems. Operation of the inverter can be reproduced in either a simplified manner - by reflecting only the fundamental voltage component, or in detail - by modeling the pulse-width-modulated motor voltages. The proposed model is validated with respect to reproducing the non-linearity of currents waveforms by comparison with a laboratory high-speed PMSM drive.

   Power density analysis of machine tool power converters
By NIKOLAI POLIAKOV [View]
[Download]

Abstract: The work is considered to practical aspects of power converter size minimization for machine tool drives. Electric drive systems, such as coordinate axes servodrives of milling machines, cinematographic equipment camera drives, drives for rotating devices of telescopes, provides operation modes requiring speed reverse with current limitation [1], and as usual, during the braking kinetic energy in such systems is dissipated in braking circuit [1]. There are some process analysis and calculation of electromagnetic loads on power stage elements methods [1-7] which allow to obtain proper values of braking circuit resistance and power filter capacitance. From the other side, capacitance minimization techniques [8-10] don't consider recuperation processes in the drive systems even though it may cause some unwanted overvoltages in the DC link of power semiconductor converter [1-5]. Therefore, these methods aren't always optimal from size and mass minimization point of view.

   Torque Ripple Reduction Method for SRM based on Mathematical Model considering Voltage Limitation
By Takahiro KUMAGAI [View]
[Download]

Abstract: This paper proposes a torque ripple reduction method for Switched Reluctance Motor (SRM). Large torque ripple occurs in SRM during switching phase interval. In order to reduce the torque ripple, the ideal current waveform, which reduces completely the torque ripple, is applied as a command value controlling the instantaneous torque. In the proposed method, the ideal current waveform is derived by considering voltage limitation based on mathematical model. The algorithm for determining the torque command is introduced to derive current command which is possible to generate by the power supply. In addition, the maximum torque which is possible to output under condition of the zero torque ripple is clarified. A three-phase 18S/12P type SRM is used in simulation and experiment in order to validate the proposed method. As a result, the torque with no torque ripple is achieved by employing the proposed algorithm in the simulation. Furthermore, the fundamental components of the torque ripple is reduced by 91.5\% on average by applying the proposed method in the experiment.

EPE 2017 - DS1g: Estimation and Identification Methods
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2017 ECCE Europe - Conference > EPE 2017 - Topic 04: Electrical Machines and Drive Systems > EPE 2017 - DS1g: Estimation and Identification Methods
	[return to parent folder]

	A Novel Symmetrical Carrier PWM Based Sensorless Drives for Audible Noise Reduction with Switching Frequencies up to 16kHz By SARI MAEKAWA	[View] [Download]
Abstract: Recently, the demand of the position sensorless control is increasing in motor drive. At low speed range, the saliency-based methods are proposed. In this paper, using the modified symmetrical carrier PWM with switching frequencies up to 16kHz, we achieve to reduce the audible noise that human can be heard.

	Considerations for a high-speed PMSM drive featuring a GaN-ANPC inverter By Heikki JÄRVISALO	[View] [Download]
Abstract: Gallium nitride (GaN) switches have superior switching performance when compared to the traditionalSi technology. Therefore, GaN switches are an appealing option for power converters and electricaldrives. In this paper, considerations for a high-speed electrical drive with inverter switching frequencyof 1 MHz are presented, along with simulation results of the motor control of the drive.

	Dynamic Operation of FOC Induction Machines Under Current and Voltage Constraints By Alexander POPOV	[View] [Download]
Abstract: This paper analyzes the dynamic performance of FOC induction machines operating under current andvoltage constraints. FOC rely on the proper performance of the inner current control loops. Thecapability of the machine to increase its torque can be seriously compromised due to the inverter voltageand current limits, which affect to the current regulator transient response. This can be especially criticalin machines controlled to operate with reduced rotor flux to increase their efficiency.

	Implementation and verification of the PMSM stator interturn short fault detection algorithm By Lukas OTAVA	[View] [Download]
Abstract: This paper discusses the stator winding interturn short fault detection for three phase Permanent Magnet Synchronous Machines (PMSMs). The implementation of the Extended Kalman filter (EKF)-based fault detection algorithm is discussed. The implemented algorithm was verified with the emulated fault during different operating conditions of the drive. Measurements on a real PMSM and the implementation verification are the most important objectives of the article.

	Modeling the impact of rotor movement on non-linearity of motor currents waveforms in high-speed PMSM drives By Leszek JARZEBOWICZ	[View] [Download]
Abstract: Motor current measurement techniques as well as predictive control algorithms for electric drives rely on an assumption of linear motor currents changes resulting from constant inverter output voltages. Recent research has reported that this assumption does not hold in motors with short electrical time constant, and in drives whose rotor position advances substantially during a control period. This paper proposes a simulation model that reflects the non-linearity of currents waveforms. The hybrid model, designed in Matlab/Simulink, consists of both continuous- and discrete-time subsystems. Operation of the inverter can be reproduced in either a simplified manner - by reflecting only the fundamental voltage component, or in detail - by modeling the pulse-width-modulated motor voltages. The proposed model is validated with respect to reproducing the non-linearity of currents waveforms by comparison with a laboratory high-speed PMSM drive.

	Power density analysis of machine tool power converters By NIKOLAI POLIAKOV	[View] [Download]
Abstract: The work is considered to practical aspects of power converter size minimization for machine tool drives. Electric drive systems, such as coordinate axes servodrives of milling machines, cinematographic equipment camera drives, drives for rotating devices of telescopes, provides operation modes requiring speed reverse with current limitation [1], and as usual, during the braking kinetic energy in such systems is dissipated in braking circuit [1]. There are some process analysis and calculation of electromagnetic loads on power stage elements methods [1-7] which allow to obtain proper values of braking circuit resistance and power filter capacitance. From the other side, capacitance minimization techniques [8-10] don't consider recuperation processes in the drive systems even though it may cause some unwanted overvoltages in the DC link of power semiconductor converter [1-5]. Therefore, these methods aren't always optimal from size and mass minimization point of view.

	Torque Ripple Reduction Method for SRM based on Mathematical Model considering Voltage Limitation By Takahiro KUMAGAI	[View] [Download]
Abstract: This paper proposes a torque ripple reduction method for Switched Reluctance Motor (SRM). Large torque ripple occurs in SRM during switching phase interval. In order to reduce the torque ripple, the ideal current waveform, which reduces completely the torque ripple, is applied as a command value controlling the instantaneous torque. In the proposed method, the ideal current waveform is derived by considering voltage limitation based on mathematical model. The algorithm for determining the torque command is introduced to derive current command which is possible to generate by the power supply. In addition, the maximum torque which is possible to output under condition of the zero torque ripple is clarified. A three-phase 18S/12P type SRM is used in simulation and experiment in order to validate the proposed method. As a result, the torque with no torque ripple is achieved by employing the proposed algorithm in the simulation. Furthermore, the fundamental components of the torque ripple is reduced by 91.5\% on average by applying the proposed method in the experiment.