EPE Association: EPE 2011 - DS1k: Topic 12: High Performance Drive Systems Issues

EPE 2011 - DS1k: Topic 12: High Performance Drive Systems Issues
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2011 ECCE Europe - Conference > EPE 2011 - Topic 12: High performance drives > EPE 2011 - DS1k: Topic 12: High Performance Drive Systems Issues

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   A High Speed Synchronous Drive with Very Sensitive Back-emf Based Indirect Sensors
By Christian ROD, Alfred RUFER [View]
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Abstract: This paper presents preliminary results in the frame of the development of a very high speed synchronous drive with a rated power of 6 kW at the rated speed of 180 krpm taking place in the context of a university- industry partnership. Due to the very high speed, direct sensors, for speed and position, must be avoided. This paper presents the use of very sensitive back-emf based position and speed indirect sensors for the speed control of the considered synchronous drive. The validation of the used control scheme by experimental results is presented at the end of the paper.

   Direct Thrust Control of Linear Induction Motor in Full Operation Range for Traction Application
By Ke WANG, Liming SHI, Yaohua LI, Qiongxuan GE [View]
[Download]

Abstract: In this paper, mathematic model of linear induction motor (LIM) is developed considering the influ-ences of end effects. A full speed range direct thrust control (DTC) scheme for LIM is proposed con-sidering the parameters dynamic variation and characteristic of railway traction application. In low speed range, an improved indirect stator-quantities control (ISC) with circular flux track is applied to replace the hysteresis controller and switching table in traditional DTC, which can improve the low speed performance effectively as well as maintain the robustness. In medium and high speed range, direct thrust control with hexagonal flux track is utilized to reduce the switching frequency and power loss of the inverter. Experiment results show that the transitions between different schemes are smooth. Moreover, the system has great dynamic and steady state performance. The proposed method has good application prospect in the traction control of LIM driven systems.

   Direct Torque Control Scheme of IM Drive using 12-sided Polygonal Voltage Space Vector
By Gopakumar K, Marian KAZMIERKOWSKI, Chintan PATEL, Rajeevan P.P, Anubrata DEY [View]
[Download]

Abstract: The application like electric vehicles requires frequent torque control to control speed of IM Drives. The direct torque control is very good control scheme for fast torque control and it is easy to implement and decoupling of motor variables along rotor flux axis is not required. In this paper, direct torque control scheme is proposed using 12-sided polygonal space vector based inverter fed IM drive. The proposed DTC scheme uses the fundamental stator voltage vector for identification of sector for selection switching of vector to control stator flux and the torque. Because the DTC scheme requires the information of sector of stator voltage vector position only. The exact position of stator voltage is not required for control like rotor oriented vector control scheme of IM drives. Extensive simulation and experimental results are shown to verify the proposed concept. The control scheme is extended from 1 Hz to rated 50 Hz operation of the inverter. The advantages achieved due to 12-sided polygonal space vector are mainly fast transient of torque, less switching frequency variation, reduced torque error and high resolution of sector identification with accuracy of ±15o.

   Hybrid sensorless control of Axial Flux Permanent Magnet motor drives, including zero speed
By Paolo GIANGRANDE, Davide RONCHETTO, Gianmario PELLEGRINO, Francesco CUPERTINO, Christopher GERADA, Mark SUMNER [View]
[Download]

Abstract: Sensorless control of an axial flux permanent magnet motor drive is proposed and tested. The motor is not purposely designed for sensorless control and shows a very small inherent saliency. This significantly affects the saliency-based position estimation in the low speed region. Other non-idealities, such as the non-sinusoidal back-EMF waveforms and possible misalignment between stator and rotor make the control more challenging. A robust sensorless control scheme is proposed, able to deal with these non-idealities with a rather simple implementation. The position estimation is based on a closed loop hybrid observer of the permanent magnet flux linkage. Experimental results report torque and speed sensorless control.

   Improvements of Speed Adaptation Response for IPMSM Position Sensorless Vector Control With Parallel Feedforward Compensator
By Hajime TANAKA, Masaru HASEGAWA [View]
[Download]

Abstract: This paper proposes improvements of speed adaptation response for Interior Permanent Magnet Synchronous Motors (IPMSMs) position sensorless vector control using a parallel feedforward compensator. Position sensorless control based on an adaptive observer is known to cause delay in the speed adaptation response since gain characteristics on the speed adaptation are reduced in high frequency range, and some studies on improvement of speed estimation response have been done so far. These approaches, however, tend to cause problems of increasing computational complexity. This paper demonstrates the effectiveness of the adaptive observer with the assistance of the proposed parallel feedforward compensator for improvements of speed adaptation response. This parallel feedforward compensator is the only component as an additional controller, and is constructed by an band-pass filter. Hence, the proposed method would be highly practical since the additional component requires less computational effort. In addition, this paper also proposes the bode-diagram based design strategy for some parameters in the proposed parallel feedforward compensator. Finally, the some experimental results show the feasibility and effectiveness of the proposed method.

   Modeling of the air film pressure for a haptic touch actuator
By Christophe WINTER, Yves PERRIARD [View]
[Download]

Abstract: In the scope of haptic touch feedback actuators, we discuss the phenomenon of creating the haptic ex- perience by squeezing the air film between the user finger and the actuator. The focus is given in the modeling of the squeeze film effect. An existing analytical model is compared with FEM simulations and early experimental measurements are presented.

   Neural Network Aided Unscented Kalman Filter for Sensorless Control of PMSM
By Jakub TALLA, Zdenek PEROUTKA [View]
[Download]

Abstract: This paper introduces neural network aided unscented Kalman filter (NNUKF) for sensorless control of ac motor drives. Unscented Kalman filter (UKF) is completed by on-line trained neural network which compensates unmodeled dynamics and uncertainties of a drive model. This technique significantly improves behaviour of estimator in critical operating states, especially in low speeds.

   Optimal direct torque control for PMSM based on model predictive control
By Michihisa HAGINO, Tadanao ZANMA, Muneaki ISHIDA [View]
[Download]

Abstract: In this paper, we propose a novel direct torque control (DTC) system for permanent magnet synchronousmotors (PMSM) based on model predictive control (MPC). The proposed method achieves a comparabletorque ripple with lower inverter switching frequency than a conventional DTC.

   Sensorless Control of Permanent Magnet Synchronous Motor Employing Extended Kalman Filter in Combination with HF Injection Method
By David VOSMIK, Zdenek PEROUTKA [View]
[Download]

Abstract: This paper presents sensorless control of PMSM in full speed range employing combination of two estimators: (i) hf injection, and (ii) extended Kalman filter (EKF). Pulsating hf injection algorithm ensures position and speed estimation in low speed region including standstill. EKF provides precise estimation of rotor speed and position in higher speeds. Algorithms are switched between each other with hysteresis algorithm which guarantee reliable transitions between two algorithms without oscillations and disturbances. Behavior of proposed sensorless control is analyzed by extensive sets of experiments on servo drive of rated power of 10.7kW.

   Sensorless torque control of PM motor using modified HF injection method for audible noise reduction
By Hui JIANG, Mark SUMNER [View]
[Download]

Abstract: A random high frequency (HF) injection sensorless vector control is proposed for a low voltage highcurrent permanent magnet (PM) motor. By spreading the frequency of the injected components in arandom manor, audible frequencies due to the injection can also be spread over a wide range offrequencies, reducing the perception of the audible noise whilst achieving comparable positionestimation to a fixed frequency injection method. Measurements of sound level using a commercialsound meter have been compared for both fixed and random HF injection methods to demonstrate thechange in audible noise.

   Voltage Vector Selection Strategy for the Interior PMSM DTC system
By Dieter GERLING, Yaohua LI [View]
[Download]

Abstract: The direct torque control (DTC) for interior permanent magnet synchronousmotor (PMSM) suffers from high current and torque ripple and variable switching frequency.It is due to the use of switching table to control stator flux and torque. In this paper the controlof stator flux, torque angle and torque in the interior PMSM DTC system is investigated. Avoltage vector selection strategy is proposed which uses stator flux position and torque angleinformation to determine the applying voltage vector and uses SVM to generate the applyingvoltage vector. Experimental results for a 15-kW interior PMSM show voltage vectorselection strategy can decrease stator current and torque ripple and fix switching frequencyagainst switching table.

EPE 2011 - DS1k: Topic 12: High Performance Drive Systems Issues
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2011 ECCE Europe - Conference > EPE 2011 - Topic 12: High performance drives > EPE 2011 - DS1k: Topic 12: High Performance Drive Systems Issues
	[return to parent folder]

	A High Speed Synchronous Drive with Very Sensitive Back-emf Based Indirect Sensors By Christian ROD, Alfred RUFER	[View] [Download]
Abstract: This paper presents preliminary results in the frame of the development of a very high speed synchronous drive with a rated power of 6 kW at the rated speed of 180 krpm taking place in the context of a university- industry partnership. Due to the very high speed, direct sensors, for speed and position, must be avoided. This paper presents the use of very sensitive back-emf based position and speed indirect sensors for the speed control of the considered synchronous drive. The validation of the used control scheme by experimental results is presented at the end of the paper.

	Direct Thrust Control of Linear Induction Motor in Full Operation Range for Traction Application By Ke WANG, Liming SHI, Yaohua LI, Qiongxuan GE	[View] [Download]
Abstract: In this paper, mathematic model of linear induction motor (LIM) is developed considering the influ-ences of end effects. A full speed range direct thrust control (DTC) scheme for LIM is proposed con-sidering the parameters dynamic variation and characteristic of railway traction application. In low speed range, an improved indirect stator-quantities control (ISC) with circular flux track is applied to replace the hysteresis controller and switching table in traditional DTC, which can improve the low speed performance effectively as well as maintain the robustness. In medium and high speed range, direct thrust control with hexagonal flux track is utilized to reduce the switching frequency and power loss of the inverter. Experiment results show that the transitions between different schemes are smooth. Moreover, the system has great dynamic and steady state performance. The proposed method has good application prospect in the traction control of LIM driven systems.

	Direct Torque Control Scheme of IM Drive using 12-sided Polygonal Voltage Space Vector By Gopakumar K, Marian KAZMIERKOWSKI, Chintan PATEL, Rajeevan P.P, Anubrata DEY	[View] [Download]
Abstract: The application like electric vehicles requires frequent torque control to control speed of IM Drives. The direct torque control is very good control scheme for fast torque control and it is easy to implement and decoupling of motor variables along rotor flux axis is not required. In this paper, direct torque control scheme is proposed using 12-sided polygonal space vector based inverter fed IM drive. The proposed DTC scheme uses the fundamental stator voltage vector for identification of sector for selection switching of vector to control stator flux and the torque. Because the DTC scheme requires the information of sector of stator voltage vector position only. The exact position of stator voltage is not required for control like rotor oriented vector control scheme of IM drives. Extensive simulation and experimental results are shown to verify the proposed concept. The control scheme is extended from 1 Hz to rated 50 Hz operation of the inverter. The advantages achieved due to 12-sided polygonal space vector are mainly fast transient of torque, less switching frequency variation, reduced torque error and high resolution of sector identification with accuracy of ±15o.

	Hybrid sensorless control of Axial Flux Permanent Magnet motor drives, including zero speed By Paolo GIANGRANDE, Davide RONCHETTO, Gianmario PELLEGRINO, Francesco CUPERTINO, Christopher GERADA, Mark SUMNER	[View] [Download]
Abstract: Sensorless control of an axial flux permanent magnet motor drive is proposed and tested. The motor is not purposely designed for sensorless control and shows a very small inherent saliency. This significantly affects the saliency-based position estimation in the low speed region. Other non-idealities, such as the non-sinusoidal back-EMF waveforms and possible misalignment between stator and rotor make the control more challenging. A robust sensorless control scheme is proposed, able to deal with these non-idealities with a rather simple implementation. The position estimation is based on a closed loop hybrid observer of the permanent magnet flux linkage. Experimental results report torque and speed sensorless control.

	Improvements of Speed Adaptation Response for IPMSM Position Sensorless Vector Control With Parallel Feedforward Compensator By Hajime TANAKA, Masaru HASEGAWA	[View] [Download]
Abstract: This paper proposes improvements of speed adaptation response for Interior Permanent Magnet Synchronous Motors (IPMSMs) position sensorless vector control using a parallel feedforward compensator. Position sensorless control based on an adaptive observer is known to cause delay in the speed adaptation response since gain characteristics on the speed adaptation are reduced in high frequency range, and some studies on improvement of speed estimation response have been done so far. These approaches, however, tend to cause problems of increasing computational complexity. This paper demonstrates the effectiveness of the adaptive observer with the assistance of the proposed parallel feedforward compensator for improvements of speed adaptation response. This parallel feedforward compensator is the only component as an additional controller, and is constructed by an band-pass filter. Hence, the proposed method would be highly practical since the additional component requires less computational effort. In addition, this paper also proposes the bode-diagram based design strategy for some parameters in the proposed parallel feedforward compensator. Finally, the some experimental results show the feasibility and effectiveness of the proposed method.

	Modeling of the air film pressure for a haptic touch actuator By Christophe WINTER, Yves PERRIARD	[View] [Download]
Abstract: In the scope of haptic touch feedback actuators, we discuss the phenomenon of creating the haptic ex- perience by squeezing the air film between the user finger and the actuator. The focus is given in the modeling of the squeeze film effect. An existing analytical model is compared with FEM simulations and early experimental measurements are presented.

	Neural Network Aided Unscented Kalman Filter for Sensorless Control of PMSM By Jakub TALLA, Zdenek PEROUTKA	[View] [Download]
Abstract: This paper introduces neural network aided unscented Kalman filter (NNUKF) for sensorless control of ac motor drives. Unscented Kalman filter (UKF) is completed by on-line trained neural network which compensates unmodeled dynamics and uncertainties of a drive model. This technique significantly improves behaviour of estimator in critical operating states, especially in low speeds.

	Optimal direct torque control for PMSM based on model predictive control By Michihisa HAGINO, Tadanao ZANMA, Muneaki ISHIDA	[View] [Download]
Abstract: In this paper, we propose a novel direct torque control (DTC) system for permanent magnet synchronousmotors (PMSM) based on model predictive control (MPC). The proposed method achieves a comparabletorque ripple with lower inverter switching frequency than a conventional DTC.

	Sensorless Control of Permanent Magnet Synchronous Motor Employing Extended Kalman Filter in Combination with HF Injection Method By David VOSMIK, Zdenek PEROUTKA	[View] [Download]
Abstract: This paper presents sensorless control of PMSM in full speed range employing combination of two estimators: (i) hf injection, and (ii) extended Kalman filter (EKF). Pulsating hf injection algorithm ensures position and speed estimation in low speed region including standstill. EKF provides precise estimation of rotor speed and position in higher speeds. Algorithms are switched between each other with hysteresis algorithm which guarantee reliable transitions between two algorithms without oscillations and disturbances. Behavior of proposed sensorless control is analyzed by extensive sets of experiments on servo drive of rated power of 10.7kW.

	Sensorless torque control of PM motor using modified HF injection method for audible noise reduction By Hui JIANG, Mark SUMNER	[View] [Download]
Abstract: A random high frequency (HF) injection sensorless vector control is proposed for a low voltage highcurrent permanent magnet (PM) motor. By spreading the frequency of the injected components in arandom manor, audible frequencies due to the injection can also be spread over a wide range offrequencies, reducing the perception of the audible noise whilst achieving comparable positionestimation to a fixed frequency injection method. Measurements of sound level using a commercialsound meter have been compared for both fixed and random HF injection methods to demonstrate thechange in audible noise.

	Voltage Vector Selection Strategy for the Interior PMSM DTC system By Dieter GERLING, Yaohua LI	[View] [Download]
Abstract: The direct torque control (DTC) for interior permanent magnet synchronousmotor (PMSM) suffers from high current and torque ripple and variable switching frequency.It is due to the use of switching table to control stator flux and torque. In this paper the controlof stator flux, torque angle and torque in the interior PMSM DTC system is investigated. Avoltage vector selection strategy is proposed which uses stator flux position and torque angleinformation to determine the applying voltage vector and uses SVM to generate the applyingvoltage vector. Experimental results for a 15-kW interior PMSM show voltage vectorselection strategy can decrease stator current and torque ripple and fix switching frequencyagainst switching table.