EPE Association: EPE 2013 - DS1e: High Performance Drives: DTC, Advanced Control and Other High Performance Drive Systems Issues

EPE 2013 - DS1e: High Performance Drives: DTC, Advanced Control and Other High Performance Drive Systems Issues
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2013 ECCE Europe - Conference > EPE 2013 - Topic 12: High performance drives > EPE 2013 - DS1e: High Performance Drives: DTC, Advanced Control and Other High Performance Drive Systems Issues

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   A Novel Motor Controller Based on Model Predictive Control
By Zedong ZHENG, Kui WANG, Yongdong LI [View]
[Download]

Abstract: Model predictive control (MPC) is a newly developed control algorithm which can realize the optimal by the state predict and optimal control with lest control errors and smallest control cost. MPC is widely applied in process control systems. In this paper, the MPC algorithm is realized in motor control system instead of the traditional PI regulators. The proposed MPC controller is generic and can be easily modified for the application on other kind of motors. By some algorithm simplification, MPC can be realized and the optimal control variables are obtained easily by ordinary digital processers. Experimental results on induction motor are given to verify the performance.

   An Improved Current Regulation Scheme Used in Indirect Rotor Field Oriented Control for AC Traction Applications
By Ke WANG, Qiongxuan GE, Yaohua LI, Liming SHI [View]
[Download]

Abstract: The influence of cross coupling effect on the performance of the indirect rotor field oriented control(IFOC) for high power AC traction drives cannot be neglected due to the wide operation range, low switching frequency and so on. In this paper, the cross coupling problem between d and q axis current component in the IFOC scheme is discussed. An improved current regulation scheme is proposed based on the analysis and comparisons of the existing decoupling schemes including classical synchronous frame PI controller, feed-forward controller and dynamic decoupling controller. The proposed scheme combines the advantages of feed forward controller and dynamic decoupling controller. Experimental results show that the proposed method can effectively improve the dynamic performance of IFOC for high power AC traction drives.

   Fast Initial Position Estimation for IPMSMs at Standstill Using Comb Filters
By Toshiki SUZUKI, Masaru HASEGAWA, Mutuwo TOMITA [View]
[Download]

Abstract: This paper proposes the fast initial position estimation of IPMSMs (Interior Permanent Magnet Synchronous Motors), based on intentional pulse voltage injection and comb filters. Generally, the rotorposition can be estimated by detecting high-frequency current caused by injected high-frequency voltagebecause its response includes inductance information due to saliency. In general, sinusoidal current, sinusoidal voltage and pulse voltage are utilized for saliency excitation. Methods based on sinusoidal current and voltage, however, require a shorter control period for precise signal injection, making methods based on pulse voltage injection more desirable. Methods based on pulse voltage injection generally utilize the amplitude or differential value of high-frequency current. The algorithms used to calculate the current’s amplitude or differential value, however, are complex and unsuitable for improving the response of position estimation. Especially, algorithms for calculating amplitude values require low-pass filters (LPFs), with the low cut-off frequency utilized for the amplitude calculation. This process degrades the response of the initial position estimation. In order to overcome this problem, this paper proposes a new algorithm using comb filters which can rapidly calculate the amplitude value of high-frequency current and improve the initial position estimation performance.

   Improvement of Torque Control System of PMSM based of Model Predictive Control for overmodulation mode
By Takuya SAKAMOTO, Shinji DOKI [View]
[Download]

Abstract: This paper describes a improvement of torque control performance for PMSM drive system by using model predictive control (MPC), which is possible to drive PMSM even in overmodulation and rectangular-wave mode, because proposed controller based on MPC is able to generate accurate voltage vectors by setting the appropriate prediction period which determine voltage phase resolution . Simulation results show torque control in rectangular-wave mode is feasible.

   Modeling and Torque Ripple Minimization of Transverse Flux Machines
By Jan KLOCK, Thomas ORLIK, Walter SCHUMACHER [View]
[Download]

Abstract: A lumped parameter model describing the electromagnetic behavior of Transverse Flux Machines isproposed. Varying magnetic conductivities along the rotor perimeter representing the effective air gapare used to determine the harmonic effects on current dynamics and torque generation. To reduce torqueripples, a control scheme is presented.

   Novel Torque Angle Control Method for the Induction Motor at the Voltage Margin
By Gerhard CLOS [View]
[Download]

Abstract: The efficiency of a motor drive combined with an inverter increases by exploiting the maximum voltage level that can be provided by the inverter. This paper presents a novel control strategy for the induction motor in the field-weakening range. The inverter’s voltage margin is utilised using only the variation of the argument of the stator voltage vector and avoiding any zero voltage vectors in steady state operation.

   Torque Angle Control of the Permanent Magnet Synchronous Machine at the Voltage Margin
By Gerhard CLOS [View]
[Download]

Abstract: The efficiency of a motor drive combined with an inverter increases by exploiting the maximum voltage level that can be provided by the inverter. This paper presents a novel control strategy for permanent magnet synchronous machines in the field weakening range. The inverter’s voltage margin is utilised completely using only the variation of the torque angle and avoiding any zero voltage vectors in steady state operation.

   Unified Model and Field Oriented Control Algorithm for Three-Phase AC Machines
By Claudio ROSSI, Alessio PILATI, Domenico CASADEI [View]
[Download]

Abstract: The paper introduces a unified model, expressed in state space variables, suitable to be applied to a plurality of conventional AC machines: IM, R-SM, SPM-SM, PMAR-SM, IPM-SM, WR-SM. Even if coefficients in the parameter matrixes differ among machine types, with this model, only one implementation scheme (integration of state space equation) is used for all the machine type. Extension to sensorless control drive is also facilitated by choosing a reference frame oriented with the rotor flux.

   Using Compensated MRAS for Model Predictive Control of Induction Machine
By Zhe CHEN, Fengxiang WANG, Peter STOLZE, Ralph KENNEL [View]
[Download]

Abstract: An encoderless model predictive torque control (PTC) is proposed in this paper. By using the MRAS estimation method to PTC, the system becomes simpler and has the virtue of low cost due to the absence of PWM modulator and speed measurement components. In implementation, a compensated MRAS is considered because of the stator current measurement errors. The experimental results confirm that this control strategy can adapt very wide speed range and it shows good performance both at transient and steady state.

EPE 2013 - DS1e: High Performance Drives: DTC, Advanced Control and Other High Performance Drive Systems Issues
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2013 ECCE Europe - Conference > EPE 2013 - Topic 12: High performance drives > EPE 2013 - DS1e: High Performance Drives: DTC, Advanced Control and Other High Performance Drive Systems Issues
	[return to parent folder]

	A Novel Motor Controller Based on Model Predictive Control By Zedong ZHENG, Kui WANG, Yongdong LI	[View] [Download]
Abstract: Model predictive control (MPC) is a newly developed control algorithm which can realize the optimal by the state predict and optimal control with lest control errors and smallest control cost. MPC is widely applied in process control systems. In this paper, the MPC algorithm is realized in motor control system instead of the traditional PI regulators. The proposed MPC controller is generic and can be easily modified for the application on other kind of motors. By some algorithm simplification, MPC can be realized and the optimal control variables are obtained easily by ordinary digital processers. Experimental results on induction motor are given to verify the performance.

	An Improved Current Regulation Scheme Used in Indirect Rotor Field Oriented Control for AC Traction Applications By Ke WANG, Qiongxuan GE, Yaohua LI, Liming SHI	[View] [Download]
Abstract: The influence of cross coupling effect on the performance of the indirect rotor field oriented control(IFOC) for high power AC traction drives cannot be neglected due to the wide operation range, low switching frequency and so on. In this paper, the cross coupling problem between d and q axis current component in the IFOC scheme is discussed. An improved current regulation scheme is proposed based on the analysis and comparisons of the existing decoupling schemes including classical synchronous frame PI controller, feed-forward controller and dynamic decoupling controller. The proposed scheme combines the advantages of feed forward controller and dynamic decoupling controller. Experimental results show that the proposed method can effectively improve the dynamic performance of IFOC for high power AC traction drives.

	Fast Initial Position Estimation for IPMSMs at Standstill Using Comb Filters By Toshiki SUZUKI, Masaru HASEGAWA, Mutuwo TOMITA	[View] [Download]
Abstract: This paper proposes the fast initial position estimation of IPMSMs (Interior Permanent Magnet Synchronous Motors), based on intentional pulse voltage injection and comb filters. Generally, the rotorposition can be estimated by detecting high-frequency current caused by injected high-frequency voltagebecause its response includes inductance information due to saliency. In general, sinusoidal current, sinusoidal voltage and pulse voltage are utilized for saliency excitation. Methods based on sinusoidal current and voltage, however, require a shorter control period for precise signal injection, making methods based on pulse voltage injection more desirable. Methods based on pulse voltage injection generally utilize the amplitude or differential value of high-frequency current. The algorithms used to calculate the current’s amplitude or differential value, however, are complex and unsuitable for improving the response of position estimation. Especially, algorithms for calculating amplitude values require low-pass filters (LPFs), with the low cut-off frequency utilized for the amplitude calculation. This process degrades the response of the initial position estimation. In order to overcome this problem, this paper proposes a new algorithm using comb filters which can rapidly calculate the amplitude value of high-frequency current and improve the initial position estimation performance.

	Improvement of Torque Control System of PMSM based of Model Predictive Control for overmodulation mode By Takuya SAKAMOTO, Shinji DOKI	[View] [Download]
Abstract: This paper describes a improvement of torque control performance for PMSM drive system by using model predictive control (MPC), which is possible to drive PMSM even in overmodulation and rectangular-wave mode, because proposed controller based on MPC is able to generate accurate voltage vectors by setting the appropriate prediction period which determine voltage phase resolution . Simulation results show torque control in rectangular-wave mode is feasible.

	Modeling and Torque Ripple Minimization of Transverse Flux Machines By Jan KLOCK, Thomas ORLIK, Walter SCHUMACHER	[View] [Download]
Abstract: A lumped parameter model describing the electromagnetic behavior of Transverse Flux Machines isproposed. Varying magnetic conductivities along the rotor perimeter representing the effective air gapare used to determine the harmonic effects on current dynamics and torque generation. To reduce torqueripples, a control scheme is presented.

	Novel Torque Angle Control Method for the Induction Motor at the Voltage Margin By Gerhard CLOS	[View] [Download]
Abstract: The efficiency of a motor drive combined with an inverter increases by exploiting the maximum voltage level that can be provided by the inverter. This paper presents a novel control strategy for the induction motor in the field-weakening range. The inverter’s voltage margin is utilised using only the variation of the argument of the stator voltage vector and avoiding any zero voltage vectors in steady state operation.

	Torque Angle Control of the Permanent Magnet Synchronous Machine at the Voltage Margin By Gerhard CLOS	[View] [Download]
Abstract: The efficiency of a motor drive combined with an inverter increases by exploiting the maximum voltage level that can be provided by the inverter. This paper presents a novel control strategy for permanent magnet synchronous machines in the field weakening range. The inverter’s voltage margin is utilised completely using only the variation of the torque angle and avoiding any zero voltage vectors in steady state operation.

	Unified Model and Field Oriented Control Algorithm for Three-Phase AC Machines By Claudio ROSSI, Alessio PILATI, Domenico CASADEI	[View] [Download]
Abstract: The paper introduces a unified model, expressed in state space variables, suitable to be applied to a plurality of conventional AC machines: IM, R-SM, SPM-SM, PMAR-SM, IPM-SM, WR-SM. Even if coefficients in the parameter matrixes differ among machine types, with this model, only one implementation scheme (integration of state space equation) is used for all the machine type. Extension to sensorless control drive is also facilitated by choosing a reference frame oriented with the rotor flux.

	Using Compensated MRAS for Model Predictive Control of Induction Machine By Zhe CHEN, Fengxiang WANG, Peter STOLZE, Ralph KENNEL	[View] [Download]
Abstract: An encoderless model predictive torque control (PTC) is proposed in this paper. By using the MRAS estimation method to PTC, the system becomes simpler and has the virtue of low cost due to the absence of PWM modulator and speed measurement components. In implementation, a compensated MRAS is considered because of the stator current measurement errors. The experimental results confirm that this control strategy can adapt very wide speed range and it shows good performance both at transient and steady state.