EPE Association: EPE 2015 - DS1e: High Performance Drives

EPE 2015 - DS1e: High Performance Drives
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2015 ECCE Europe - Conference > EPE 2015 - Topic 04: Electrical Machines and Drive Systems > EPE 2015 - DS1e: High Performance Drives

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   A dual two-level inverter with a single source for open end winding induction motor drive application
By Shajjad CHOWDHURY [View]
[Download]

Abstract: This paper describes a dual inverter motor drive topology using a single supply for open winding induction machine. The paper considers the possibilities of using a dual bridge inverter with one bridge inverter floating, this will allow achieving multilevel voltage output. The charging and discharging of the floating capacitor can be controlled using the redundant switching states. The use of this topology can improve the system weight and volume. The paper includes analysis and modulation of the converter topology as well as simulation and experimental results.

   A Novel Anti-Windup and Flux-Weakening Control Method for Current Control of IPMSMs Using Current and Current Phase Operations
By Atsushi MATSUMOTO [View]
[Download]

Abstract: In this paper, a novel anti-windup and flux-weakening control method for current control of interior permanent synchronous motors using the current and the current phase operation has been proposed. This method does not use the motor parameters directly; therefore, it is possible to achieve the robust control system. The proposed method is possible to achieve the fast torque response and to construct the robust control system. We carry out some simulations to verify the effectiveness of the proposed method.

   A Robust Position Sensorless Control Method of IPMSMs to Magnetic Non-linearity within Over-modulation Range
By Yosuke NAKAYAMA [View]
[Download]

Abstract: This paper proposes a novel position sensorless control system utilizing an inverter over-modulation range for IPMSMs with magnetic-nonlinearity by simple algorithms. Both position sensorless control and drive within inverter over-modulation range contribute cost reduction, however these schemes could destabilize closed loop current control system especially in high torque region because of (1) variation of q-axis inductance lq due to magnetic saturation, (2) distortion of feedback currents within over-modulation range.Proposed control system apply the MTPA-oriented flux model and a comb filter to overcome these problems, and have confirmed that it can achieve (1) position sensorless drive, (2) robust maximum torque per ampere control with respect to magnetic-nonlinearity, (3) expanding the operation range.

   Comparison of induction and synchronous reluctance machine based actuators for elevated temperature environments
By Klaus LANG [View]
[Download]

Abstract: This paper presents an induction and a synchronous reluctance machine-based actuator designed for usein an elevated-temperature environment application and compares their dynamic and loss performances.In the design process, semi-analytic models and suitable controller designs are implemented in a geneticalgorithm to develop minimum-loss designs. Simulations and measurements are used to compare theperformances of the final machine designs.

   Comparison of the Efficiency of Different Magnetization Strategies for a Variable Speed Induction Machine Drive
By Giampaolo TORRISI [View]
[Download]

Abstract: This paper introduces a novel experimental procedure to determine the power losses in variable speed induction motors. In the first part, a two-test procedure is designed to determine each contribution to the power losses in an electric drive, in particular the iron losses. These are identified on models from international standards, as a function of the operating conditions, and compared with standard empirical relations such as the Steinmetz equations. In the second part, the resulting models are employed to compare different magnetization strategies for steady-state control purposes. The results show that accounting for advanced models is beneficial in reducing the machine power losses.

   Decoupling of Secondary Saliencies in Sensorless AC Drives Using Repetitive Control
By Zhe CHEN [View]
[Download]

Abstract: To decouple strong secondary saliencies in sensorless AC drives, a repetitive control method in an an-gle domain is proposed. This method regards secondary saliencies as periodic disturbances relative toelectrical angle and generates the same saliencies to compensate them. The proposed method is easy toimplement and proved effective by experiments.

   Design of a Transverse Flux Reluctance Machine with Mutual Flux Paths and Disc Rotors
By Jan DOERING [View]
[Download]

Abstract: This paper presents the design of a transverse flux reluctance machine with mutual flux paths without considerable coupling between neighboring phases. It also discusses further design improvements, which effect power density and/or efficiency. Thereby the practical limits are mentioned.

   Direct Torque Control of Permanent Magnet Synchronous Motor Using Real-time Simulator with FEA Motor Model for Pulsation Torque Reduction
By RYO TANABE [View]
[Download]

Abstract: This paper presents high performance control techniques of permanent magnet synchronous motor byusing a real-time simulator with a finite element analysis based motor model. These techniques enableto consider nonlinear characteristics of PMSM in motor drives because FEA based motor model cantakes into account of spatial harmonics and magnetic saturation. Therefore, these techniques take someadvantages for development control method and drive system. In this paper, high performance torquecontrols for PMSM are proposed as one of the advanced control techniques given by the real timesimulating with the FEA motor model. The proposed torque controls are developed based on directtorque control (DTC) of PMSM and output torque and stator linkage flux estimator using FEA basedmotor model. The proposed method can achieve both fast torque reference and smooth torque withreducing pulsation torque which is generated spatial harmonics neglected in the conventional DTCmethod. The effectiveness of proposed method is verified by performing some simulations andexperiments

   ELECTROTHERMAL DESIGN OF POWER INVERTERS FOR AUTOMOTIVE ELECTRIC DRIVETRAIN SYSTEMS USING MULTIDOMAIN SIMULATION
By Olga ILINA [View]
[Download]

Abstract: Electrothermal design and optimization of motor drive systems for automotive electric drivetrain applications requires simulation methods to handle large differences in timescale and component modelling across multiple physical domains. This paper presents an approach based on model-reduction and co-simulation techniques using commercially available finite element method (FEM) and circuit/system simulation software. The methodology is demonstrated on an industrial prototype.

   High-performance Synchronous Reluctance Motors in Low-voltage Applications
By STEFAN STAUDT [View]
[Download]

Abstract: This paper will present a simplified control algorithm for synchronous reluctance machines (SynRM) inlow-voltage applications. In this specific case, the entire drive train, including the battery, is considered.The difficulty of the non-linearity of the SynRM is estimated using an adapted model, based on the measuredvalues. The model parameters have been determined through a repeatable method and confirmedby laboratory measurements.

   Improvement in Response of Position Estimation for IPMSMs in Low-speed Regions Including Standstill Using Area Calculation
By Toshiki SUZUKI [View]
[Download]

Abstract: This paper proposes a direct rotor-position estimation method for IPMSMs (Interior Permanent Magnet Synchronous Motors) in low-speed regions including standstill. Proposed estimation method does not require phase-locked-loop (PLL) which degrade the response of position estimation and it can improve the response of position estimation.

   Improvement of transient state characteristic for Vector control system by using the Inverter Overmodulation range
By Kosuke KONDO [View]
[Download]

Abstract: This paper addresses the evaluation of control performance in transient state by using the overmodulation of inverter. In overmodulation drive, unavoidable low order harmonics current appears in vector control and makes some troubles.To realize it by using vector control which has wide band, it needs compensation to harmonics current.So far, authors have proposed vector control system with harmonics estimator, and then it has been shown the effectiveness for the operation in overmodulation range.This paper addresses the evaluation of control performance in static state and transient state, focusing on compensation to harmonic current. It shows the effectiveness of proposed method to improve control performance in not only static states but also transient states.In addition, it shows this system realize a seamless operation in both range.

   Multiphase Modular Power Converter using the PEBB concept and FPGA-based Direct High Speed Voltage Measurement
By ALBERTO TENCONI [View]
[Download]

Abstract: The paper presents a multiphase, modular power converter for the development of multiphase drive control. The proposed converter uses the Power Electronic Building Block (PEBB) concept and uses six independent three-phase Intelligent Power Modules (IPMs). Each power unit is equipped with a local FPGA-based board that communicates with a Rapid Prototyping Control Unit (RPCU) by means of optical fibers. Therefore, no analog signals are transmitted throughout the proposed power converter. The paper also proposes a digital FPGA-based method for voltage measurement of the instantaneous PWM voltage at the output of a three-phase module. The PWM voltages are measured by means a high bandwidth, fully differential amplifier and a fast Analog-to-Digital (A/D) converter that provides the samples to the local FPGA. To show the flexibility and advantages of the proposed test rig, experimental results are provided for a six-phase induction motor drive.

   On-line Copper Loss Minimization Control Method of Induction and PM Motors with Periodic Fluctuation Load
By MASAKAZU KATO [View]
[Download]

Abstract: This paper discusses the efficiency of permanent magnet motors (PM motors) and induction motors when periodic fluctuation occurs in the load. PM motors generate magnet torque by permanent magnet in the rotor. The magnet torque of PM motor is independent to d-axis current. However, if d-axis current of PM motor change rapidly in order to achieve high efficiency control, output torque also change rapidly without transient current because the reluctance torque is proportional to d-axis current. Thus, the torque response is quick according to electric time constant of the PM motor. On the other hand, induction motors generate output torque by the secondary flux. There is a relationship of first order lag between the secondary flux and the excitation current in the induction motors. Consequently, the secondary flux cannot be rapidly changed by the load torque. When the load torque varies in faster speed, the high efficiency control method increases the copper loss because the transient current flows in the excitation current. This paper clarifies the minimum copper loss control method for induction motors with torque fluctuation. When the load fluctuation is faster than the secondary flux of the induction motor, the high efficiency control method using the effective value of the load torque is used. The copper loss in the load fluctuation condition is analyzed in order to derive the boundary condition that copper loss is minimized. The validity of the boundary condition is confirmed by the experimental results using 3.7-kW induction motor.

   Optimal Vector Control for Wound Rotor Salient Pole Synchronous Motors over Full Speed Range
By David UZEL [View]
[Download]

Abstract: This contribution introduces an optimal control for wound rotor salient pole synchronous motor intended for a new mining machine drive. The optimum considers demand for maximum torque of the motor. Hence, the main idea is to find optimal values of stator flux current Isd and rotor field excitation current If to achieve maximum available torque of the machine. This contribution describes proposed control. The theoretical conclusions are verified by simulation results and extensive experiments made on developed down-scale prototype of the investigated drive.

   Robust Maximum-Torque-per-Ampere Control Method applying Virtual Inductance to Counteract Parameter Errors for Direct Torque Control of Permanent Magnet Synchro
By Tetsuya MATSUYAMA [View]
[Download]

Abstract: This paper proposes a robust method of controlling a drive so as to counteract parameter errors inPMSMs. The proposed method compensates for these error components on the basis of the phaseinformation of the current vector and the rotor flux vector in the maximum torque control (MTC)frame. Direct torque control (DTC), a PMSM drive system, can realize maximum-torque-per-ampere(MTPA) control by giving an optimal target magnetic flux.

   The Proposal of Low Speed Sensorless Drives by Symmetrical Carrier PWM
By SARI MAEKAWA [View]
[Download]

Abstract: The rotor position sensor is required to control Permanent Magnet Synchronous Motor (PMSM).However, the rotor position sensor, for example, Resolvers or Pulse Generator (PG) have somedisadvantages which are an increase of total volume of the motor, fault of power supply lines andsignal lines of these sensors, and maintenance. To overcome these difficulties, sensorless controlmethods have been developed. From standstill, sensorless drive method for saliency PMSMs has beenalready proposed [1]-[5]. However, audible noise occurs by supply.In this paper, we achieve sensorless drive for PMSM using the PWM generation method which usedthree symmetrical carriers. We verify that proposed method has low audible noise and a high response.

   The study of magnetic polarity detection method for permanent magnet reluctance motor
By Shun TANIGUCHI [View]
[Download]

Abstract: This paper studies a magnetic polarity detection method for permanent magnet reluctance motor (PRM). Inductance characteristic of PRM is different from that of common interior permanent magnet synchronous motor. The inductance characteristic of PRM is verified by electromagnetic field analysis. Moreover, this paper proposes novel magnetic polarity detection method using the inductance characteristic of PRM. The proposed method is verified by experiments using a 90-kW PRM.

   Torque Ripple Minimization in Five-Phase Three-Level Voltage Source Inverter Fed Direct Torque Control Induction Motor Drive
By Mohan AWARE [View]
[Download]

Abstract: This paper presents the torque ripple minimization in direct torque control (DTC) _ve-phase induction motor drive fed with three-level _ve-phase inverter. Selective space vector utilization in three-level _ve-phase inverter is investigated and compared with its two-level counterparts. In order to minimize the torque ripple, _ve-level torque comparator is presented which allows the utilization of full, half and zero voltage vectors. These voltage vectors utilization in three-level DTC not only minimizes the torque ripple but also the x-y stator _ux distortion. Performance is evaluated through simulation and validated through experimental results

EPE 2015 - DS1e: High Performance Drives
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2015 ECCE Europe - Conference > EPE 2015 - Topic 04: Electrical Machines and Drive Systems > EPE 2015 - DS1e: High Performance Drives
	[return to parent folder]

	A dual two-level inverter with a single source for open end winding induction motor drive application By Shajjad CHOWDHURY	[View] [Download]
Abstract: This paper describes a dual inverter motor drive topology using a single supply for open winding induction machine. The paper considers the possibilities of using a dual bridge inverter with one bridge inverter floating, this will allow achieving multilevel voltage output. The charging and discharging of the floating capacitor can be controlled using the redundant switching states. The use of this topology can improve the system weight and volume. The paper includes analysis and modulation of the converter topology as well as simulation and experimental results.

	A Novel Anti-Windup and Flux-Weakening Control Method for Current Control of IPMSMs Using Current and Current Phase Operations By Atsushi MATSUMOTO	[View] [Download]
Abstract: In this paper, a novel anti-windup and flux-weakening control method for current control of interior permanent synchronous motors using the current and the current phase operation has been proposed. This method does not use the motor parameters directly; therefore, it is possible to achieve the robust control system. The proposed method is possible to achieve the fast torque response and to construct the robust control system. We carry out some simulations to verify the effectiveness of the proposed method.

	A Robust Position Sensorless Control Method of IPMSMs to Magnetic Non-linearity within Over-modulation Range By Yosuke NAKAYAMA	[View] [Download]
Abstract: This paper proposes a novel position sensorless control system utilizing an inverter over-modulation range for IPMSMs with magnetic-nonlinearity by simple algorithms. Both position sensorless control and drive within inverter over-modulation range contribute cost reduction, however these schemes could destabilize closed loop current control system especially in high torque region because of (1) variation of q-axis inductance lq due to magnetic saturation, (2) distortion of feedback currents within over-modulation range.Proposed control system apply the MTPA-oriented flux model and a comb filter to overcome these problems, and have confirmed that it can achieve (1) position sensorless drive, (2) robust maximum torque per ampere control with respect to magnetic-nonlinearity, (3) expanding the operation range.

	Comparison of induction and synchronous reluctance machine based actuators for elevated temperature environments By Klaus LANG	[View] [Download]
Abstract: This paper presents an induction and a synchronous reluctance machine-based actuator designed for usein an elevated-temperature environment application and compares their dynamic and loss performances.In the design process, semi-analytic models and suitable controller designs are implemented in a geneticalgorithm to develop minimum-loss designs. Simulations and measurements are used to compare theperformances of the final machine designs.

	Comparison of the Efficiency of Different Magnetization Strategies for a Variable Speed Induction Machine Drive By Giampaolo TORRISI	[View] [Download]
Abstract: This paper introduces a novel experimental procedure to determine the power losses in variable speed induction motors. In the first part, a two-test procedure is designed to determine each contribution to the power losses in an electric drive, in particular the iron losses. These are identified on models from international standards, as a function of the operating conditions, and compared with standard empirical relations such as the Steinmetz equations. In the second part, the resulting models are employed to compare different magnetization strategies for steady-state control purposes. The results show that accounting for advanced models is beneficial in reducing the machine power losses.

	Decoupling of Secondary Saliencies in Sensorless AC Drives Using Repetitive Control By Zhe CHEN	[View] [Download]
Abstract: To decouple strong secondary saliencies in sensorless AC drives, a repetitive control method in an an-gle domain is proposed. This method regards secondary saliencies as periodic disturbances relative toelectrical angle and generates the same saliencies to compensate them. The proposed method is easy toimplement and proved effective by experiments.

	Design of a Transverse Flux Reluctance Machine with Mutual Flux Paths and Disc Rotors By Jan DOERING	[View] [Download]
Abstract: This paper presents the design of a transverse flux reluctance machine with mutual flux paths without considerable coupling between neighboring phases. It also discusses further design improvements, which effect power density and/or efficiency. Thereby the practical limits are mentioned.

	Direct Torque Control of Permanent Magnet Synchronous Motor Using Real-time Simulator with FEA Motor Model for Pulsation Torque Reduction By RYO TANABE	[View] [Download]
Abstract: This paper presents high performance control techniques of permanent magnet synchronous motor byusing a real-time simulator with a finite element analysis based motor model. These techniques enableto consider nonlinear characteristics of PMSM in motor drives because FEA based motor model cantakes into account of spatial harmonics and magnetic saturation. Therefore, these techniques take someadvantages for development control method and drive system. In this paper, high performance torquecontrols for PMSM are proposed as one of the advanced control techniques given by the real timesimulating with the FEA motor model. The proposed torque controls are developed based on directtorque control (DTC) of PMSM and output torque and stator linkage flux estimator using FEA basedmotor model. The proposed method can achieve both fast torque reference and smooth torque withreducing pulsation torque which is generated spatial harmonics neglected in the conventional DTCmethod. The effectiveness of proposed method is verified by performing some simulations andexperiments

	ELECTROTHERMAL DESIGN OF POWER INVERTERS FOR AUTOMOTIVE ELECTRIC DRIVETRAIN SYSTEMS USING MULTIDOMAIN SIMULATION By Olga ILINA	[View] [Download]
Abstract: Electrothermal design and optimization of motor drive systems for automotive electric drivetrain applications requires simulation methods to handle large differences in timescale and component modelling across multiple physical domains. This paper presents an approach based on model-reduction and co-simulation techniques using commercially available finite element method (FEM) and circuit/system simulation software. The methodology is demonstrated on an industrial prototype.

	High-performance Synchronous Reluctance Motors in Low-voltage Applications By STEFAN STAUDT	[View] [Download]
Abstract: This paper will present a simplified control algorithm for synchronous reluctance machines (SynRM) inlow-voltage applications. In this specific case, the entire drive train, including the battery, is considered.The difficulty of the non-linearity of the SynRM is estimated using an adapted model, based on the measuredvalues. The model parameters have been determined through a repeatable method and confirmedby laboratory measurements.

	Improvement in Response of Position Estimation for IPMSMs in Low-speed Regions Including Standstill Using Area Calculation By Toshiki SUZUKI	[View] [Download]
Abstract: This paper proposes a direct rotor-position estimation method for IPMSMs (Interior Permanent Magnet Synchronous Motors) in low-speed regions including standstill. Proposed estimation method does not require phase-locked-loop (PLL) which degrade the response of position estimation and it can improve the response of position estimation.

	Improvement of transient state characteristic for Vector control system by using the Inverter Overmodulation range By Kosuke KONDO	[View] [Download]
Abstract: This paper addresses the evaluation of control performance in transient state by using the overmodulation of inverter. In overmodulation drive, unavoidable low order harmonics current appears in vector control and makes some troubles.To realize it by using vector control which has wide band, it needs compensation to harmonics current.So far, authors have proposed vector control system with harmonics estimator, and then it has been shown the effectiveness for the operation in overmodulation range.This paper addresses the evaluation of control performance in static state and transient state, focusing on compensation to harmonic current. It shows the effectiveness of proposed method to improve control performance in not only static states but also transient states.In addition, it shows this system realize a seamless operation in both range.

	Multiphase Modular Power Converter using the PEBB concept and FPGA-based Direct High Speed Voltage Measurement By ALBERTO TENCONI	[View] [Download]
Abstract: The paper presents a multiphase, modular power converter for the development of multiphase drive control. The proposed converter uses the Power Electronic Building Block (PEBB) concept and uses six independent three-phase Intelligent Power Modules (IPMs). Each power unit is equipped with a local FPGA-based board that communicates with a Rapid Prototyping Control Unit (RPCU) by means of optical fibers. Therefore, no analog signals are transmitted throughout the proposed power converter. The paper also proposes a digital FPGA-based method for voltage measurement of the instantaneous PWM voltage at the output of a three-phase module. The PWM voltages are measured by means a high bandwidth, fully differential amplifier and a fast Analog-to-Digital (A/D) converter that provides the samples to the local FPGA. To show the flexibility and advantages of the proposed test rig, experimental results are provided for a six-phase induction motor drive.

	On-line Copper Loss Minimization Control Method of Induction and PM Motors with Periodic Fluctuation Load By MASAKAZU KATO	[View] [Download]
Abstract: This paper discusses the efficiency of permanent magnet motors (PM motors) and induction motors when periodic fluctuation occurs in the load. PM motors generate magnet torque by permanent magnet in the rotor. The magnet torque of PM motor is independent to d-axis current. However, if d-axis current of PM motor change rapidly in order to achieve high efficiency control, output torque also change rapidly without transient current because the reluctance torque is proportional to d-axis current. Thus, the torque response is quick according to electric time constant of the PM motor. On the other hand, induction motors generate output torque by the secondary flux. There is a relationship of first order lag between the secondary flux and the excitation current in the induction motors. Consequently, the secondary flux cannot be rapidly changed by the load torque. When the load torque varies in faster speed, the high efficiency control method increases the copper loss because the transient current flows in the excitation current. This paper clarifies the minimum copper loss control method for induction motors with torque fluctuation. When the load fluctuation is faster than the secondary flux of the induction motor, the high efficiency control method using the effective value of the load torque is used. The copper loss in the load fluctuation condition is analyzed in order to derive the boundary condition that copper loss is minimized. The validity of the boundary condition is confirmed by the experimental results using 3.7-kW induction motor.

	Optimal Vector Control for Wound Rotor Salient Pole Synchronous Motors over Full Speed Range By David UZEL	[View] [Download]
Abstract: This contribution introduces an optimal control for wound rotor salient pole synchronous motor intended for a new mining machine drive. The optimum considers demand for maximum torque of the motor. Hence, the main idea is to find optimal values of stator flux current Isd and rotor field excitation current If to achieve maximum available torque of the machine. This contribution describes proposed control. The theoretical conclusions are verified by simulation results and extensive experiments made on developed down-scale prototype of the investigated drive.

	Robust Maximum-Torque-per-Ampere Control Method applying Virtual Inductance to Counteract Parameter Errors for Direct Torque Control of Permanent Magnet Synchro By Tetsuya MATSUYAMA	[View] [Download]
Abstract: This paper proposes a robust method of controlling a drive so as to counteract parameter errors inPMSMs. The proposed method compensates for these error components on the basis of the phaseinformation of the current vector and the rotor flux vector in the maximum torque control (MTC)frame. Direct torque control (DTC), a PMSM drive system, can realize maximum-torque-per-ampere(MTPA) control by giving an optimal target magnetic flux.

	The Proposal of Low Speed Sensorless Drives by Symmetrical Carrier PWM By SARI MAEKAWA	[View] [Download]
Abstract: The rotor position sensor is required to control Permanent Magnet Synchronous Motor (PMSM).However, the rotor position sensor, for example, Resolvers or Pulse Generator (PG) have somedisadvantages which are an increase of total volume of the motor, fault of power supply lines andsignal lines of these sensors, and maintenance. To overcome these difficulties, sensorless controlmethods have been developed. From standstill, sensorless drive method for saliency PMSMs has beenalready proposed [1]-[5]. However, audible noise occurs by supply.In this paper, we achieve sensorless drive for PMSM using the PWM generation method which usedthree symmetrical carriers. We verify that proposed method has low audible noise and a high response.

	The study of magnetic polarity detection method for permanent magnet reluctance motor By Shun TANIGUCHI	[View] [Download]
Abstract: This paper studies a magnetic polarity detection method for permanent magnet reluctance motor (PRM). Inductance characteristic of PRM is different from that of common interior permanent magnet synchronous motor. The inductance characteristic of PRM is verified by electromagnetic field analysis. Moreover, this paper proposes novel magnetic polarity detection method using the inductance characteristic of PRM. The proposed method is verified by experiments using a 90-kW PRM.

	Torque Ripple Minimization in Five-Phase Three-Level Voltage Source Inverter Fed Direct Torque Control Induction Motor Drive By Mohan AWARE	[View] [Download]
Abstract: This paper presents the torque ripple minimization in direct torque control (DTC) _ve-phase induction motor drive fed with three-level _ve-phase inverter. Selective space vector utilization in three-level _ve-phase inverter is investigated and compared with its two-level counterparts. In order to minimize the torque ripple, _ve-level torque comparator is presented which allows the utilization of full, half and zero voltage vectors. These voltage vectors utilization in three-level DTC not only minimizes the torque ripple but also the x-y stator _ux distortion. Performance is evaluated through simulation and validated through experimental results