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http://hdl.handle.net/10985/10781
Sensitivity of a 5-phase Brushless DC machine to the 7th harmonic of the back-electromotive force
SEMAIL, Eric; KESTELYN, Xavier; BOUSCAYROL, Alain
This paper presents a vector control of a 5-phase drive composed of a 5-leg Pulse Width Modulation (PWM) Voltage Source Inverter (VSI) supplying a permanent-magnet Brushless DC (BLDC) machine with trapezoidal waveform of the back-electromotive force (EMF). To achieve this control a Multi-machine Multi-converter model is used: the 5-phase machine is transformed into a set of two 2-phase fictitious machines which are each one controlled in a (d,q) frame as 3-phase machines with sine waveform back-EMF. In comparison with the 3-phase BLDC drives, the 5-phase ones present one particularity: a high sensitivity to the 7th harmonic of back-EMF. Experimental results show that the 7th harmonic of back-EMF, which represents only 5% of RMS back-EMF, induces high amplitude parasitic currents (29 % percent of RMS current). The model allows to explain the origin of this sensitivity and how to modify simply the control algorithm. Experimental improvements of the drive are presented.
Thu, 01 Jan 2004 00:00:00 GMThttp://hdl.handle.net/10985/107812004-01-01T00:00:00ZSEMAIL, EricKESTELYN, XavierBOUSCAYROL, AlainThis paper presents a vector control of a 5-phase drive composed of a 5-leg Pulse Width Modulation (PWM) Voltage Source Inverter (VSI) supplying a permanent-magnet Brushless DC (BLDC) machine with trapezoidal waveform of the back-electromotive force (EMF). To achieve this control a Multi-machine Multi-converter model is used: the 5-phase machine is transformed into a set of two 2-phase fictitious machines which are each one controlled in a (d,q) frame as 3-phase machines with sine waveform back-EMF. In comparison with the 3-phase BLDC drives, the 5-phase ones present one particularity: a high sensitivity to the 7th harmonic of back-EMF. Experimental results show that the 7th harmonic of back-EMF, which represents only 5% of RMS back-EMF, induces high amplitude parasitic currents (29 % percent of RMS current). The model allows to explain the origin of this sensitivity and how to modify simply the control algorithm. Experimental improvements of the drive are presented.Représentations Systèmes Multi-Machines (SMM) de machines polyphasées
http://hdl.handle.net/10985/9260
Représentations Systèmes Multi-Machines (SMM) de machines polyphasées
SEMAIL, Eric; MEIBODY-TABAR, Farid; BENKORIS, Mohamed; RAZIK, Hubert; PIETRZAK-DAVID, Maria; MONMASSON, Eric; BOUSCAYROL, Alain; DAVAT, Bernard; DELARUE, Philippe; HAUTIER, Jean-Paul; LOUIS, Jean-Paul; PIERFEDERICI, Serge
Cet article présente le principe de décomposition de machines polyphasées en machines fictives monophasée et diphasées non couplées magnétiquement. Après la description de la méthodologie de décomposition SMM (Systèmes Multimachines Multiconvertisseurs), deux cas sont étudiés. Une machine synchrone pentaphasée, est d'abord analysée avec son modèle de machines équivalentes. Un second cas plus original est ensuite étudié : deux machines pentaphasées connectées en série et alimentées par un onduleur 5 bras.; This paper presents the equivalence of multi-phase machines with a set a of 1-phase and 2-phase machines with no magnetic couplings. Two cases are then studied. First, a 5-phase machine supplied by a Voltage Source Inverter(VSI) is analyzed. Then, a model is established for a single 5-leg VSI supplying two 5-phase machines whose windings are connected in series.
Sat, 01 Jan 2005 00:00:00 GMThttp://hdl.handle.net/10985/92602005-01-01T00:00:00ZSEMAIL, EricMEIBODY-TABAR, FaridBENKORIS, MohamedRAZIK, HubertPIETRZAK-DAVID, MariaMONMASSON, EricBOUSCAYROL, AlainDAVAT, BernardDELARUE, PhilippeHAUTIER, Jean-PaulLOUIS, Jean-PaulPIERFEDERICI, SergeCet article présente le principe de décomposition de machines polyphasées en machines fictives monophasée et diphasées non couplées magnétiquement. Après la description de la méthodologie de décomposition SMM (Systèmes Multimachines Multiconvertisseurs), deux cas sont étudiés. Une machine synchrone pentaphasée, est d'abord analysée avec son modèle de machines équivalentes. Un second cas plus original est ensuite étudié : deux machines pentaphasées connectées en série et alimentées par un onduleur 5 bras.
This paper presents the equivalence of multi-phase machines with a set a of 1-phase and 2-phase machines with no magnetic couplings. Two cases are then studied. First, a 5-phase machine supplied by a Voltage Source Inverter(VSI) is analyzed. Then, a model is established for a single 5-leg VSI supplying two 5-phase machines whose windings are connected in series.Modeling and Control of a 7-phase Claw-pole Starter-alternator for a Micro-hybrid Automotive Application
http://hdl.handle.net/10985/9263
Modeling and Control of a 7-phase Claw-pole Starter-alternator for a Micro-hybrid Automotive Application
BRUYERE, Antoine; SEMAIL, Eric; BOUSCAYROL, Alain; CHARLEY, Jacques; LOCMENT, Fabrice; DUBUS, Jean-Marc; MIPO, Jean-Claude
This paper deals with the modeling and the control of a new high power 12V Integrated Starter Alternator (ISA). This system is used to bring micro-hybrid functions to standard Internal Combustion Engine (ICE) vehicles. The drive is composed of a seven-phase synchronous claw-pole machine with separate excitation, supplied with a seven-leg Voltage Source Inverter (VSI) designed for low voltage and high current. The system is modeled in a generalized Concordia frame and a graphical description is used to highlight energetic properties of such a complex system. A control scheme is then deduced from this graphical description. Two controls are achieved in generator mode and compared: one is using the VSI in a square-wave mode, the other in a Pulse Width Modulation (PWM) mode. Experimental results are provided.
Tue, 01 Jan 2008 00:00:00 GMThttp://hdl.handle.net/10985/92632008-01-01T00:00:00ZBRUYERE, AntoineSEMAIL, EricBOUSCAYROL, AlainCHARLEY, JacquesLOCMENT, FabriceDUBUS, Jean-MarcMIPO, Jean-ClaudeThis paper deals with the modeling and the control of a new high power 12V Integrated Starter Alternator (ISA). This system is used to bring micro-hybrid functions to standard Internal Combustion Engine (ICE) vehicles. The drive is composed of a seven-phase synchronous claw-pole machine with separate excitation, supplied with a seven-leg Voltage Source Inverter (VSI) designed for low voltage and high current. The system is modeled in a generalized Concordia frame and a graphical description is used to highlight energetic properties of such a complex system. A control scheme is then deduced from this graphical description. Two controls are achieved in generator mode and compared: one is using the VSI in a square-wave mode, the other in a Pulse Width Modulation (PWM) mode. Experimental results are provided.Inversion-based control of electromechanical systems using causal graphical descriptions
http://hdl.handle.net/10985/9276
Inversion-based control of electromechanical systems using causal graphical descriptions
BARRE, Pierre-Jean; BOUSCAYROL, Alain; DELARUE, Philippe; DUMETZ, Eric; GIRAUD, Frédéric; HAUTIER, Jean-Paul; KESTELYN, Xavier; LEMAIRE-SEMAIL, Betty; SEMAIL, Eric
Causal Ordering Graph and Energetic Macroscopic Representation are graphical descriptions to model electromechanical systems using integral causality. Inversion rules have been defined in order to deduce control structure step-bystep from these graphical descriptions. These two modeling tools can be used together to develop a two-layer control of system with complex parts. A double-drive paper system is taken as an example. The deduced control yields good performances of tension regulation and velocity tracking.
Sun, 01 Jan 2006 00:00:00 GMThttp://hdl.handle.net/10985/92762006-01-01T00:00:00ZBARRE, Pierre-JeanBOUSCAYROL, AlainDELARUE, PhilippeDUMETZ, EricGIRAUD, FrédéricHAUTIER, Jean-PaulKESTELYN, XavierLEMAIRE-SEMAIL, BettySEMAIL, EricCausal Ordering Graph and Energetic Macroscopic Representation are graphical descriptions to model electromechanical systems using integral causality. Inversion rules have been defined in order to deduce control structure step-bystep from these graphical descriptions. These two modeling tools can be used together to develop a two-layer control of system with complex parts. A double-drive paper system is taken as an example. The deduced control yields good performances of tension regulation and velocity tracking.Right Harmonic Spectrum for the back-electromotive force of a n-phase synchronous motor
http://hdl.handle.net/10985/9274
Right Harmonic Spectrum for the back-electromotive force of a n-phase synchronous motor
SEMAIL, Eric; KESTELYN, Xavier; BOUSCAYROL, Alain
This paper deals with a vector control of n-phase permanent magnet synchronous machine. To use control algorithms already developed for sine-wave 3-phase machines, the spectrum of back electromotive force (EMF) must contain only odd 2k+1 harmonics which verify the following inequality, 1≤ 2k +1< n . In an experimental vector control of a 5-phase drive, two usual algorithms of sine-wave 3-phase machine are thus used to supply a machine with trapezoidal waveform back EMF. In this case, the first and third harmonics are used to produce torque: the other harmonics, and particularly the 7th one, induce effects as torque ripples and parasitic currents.
Thu, 01 Jan 2004 00:00:00 GMThttp://hdl.handle.net/10985/92742004-01-01T00:00:00ZSEMAIL, EricKESTELYN, XavierBOUSCAYROL, AlainThis paper deals with a vector control of n-phase permanent magnet synchronous machine. To use control algorithms already developed for sine-wave 3-phase machines, the spectrum of back electromotive force (EMF) must contain only odd 2k+1 harmonics which verify the following inequality, 1≤ 2k +1< n . In an experimental vector control of a 5-phase drive, two usual algorithms of sine-wave 3-phase machine are thus used to supply a machine with trapezoidal waveform back EMF. In this case, the first and third harmonics are used to produce torque: the other harmonics, and particularly the 7th one, induce effects as torque ripples and parasitic currents.Vectorial formalism for analysis and design of polyphase synchronous machines
http://hdl.handle.net/10985/9155
Vectorial formalism for analysis and design of polyphase synchronous machines
SEMAIL, Eric; BOUSCAYROL, Alain; HAUTIER, Jean-Paul
A vectorial formalism for analysis and design of polyphase synchronous machines without reluctance and saturation effects is described. We prove the equivalence of such a machine with a set of magnetically independent machines, which are electrically and mechanically coupled. Specific problems of polyphase machines can thus be favorably analyzed with this concept. Rules of conception and constraints on electric supply can be deduced. Moreover the vectorial approach, which generalizes the complex phasor method, can also be used to control n-leg Voltage Source Inverters. This methodology is applied to 3-phase and 6- phase synchronous machines.
Wed, 01 Jan 2003 00:00:00 GMThttp://hdl.handle.net/10985/91552003-01-01T00:00:00ZSEMAIL, EricBOUSCAYROL, AlainHAUTIER, Jean-PaulA vectorial formalism for analysis and design of polyphase synchronous machines without reluctance and saturation effects is described. We prove the equivalence of such a machine with a set of magnetically independent machines, which are electrically and mechanically coupled. Specific problems of polyphase machines can thus be favorably analyzed with this concept. Rules of conception and constraints on electric supply can be deduced. Moreover the vectorial approach, which generalizes the complex phasor method, can also be used to control n-leg Voltage Source Inverters. This methodology is applied to 3-phase and 6- phase synchronous machines.Identification of a 7-phase claw-pole starter-alternator for a micro-hybrid automotive application
http://hdl.handle.net/10985/9255
Identification of a 7-phase claw-pole starter-alternator for a micro-hybrid automotive application
BRUYERE, Antoine; HENNERON, Thomas; SEMAIL, Eric; LOCMENT, Fabrice; BOUSCAYROL, Alain; DUBUS, Jean-Marc; MIPO, Jean-Claude
This paper deals with the identification of a new high power starter-alternator system, using both: a Finite Element Method (FEM) modeling and an experimental vector control. The drive is composed of a synchronous 7-phase claw-pole machine supplied with a low voltage / high current Voltage Source Inverter (VSI). This structure needs specific approaches to plan its electrical and mechanical behaviors and to identify the parameters needed for control purpose. At first, a Finite Element Method (FEM) modeling of the machine is presented. It is used for the predetermination of the electromotive forces and of the torque. Experimental results are in good accordance with numerical results. In a second part, resistive and inductive parameters of the drive are determined by an original experimental approach that takes into account each component of the drive: the battery, the VSI and the machine.
Tue, 01 Jan 2008 00:00:00 GMThttp://hdl.handle.net/10985/92552008-01-01T00:00:00ZBRUYERE, AntoineHENNERON, ThomasSEMAIL, EricLOCMENT, FabriceBOUSCAYROL, AlainDUBUS, Jean-MarcMIPO, Jean-ClaudeThis paper deals with the identification of a new high power starter-alternator system, using both: a Finite Element Method (FEM) modeling and an experimental vector control. The drive is composed of a synchronous 7-phase claw-pole machine supplied with a low voltage / high current Voltage Source Inverter (VSI). This structure needs specific approaches to plan its electrical and mechanical behaviors and to identify the parameters needed for control purpose. At first, a Finite Element Method (FEM) modeling of the machine is presented. It is used for the predetermination of the electromotive forces and of the torque. Experimental results are in good accordance with numerical results. In a second part, resistive and inductive parameters of the drive are determined by an original experimental approach that takes into account each component of the drive: the battery, the VSI and the machine.Identification of sensitive R-L parameters of a Multi-phase drive by a vector control
http://hdl.handle.net/10985/9256
Identification of sensitive R-L parameters of a Multi-phase drive by a vector control
BRUYERE, Antoine; SEMAIL, Eric; BOUSCAYROL, Alain; DUBUS, Jean-Marc; MIPO, Jean-Claude
This paper focuses on an experimental method to determine the electric parameters of a seven-phase low-voltage multiphase drive. The drive is a belt driven starter-alternator for powerful cars with Hybrid Electrical Vehicles (HEV) functions. The resistive and inductive parameters are necessary to obtain the six characteristic time constants of the control modeling. Classical direct measurements lead to imprecise results because of very low values for the windings electric resistance (a few mΩ) and inductance (a few μH). Effects of the imprecision on the measurements are all the more important that time constants are obtained by a ratio of cyclic inductances by resistance, with cyclic inductances being a linear combination of seven measured inductances. The methodology for identification detailed in this paper is based on a stator current vector control, in a multi-reference frame. This methodology allows us to get directly these time constants. Numerous measurements allow the robustness of the method to be evaluated
Tue, 01 Jan 2008 00:00:00 GMThttp://hdl.handle.net/10985/92562008-01-01T00:00:00ZBRUYERE, AntoineSEMAIL, EricBOUSCAYROL, AlainDUBUS, Jean-MarcMIPO, Jean-ClaudeThis paper focuses on an experimental method to determine the electric parameters of a seven-phase low-voltage multiphase drive. The drive is a belt driven starter-alternator for powerful cars with Hybrid Electrical Vehicles (HEV) functions. The resistive and inductive parameters are necessary to obtain the six characteristic time constants of the control modeling. Classical direct measurements lead to imprecise results because of very low values for the windings electric resistance (a few mΩ) and inductance (a few μH). Effects of the imprecision on the measurements are all the more important that time constants are obtained by a ratio of cyclic inductances by resistance, with cyclic inductances being a linear combination of seven measured inductances. The methodology for identification detailed in this paper is based on a stator current vector control, in a multi-reference frame. This methodology allows us to get directly these time constants. Numerous measurements allow the robustness of the method to be evaluated