Vectorial formalism for analysis and design of polyphase synchronous machines

Semail, Eric; Bouscayrol, Alain; Hautier, Jean‐Paul

doi:10.1051/epjap:2003034

Cited by 77 publications

(61 citation statements)

References 33 publications

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“…The control loop purpose is to force the i d and i 0 currents to zero and to meet the torque demand using only i q current. This can be calculated using the following expression [46]: …”

Section: F Comparative Studymentioning

confidence: 99%

Space-Vector PWM Control Synthesis for an H-Bridge Drive in Electric Vehicles

Kolli¹,

Béthoux

Bernardinis³

et al. 2013

IEEE Trans. Veh. Technol.

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Abstract-This paper deals with a synthesis of Space Vector PWM control methods applied for a H-bridge inverter feeding a 3-phase Permanent Magnet Synchronous Machine in Electric Vehicle application. First, a short survey of existing power converter architectures, especially those adapted to degraded operating modes, is presented. Standard SVPWM control methods are compared with three innovative ones using EV-drive specifications in the normal operating mode. Then, a rigorous analysis of the margins left in the control strategy is presented for a semiconductor switch failure to fulfill degraded operating modes. Finally, both classic and innovative strategies are implemented in numerical simulation; their results are analyzed and discussed. Index Terms-Motor drives, Inverters, Space vector pulse width modulation (SVPWM), Permanent magnet machines, Semiconductor device reliability I.INTRODUCTIONPower converters are increasingly used in automotive applications for many reasons such as power conditioning, power management, and consumption reduction. As for any embedded transportation system, these power converters are subject to severe constraints especially regarding compactness and vehicle integration. More specifically electric vehicles (EVs) require a high degree of availability (continuity of service). In particular the constraining automotive environment is characterized by severe traction-braking cycles which induce power and thermal cycling during running phases of the vehicle [1]- [2]. Indeed, thermo-mechanical stresses have a significant impact on the lifetime power switches [3]. Consequently, there is a degradation of the semiconductor devices, which finally forces them into a failed state: short-circuit (SC) or open-circuit (OC) [2]. Such failures occurring on single power switches can affect the function of power converters and spread through the traction chain elements. It is then necessary to first isolate the fault, confine it and lastly reconfigure the control algorithms to operate in the presence of the fault. Obviously, the topology of the power converters or the power chain must be adapted to allow operation in degraded mode:-by associating a fourth additional half bridge in a three-phase inverter topology connected to the neutral point of the electric motor [4]. IFSTTAR/COSYS/LTN-Laboratoire des Technologies Nouvelles 2 LGEP-Laboratoire de Génie Electrique de Paris-by using multilevel inverters topologies used in a high power traction drive [5].-by redistributing the control efforts in a four-wheel independently driven electric vehicles [6]… Furthermore, faults may also happen on sensors and can be taken into account by active fault-tolerant control systems. For example in [7]-[8], authors consider a high-performance induction-motor drive for an EV or a hybrid one (HEV). The proposed systems detect a sensor loss or a sensor recovery and dynamically change its strategies to sustain the best control performances.Besides, faults may also occur in the electrical machine and can be considered using fa...

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“…The control loop purpose is to force the i d and i 0 currents to zero and to meet the torque demand using only i q current. This can be calculated using the following expression [46]: …”

Section: F Comparative Studymentioning

confidence: 99%

Space-Vector PWM Control Synthesis for an H-Bridge Drive in Electric Vehicles

Kolli¹,

Béthoux

Bernardinis³

et al. 2013

IEEE Trans. Veh. Technol.

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“…It has been shown [16,17] that a wye-connected n-phase machine with n = 2F + 1 is equivalent to a set of F twophase fictitious machines which are magnetically independent. Each fictitious machine M g is characterized by an EMF, a resistance, an inductance and a family of nh ± g odd harmonics (1 ≤ g ≤ F ).…”

Section: Torque Characterization Of Multiphase Machines and Deduced Cmentioning

confidence: 99%

Fault tolerant multiphase electrical drives: the impact of design

Semail

Kestelyn

Locment

2008

Eur. Phys. J. Appl. Phys.

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Abstract. This paper deals with fault tolerant multiphase electrical drives. The quality of the torque of a vector-controlled Permanent Magnet (PM) Synchronous Machine supplied by a multi-leg Voltage Source Inverter (VSI) is examined in normal operation and when one or two phases are open-circuited. It is then deduced that a seven-phase machine is a good compromise allowing high torque-to-volume density and easy control with smooth torque in fault operation. Experimental results confirm the predicted characteristics.

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“…In the second part, experimental results are given for 1 a vector-controlled 7-phase machine that contains mostly 2 the three imposed harmonics [14,15] It has been shown [16,17] that a wye-connected n-phase 10 machine with n = 2F + 1 is equivalent to a set of F two- …”

mentioning

confidence: 99%

“…The 50 studied prototype [16] is an axial flux PM machine with 51 two external rotors and one internal stator with toroidal 52 windings (see Fig. 3).…”

mentioning

confidence: 99%