Performance comparison of reluctance synchronous and induction traction drives for electrical multiple units

Germishuizen, Johannes; Merwe, F.S. van der; Westhuizen, K. van der; Kamper, Maarten J.

doi:10.1109/ias.2000.881130

Cited by 33 publications

(10 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When compared to the IM the SynRM has a higher efficiency with a competitive torque/density when compared to the IM, this was extensively illustrated by [1] and [2]. It has also been shown that the SynRM competes well with the induction machine counterpart at rated power of 110 kW for traction applications [3]. Extensive work has also been conducted validating the viability of the SynRM compared to the induction machine [4]- [6].…”

Section: Introductionmentioning

confidence: 95%

A Three-Level Neutral-Point-Clamped Inverter Synchronous Reluctance Machine Drive

Masisi

Pillay

Williamson

2015

IEEE Trans. on Ind. Applicat.

View full text Add to dashboard Cite

This paper is concerned with the use of a three level inverter for a synchronous reluctance machine (SynRM). The SynRM suffers from a poor power factor due to poor machine saliency. This makes it harder to operate the three level NPC inverter due to a strict requirement to have the two dc link capacitor voltages balanced. This paper proposes a new nearest three vector (NTV) modulation algorithm which can balance the two dc link capacitors even at poor machine saliency ratio (poor power factor). In this work a method of sizing the two dc link capacitors based on the machine power is also proposed. A comparison between a two and three level inverter was conducted. The SynRM registered lower d-axis current ripple with a three level inverter indicating lower core losses in the machine.Index Terms-Three level inverter, neutral point (NP) voltage ripple, neutral-point-clamped (NPC), saliency ratio, synchronous reluctance machine (SynRM), core losses. . His research interests include transportation electrification, electric energy storage systems, and automotive power electronics/motor drives.

show abstract

Section: Introductionmentioning

confidence: 95%

A Three-Level Neutral-Point-Clamped Inverter Synchronous Reluctance Machine Drive

Masisi

Pillay

Williamson

2015

IEEE Trans. on Ind. Applicat.

View full text Add to dashboard Cite

show abstract

“…Research has shown that the RSM drive is comparably efficient when compared to the induction machine [3], [4]. This machine however, has a limited constant power speed range in the field weakening area, hence this machine is ideal for a VG drivertrain EV.…”

Section: Introductionmentioning

confidence: 96%

Saliency performance investigation of synchronous machines for position sensorless controlled EV drives

Villet

Prins

Vorster

et al. 2013

2013 IEEE International Symposium on Sensorless Control for Electrical Drives and Predictive Control of Electrical Drives and P

Self Cite

View full text Add to dashboard Cite

In this paper a per unit scale saliency-and saliency shift equation are used to predict the saliency based position sensorless control performance of synchronous machines for EV drives by means of a finite element package. These equations are used in a comparative study of various types of synchronous machines. The machine drives investigated and compared are a reluctance synchronous machine (RSM) hybrid EV drive and two variable gear RSM EV drives. Also included in the investigation are two field intensified permanent magnet (FI-PM) EV drives with asymmetric rotors, one FI-PM machine with a symmetric rotor and one field weakening interior permanent magnet drive. The saliency shift of the different FI-PM machine rotor topologies are also investigated. Closed loop saliency based position sensorless control shows startup torque capabilities of up to 304 Nm of a 32 kW 6-pole RSM. The RSM EV machine is used to investigate possible design modifications to improve on the saliency ratio and shift of synchronous machines. Index Terms-Position sensorless control, EV drives. NOMENCLATURE AND DEFINITIONS Symbols: u, i, ψ Voltage current and flux linkage r, L Resistance and inductance T m , Θ Mechanical torque and inertia T ripple Torque ripple f Machine frequency φ Current angle θ r , ω r Rotor-angle and speed θ e , ω e Electrical-rotor angle and speed Δ, Σ Difference and sum Indices: s, r Stator and rotor α, β Stator fixed cartesian axes d, q Rotor fixed direct and quadrature axes c Carrier frequencyScalar values are written in normal letters, e.g. R or τ , vector values are written in small bold letters, e.g. i or ψ. Subscripts describe the location of the physical quantity, e.g. r s is the stator resistance. Superscripts specify the reference frame of the quantity, e.g. i r s is the stator current vector in the rotor reference frame. Estimated quantities are indicted with a hat, e.g.θ e . Small signal values are represented with δ.

show abstract

“…RSM's with low L d /L q ratios, however, have limited constant power speed range performance; hence, these machines are not suited for an FG EV drivetrain. The studies in [6] and [7] have shown that the efficiency of the RSM, within its rated speed range, is comparable with that of the induction machine (IM), if not better. The RSM is thus well suited for non-PM VG EV drives.…”

Section: Introductionmentioning

confidence: 96%

Variable-Gear EV Reluctance Synchronous Motor Drives—An Evaluation of Rotor Structures for Position-Sensorless Control

Villet

Kamper

2014

IEEE Trans. Ind. Electron.

View full text Add to dashboard Cite

The reluctance synchronous motor (RSM) is identified to be well suited for the variable-gear (VG) electric vehicle (EV) drive. It is shown in this paper, however, that the RSM drive's position-sensorless capability is limited at zero or very small current magnitudes due to a limited saliency magnitude. In this paper, a novel epoxy-resin-casted rotor with no iron ribs is proposed to increase the saliency of the RSM at zero reference current. This rotor RSM is simulated in finite-element (FE) analysis, built, evaluated, and compared with conventional flux barrier rotor RSMs. The effect of rotor skewing on the position-sensorless control (PSC) capability of the RSM is also evaluated by means of FE analysis and measurements. Other performance aspects are also considered in this paper. It is concluded that, overall, the skewed epoxy-resin-casted rotor RSM drive has no PSC problems in the entire load and speed regions and is well suited for VG EV drives.

show abstract

Performance comparison of reluctance synchronous and induction traction drives for electrical multiple units

Cited by 33 publications

References 6 publications

A Three-Level Neutral-Point-Clamped Inverter Synchronous Reluctance Machine Drive

A Three-Level Neutral-Point-Clamped Inverter Synchronous Reluctance Machine Drive

Saliency performance investigation of synchronous machines for position sensorless controlled EV drives

Variable-Gear EV Reluctance Synchronous Motor Drives—An Evaluation of Rotor Structures for Position-Sensorless Control

Contact Info

Product

Resources

About