Field weakening of a surface mounted permanent magnet motor by winding switching

Hemmati, Siroos; Lipo, T.Α.

doi:10.1109/speedam.2012.6264472

Cited by 25 publications

(18 citation statements)

References 4 publications

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“…The proposed method has an advantage in terms of flux weakening compared with the other methods. Although it utilizes the highest number of additional switches, the implementation of the single inverter still imparts an advantage in favor of the proposed method over the methods presented in [14]- [19] in terms of cost. Notably, the cumulative/differential switching method for a dual inverter can utilize the voltage boost technique, which increases the available voltage by 1.73 times [16].…”

Section: Performance Comparison Of Winding Switching Methodsmentioning

confidence: 99%

“…Numerous winding switching methods have been proposed. Among them, the most widely used methods are series/parallel switching [7], [8]; wye/delta switching [9], [10]; tapped winding switching [11], [12]; and cumulative/differential switching [14]- [20]. It is also possible to change the pole number via winding switching to improve the starting torque of line-start permanent magnet synchronous machines [21], [22].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, it can still be combined with a conventional fluxweakening control by applying a negative Id current [17]. However, this method requires an expensive dual-inverter topology [14]- [19].…”

Section: Introductionmentioning

confidence: 99%

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Investigation Study of Multi-Mode Multi-Speed Operation Method for Surface-Mounted Permanent Magnet Synchronous Machines

Sin

Ayub

2020

IEEE Access

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Typically, a surface-mounted permanent magnet synchronous machine (SPMSM) has a poor flux-weakening performance due to its low synchronous inductance; hence, its speed is proportional to the supply voltage. A relatively high DC-link voltage is required to operate an SPMSM at higher speeds. This paper proposes a multi-mode multi-speed operation method to overcome this issue. With this method, the total line-to-line back electromotive force (EMF) is modified using the winding switching. Each phase of the stator winding is divided into two equal coils. There are four modes of operation of the machine. In mode I, the three-phase stator winding is connected in a wye configuration. In modes II, III, and IV, the winding is reconfigured such that the sum of the individual back EMFs of the coils exhibits a difference in voltages between the line terminals. The back EMF in these modes decreased by 1.74, 3.67, and 6.49 times, respectively, compared with that in mode I. This resulted in a four-speed operation, with base speeds of 1, 1.97, 3.68, and 7.47 pu in modes I-IV, respectively. Herein, the analytical model of the machine and drive topology are explained and demonstrated. Simulation results obtained using the 2-D finite element method are presented along with the experimental measurements to verify the feasibility of the proposed method. INDEX TERMS flux weakening, multi-speed operation, permanent magnet synchronous machine, winding configuration, winding switching. LIST OF ABBREVIATIONS Back EMF Back electromotive force BLDC Brushless DC CAD Computer-aided design CD Circle diagram FEA Finite element analysis FPGA Field-programmable gate array IGBT Insulated-gate bipolar transistor

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Section: Performance Comparison Of Winding Switching Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigation Study of Multi-Mode Multi-Speed Operation Method for Surface-Mounted Permanent Magnet Synchronous Machines

Sin

Ayub

2020

IEEE Access

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“…This method requires no daxis current to be injected, thus maximum torque per ampere (MTPA) can be maintained, as long as the maximum desired operating speed is twice the base speed. Actual implementation of this method could be achieved using back-to-back thyristors as suggested in [4].…”

Section: Review Of Existing Methods For Constant Power Operationmentioning

confidence: 99%

A Comparative Study of Constant Power Operation Techniques for Low Inductance Machines

Lawhorn

Taran

Rallabandi

et al. 2018

2018 IEEE Transportation Electrification Conference and Expo (ITEC)

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In traditional electric machines, it is usually possible to achieve constant power high-speed operation by employing field weakening through the injection of a negative d-axis current component. However, in machines with low armature inductance, such as high power density permanent magnet synchronous machines, and more specifically, coreless machines, which are gaining increasing attention because of their high specific torque, the extended speed range obtained using this method is very narrow. This paper summarizes the performance characteristics of existing approaches for obtaining constant power operation and proposes two new techniques, specially applicable to coreless axial flux permanent magnet machine namely, current weakening and relative winding rotation.

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“…This paper focuses on an Electric Controlled Permanent Magnet Excited Synchronous Machine (ECPMSM) as hybrid topology which has already been analyzed in details by the authors [2,[9][10][11][12] and others in [1,5,13] with Field Oriented Control (FOC) for EV applications.…”

Section: Introductionmentioning

confidence: 99%

Improved Control System of PM Machine with Extended Field Control Capability for EV Drive

Paplicki

Piotuch

2015

Advances in Intelligent Systems and Computing

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Abstract. The paper presents novel concept of prototyping, analysis and optimization of an Electric Controlled Permanent Magnet Excited Synchronous Machine (ECPMSM) drive with a field weakening capability for electric vehicle (EV). Operation modes, features, characteristics, FEA and analytical results, improved control system of the machine, and schematic diagram of EV central drive system with ECPMSM machine were also presented.

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Field weakening of a surface mounted permanent magnet motor by winding switching

Cited by 25 publications

References 4 publications

Investigation Study of Multi-Mode Multi-Speed Operation Method for Surface-Mounted Permanent Magnet Synchronous Machines

Investigation Study of Multi-Mode Multi-Speed Operation Method for Surface-Mounted Permanent Magnet Synchronous Machines

A Comparative Study of Constant Power Operation Techniques for Low Inductance Machines

Improved Control System of PM Machine with Extended Field Control Capability for EV Drive

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