Wide Speed Range Operation by Low-Voltage Inverter-Fed MATRIX Motor for Automobile Traction Motor

Hijikata, Hiroki; Sakai, Yuki; Akatsu, Kan; Miyama, Yoshihiro; Arita, Hideaki; Daikoku, Akihiro

doi:10.1109/tpel.2017.2751581

Cited by 17 publications

(18 citation statements)

References 16 publications

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“…The steadystate operation of the machine was analyzed in cumulative and differential modes under a base speed.  The number of inverter IGBTs decreased as compared to those in [18]- [25].  The back EMF in the differential mode reduced by 3.54 times compared to that in the cumulative mode at 600 rpm, and, combined with field weakening, the speed range of the machine was extended by 3.83 times.…”

Section: Resultsmentioning

confidence: 97%

“…The first coil set consists of coils A, B, and C shifted between each other by 120 electrical degrees. The second coil set comprises coils X, Y, and Z shifted between each other by 120 electrical degrees, and also shifted to the first set by an angle , as in [18]- [25]. Unlike these schemes, however, this winding changeover scheme utilizes a single full-bridge inverter topology and six additional antiparallel thyristor pairs, as shown in Fig.…”

Section: A Proposed Operation Methodsmentioning

confidence: 99%

“…In the winding changeover scheme presented in [18], the machine consists of six coils. The first set comprises coils A, B, and C shifted by 120 electrical degrees between each other.…”

Section: Introductionmentioning

confidence: 99%

“…This method is based on the winding changeover scheme to reduce the induced back EMF. Unlike the schemes in [18]- [25], it utilizes a conventional three-phase full-bridge inverter topology with an additional six bidirectional switches and provides a speed range extension ratio of 3.83. Because the ready-available inverter topology was used, it is possible to decrease the drive cost and its control complexity.…”

Section: Introductionmentioning

confidence: 99%

“…Schemes in [18]- [25] can increase the speed by 3.73 times. In [18], six H-bridge inverters and nine additional switches were used. Although the number of switches is relatively high, four modes of machine operation are available.…”

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confidence: 99%

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Operation Method of Non-Salient Permanent Magnet Synchronous Machine for Extended Speed Range

Sin

Ayub

2020

IEEE Access

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This paper proposes an operation method for the extended speed range of a surface-mounted permanent magnet (SPM) synchronous machine. The proposed method is based on a novel winding changeover scheme. The SPM machine has low synchronous inductance and hence poor field weakening capability. To enhance its field weakening capability, the permanent magnet's flux linkage can be reduced by performing a winding changeover. The proposed operation method increases the base speed of the machine by 3.83 times. In contrast to available two-inverter schemes with four thyristor switches, the proposed scheme utilizes a single-inverter topology drive and six bidirectional switches for the winding changeover. The machine works in two modes: cumulative and differential. In the cumulative mode, winding has a high induced back electromotive force (EMF), whereas in the differential mode, it falls by 3.54 times. The base speed increases approximately by the same ratio. After the mode switch, field weakening control is applied to the machine to further increase the speed range to 3.83 per unit. The proposed operation method was simulated in a commercial two-dimensional finite element method software in both modes under no-load and load operating conditions. The transient analysis was performed during the winding changeover, and speed range operation analysis was also carried out. The experimental results are provided to verify the extension of the speed range operation of the proposed novel winding changeover scheme for an SPM machine. INDEX TERMS efficiency and power factor, extended speed range, field weakening, SPMSM, winding changeover scheme, winding reconfiguration

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Section: Resultsmentioning

confidence: 97%

Section: A Proposed Operation Methodsmentioning

confidence: 99%

“…In the winding changeover scheme presented in [18], the machine consists of six coils. The first set comprises coils A, B, and C shifted by 120 electrical degrees between each other.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Operation Method of Non-Salient Permanent Magnet Synchronous Machine for Extended Speed Range

Sin

Ayub

2020

IEEE Access

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Novel Strategy for Deriving Torque and Speed Curve of an Electric Bicycle Traction Motor Using Initial Step Analysis

Son

Lim

2022

J. Electr. Eng. Technol.

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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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Wide Speed Range Operation by Low-Voltage Inverter-Fed MATRIX Motor for Automobile Traction Motor

Cited by 17 publications

References 16 publications

Operation Method of Non-Salient Permanent Magnet Synchronous Machine for Extended Speed Range

Operation Method of Non-Salient Permanent Magnet Synchronous Machine for Extended Speed Range

Novel Strategy for Deriving Torque and Speed Curve of an Electric Bicycle Traction Motor Using Initial Step Analysis

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

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