A Hybrid Modulation Scheme for Dual-Output Five-Leg Indirect Matrix Converter

Hamouda, Mahmoud; Blanchette, Handy Fortin; Al‐Haddad, Kamal

doi:10.1109/tie.2016.2594038

Cited by 17 publications

(12 citation statements)

References 25 publications

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“…Depending on the operational modes, these currents could have different specifications as summarized in Table 4. Since the stator and rotor side ports experience different frequencies, the maximum current that should be selected for the current rating of the bottom and top switches is equal to I smax + I rmax [35], [36].…”

Section: B Power Switching Ratingmentioning

confidence: 99%

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Dual Mechanical Port Machine Based Hybrid Electric Vehicle Using Reduced Switch Converters

et al. 2019

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Due to the increased environmental pollution, hybrid vehicles have attracted enormous attention in today's society. The two most important factors in designing these vehicles are size and weight. For this purpose, some researchers have presented the use of the dual-mechanical-port machine (DMPM) in hybrid electric vehicles (HEVs). This paper presents two modified converter topologies with a reduced number of switching devices for use on DMPM-based HEVs, with the goal of reducing the overall size and weight of the system. Beside the design of the DMPM in the series-parallel HEV structure along with the energy management unit, the conventional back-to-back (BB) converter is replaced with nine-switch (NS) and five-leg (FL) converters. These converters have never been examined for the DMPM-based HEV, and therefore, the objective of this paper is to reveal the operational characteristics and power flow mechanism of this machine using the NS and FL converters. The simulation analysis is carried out using MATLAB/Simulink considering all HEV operational modes. In addition, two proposed and the conventional converters are compared in terms of losses, maximum achievable voltages, required dc-link voltages, the rating of the components, and torque ripple, and finally, a recommendation is made based on the obtained results. INDEX TERMS Back-to-back converter, dual mechanical port machine, five-leg converter, hybrid electric vehicle, nine-switch converter.

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Section: B Power Switching Ratingmentioning

confidence: 99%

“…Considering same specifications for switches in different topologies, the conduction loss is proportional to the instantaneous current flowing through the switches [35], [36]. For BB converter, the instantaneous currents of the upper and lower ports are related to the currents of stator and rotor windings.…”

Section: Loss Comparisonmentioning

confidence: 99%

Dual Mechanical Port Machine Based Hybrid Electric Vehicle Using Reduced Switch Converters

et al. 2019

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“…Reducing the number of switching devices is desirable; therefore, many research results have shown simplified configurations for DMDS. For example, a reduced-switch-count inverter [1][2][3], a nine-switch inverter [4][5][6][7], a mono inverter [8][9][10], a five-leg inverter [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26], and so on.…”

Section: Introductionmentioning

confidence: 99%

“…There are several control methods for driving dual motors using FLI [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26]. The similarity of these control methods is that the sum of the output voltages supplied to the dual motors is limited to the DC-link voltage.…”

Section: Introductionmentioning

confidence: 99%

Carrier-Based Discontinuous PWM Method for Five-Leg Inverter

Lee

Ryu

2020

IEEE Access

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This paper proposes a rotation carrier-based discontinuous pulse width modulation (CB-DPWM) method for the five-leg inverter (FLI). The FLI based on two-level topology consists of 10 switching devices for driving dual motors. Therefore, two switching devices can be reduced to compare the configuration using two three-leg inverters for driving dual motors. The proposed pulse width modulation (PWM) method is based on the reference signals which are used in existing carrier-based continuous pulse width modulation (CB-CPWM) method for FLI. In the proposed rotation CB-DPWM method, one of fiveleg is periodically clamped to Vdc/2 or-Vdc/2 by adding the offset voltage to the reference voltages of the existing CB-CPWM method. The five reference voltages for all legs are considered to calculate the offset voltage of the proposed rotation CB-DPWM method. Consequently, since the proposed rotation CB-DPWM method has the fewer number of switching than that of the existing CB-CPWM, the switching loss can be reduced and it results in the efficiency improvement. Simulation and experimental results confirm the effectiveness and feasibility of the proposed method. INDEX TERMS Five-leg inverter (FLI), Modulation, rotation Carrier-based discontinuous pulse width modulation (CB-DPWM), Dual-motor driving system

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“…With the aim to avoid the connecting of DC bus capacitors, five-leg power converter (FLC) topologies with a common leg have been adopted by connecting the three-phase machine through three TRIACs to the phases of a similar three-phase grid [20][21][22][23][24][25]. Similar converter topologies were addressed in [26][27][28][29][30][31][32][33] by connecting symmetrical legs in multimotor drives. Apart from the aforementioned advantage, these topologies can be easily implemented and require fewer devices (only three TRIACs).…”

mentioning

confidence: 99%

Open‐circuit fault‐tolerant operation of permanent magnet synchronous generator drives for wind turbine systems using a computationally efficient model predictive current control

Jlassi

Cardoso

2021

IET Electric Power Appl

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Model predictive fault-tolerant current control (MPFTCC) of permanent magnet synchronous generator (PMSG) drives can make a valuable contribution to improving the reliability and availability levels of wind turbines, because back-to-back (BTB) converters are prone to failure. However, MPFTCC suffers from excessive computational burden, because the BTB converter is treated as one system where all feasible voltage vectors (VVs) are used for prediction and evaluation. Accordingly, a computationally efficient MPFTCC algorithm for a PMSG drive is developed and proposed with the ability to handle insulatedgate bipolar transistor open-circuit faults. The candidate VVs of both machine-and grid-side converters are separately predicted and evaluated, which significantly reduces calculation effort. The proposed reconfigurable converter is a five-leg power converter with a common leg that connects the generator first phase to the grid three-phase, ensuring proper postfault reconfiguration of the grid-side inverter. Moreover, a three-switch rectifier is adopted to achieve fault tolerance of the PMSG-side rectifier. Performance of the considered MPFTCC strategies is evaluated by experimental means. 1 | INTRODUCTION Modern wind turbine systems based on direct-drive permanent magnet synchronous generators (PMSGs) with back-to-back (BTB) power converters have become a standard for wind turbine manufacturers, where the development of finite control set model predictive control techniques for both generator and gridconnection control has gained substantial interest in recent years. Although wind turbines have been exploited for more than 4 decades, their reliability and availability levels remain lower than expected [1]. The power converter of a wind turbine is usually associated with a failure rate higher than that of other applications [2]. Power switches are one of the main causes of critical failures [2,3]. In general, these can be divided into open-circuit (O-C) and short-circuit faults. Standard power converters include hardware protection against short-circuit failures, whereas there is no protection in the case of O-C failures. Numerous reliable fault-diagnosis techniques requiring no additional hardware have been proposed in the literature [4-13] for power switch O-C faults in BTB converters. The methods can be classified as current-based or voltage-based. Recently, diagnosis through adaptive thresholds was proposed in [10,11] and later improved in [12,13] with added sensor diagnostic capabilities. These approaches proved that compared with conventional fixed thresholds, an adaptive threshold enables very high immunity to false diagnostics under strong current transients and fast speed variations. Therefore, fault diagnostics are not the topic of this paper. Several topologies have been proposed to endow the gridside converter (GSC) with fault-tolerant capabilities. Redundant topologies have been proposed for creating a different paths for current flow by using TRIACs to connect an extra leg to converter legs [14] or to th...

show abstract

A Hybrid Modulation Scheme for Dual-Output Five-Leg Indirect Matrix Converter

Cited by 17 publications

References 25 publications

Dual Mechanical Port Machine Based Hybrid Electric Vehicle Using Reduced Switch Converters

Dual Mechanical Port Machine Based Hybrid Electric Vehicle Using Reduced Switch Converters

Carrier-Based Discontinuous PWM Method for Five-Leg Inverter

Open‐circuit fault‐tolerant operation of permanent magnet synchronous generator drives for wind turbine systems using a computationally efficient model predictive current control

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