A Generalized Discontinuous PWM Scheme for Three-Level NPC Traction Inverter With Minimum Switching Loss for Electric Vehicles

Mukherjee, Sahana; Giri, Santu Kr.; Kundu, Sourabh; Banerjee, Subrata

doi:10.1109/tia.2018.2866565

Cited by 69 publications

(20 citation statements)

References 29 publications

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“…index for IZ4 and IZ5 is 0.9. Then, IZ4 = IZ5 = IZ6 = 10.8A for effective value of the current [7]. When the three-phase line is supplied with 220 volts; balancing currents and MCIs are given in Tab.…”

Section: Figure 5 Unbalanced Loads Of Currentsmentioning

confidence: 99%

“…Therefore, many studies have been conducted on energy production and distribution [1][2][3]. Direct current (DC) energy in power lines and different loads is controlled by converting it into changing energy with pulse width modulation (PWM) inverters [4][5][6][7][8][9]. Therefore, the DC power source is derived from either renewable energy sources or alternating current (AC) sources.…”

Section: Introductionmentioning

confidence: 99%

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Power regulation by couple half wave LPWM rectifier at three-phase loads

Can

2019

Teh. glas. (Online)

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The paper presents an application of power control by couple half wave LPWM rectifiers processing at the energy distribution line. The switching method with the components of semiconductor for alternating energy control in the energy distribution line is used on alternating energy sources. In three-phase power line and load, power control and regulation are done with the proposed modulation correction index (MCI). Therefore, the simulation model of 3-phase energy distribution is established after the relationships between the energy sources and the circuit elements are determined by the circuit analysis method. The controls of the current and the voltage are done by trying at the different loads in the line at the simulation. According to the modulation correction index (MCI), currents of unbalanced loads are balanced by the proposed method on the power line. Then, the balance currents and powers that MCI provides are calculated. Finally, a power line of 15 km at length that is created by connecting the model of RLC is tested. Obtained results show the effectiveness of the proposed method.

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Section: Figure 5 Unbalanced Loads Of Currentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Power regulation by couple half wave LPWM rectifier at three-phase loads

Can

2019

Teh. glas. (Online)

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“…However, if the cost function contains both the current distortion and the switching losses, how to choose the weighting factor needs further research. In [33] and [34], the discontinuous pulse width modulation (DPWM) scheme is improved and optimized, which can effectively reduce the switching losses of the inverter, but it is more complicated to use in combination with FCS-MPC. In [35], a method called minimum-loss vector PWM (MLV-PWM) is proposed, the voltage vector sequence is selected in a way that the switching of a VSI leg does not happen during the phase-current maximum to reduce the switching losses.…”

Section: Introductionmentioning

confidence: 99%

Modulated Model-Free Predictive Control With Minimum Switching Losses for PMSM Drive System

Wang

Yang

et al. 2020

IEEE Access

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A modulated model-free predictive control with minimum switching losses (MSL-MMFPC) is proposed to improve the steady-state performance and reduce the switching losses for a permanent magnet synchronous motor (PMSM) drive system. Firstly, two adjacent current vectors are determined based on the predefined first-level cost function, and then, make the current vector at the next control period equal to the reference current vector by modulating the selected current vectors properly. Additionally, in order to keep optimal control performance also in the over-modulation region, a new rotating coordinate frame is used to adjust the optimal voltage vector. Then, the second-level cost function is designed to select the optimal voltage vector sequence, so that the switching of a VSI leg does not happen during the phase-current maximum, which can reduce the switching losses of the inverter. The simulation and experimental results verify the effectiveness of the proposed control method. INDEX TERMS PMSM drive system, modulated model-free predictive control, optimal voltage vector, over-modulation operation, minimum switching losses.

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“…To sum up, how to reduce the switching loss and amplitude of common mode voltage is a problem that must be considered in the high power motor system. At present, domestic and overseas scholars have carried out extensive and in-depth research on the problems of high switching loss [6][7][8][9][10] and high common mode voltage [11][12][13][14][15] of multilevel inverters, and have made a series of achievements. In terms of switching loss reduction, in Reference [6], a closed-loop control strategy based on carrier modulation is proposed, in which the clamping region is inserted in every half fundamental period to reduce switching loss.…”

Section: Introductionmentioning

confidence: 99%

“…The optimal clamping mode and region boundary of the output waveform quality are determined to reduce the switching loss on the basis of satisfying the high output performance of the inverter. In Reference [10], the discontinuous modulation method is also used to set the discontinuous range of phase voltage according to the load power factor, so as to realize the suppression of switching loss of the inverter under the condition of the variable load power factor. In terms of common mode voltage suppression, in Reference [11], a method to reduce the frequency of common mode current by reducing the number of common mode voltage changes is proposed.…”

Section: Introductionmentioning

confidence: 99%

Improved Synchronized Space Vector PWM Strategy for Three-Level Inverter at Low Modulation Index

et al. 2019

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Aimed at reducing the switching loss and common-mode voltage amplitude of high-power medium-voltage three-level inverter under low modulation index conditions, an improved synchronous space vector PWM strategy is proposed in this paper. The switching times in each fundamental period are reduced by the re-division of small regions and the full use of the redundant switching state. The sum of switching algebra is introduced as an evaluation index and the switching state with the minimum value of the sum of switching algebra are adopted. Then, the common mode voltage amplitude is reduced. The theoretical analysis and experimental results show that the improved modulation strategy proposed in this paper can effectively reduce the switching loss and common-mode voltage amplitude of the inverter under the condition of the low modulation index. Moreover, the neutral-point voltage ripple is also reduced simultaneously.

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A Generalized Discontinuous PWM Scheme for Three-Level NPC Traction Inverter With Minimum Switching Loss for Electric Vehicles

Cited by 69 publications

References 29 publications

Power regulation by couple half wave LPWM rectifier at three-phase loads

Power regulation by couple half wave LPWM rectifier at three-phase loads

Modulated Model-Free Predictive Control With Minimum Switching Losses for PMSM Drive System

Improved Synchronized Space Vector PWM Strategy for Three-Level Inverter at Low Modulation Index

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