Math Demonstration and Practical Application of Fundamental Voltage Amplitude Linear Output Based SVPWM Overmodulation Control

Zhang, Liwei; Xu, Wen; Liu, Jun; Zheng, Trillion Q.

doi:10.1109/ias.2006.256586

Cited by 4 publications

(5 citation statements)

References 9 publications

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“…In addition, the linearity of the MI must be maintained by using the adjusted voltage vectors so that the fundamental amplitude of the inverter output voltage coincides with the output of the controller. In [27], in order to perform the SVPWMbased single-mode over-modulation method, the modulation coefficient k, which is a value between 0 and 1, is defined as:…”

Section: B Signle-mode Over-modulation Control Strategy Based On Svpwmmentioning

confidence: 99%

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Variable Switching Frequency Control-Based Six-Step Operation Method of a Traction Inverter for Driving an Interior Permanent Magnet Synchronous Motor for a Railroad Car

Park

Jo²,

Jeon³

et al. 2022

IEEE Access

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Most railroad cars employ a natural ventilation cooling method. For this reason, severe problems occur in the control devices for the railroad cars due to the heat generated by the high-power switching loss. Therefore, the traction inverter for the railroad car requires a control method that can reduce the switching loss. In this paper, we propose a control method for an interior permanent magnet synchronous motor in consideration of the driving conditions of the railroad cars. The proposed method combines a variable switching frequency-based synchronous pulse width modulation control method, a flux-weakening control method that considers the maximum voltage modulation index, and an optimized over-modulation method. Through the proposed method, the utilization rate of the DC-link voltage can be maximized while lowering the switching frequency of the traction inverter as much as possible, and the high-performance current control can be performed in the entire speed region of the railroad car. The validity and effectiveness of the proposed method are verified by the simulation results and the experimental results.

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Section: B Signle-mode Over-modulation Control Strategy Based On Svpwmmentioning

confidence: 99%

“…The SVPWM-based single-mode over-modulation method is performed based on (11), by which the fundamental amplitude of the voltage reference vector can be maintained [27].…”

Section: B Signle-mode Over-modulation Control Strategy Based On Svpwmmentioning

confidence: 99%

Variable Switching Frequency Control-Based Six-Step Operation Method of a Traction Inverter for Driving an Interior Permanent Magnet Synchronous Motor for a Railroad Car

Park

Jo²,

Jeon³

et al. 2022

IEEE Access

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show abstract

“…According to the volt-second balance rule, ( 7) can be obtained. Therefore, the duty cycle of each vector can be derived, as shown in (8).…”

Section: The Traditional Four-vector Overmodulation Strategy (Tfos)mentioning

confidence: 99%

“…The overmodulation PWM strategy is widely applied in electric vehicles, mining equipment and other motor drive fields. For example, an overmodulation Energies 2022, 15, 7589 2 of 19 control strategy has been used in the medium-speed range for motor drive control of the TOYOTA hybrid system II (THS II), and the output of the shaft torque has been increased by a maximum of approximately 30% in this range [8]. For a single-phase inverter operating in the overmodulation region, an improved SPWM method is proposed in [9] to eliminate the third harmonic.…”

Section: Introductionmentioning

confidence: 99%

A Harmonic Suppression SVPWM Strategy for the Asymmetric Six-Phase Motor Fed by Two-Level Six-Phase VSI Operating in the Overmodulation Region

et al. 2022

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For the asymmetric six-phase motor fed by a two-level six-phase voltage source inverter (VSI), when the modulation index is less than 0.5774, the motor operates in the linear region, and the harmonics in the Z1 − Z2 subspace can be suppressed to zero. When the modulation index is beyond 0.5774 and less than 0.6221, the motor operates in overmodulation regions, and the harmonics in the Z1 − Z2 subspace cannot be suppressed to zero. To minimize the harmonics in the Z1 − Z2 subspace for these regions, a harmonic suppression strategy, namely, harmonic suppression overmodulation strategy (HSOS), is proposed in this paper. The lower-order harmonics of the Z1 − Z2 subspace, namely, the 5th, 7th, 17th and 19th, are considered. Compared with the traditional four-vector overmodulation strategy (TFOS), the content of the 5th harmonic is reduced by about 20%, and the total harmonic distortion (THDZ1Z2) of these four kinds of harmonics is reduced by about 21% in the proposed HSOS. Finally, the simulation and experiment are carried out to verify the effectiveness of the proposed strategy.

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“…Because of the periodic charging and discharging process of the capacitor, its voltage is pulsating, which can be represented as [10], [11] u is higher than f st . The PWM switching frequency f h is not a constant for PWM regulation mode, and it can be negligible in single pulse mode.…”

Section: Voltage Ripple Analysismentioning

confidence: 99%

Research on voltage optimization for SRG wind power system

Zhao

Tian³

et al. 2013

2013 25th Chinese Control and Decision Conference (CCDC)

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Actual characteristics of Switched Reluctance Generator (SRG) are simply introduced. A novel voltage optimization strategy of combining classical feedback control with excitation angles position control (APC) is proposed considering special work conditions and the application is analyzed in detail. Simulation results show that the voltage optimization can be realized with developed regulation system on the basis of fuzzy logic scheme and excellent electrical energy quality can be sent out with smooth amplitude, rapid response, and low harmonic content.

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Math Demonstration and Practical Application of Fundamental Voltage Amplitude Linear Output Based SVPWM Overmodulation Control

Cited by 4 publications

References 9 publications

Variable Switching Frequency Control-Based Six-Step Operation Method of a Traction Inverter for Driving an Interior Permanent Magnet Synchronous Motor for a Railroad Car

Variable Switching Frequency Control-Based Six-Step Operation Method of a Traction Inverter for Driving an Interior Permanent Magnet Synchronous Motor for a Railroad Car

A Harmonic Suppression SVPWM Strategy for the Asymmetric Six-Phase Motor Fed by Two-Level Six-Phase VSI Operating in the Overmodulation Region

Research on voltage optimization for SRG wind power system

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