Three phase current reconstruction method using predictive current in three shunt sensing PWM inverter

To detect the three-phase current in the complex plane of a DC link shunt inverter, an algorithm for restoring the current is required. In this paper, a method of dividing the detection voltage and the compensation voltage to match the output voltage as much as possible to reduce the total harmonic distortion while restoring the current is proposed. In addition, an overmodulation algorithm for a 12-step output, which corresponds to the largest voltage in a DC link shunt inverter, is proposed, and a current recovery method in the overmodulation region is proposed. To determine how to ensure a linear output voltage, the fundamental frequency of the output voltage is analyzed through a Fourier series, and a new voltage vector whose fundamental frequency amplitude is equal to the amplitude of the command voltage is calculated. Finally, the performance of the proposed algorithm is verified through simulation and experimentation. The output of a motor was increased by using overmodulation, and the harmonics of the current based on the output voltage were analyzed through a Fourier series.

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“…Therefore, to detect two-phase current, the output PWM in the undetected area must be distorted. min T is defined as follows [4]- [6].…”

Section: Current Recovery Algorithmmentioning

confidence: 99%

Overmodulation Strategy Using DC-Link Shunt Resistor Inverters to Maintain Output Voltage Linearity

Kwon¹,

Son

Lim

et al. 2021

IEEE Access

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Total Harmonic Distortion Comparison Analysis between High-Power Density Inverter and Multilevel Inverter

Khalid

Fahmi

Fang

et al. 2021

2021 IEEE 19th Student Conference on Research and Development (SCOReD)

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The control strategy of In-wheel motor drive system using inverter leg shunt resistors

Moon¹,

Kim²,

Lee³

et al. 2021

2021 24th International Conference on Electrical Machines and Systems (ICEMS)

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Three phase current reconstruction method using predictive current in three shunt sensing PWM inverter

Cited by 3 publications

References 9 publications

Overmodulation Strategy Using DC-Link Shunt Resistor Inverters to Maintain Output Voltage Linearity

Overmodulation Strategy Using DC-Link Shunt Resistor Inverters to Maintain Output Voltage Linearity

Total Harmonic Distortion Comparison Analysis between High-Power Density Inverter and Multilevel Inverter

The control strategy of In-wheel motor drive system using inverter leg shunt resistors

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