Dead time compensation for three-level flying capacitor inverter with phase shift PWM

Takahashi, Hiroya; Obara, Hidemine; Fujimoto, Yasutaka

doi:10.1109/amc.2019.8371093

Cited by 10 publications

(6 citation statements)

References 15 publications

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“…The Simulink model for the command's generation is presented in Figure 8, and the resulting one-leg commands are shown in Figure 9. The inverter gate commands, p, high-switch command, and n, low-switch command, are generated from the duty cycles calculations in the PWM modulator, taking into account the dead time with the DeltaD method [21][22][23][24]. This method adds and subtracts to the desired duty cycle a quantity DeltaD proportional to the DeadTime according to the following Equation (4).…”

Section: 𝐷𝑒𝑙𝑡𝑎𝐷 𝑓 𝐷𝑒𝑎𝑑𝑇𝑖𝑚𝑒 (4)mentioning

confidence: 99%

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Advanced Torque Control of Interior Permanent Magnet Motors for Electrical Hypercars

Bianco,

Rubino,

Carello

et al. 2024

WEVJ

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Nowadays, electric vehicles have gained significant attention as a promising solution to the environmental concerns associated with traditional combustion engine vehicles. With the increasing demand for high-performance hypercars, the need for advanced torque control strategies has become paramount. Field-Oriented Control using Current Vector Control represents a consolidated solution to implement torque control. However, this kind of control must take into account the DC link voltage variation and the variation of motor parameters depending on the magnets’ temperature while providing the maximum torque production for specific inverter current and voltage limitations. Multidimensional lookup tables are needed to provide a robust torque control from zero speed up to maximum speed under deep flux-weakening operation. Therefore, this article aims to explore the application of FOC 4D control in electrical hypercars and its impact on enhancing their overall performance and control stability. The article will delve into the principles underlying FOC 4D control and its advantages, challenges, and potential solutions to optimize the operation of electric hypercars. An electric powertrain model has been developed in the Simulink environment with the Simscape tool using a S-function block for the implementation of digital control in C-code. High-power electric motor electromagnetic parameters, derived from a Finite Element Method magnetic model, have been used in the simulation. The 4D LUTs have been computed from the motor flux maps and implemented in C-code in the S-function. The choice of FOC 4D control has been validated in the main load points of a hypercar application and compared to the conventional FOC. The final part of the research underlines the benefits of the FOC 4D on reliability, critical in motorsport applications.

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Section: 𝐷𝑒𝑙𝑡𝑎𝐷 𝑓 𝐷𝑒𝑎𝑑𝑇𝑖𝑚𝑒 (4)mentioning

confidence: 99%

“…The switch commands come from the duty cycles signals, as shown in Figure 16. The inverter dead time is simulated, delaying the commands using the DeltaD method [21].…”

Section: Foc 4d Modelingmentioning

confidence: 99%

Advanced Torque Control of Interior Permanent Magnet Motors for Electrical Hypercars

Bianco,

Rubino,

Carello

et al. 2024

WEVJ

View full text Add to dashboard Cite

show abstract

“…A detailed switching characterization with dead-time effect in all operation states is discussed in [29]. A dead-time compensation method for a three-level voltage-source inverter is proposed in [30]. It is based on the fact that the voltage error caused by dead time depends on current polarity, and inserts the dead time at the instant of turning on and off of switches.…”

Section: Driving Signalmentioning

confidence: 99%

Control Strategies of Mitigating Dead-time Effect on Power Converters: An Overview

Yang

Zhou

et al. 2019

Electronics

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To prevent short-circuits between the upper and lower switches of power converters from over-current protection, the dead time is mandatory in the switching gating signal for voltage source converters. However, this results in many negative effects on system operations, such as output voltage and current distortions (e.g., increased level of fifth and seventh harmonics), zero-current-clamping phenomenon, and output fundamental-frequency voltage reduction. Many solutions have been presented to cope with this problem. First, the dead-time effect is analyzed by taking into account factors such as the zero-clamping phenomenon, voltage drops on diodes and transistors, and the parameters of inverter loads, as well as the parasitic nature of semiconductor switches. Second, the state-of-the-art dead-time compensation algorithms are presented in this paper. Third, the advantages and disadvantages of existing algorithms are discussed, together with the future trends of dead-time compensation algorithms. This article provides a complete scenario of dead-time compensation with control strategies for voltage source converters for researchers to identify suitable solutions based on demand and application.

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“…A phase shift PWM technique for a three-level flying capacitor inverter is proposed in [20] for deadtime compensation. The solution of [20] have offered a simple algorithm for inserting a desired dead-time at turning-on and turning-off the connected power electronic switches without any distortion in the output voltage.…”

Section: Introductionmentioning

confidence: 99%

Mitigating the dead-time effects on harmonics spectrum of inverter waveform by the confined band VSFPWM technique

Attia

Seng

Freddy

et al. 2021

IJPEDS

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The dead-time is necessary to be inserted between the gates drive pulses of the two power electronic switches in a one leg of any inverter to avoid a short circuit in the leg and the DC supply as well. However, adding the dead-time increases the low order harmonics of the output voltage/current waveform of the inverter. This paper investigates the positive effects of decreasing the pulse width modulation (PWM) drive pulses number per fundamental period on the current low order harmonics. In addition, this paper evaluates the impact of the confined band variable switching frequency pulse width modulation (CB-VSFPWM) technique on inverter performance in terms of dead-time mitigating, and consequenctely lowering the low order harmonics. CB-VSFPWM technique reduces the total harmonic distortion (THD) levels in the inverter output current as well. Theoretical analysis of the CB-VSFPWM effectiveness in reducing the negative effect of the dead-time has explained in this study and confirmed by the MATLAB/Simulink simulation results.

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Dead time compensation for three-level flying capacitor inverter with phase shift PWM

Cited by 10 publications

References 15 publications

Advanced Torque Control of Interior Permanent Magnet Motors for Electrical Hypercars

Advanced Torque Control of Interior Permanent Magnet Motors for Electrical Hypercars

Control Strategies of Mitigating Dead-time Effect on Power Converters: An Overview

Mitigating the dead-time effects on harmonics spectrum of inverter waveform by the confined band VSFPWM technique

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