Sep 30, 2024 · Particularly, the expression of the midpoint current, regarding the modulation index and phase current amplitude, is theoretically derived. This
Jan 31, 2023 · This paper proposes a fault diagnosis method of three-phase inverter based on pulse transform. Firstly, the voltage between DC side midpoint and AC side midpoint is used to
As shown in Figure 3, when the upper and lower switches of any phase bridge arm in the three-phase inverter bridge are turned on at the same time, the system works in the ST mode. the
Apr 25, 2023 · The disadvantage of this method is that the dc voltage utilization ratio is low and the software fault tolerance is dicult to realize. To solve these problems, an improved SVPWM
Nov 30, 2024 · In this paper, a carrier-based modulation algorithm is proposed for the traditional three-dimensional space vector modulation algorithm with the disadvantages of complicated
Jan 31, 2023 · This paper proposes a fault diagnosis method of three-phase inverter based on pulse transform. Firstly, the voltage between DC side midpoint and AC side midpoin
Aug 7, 2024 · Midpoint Voltage of Bridge Arm Based Fault Diagnosis Method of Inverter and Phase Winding for DSEM IEEE Transactions on Industrial Electronics ( IF7.5 ) Pub Date :
Jul 12, 2024 · Subsequently, the OCFD method is introduced, which exclusively depends on the integral value of the voltage at the midpoint of the primary-side switching bridge arm. Following
Apr 17, 2024 · To improve the reliability of Two-level three phase voltage source inverters, a uniform fault tolerant strategy based on space vector pulse width modulation is proposed for
Dec 8, 2016 · A novel fast open-transistor diagnosis approach for voltage-source inverters (VSI) based on calculated bridge arm pole-to-pole (PTP) voltages is proposed in thi
Commonly used when the inverter needs to exchange energy with a low voltage grid, i.e. a four-wire grid or even a microgrid. This type of inverters can be classi ed into: Three-leg split
In order to solve this problem, this article proposes a fault diagnosis method of inverter and phase winding for doubly salient electromagnetic motor (DSEM) based on the midpoint voltage of
Apr 30, 2024 · After that, fault diagnosis is achieved using the normalized detection variables of the ideal bridge arm voltage and the fit bridge arm voltage. Meanwhile, the open-circuit faults
Dec 24, 2013 · The fourth bridge arm is individually controlled. Based on the advantages of the Z-source network and three-phase four-bridge arm inverter, this paper presents Z source three
Aug 7, 2024 · Modulated PLPR-Based Predictive Control With Noise Suppression for LC-Filtered Voltage Source Inverters Performance Analysis of Rapid Capacitor Charging System Based
Apr 17, 2024 · The reconstructed topologies of inverters with different bridge arm faults are different, which makes the basic voltage vector phase of each reconstructed topology
Dec 24, 2013 · This paper presents a Z-source three-phase four-leg inverter which combines a Z-source network with three-phase four-leg inverter. The circuit uses simple SPWM modulation
Apr 30, 2024 · First, the ideal bridge arm midpoint voltage and the actual bridge arm midpoint voltage are derived, and empirical wavelets are used for adaptive banding of the bridge arm
Dec 7, 2023 · The diagnostic methods based on bridge arm voltages proposed in references [17, 18] achieved fast diagnosis, high reliability, and speed by utilizing the characteristics of bridge
Three-Level Midpoint Potential Balance and Harmonic Suppression Strategy Under Low Carrier Ratio Abstract: - An improved virtual space vector modulation method is proposed to address
Aug 7, 2024 · In order to solve this problem, this article proposes a fault diagnosis method of inverter and phase winding for doubly salient electromagnetic motor (DSEM) based on the
Jan 28, 2025 · Figure 4 shows the midpoint voltage uab, output voltage uo, and output current io in the bridge arm under the newly proposed H-SVPWM. Through uab, the inverter operates in
vel inverter leads to low harmonics in the output voltage, causing voltage distortion and seriously reducing the power quality. The unbalanced mid-point voltage also puts more voltage strain on
Oct 1, 2024 · IEEE Transactions on Power Electronics, volume 39, issue 10, pages 13795-13807 Switch Open-Circuit Fault Diagnosis Method Using Bridge Arm Midpoint Voltage Integral for
The reconstructed topologies of inverters with different bridge arm faults are different, which makes the basic voltage vector phase of each reconstructed topology inconsistent, resulting in different calculations.
Two-level three-phase voltage source inverters often apply two control methods: sinusoidal pulse width modulation (SPWM) and space vector pulse width modulation (SVPWM). The SVPWM owns a higher utilization rate of DC voltage and does not require triangular carriers, allowing it to be broadly employed 4, 5, 6.
The difficulty and complexity of SVPWM under different bridge arm faults is considered in Refs. 15, 16, and SVPWM calculation is optimized. According to the “Volt-Second” relation, the equivalence of the calculation formula describing basic voltage vector action time with different reconfiguration topologies is simply narrated in Ref. 15.
Scientific Reports 14, Article number: 8819 (2024) Cite this article To improve the reliability of Two-level three phase voltage source inverters, a uniform fault tolerant strategy based on space vector pulse width modulation is proposed for different leg faults.
The fault-tolerant control of two-level three-phase voltage source inverters has been extensively studied 1, 2, 3, including two reconstruction aspects: hardware topology and software control strategy. Various fault-tolerant reconfiguration topologies of three-phase voltage source inverters have been summarized in Refs. 1, 2, 3.
Since the SVPWM of reconstructing topology in case of a phase A bridge arm fault is the simplest 18, 19, 20, the voltage vectors of phase B and C bridge arm faults in Fig. 3 b,c can be rotated through coordinate transformation, to be consistent with Fig. 3 a.
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