Study on a novel low-stress zero current switching technique in power converters

Shao, Tiancong; Zheng, Trillion Q.; Li, Hong; Xue, Yusheng; Han, Na

doi:10.1109/ifeec.2015.7361467

Cited by 4 publications

(3 citation statements)

References 18 publications

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“…This offset is randomly determined within the frequency band limited by the maximum duty cycle. The common method of EMI suppression interference is to reduce the voltage change rate du/dt and the current change rate di/dt of the switching device, which include adding soft switches [16][17][18][19] , gate drive circuits and snubber circuit [20][21][22] . The common passive filters include DM filters composed of DM choke coils and X capacitors, CM filters composed of CM choke coils and Y capacitors.…”

Section: Introductionmentioning

confidence: 99%

The Common Mode Voltage Control Using a Hybrid Compensation Structure and Derivative Method

Zhang

2022

Preprint

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In this paper, the hybrid compensation loop is introduced to the front end of the load, which can increase the electromagnetic interference current shunt loop, and basically eliminate the common mode noise in the three-phase inverter from the perspective of the interference source. The expressions of the controlled voltage source and the parameter calculations of the shunt path are given in detail. The state of the controlled voltage source is determined by the instantaneous voltage of each phase bridge arm, which has already included the sequence of pulse width modulation, so the common mode noise can be eliminated under different modulation modes. An active method of suppressing common mode (CM) is proposed to regulate the high-frequency CM voltages on the AC buses with respect to the ground. The resultant CM compensation voltages are rendered symmetric to the AC common mode noise, so that load midpoint voltage relative to ground remains constant or zero. The experimental results demonstrated that the common mode voltage can be suppressed by the added compensation circuit effectively under the 2D-SVPWM non-zero vector modulation and 3D-SVPWM non-zero vector modulation. The amplitude, harmonics and frequency of the load voltage isn’t affected by the method of eliminating the common mode voltage.

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Section: Introductionmentioning

confidence: 99%

The Common Mode Voltage Control Using a Hybrid Compensation Structure and Derivative Method

Zhang

2022

Preprint

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“…Excessive voltage spikes and oscillations can not only damage the MOSFET, increase switching losses, but also cause serious electromagnetic interference (EMI) [1][2][3] . In order to suppress voltage spikes and oscillations during turn-off, many methods have been proposed in the existing literatures [4][5][6][7][8][9] . Among them, the commonly used methods are active clamp circuit [4] , soft switches [5][6] and snubber circuit [7][8][9] .However, additional capacitance and inductance are needed in these methods, which will reduce the switching frequency and increase switching losses [10] .…”

Section: Introductionmentioning

confidence: 99%

“…In order to suppress voltage spikes and oscillations during turn-off, many methods have been proposed in the existing literatures [4][5][6][7][8][9] . Among them, the commonly used methods are active clamp circuit [4] , soft switches [5][6] and snubber circuit [7][8][9] .However, additional capacitance and inductance are needed in these methods, which will reduce the switching frequency and increase switching losses [10] . Compared to those methods, drive circuit can be well balanced in switching losses and electromagnetic compatibility(EMC), which is a good choice to optimize the switching process [11] .…”

Section: Introductionmentioning

confidence: 99%

A new active gate driver for MOSFET to suppress turn-off spike and oscillation

Jiang

Feng

Yang

et al. 2018

Chin. J. Electr. Eng.

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MOSFETs are widely used in power electronics converters. Due to the high di/dt and dv/dt of the MOSFET and parasitic parameters in the circuit, drain voltage spikes and oscillations will be generated during turn-off, which can affect the safety of the device and degrade the system's electromagnetic compatibility. This paper first studies the relationship between drain voltage spike and gate voltage during turn-off. Based on the effect of gate voltage on drain voltage spike, a new active gate driver that optimizes gate voltage is proposed. The proposed active gate driver detects the slope of the drain voltage and generates a positive pulse in the drain current fall phase to increase the gate voltage, thereby suppressing drain voltage spike and oscillation. In order to verify the effectiveness of the proposed active gate driver, a simulation circuit and an experimental platform are constructed and compared with the conventional gate driver. Simulation and experimental results show that the new active gate driver can effectively suppress the drain voltage spike and oscillation of MOSFETs, and can effectively reduce high-frequency EMI.

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A Novel Method to Reduce Effect of Negative Gate Voltage Spike and Oscillation to Protect Gate Driver

Md,

Punna,

Balasubramanian

2023

2023 IEEE 3rd International Conference on Sustainable Energy and Future Electric Transportation (SEFET)

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Study on a novel low-stress zero current switching technique in power converters

Cited by 4 publications

References 18 publications

The Common Mode Voltage Control Using a Hybrid Compensation Structure and Derivative Method

The Common Mode Voltage Control Using a Hybrid Compensation Structure and Derivative Method

A new active gate driver for MOSFET to suppress turn-off spike and oscillation

A Novel Method to Reduce Effect of Negative Gate Voltage Spike and Oscillation to Protect Gate Driver

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