scholarly journals An Investigation of Zero-Voltage-Switching Condition in a High-Voltage-Gain Bidirectional DC–DC Converter

Electronics ◽  
2021 ◽  
Vol 10 (16) ◽  
pp. 1940
Author(s):  
Nhat-Truong Phan ◽  
Anh-Dung Nguyen ◽  
Yu-Chen Liu ◽  
Huang-Jen Chiu
Keyword(s):  
High Voltage ◽  
Switching Frequency ◽  
Maximum Output ◽  
Voltage Gain ◽  
Time Duration ◽  
Zero Voltage Switching ◽  
Light Load ◽  
High Voltage Gain ◽  
Zero Voltage ◽  
Voltage Switching

This paper analyzes the zero-voltage switching (ZVS) for all switches in a high-voltage-gain bidirectional DC–DC converter in triangular conduction mode (TCM) operation without any auxiliary components. From the ZVS condition, the reverse inductor current can be derived, and the required dead-time duration between the main switches and SR switches can be determined, which leads to a reduction in the duty cycle loss. Moreover, the relationship between switching frequency and load in TCM operation can be determined, which helps to reduce the peak-to-peak inductor current and reduce the conduction loss at light load. An experimental prototype of a high-voltage-gain bidirectional DC–DC converter is implemented with a maximum output power of 48 W. The result shows the peak efficiency of 97% and 96.8% in the forward and reverse directions, respectively.

Isolated Zero-Voltage-Switching DC-DC Converter with High Voltage Gain

EPE Journal ◽  
2013 ◽  
Vol 23 (1) ◽  
pp. 5-12 ◽  
Author(s):  
Do Hyun-Lark
Keyword(s):  
High Voltage ◽  
Voltage Gain ◽  
Zero Voltage Switching ◽  
High Voltage Gain ◽  
Zero Voltage ◽  
Voltage Switching

Phase-shifted Series Resonant Converter with Zero Voltage Switching Turn-on and Variable Frequency Control

2017 ◽  
Vol 8 (3) ◽  
pp. 1184 ◽  
Author(s):  
Mohamed Salem ◽  
Awang Jusoh ◽  
Nik Rumzi Nik Idris ◽  
Tole Sutikno ◽  
Yonis.M.Yonis Buswig
Keyword(s):  
Output Voltage ◽  
Frequency Control ◽  
Switching Frequency ◽  
Resonant Converter ◽  
Zero Voltage Switching ◽  
Light Load ◽  
Wide Range ◽  
Series Resonant ◽  
Zero Voltage ◽  
Voltage Switching

This paper presents a phase shifted series resonant converter with step up high frequency transformer to achieve the functions of high output voltage, high power density and wide range of Zero Voltage Switching (ZVS). In this approach, the output voltage is controlled by varying the switching frequency. The controller has been designed to achieve a good stability under different load conditions. The converter will react to the load variation by varying its switching frequency to satisfy the output voltage requirements. Therefore in order to maintain constant output voltage, for light load (50% of the load), the switching frequency will be decreased to meet the desired output, while for the full load (100%) conditions, the switching frequency will be increased. Since the controlled switching frequency is limited by the range between the higher and lower resonant frequencies , the switches can be turned on under ZVS. In this study, a laboratory experiment has been conducted to verify the effectiveness of the system performance.

A Novel Soft Switching Based Fuzzy Logic Control for Single Phase Inverter

2014 ◽  
Vol 573 ◽  
pp. 143-149
Author(s):  
N. Ismayil Kani ◽  
B.V. Manikandan ◽  
Prabakar Perciyal
Keyword(s):  
Fuzzy Logic ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Soft Switching ◽  
Switching Frequency ◽  
Pwm Inverter ◽  
Zero Voltage Switching ◽  
Control Scheme ◽  
Zero Voltage ◽  
Voltage Switching

—This The Pulse Width Modulation (PWM) DC-to-AC inverter has been widely used in many applications due to its circuit simplicity and rugged control scheme. It is however driven by a hard-switching pulse width modulation (PWM) inverter, which has low switching frequency, high switching loss, high electro-magnetic interference (EMI), high acoustic noise and low efficiency, etc. To solve these problems of the hard-switching inverter, many soft-switching inverters have been designed in the past. Unfortunately, high device voltage stress, large dc link voltage ripples, complex control scheme and so on are noticed in the existing soft-switching inverters. This proposed work overcomes the above problems with simple circuit topology and all switches work in zero-voltage switching condition. Comparative analysis between conventional open loop, PI and fuzzy logic based soft switching inverter is also presented and discussed. Keywords—Zero voltage switching, Inverter, Dc link, PI controller, Fuzzy logic system control ,Modulation strategy, Soft switching

High Step-Up Boost Converter with Neural Network Based MPPT Controller for a PEMFC Power Source Used in Vehicular Applications

2018 ◽  
Vol 19 (5) ◽  
Author(s):  
K. Jyotheeswara Reddy ◽  
N. Sudhakar ◽  
S. Saravanan ◽  
B. Chitti Babu
Keyword(s):  
Neural Network ◽  
Fuel Cell ◽  
Electric Vehicles ◽  
High Voltage ◽  
Boost Converter ◽  
Maximum Power ◽  
Switching Frequency ◽  
Voltage Gain ◽  
High Voltage Gain ◽  
Mppt Controller

AbstractHigh switching frequency and high voltage gain DC-DC boost converters are required for electric vehicles. In this paper, a new high step-up boost converter (HSBC) is designed for fuel cell electric vehicles (FCEV) applications. The designed converter provides the better high voltage gain compared to conventional boost converter and also reduces the input current ripples and voltage stress on power semiconductor switches. In addition to this, a neural network based maximum power point tracking (MPPT) controller is designed for the 1.26 kW proton exchange membrane fuel cell (PEMFC). Radial basis function network (RBFN) algorithm is used in the neural network controller to extract the maximum power from PEMFC at different temperature conditions. The performance analysis of the designed MPPT controller is analyzed and compared with a fuzzy logic controller (FLC) in MATLAB/Simulink environment.

Novel inverter with zero voltage switching (ZVS) commutation circuit for high-voltage/high-power motor drives

2010 ◽  
Author(s):  
Akihisa Matsushita ◽  
Kazuyasu Takimoto ◽  
Kentaro Suzuki ◽  
Hiromichi Tai ◽  
Ryoichi Kurosawa ◽  
...  
Keyword(s):  
High Voltage ◽  
High Power ◽  
Motor Drives ◽  
Zero Voltage Switching ◽  
Zero Voltage ◽  
Voltage Switching ◽  
Commutation Circuit
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