A Single‐Phase Buck‐Boost Matrix Converter with Low Switching Stresses

Ashraf, Naveed; Izhar, Tahir; Abbas, Ghulam

doi:10.1155/2019/6893546

Cited by 14 publications

(24 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Simulink/MATLAB-based environment is one of the effective simulation tools used to explore the validation of the power converting circuits. Figures 8 (a [13], [17] and [21]. All the simulation results of Figures 8 (a) to (j) are plotted with a resistive load of 50 Ω and input voltage of 30 V. The output and input current waveforms with this load are illustrated in Figures 9 (a) and (c).…”

Section: A Simulation Resultsmentioning

confidence: 99%

“…But this converter is operated only in buck mode with bipolar voltage characteristics. All possible operating modes of a direct ac-ac converter with any polarity of the input source voltage are realized in the power converting topologies developed in [20,21]. The issues of high voltage and current stresses are tackled through the proper switching algorithms.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An Improved Bipolar Voltage Boost AC Voltage Controller With Reduced Switching Transistors

et al. 2021

Self Cite

View full text Add to dashboard Cite

Single-stage power conversion with simple circuit arrangement is one of the attractive features of direct bipolar voltage ac-ac converters. This increases their potency in various applications that require voltage and frequency regulation. The grid voltage compensators, direct variable speed ac-ac drives, and induction heating systems require inverting and non-inverting operation of the input voltage. Their size, cost, and circuit complexity directly depend on the number of switching transistors, as the operation of each transistor requires the use of one gate drive circuit (GDC) and one isolated dc power supply (IDCPS). The size and cost of GDC and IDCPS are much larger than that of switching transistors. The use of fewer switching transistors also ensures low conversion losses and simplifies the switching schemes. Therefore, this research proposes a new ac-ac converter that is realized as a bipolar boost ac voltage controller having a low count of switching transistors. The suggested topology also eliminates the shoot-through of the input source or output filtering capacitor. The characteristics of the proposed circuit are explored through simulation results obtained through the Simulink platform. The confirmation of the simulation results is validated through the laboratory prototype.INDEX TERMS AC converter, bipolar voltage, grid voltage compensator, induction heating system, shoot through.

show abstract

Section: A Simulation Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Improved Bipolar Voltage Boost AC Voltage Controller With Reduced Switching Transistors

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…Its inverting mode can only be realized in a buckboost manner that has the problem of high switching voltage and current. This problem is tackled in [39], [40] by lowering the switching voltages and currents to reduce the switching losses. The inverting and non-inverting operating modes are identical, but their conduction losses remain the same as in [38], as each of their operating modes requires the conduction of three MOSFET-diode pairs To overcome the drawbacks suffered by [37], [38], this research, therefore, introduces an alternate ac-to-ac buck topology (see Fig.…”

Section: Introductionmentioning

confidence: 99%

A New Single-Phase AC Voltage Converter With Voltage Buck Characteristics for Grid Voltage Compensation

et al. 2020

Self Cite

View full text Add to dashboard Cite

Voltage sags and swells are the major problems of the power distribution system that arise due to uneven distribution of the single-phase and nonlinear loads. They severely degrade the power quality and may cause the failure of the equipment at the user's side. The voltage sag and swell issues are compensated by operating the AC voltage controllers with bipolar voltage gain characteristics. In these converters, high switching voltage and current, and a large number of switching devices are the main issues that cause unwanted power losses and result in reduced efficiency of the system. High voltage stresses may cause device failure due to the increase in dv/dt rating. The large count of switching devices results in high cost and high conversion losses. So here, we propose a novel AC converter with fewer switching devices that reduces switching voltage and current to have low conversion losses. The amplitude of the output is governed through the direct PWM control (DPWM) of one switch that controls the switching state of the other switch indirectly called indirect PWM control switch (IDPWM). The detailed analysis of the proposed converter is carried out to compare its performance with the existing converters. MATLAB/Simulink environment-based simulation results are proved through the experimental results obtained by developing a hardware prototype. INDEX TERMS Bipolar voltage gain, power distribution system, power quality, PWM control, switching and conduction losses, switching voltage, voltage sag and swell.

show abstract

“…The typical frequency range for these applications lies from 20 kHz to 100 kHz. The output frequency can be regulated through dual converters [7,8] and direct alternating current to alternating current (ac-to-ac) converters [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…However, their switching sequences are complex and have high switching voltage and current stresses. The problem of high switching voltage is solved in [9,10] by using eight controlled switches, but they require complex switching sequences.…”

Section: Introductionmentioning

confidence: 99%

A New Single-Phase Direct Frequency Controller Having Reduced Switching Count without Zero-Crossing Detector for Induction Heating System

et al. 2020

Self Cite

View full text Add to dashboard Cite

Induction heating (IH) is an environmentally friendly solution for heating and melting processes. The required high-frequency magnetic field is accomplished through frequency controllers. Direct frequency controllers (DFC) are preferred to dual converters as they have low conversion losses, compact size, and simple circuit arrangement due to low component count. Numerous frequency controllers with complex switching algorithms are employed in the induction heating process. They have a complicated circuit arrangement, and complex control as their switching sequences have to synchronize with source voltage that requires the zero-crossing detection of the input voltage. They also have a shoot-through problem and poor power quality. Therefore, this research proposes a novel frequency controller with a low count of six controlled switching devices without a zero-crossing detector (ZCD) having a simple control arrangement. The required switching signals are simply generated by using any pulse-width-modulated (PWM) generator. The performance of the proposed topology is verified through simulation results obtained using the MATLAB/Simulink environment and experimental setup.

show abstract

A Single‐Phase Buck‐Boost Matrix Converter with Low Switching Stresses

Cited by 14 publications

References 37 publications

An Improved Bipolar Voltage Boost AC Voltage Controller With Reduced Switching Transistors

An Improved Bipolar Voltage Boost AC Voltage Controller With Reduced Switching Transistors

A New Single-Phase AC Voltage Converter With Voltage Buck Characteristics for Grid Voltage Compensation

A New Single-Phase Direct Frequency Controller Having Reduced Switching Count without Zero-Crossing Detector for Induction Heating System

Contact Info

Product

Resources

About