Zero-Voltage Switching DC Link Single-Phase Pulsewidth-Modulated Voltage Source Inverter

Gurunathan, Ranganathan; Bhat, A.K.S.

doi:10.1109/tpel.2007.904169

Cited by 51 publications

(21 citation statements)

References 13 publications

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“…The duty ratio of auxiliary switch S a is defined in (11). If we ignore the short resonant processes, D a can be approximately calculated by (36).…”

Section: A Duty Ratio Of Auxiliary Switch S Amentioning

confidence: 99%

“…Then D a is expected to be as large as possible to reduce the voltage of clamping capacitor according to (11). When the auxiliary switch is turned off by v gsa , the voltage across both phase legs is clamped to zero and the inverter cannot transfer active power to the grid.…”

Section: A Duty Ratio Of Auxiliary Switch S Amentioning

confidence: 99%

“…However, the voltage stress of the inverters discussed above is higher than the DC bus voltage. The device voltage of the ZVS DC link single-phase inverter in [11] is clamped to the DC bus voltage by changing the configuration of the auxiliary resonant branch and a modified unipolar PWM scheme is applied to achieve the zero-voltage switching. Besides, soft-switching technique is also applied in the AC side of full-bridge inverters.…”

Section: Introductionmentioning

confidence: 99%

“…The maximum efficiency is 98.2%, but its auxiliary circuit is complex. Some key parameters of these soft-switching full-bridge inverters are listed in Table I. According to the predecessors' research, the DC side ZVS full-bridge inverters [10] [11] have the simplest structure. With this principal advantage, this paper mainly focuses on improving the efficiency and power density of DC side ZVS full-bridge inverter.…”

Section: Introductionmentioning

confidence: 99%

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A ZVS Grid-Connected Full-Bridge Inverter With a Novel ZVS SPWM Scheme

Chen

et al. 2016

IEEE Trans. Power Electron.

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A Zero-Voltage Switching (ZVS) grid-connected full-bridge inverter and its modulation schemes are investigated. A novel sinusoidal pulse width modulation scheme for the ZVS full-bridge inverter (ZVS SPWM) is proposed in this paper. The ZVS SPWM is evolved from the double-frequency (DF) SPWM by adding gate drive to the auxiliary switch. The ZVS condition is analyzed and the circulation loss of the resonant branch is optimized by adjusting the energy storage in the resonant inductor. The reverse recovery of the body-diode of MOSFET is relieved and ZVS is realized for both main and auxiliary switches. The filter inductors are significantly reduced with higher switching frequency. The design guideline of resonant parameters and the implementation of ZVS SPWM in DSP controller are introduced. The ZVS SPWM scheme is verified on a 3kW inverter prototype. According to the experimental result peak efficiency as 98.8% is achieved. Index Terms-Zero-voltage switching (ZVS), pulse width modulation, full-bridge inverter

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“…The duty ratio of auxiliary switch S a is defined in (11). If we ignore the short resonant processes, D a can be approximately calculated by (36).…”

Section: A Duty Ratio Of Auxiliary Switch S Amentioning

confidence: 99%

Section: A Duty Ratio Of Auxiliary Switch S Amentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A ZVS Grid-Connected Full-Bridge Inverter With a Novel ZVS SPWM Scheme

Chen

et al. 2016

IEEE Trans. Power Electron.

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“…They are three power electronic converter topologies of two-phase inverters for SPIM: two-leg, three-leg, and four-leg inverters. In recent years, the topology with three-leg two-phase with six-transistor bridge voltage source inverter for SPIM drive systems has been preferred by many researchers compared to the other topologies [1]- [13]. This suitable topology to supply the SPIM with two-orthogonal voltages system is cheaper than that of the four-leg inverter, and it gives a better performance in terms of harmonic distortion of the output voltage when compared to that of the two-leg inverter.…”

mentioning

confidence: 99%

Sensorless Indirect Stator Field Orientation Speed Control for Single-Phase Induction Motor Drive

Jemli¹,

Azza²,

Boussak

et al. 2009

IEEE Trans. Power Electron.

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Abstract-The industrial requirements for the control of an induction machine without a mechanical sensor continue to be of interest, as evidenced by the most recent publications. The focus is on improvements of control without a mechanical sensor. A new method for the implementation of a sensorless indirect stator-fluxoriented control (ISFOC) of a single-phase induction motor (SPIM) drive is proposed in this paper. The proposed method of rotor speed estimation is based only on the measurement of the main and auxiliary windings stator currents and that of a reference q-axis current generated by the control algorithm. The error of the measured qaxis current from its reference value feeds the proportional plus integral controller, the output of which is the estimated slip angular frequency. Experimental results for sensorless ISFOC speed control of a SPIM drive are presented and analyzed using a dSPACE system with DS1104 controller board based on the digital signal processor TMS320F240. Digital simulation and experimental results are presented to show the improvement in performance of the proposed sensorless algorithm.

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A novel low‐loss control strategy for bidirectional DC–DC converter

Dung

Hieu

Hsieh

et al. 2017

Circuit Theory & Apps

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Summary Bidirectional DC–DC converter with phase‐shift control is commonly used for hybrid electric vehicle and fuel‐cell vehicle applications. This converter is characterized by simple circuit topology and soft‐switching implementation without additional devices. Despite these advantages, the efficiency is poor at light load condition because of high switching and conduction losses caused by high RMS inductor current. To achieve zero‐voltage switching (ZVS) for all power MOSFETs, a constant offset inductor current is maintained to conduct the antiparallel body diodes before MOSFETs turn on. A control strategy of combining duty ratio and phase‐shift modulation is proposed to reach the constant offset current. By reaching the constant offset current, the RMS inductor current can be reduced significantly, and ZVS can be achieved in all load variation ranges, resulting in high efficiency. A 2.5‐kW prototype is implemented to verify the control scheme, and a minimum efficiency of 97.3% is achieved at light load condition. Copyright © 2017 John Wiley & Sons, Ltd.

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Zero-Voltage Switching DC Link Single-Phase Pulsewidth-Modulated Voltage Source Inverter

Cited by 51 publications

References 13 publications

A ZVS Grid-Connected Full-Bridge Inverter With a Novel ZVS SPWM Scheme

A ZVS Grid-Connected Full-Bridge Inverter With a Novel ZVS SPWM Scheme

Sensorless Indirect Stator Field Orientation Speed Control for Single-Phase Induction Motor Drive

A novel low‐loss control strategy for bidirectional DC–DC converter

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