Hybrid ZVS BCM Current Controlled Three-Phase Microinverter

Amirahmadi, Ahmadreza; Hu, Haibing; Grishina, Anna; Zhang, Qian; Chen, Lin; Somani, Utsav; Batarseh, Issa

doi:10.1109/tpel.2013.2271302

Cited by 75 publications

(15 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are three possible inductor current modulation methods satisfying this requirement: BCM with fixed reverse current, BCM with variable reverse current, and BCM with fixed bandwidth. Experimental results from the 400-W threephase micro-inverter prototype in [17] and [18] show that the maximum efficiency can be achieved in BCM with fixed reverse current modulation. Figure 5 depicts the upper and lower boundaries of BCM with fixed reverse current modulation along with the average inductor current.…”

Section: ⁄mentioning

confidence: 99%

See 1 more Smart Citation

Dynamic Dead-Time Optimization and Phase Skipping Control Techniques for Three-Phase Microinverter Applications

Tayebi

Jourdan

Batarseh

2016

IEEE Trans. Ind. Electron.

Self Cite

View full text Add to dashboard Cite

This paper introduces a combination of two proposed efficiency improvement techniques for a micro-inverter with current mode control zero voltage switching (ZVS) output stages. The first technique is dynamic dead time optimization wherein PWM dead times are dynamically adjusted as a function of load current. The second method is advanced phase skipping control which maximizes inverter efficiency by controlling power on individual phases depending on the available input power from the photovoltaic source. Neither of the techniques require any additional circuit components and both can be easily implemented in digital controller firmware. The two techniques were designed and implemented in a 400-W three-phase microinverter prototype. The experimental results validate the theoretical analysis of these techniques and demonstrate that a significant efficiency improvement can be achieved by combining the two proposed control techniques. Index Terms-Three-phase inverters, micro-inverters, CEC weighted efficiency, Zero Voltage Switching (ZVS), phase skipping, dead time optimization. S. Milad Tayebi (S'09) received the B.

show abstract

Section: ⁄mentioning

confidence: 99%

“…It should be noted that I REF is a function of the available input power and I o selection criteria are addressed in[17].…”

mentioning

confidence: 99%

Dynamic Dead-Time Optimization and Phase Skipping Control Techniques for Three-Phase Microinverter Applications

Tayebi

Jourdan

Batarseh

2016

IEEE Trans. Ind. Electron.

Self Cite

View full text Add to dashboard Cite

show abstract

“…To smooth this power pulsation large (typically electrolytic), decoupling the capacitor is necessary in the DC bus, which negatively affects the reliability of the system [10,11]. Three-phase micro-inverters avoid this drawback at the expense of a higher required DC bus voltage [12,13] and, hence, higher DC/DC boost ratio and, of course, a larger number/size of components.…”

Section: Pv Inverter Structuresmentioning

confidence: 99%

Three-phase Photovoltaic Systems: Structures, Topologies, and Control

Kerekes

Séra

Máthé

2015

Electric Power Components and Systems

View full text Add to dashboard Cite

“…This frequency variation -and especially the high frequencies near the zerocrossing of i a -complicates the filter design, especially with the regulations on emissions above 150 kHz [3] and represents a challenge with regard to the practical implementation of the current control. Prior art has limited the switching frequency in three-phase AC-DC power converters by synchronizing the switching frequency across the three phases under critical conduction mode modulation [19,25]- [27], by employing variable space vector modulation control [28], by clamping the switching frequency to a particular boundary [23], and by fixing the bandwidth of the modulation scheme to a constant value across the full mains cycle [29,30].…”

Section: Introductionmentioning

confidence: 99%

Novel ZVS S-TCM Modulation of Three-Phase AC/DC Converters

Haider

Anderson

Mirić

et al. 2020

IEEE Open J. Power Electron.

View full text Add to dashboard Cite

For three-phase AC-DC power conversion, the widely-used continuous current mode (CCM) modulation scheme results in relatively high semiconductor losses from hardswitching each device during half of the mains cycle. Triangular current mode (TCM) modulation, where the inductor current reverses polarity before turn-off, achieves zero-voltage-switching (ZVS) but at the expense of a wide switching frequency variation (15× for the three-phase design considered here), complicating filter design and compliance with EMI regulations. In this paper, we propose a new modulation scheme, sinusoidal triangular current mode (S-TCM), that achieves soft-switching, keeps the maximum switching frequency below the 150 kHz EMI regulatory band, and limits the switching frequency variation to only 3×. Under S-TCM, three specific modulation schemes are analyzed, and a loss-optimized weighting of the current bands across load is identified. The 2.2 kW S-TCM phase-leg hardware demonstrator achieves 99.7 % semiconductor efficiency, with the semiconductor losses accurately analytically estimated within 10 % (0.3 W). Relative to a CCM design, the required filter inductance is 6× lower, the inductor volume is 37 % smaller, and the semiconductor losses are 55 % smaller for a simultaneous improvement in power density and efficiency.

show abstract

Hybrid ZVS BCM Current Controlled Three-Phase Microinverter

Cited by 75 publications

References 26 publications

Dynamic Dead-Time Optimization and Phase Skipping Control Techniques for Three-Phase Microinverter Applications

Dynamic Dead-Time Optimization and Phase Skipping Control Techniques for Three-Phase Microinverter Applications

Three-phase Photovoltaic Systems: Structures, Topologies, and Control

Novel ZVS S-TCM Modulation of Three-Phase AC/DC Converters

Contact Info

Product

Resources

About