Transformerless Inverter for Single-Phase Photovoltaic Systems
Citations
1,162 citations
Cites methods from "Transformerless Inverter for Single..."
...Some circuit topologies or PWM control algorithms in the inverter side can be employed to minimize the leakage current effectively [12]–[14]....
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743 citations
Cites background from "Transformerless Inverter for Single..."
...This disconnection can be done either on the dc side of the inverter (like the topology from [4] and H5 topology from Solar Technologies AG [13]) or on the ac side (like the Highly Efficient and Reliable Inverter Concept (HERIC) topology from Sunways [12])....
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...Transformerless PV inverters use different solutions to minimize the leakage ground current and improve the efficiency of the whole system, an issue that has previously been treated in many papers [4]–[11]....
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561 citations
Cites background from "Transformerless Inverter for Single..."
...One of these topologies is the full bridge with bipolar pulsewidth modulation [5], [11], [12]....
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...References [5], [13], and [14] are proposals for two modifications of the full-bridge topology, which reduce the current ripple and improve the efficiency...
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553 citations
Cites background from "Transformerless Inverter for Single..."
...Furthermore, two passive diodes can be also inserted into the H6 transformerless inverter to achieve the passive clamping performance [83],...
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507 citations
References
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40,330 citations
"Transformerless Inverter for Single..." refers background in this paper
...Furthermore, it strongly reduces the leakage currents between the PV system and the ground, ensures that no continuous current is injected into the grid, and can be used to increase the inverter output voltage level [1], [2], [4]....
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5,911 citations
"Transformerless Inverter for Single..." refers background in this paper
...Depending on the shape of the output voltage waveform, they can be classified in two groups, namely unipolar [ 5 ], [10], [11] and bipolar PWM [4], [5]....
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...Depending on the shape of the output voltage waveform, they can be classified in two groups, namely unipolar [5], [10], [11] and bipolar PWM [4], [ 5 ]....
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...In order to avoid a varying common-mode voltage, the full bridge has to be modulated with bipolar PWM, a modulation strategy that leads the converter to a low efficiency and a high current ripple [ 5 ]....
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...It requires only four insulated gate bipolar transistors (IGBTs) and has a good trade-off between efficiency, complexity and price [ 5 ]....
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3,530 citations
"Transformerless Inverter for Single..." refers background in this paper
...In PV inverters, it is important to achieve a high efficiency in a wide range of power and voltage of the PV array, since both variables exhibit great variations depending on the solar irradiation and ambient temperature [1], [4], [8]....
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...These leakage currents can be avoided, or at least limited, by including damping passive components in the resonant circuit [1], [8]....
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...Typical values of 2 mF for this capacitor limit the reduction in the MPPT efficiency to 1% in a 5-KW PV system [8]....
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...A topology that generates no variable common-mode voltage is the half-bridge family of inverters, with two, three or more levels [1], [4], [8], [9]....
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564 citations