Low-frequency leakage current reduction using active control of single-phase PWM rectifier

2011 ◽  
Author(s):  
Dong Dong ◽  
Dushan Boroyevich ◽  
Paolo Mattavelli
Keyword(s):  
Leakage Current ◽  
Active Control ◽  
Single Phase ◽  
Low Frequency ◽  
Pwm Rectifier ◽  
Current Reduction

A Single-Phase Five-Level Transformer-Less PV Inverter for Leakage Current Reduction

2021 ◽  
pp. 1-1
Author(s):  
Xiaonan Zhu ◽  
Hongliang Wang ◽  
Wenyuan Zhang ◽  
Hanzhe Wang ◽  
Xiaojun Deng ◽  
...  
Keyword(s):  
Leakage Current ◽  
Single Phase ◽  
Pv Inverter ◽  
Current Reduction

scholarly journals Transformerless Quasi-Z-Source Inverter to Reduce Leakage Current for Single-Phase Grid-Tied Applications

Electronics ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 312 ◽  
Author(s):  
Woo-Young Choi ◽  
Min-Kwon Yang
Keyword(s):  
Leakage Current ◽  
Power Efficiency ◽  
High Performance ◽  
Single Phase ◽  
Power Devices ◽  
Common Mode Voltage ◽  
Control Scheme ◽  
Frequency Components ◽  
The Common ◽  
Current Reduction

The conventional single-phase quasi-Z-source (QZS) inverter has a high leakage current as it is connected to the grid. To address this problem, this paper proposes a transformerless QZS inverter, which can reduce the leakage current for single-phase grid-tied applications. The proposed inverter effectively alleviates the leakage current problem by removing high-frequency components for the common-mode voltage. The operation principle of the proposed inverter is described together with its control strategy. A control scheme is presented for regulating the DC-link voltage and the grid current. A 1.0 kW prototype inverter was designed and tested to verify the performance of the proposed inverter. Silicon carbide (SiC) power devices were applied to the proposed inverter to increase the power efficiency. The experimental results showed that the proposed inverter achieved high performance for leakage current reduction and power efficiency improvement.

scholarly journals A New Single-Phase Transformerless Current Source Inverter for Leakage Current Reduction

Energies ◽  
2018 ◽  
Vol 11 (7) ◽  
pp. 1633 ◽  
Author(s):  
Xiaoqiang Guo ◽  
Jianhua Zhang ◽  
Jiale Zhou ◽  
Baocheng Wang
Keyword(s):  
Leakage Current ◽  
Single Phase ◽  
Current Source ◽  
Current Source Inverter ◽  
Current Reduction

scholarly journals Single-Phase Current Source Inverter with Reduced Ground Leakage Current for Photovoltaic Applications

Electronics ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 1618
Author(s):  
Giovanni Migliazza ◽  
Emilio Lorenzani ◽  
Fabio Immovilli ◽  
Giampaolo Buticchi
Keyword(s):  
Leakage Current ◽  
Single Phase ◽  
High Reliability ◽  
Current Source ◽  
Phase Current ◽  
Current Source Inverter ◽  
Point Tracking ◽  
Photovoltaic Application ◽  
Photovoltaic Applications ◽  
Current Reduction

Integrated power electronics for photovoltaic applications has attracted increasing interest, due to the possibility of having grid-connected photovoltaic modules with independent maximum power point tracking and high reliability. In this paper, a single-phase Current Source Inverter (CSI) is discussed for a photovoltaic application. The basic CSI topology will be explained for the sake of completeness, highlighting its main features and analyzing the ground leakage current problem, an important benchmark for photovoltaic application. A novel topology, called CSI5, is proposed in this work. The main feature is the presence of additional switches for ground leakage current reduction. The performance of the proposed topology is assessed by numerical simulation, and the experimental results confirm that this solution is able to strongly reduce the ground leakage current and conduction power losses.

A Single-Phase Soft-Switching Unipolar PWM Rectifier

2013 ◽  
Vol 284-287 ◽  
pp. 2439-2444
Author(s):  
Maoh Chin Jiang ◽  
Huang Kai Fu ◽  
Kao Yi Lu
Keyword(s):  
Power Flow ◽  
Single Phase ◽  
Low Frequency ◽  
Soft Switching ◽  
Input Current ◽  
Pwm Rectifier ◽  
Zero Voltage Switching ◽  
Zero Current Switching ◽  
Sinusoidal Input ◽  
Bidirectional Power Flow

This paper proposed a novel single-phase soft-switching unipolar PWM rectifier (SSUPR) using a simple auxiliary resonant unit. All main switches of high-frequency arm operate at zero-voltage-switching (ZVS) turn-on, while the auxiliary switches operate at zero-current-switching (ZCS) turn-off. All main switches of low-frequency arm operate at 60 Hz to greatly reduce switching losses. Moreover, a soft-switching unipolar PWM strategy is used for the proposed soft-switching rectifier. This strategy results in a better input current waveform than for the bipolar PWM strategy. Furthermore, the proposed rectifier achieves a near unity power factor, a sinusoidal input current and a bidirectional power flow capability. Some experimental results of the proposed SSUPR, rated 500 W and operated at 40 kHz, are presented for verification.

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