- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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[IEEE 2018 IEEE Power & Energy Society General Meeting (PESGM) - Portland, OR, USA (2018.8.5-2018.8.10)] 2018 IEEE Power & Energy Society General Meeting (PESGM) - A Study on Control Strategy of PV inverter for Harmonic Mitigation in A Microgrid
摘要： This paper presents a study of the control strategies of three-phase grid-connected photovoltaic inverter to mitigate its harmonic current output and improve the power quality of the grid. The operation principle and topology of the PV inverter is analyzed by establishing the state-space mathematical model based on the adaptation of proportional resonant (PR) and quasi-proportional resonant (QPR) controllers. According to the characteristics of the PR and QPR controllers, the theories for mitigating harmonic currents are reviewed. A three-phase ac microgrid with grid-connected inverter systems is then built on Matlab/Simulink and the performances of the inverter controllers for harmonic mitigations are verified by comparing the simulation results.
关键词： quasi-PR controller,Three-phase grid-connected PV system,harmonic compensation,inverter
更新于2025-09-23 15:22:29
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[IEEE 2019 IEEE 3rd Conference on Energy Internet and Energy System Integration (EI2) - Changsha, China (2019.11.8-2019.11.10)] 2019 IEEE 3rd Conference on Energy Internet and Energy System Integration (EI2) - Harmonic Current Detection and Reactive Power Compensation Method for Photovoltaic System Based on FBD Method
摘要： In order to improve the equipment utilization of distributed photovoltaic power generation system, the harmonic and reactive currents generated by grid-connected photovoltaic can be accurately detected and compensated. A phase-locked loop based on second-order generalized integrator (SOGI-PLL) is introduced into the traditional FBD current detection method to separate the positive and negative sequence components of unbalanced voltage and detect the phase and frequency of reference voltage more accurately. The simulation results show that the algorithm can reduce the computational complexity and increase the detection accuracy and steady-state performance.
关键词： harmonic current detection,reactive power compensation,improved FBD method,grid-connected PV system,SOGI-PLL
更新于2025-09-23 15:21:01
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3-Phase grid-connected building integrated photovoltaic system with reactive power control capability
摘要： Recently, a tendency in the growing of grid-connected building integrated photovoltaic (BIPV) systems has been noticed in most countries. Hence, high penetration of PV power into the system network can be observed in many points in the network. This may cause severe problems on the distribution network due to the intermittent nature of PV systems. As a feasible solution, the reactive power capability of voltage source inverter in PV systems can be employed rather than approaching expensive grid infrastructures in the distribution network. The purpose of this study is to implement a 3-phase grid-connected (BIPV) system with reactive power control to regulate the system voltage and improve the system power factor. Subsequent to this, a specific system model has been designed and developed in MATLAB Simulink application. The selection of PV system specifications is based on practical system implementation. The inverter control system along with the reactive power control has been developed for the proper system operation at different system conditions to reduce the var compensation on the utility grid. Better system accuracy of the developed system model has been found by validating with real system data. The overall system performance has indicated that the effective utilization of reactive power control of a grid-connected PV system yields to a stable, reliable and cost-effective system network operation which reduces the heavy burden on the utility grid to control the PV system effects.
关键词： Reactive power control,Voltage source inverter,Grid-connected PV system,Voltage regulation
更新于2025-09-23 15:19:57
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[IEEE 2019 IEEE Industry Applications Society Annual Meeting - Baltimore, MD, USA (2019.9.29-2019.10.3)] 2019 IEEE Industry Applications Society Annual Meeting - Enhancement of Fault ride through strategy for single-phase grid-connected photovoltaic systems
摘要： Increasing efficiency and decreasing cost of Photovoltaic (PV) panels has led to the rise of many PV Plants. Considering their evolution, Grid standards require PV systems to remain connected and support the grid by providing reactive power during a fault. In order to achieve this, a control system that provides Fault-Ride-Through (FRT) capability for grid-connected PV systems is proposed. The FRT requirements, i.e., injecting a minimum 2% reactive current for every 1% change in the voltage, and limiting the current overshoot of the voltage source converter switches are met by the designed controller. During a fault, when the active power of the PV plant is decreased, the controller allows reactive power to be injected into the grid. In case the fault prolongs over a certain stipulated time as described by grid codes then the PV system is disconnected from the grid until the fault is cleared. Simulations verify that the proposed control system achieves the FRT requirements when providing FRT for symmetrical and asymmetrical faults.
关键词： Grid-Connected PV system,Grid codes,Reactive power compensation,Fault ride through
更新于2025-09-16 10:30:52
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New approach for maximizing generation and optimal utilization of available space for solar PV system
摘要： To accomplish an enormous demand of power with solar energy, a cost effective and optimum system has to be developed which works in synchronisation with the existing grid. The Government in developing countries like India is providing momentous opportunities and marvellous schemes to promote renewable energy sources like solar for generating power. This paper aims to analyse the generation of power from solar photovoltaic (PV) systems economically and efficiently as it is always a challenge for the design engineer to develop an economical and efficient solar PV system. Apart from technical issues, structural aspects also affect the power generation from PV modules. This paper proposes an innovative design of non-movable tracking system that enhances the power generation of PV modules by just providing two grooves in the mounting structure in place of the tracking system. A formula for the optimum space calculation for PV installation is also proposed in this paper. A comparative analysis of total annual energy generated by the hardware setup and the results obtained using software of the rooftop solar PV system has also been analysed for practical consideration. To verify the results, first, the system has been simulated using the PVSYST software considering all practical and existing realistic losses like PV loss due to irradiance and temperature, array soil loss, module quality loss, array mismatch loss, ohmic wiring loss, and inverter loss which formulate a bonafide case of consideration and then hardware implementation of the proposed system. The hardware and software results have been compared to analyse the proposed topologies adopted to address the aforesaid problems.
关键词： grid connected PV system,optimum module placement,solar PV system,PVSYST software,module tilt angle
更新于2025-09-04 15:30:14
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[IEEE 2018 International Conference on Control, Power, Communication and Computing Technologies (ICCPCCT) - Kannur,Kerala, India (2018.3.23-2018.3.24)] 2018 International Conference on Control, Power, Communication and Computing Technologies (ICCPCCT) - Proportional Resonant Based Current Control Of Three-Phase Single Stage Grid Connected PV System
摘要： This paper presents an analysis of Proportional Integral (PI) controller based current control strategy and a Proportional Resonant (PR) controller based current control strategy for a three phase single stage grid connected PV system. PR controller has an advantage of tracking sinusoidal reference current without steady state error. It eliminates the number of coordinate transformation and reduces the complexity of control. It also reduces the current harmonics effectively and injects high quality power to the grid. The system is simulated using MATLAB and the results demonstrate that the PR based control strategy exhibits an excellent performance in tracking the reference current and in reducing the Total Harmonic Distortion (THD) in the current spectrum compared to the PI based control strategy.
关键词： PI controller,Grid connected PV system,PR controller,Phase Locked Loop (PLL)
更新于2025-09-04 15:30:14