- 标题
- 摘要
- 关键词
- 实验方案
- 产品
-
[IEEE 2019 IEEE Conference on Power Electronics and Renewable Energy (CPERE) - Aswan City, Egypt (2019.10.23-2019.10.25)] 2019 IEEE Conference on Power Electronics and Renewable Energy (CPERE) - Virtual inertia impact on the performance of photovoltaic system
摘要： With the enormous stress of energy lack and air pollution, renewable energy sources such as photovoltaic sources become an effective solution to these problems. The penetration of photovoltaic sources into power system has adverse effects on overall moment of inertia and damping, this threatens system stability. To assist the stability, the concept of virtual synchronous generator (VSG) has introduced as an inverter control method to add virtual inertia to the system. This paper demonstrates the effects of adding virtual inertia on the system performance when fed from a photovoltaic source. The effects of changing the system and VSG parameters on the overall performance is also studied to show the appropriate change in each parameter that enhance the performance. The theoretical results that obtained using the MATLAB/SIMULINK are verified experimentally, using a DSP-based laboratory model that fed from a PV source.
关键词： Virtual synchronous generator (VSG),Distributed generator (DG),Photovoltaic (PV)
更新于2025-09-19 17:13:59
-
Photovoltaic Synchronous Generator (PVSG): Architecture and Control Strategy for A Grid-Forming PV Energy System
摘要： Transforming conventional PV energy system from a grid following one to a grid forming is necessary when PV power generation is dominating the generation mix and replacing traditional synchronous generators. Grid forming PV energy system can provide frequency support functionality which is vital for the stability of the power grid. This paper presents a novel AC coupled solution that transforms an existing grid following PV system to a grid forming one without any hardware and software modification of the PV inverter. The resulting system, the Photovoltaic Synchronous Generator (PVSG), is achieved by an AC coupled supercapacitor-based energy storage system (ESS). The novel control of the PVSG is implemented in the ESS side. The novel control scheme includes a fast and slow instantaneous power controls. The fast-instantaneous power flow control is fulfilled by the DC-link voltage control and AC voltage control. The cascaded voltage source controls enable the fast-instantaneous power balance, while a slow instantaneous power control is used to implement the inertia and grid synchronization. Two important fundamental functions are realized in the PVSG. The first one is the frequency inertia to resist the grid frequency variation where the df/dt-based power control is achieved; the second one is the inertia against the PV intermittent power. The correctness and effectiveness of the proposed PVSG is validated experimentally in a 480V PVSG prototype with TMS320F28379D DSP controller.
关键词： current controlled,power control,PVSG,virtual synchronous generator (VSG),Inertia,voltage controlled,grid-forming inverter,supercapacitors,energy storage system,inverter control
更新于2025-09-16 10:30:52