Щоб переглянути інші типи публікацій з цієї теми, перейдіть за посиланням: Diode-rectifier based HVDC.

Статті в журналах з теми "Diode-rectifier based HVDC"

Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями

Оберіть тип джерела:

Ознайомтеся з топ-38 статей у журналах для дослідження на тему "Diode-rectifier based HVDC".

Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.

Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.

Переглядайте статті в журналах для різних дисциплін та оформлюйте правильно вашу бібліографію.

1

Bidadfar, Ali, Oscar Saborío-Romano, Jayachandra Naidu Sakamuri, Vladislav Akhmatov, Nicolaos Antonio Cutululis, and Poul Ejnar Sørensen. "Coordinated Control of HVDC and HVAC Power Transmission Systems Integrating a Large Offshore Wind Farm." Energies 12, no. 18 (2019): 3435. http://dx.doi.org/10.3390/en12183435.

Повний текст джерела
Анотація:
The development of efficient and reliable offshore electrical transmission infrastructure is a key factor in the proliferation of offshore wind farms (OWFs). Traditionally, high-voltage AC (HVAC) transmission has been used for OWFs. Recently, voltage-source-converter-based (VSC-based) high-voltage DC (VSC-HVDC) transmission technologies have also been considered due to their grid-forming capabilities. Diode-rectifier-based (DR-based) HVDC (DR-HVDC) transmission is also getting attention due to its increased reliability and reduced offshore platform footprint. Parallel operation of transmission
Стилі APA, Harvard, Vancouver, ISO та ін.
2

Zhou, Shijia, Fei Rong, Zhangtao Yin, Shoudao Huang, and Yuebin Zhou. "HVDC Transmission Technology of Wind Power System with Multi-Phase PMSG." Energies 11, no. 12 (2018): 3294. http://dx.doi.org/10.3390/en11123294.

Повний текст джерела
Анотація:
The high voltage DC (HVDC) transmission technology of wind power system, with multi-phase permanent magnetic synchronous generator (PMSG) is proposed in this paper. Each set of three-phase winding of the multi-phase PMSG was connected to a diode rectifier. The output of the diode rectifier was connected by several parallel isolated DC–DC converters. Each DC–DC converter was connected to a sub-module (SM). All SMs and two inductors were connected in a series. The proposed wind power system has several advantages including, transformerless operation, low cost, low voltage stress, and high fault
Стилі APA, Harvard, Vancouver, ISO та ін.
3

Herrera, Danilo, Thiago Tricarico, Diego Oliveira, Mauricio Aredes, Eduardo Galván-Díez, and Juan M. Carrasco. "Advanced Local Grid Control System for Offshore Wind Turbines with the Diode-Based Rectifier HVDC Link Implemented in a True Scalable Test Bench." Energies 15, no. 16 (2022): 5826. http://dx.doi.org/10.3390/en15165826.

Повний текст джерела
Анотація:
Diode-based HVDC link technology is considered an alternative to reduce the cost and complexity of offshore HVDC platforms. When this technology is used, the AC grid of the wind farm must be created artificially. This paper proposes an advanced frequency control method that permits forming an AC grid voltage system to connect offshore wind turbines to a diode-based HVDC link rectifier. The proposed algorithm can be easily implemented in the wind farm’s overall Power Plant Controller (PPC) without any change in the commercial wind turbine firmware. All wind turbines receive reactive power targe
Стилі APA, Harvard, Vancouver, ISO та ін.
4

Nami, Ashkan, Jose Luis Rodriguez-Amenedo, Santiago Arnaltes, Miguel Angel Cardiel-Alvarez, and Roberto Alves Baraciarte. "Frequency Control of Offshore Wind Farm With Diode-Rectifier-based HVdc Connection." IEEE Transactions on Energy Conversion 35, no. 1 (2020): 130–38. http://dx.doi.org/10.1109/tec.2019.2949892.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
5

Bidadfar, Ali, Oscar Saborio-Romano, Nicolaos A. Cutululis, and Poul E. Sorensen. "Control of Offshore Wind Turbines Connected to Diode-Rectifier-Based HVdc Systems." IEEE Transactions on Sustainable Energy 12, no. 1 (2021): 514–23. http://dx.doi.org/10.1109/tste.2020.3008606.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
6

Yu, Lujie, Rui Li, and Lie Xu. "Hierarchical control of offshore wind farm connected by parallel diode‐rectifier‐based HVDC and HVAC links." IET Renewable Power Generation 13, no. 9 (2019): 1493–502. http://dx.doi.org/10.1049/iet-rpg.2019.0033.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
7

Yu, Lujie, Rui Li, and Lie Xu. "Parallel operation of diode-rectifier based HVDC link and HVAC link for offshore wind power transmission." Journal of Engineering 2019, no. 18 (2019): 4713–17. http://dx.doi.org/10.1049/joe.2018.9255.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
8

Tian, Shangen, David Campos-Gaona, Vinícius A. Lacerda, Raymundo E. Torres-Olguin, and Olimpo Anaya-Lara. "Novel Control Approach for a Hybrid Grid-Forming HVDC Offshore Transmission System." Energies 13, no. 7 (2020): 1681. http://dx.doi.org/10.3390/en13071681.

Повний текст джерела
Анотація:
This article describes a hybrid topology of high-voltage direct current (HVDC) for offshore wind farms using a series connection of a voltage source converter (VSC) and six-pulse diode rectifier (6P-DR). In this topology, the offshore side VSC (OF-VSC) acts as a grid-forming converter to maintain the PCC (point of common coupling) voltage of offshore wind farms (WF) and frequency. In addition, the OF-VSC functions as an active power filter to suppress the 5th, 7th, 11th, and 13th order harmonic current components produced by the 6P-DR, making it almost sinusoidal. Due to the 6P-DR being used i
Стилі APA, Harvard, Vancouver, ISO та ін.
9

Zhang, Zheren, Yingjie Tang, and Zheng Xu. "Medium frequency diode rectifier unit based HVDC transmission for offshore wind farm integration." IET Renewable Power Generation 15, no. 4 (2021): 717–30. http://dx.doi.org/10.1049/rpg2.12062.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
10

Chang, Yiran, and Xu Cai. "Hybrid Topology of a Diode-Rectifier-Based HVDC System for Offshore Wind Farms." IEEE Journal of Emerging and Selected Topics in Power Electronics 7, no. 3 (2019): 2116–28. http://dx.doi.org/10.1109/jestpe.2018.2881768.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
11

Flåten, Ida, Gilbert Bergna-Diaz, Santiago Sanchez, and Elisabetta Tedeschi. "Control of HVDC systems based on diode rectifier for offshore wind farm applications." Energy Procedia 137 (October 2017): 406–13. http://dx.doi.org/10.1016/j.egypro.2017.10.365.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
12

Herrmann, Michael, Merlin Alkemper, and Lutz Hofmann. "Analysis of Onshore Synthetic Inertia and Primary Control Reserve Contributions of Alternating Current-Side Meshed Offshore Grids with Voltage-Source Converter and Diode Rectifier Unit High-Voltage Direct Current Connections." Energies 16, no. 18 (2023): 6700. http://dx.doi.org/10.3390/en16186700.

Повний текст джерела
Анотація:
The increasing use of renewable energy sources in place of conventional generation units is leading to a reduction in onshore inertia and to the development of offshore wind park grids connected by multiple high-voltage direct current (HVDC) connections to the onshore alternating current (AC) grid. For AC-side meshed offshore grids with voltage-source converter (VSC) and diode rectifier unit (DRU) HVDC connections towards onshore grids, this study focuses on the energetic feasibility of synthetic inertia (SI) and primary control reserve (PCR) contributions triggered locally at the onshore conv
Стилі APA, Harvard, Vancouver, ISO та ін.
13

Yu, Lujie, Rui Li, and Lie Xu. "Distributed PLL-Based Control of Offshore Wind Turbines Connected With Diode-Rectifier-Based HVDC Systems." IEEE Transactions on Power Delivery 33, no. 3 (2018): 1328–36. http://dx.doi.org/10.1109/tpwrd.2017.2772342.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
14

Yu, Lujie, Rui Li, Lie Xu, and Grain P. Adam. "Analysis and Control of Offshore Wind Farms Connected With Diode Rectifier-Based HVDC System." IEEE Transactions on Power Delivery 35, no. 4 (2020): 2049–59. http://dx.doi.org/10.1109/tpwrd.2019.2960405.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
15

Nami, Ashkan, José Amenedo, Santiago Gómez, and Miguel Álvarez. "Active Power Filtering Embedded in the Frequency Control of an Offshore Wind Farm Connected to a Diode-Rectifier-Based HVDC Link." Energies 11, no. 10 (2018): 2718. http://dx.doi.org/10.3390/en11102718.

Повний текст джерела
Анотація:
This paper presents a novel active power filtering (APF) scheme embedded in a centralised frequency control of an offshore wind farm (OWF) connected to a high voltage direct current link through a diode rectifier station. The APF is carried out by a voltage source converter (VSC), which is connected to the rectifier station to provide frequency control for the offshore ac-grid. The proposed APF scheme eliminates harmonic currents at a capacitor bank placed at the rectifier station. This leads to a significant reduction in the total harmonic distortion of the offshore ac-grid voltage, and thus,
Стилі APA, Harvard, Vancouver, ISO та ін.
16

Xie, Lijun, Fan Cheng, and Jing Wu. "Control Strategy for Offshore Wind Farms with DC Collection System Based on Series-Connected Diode Rectifier." Sustainability 14, no. 13 (2022): 7860. http://dx.doi.org/10.3390/su14137860.

Повний текст джерела
Анотація:
The DR-HVDC (Diode rectifier-based HVDC) transmission topology was recently proposed for integration on large offshore wind farms due to its low investment cost and high reliability. To further reduce the investment, a DC collection topology based on the series-connected diode rectifiers (DR) is proposed, where no offshore platform is needed. However, units of series-connected topology (SCU) show coupling issues, such as overvoltage, energy curtailment, and fault isolation. First, the coupling mechanism is analyzed, and a suitable operation mode for SCUs is selected to ensure the safe operatio
Стилі APA, Harvard, Vancouver, ISO та ін.
17

Li, Rui, Lujie Yu, and Lie Xu. "Offshore AC Fault Protection of Diode Rectifier Unit-Based HVdc System for Wind Energy Transmission." IEEE Transactions on Industrial Electronics 66, no. 7 (2019): 5289–99. http://dx.doi.org/10.1109/tie.2018.2869357.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
18

Zhang, Yiting, Wenjiang Zhu, Cheng Tang, Ni Liu, Sinan Li, and Hong Wang. "Start-Up and Fault-Ride-Through Strategy for Offshore Wind Power via DRU-HVDC Transmission System." Energies 17, no. 19 (2024): 4968. http://dx.doi.org/10.3390/en17194968.

Повний текст джерела
Анотація:
The diode-rectifier unit (DRU)-based high-voltage direct current (HVDC) transmission system offers an economical solution for offshore wind power transmission. However, this approach requires offshore wind farms to establish a strong grid voltage. To meet this requirement while fulfilling the dynamic characteristics of the DRU, this paper proposes an advanced grid-forming (GFM) control strategy for offshore wind turbines connected to DRU-HVDC. The strategy incorporates a P-U controller and a Q-ω controller based on reactive power synchronization. Furthermore, a novel virtual power-based pre-sy
Стилі APA, Harvard, Vancouver, ISO та ін.
19

Yin, Rui, Daozhuo Jiang, Yi Du, Pengfei Hu, and Yiqiao Liang. "A novel control strategy for offshore DFIG-based wind farm integrated through diode-rectifier-based HVDC transmission." International Transactions on Electrical Energy Systems 25, no. 12 (2015): 3553–72. http://dx.doi.org/10.1002/etep.2051.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
20

Yang, Qiluan, Xiaowei Huang, and Huangqing Xiao. "Active frequency support strategy of diode rectifier unit based HVDC transmission system for offshore wind power." IET Conference Proceedings 2024, no. 6 (2025): 1169–75. https://doi.org/10.1049/icp.2024.2445.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
21

Martínez-Turégano, Jaime, Antonio Sala, Ramon Blasco-Gimenez, and Carlos Blanes. "Operation of DR–HVdc-Connected Grid-Forming Wind Turbine Converters Using Robust Loop-Shaping Controllers." Applied Sciences 14, no. 2 (2024): 881. http://dx.doi.org/10.3390/app14020881.

Повний текст джерела
Анотація:
Off-shore wind power plants can be connected to the on-shore grid using diode rectifier HVdc links. As diode rectifiers are passive converters, off-shore WPPs require grid-forming capability. This paper shows how to improve the WTG dynamic response and the voltage and current harmonic rejection by using H∞-based controllers. The paper explains how to synthesise three different H∞ voltage controllers: the first is a single-loop H∞ controller, the second is a cascaded H∞ controller and the third is a proportional–resonant controller that is optimised using H∞ synthesis. The three H∞-based contro
Стилі APA, Harvard, Vancouver, ISO та ін.
22

Kumar, Dileep, Wajiha Shireen, and Nanik Ram. "Grid Integration of Offshore Wind Energy: A Review on Fault Ride Through Techniques for MMC-HVDC Systems." Energies 17, no. 21 (2024): 5308. http://dx.doi.org/10.3390/en17215308.

Повний текст джерела
Анотація:
Over the past few decades, wind energy has expanded to become a widespread, clean, and sustainable energy source. However, integrating offshore wind energy with the onshore AC grids presents many stability and control challenges that hinder the reliability and resilience of AC grids, particularly during faults. To address this issue, current grid codes require offshore wind farms (OWFs) to remain connected during and after faults. This requirement is challenging because, depending on the fault location and power flow direction, DC link over- or under-voltage can occur, potentially leading to t
Стилі APA, Harvard, Vancouver, ISO та ін.
23

Zhang, Ganghua, Wang Xiang, Xia Chen, Rui Tu, Xuebo Qiao, and Jinyu Wen. "Grid-forming Control Based on Adaptive Reactive Power Allocation for Offshore Wind Farms Connected to Diode-rectifier-based HVDC System." Journal of Modern Power Systems and Clean Energy 13, no. 1 (2024): 154–66. https://doi.org/10.35833/mpce.2024.00743.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
24

Huang, Kai, Lie Xu, and Guangchen Liu. "A Diode-MMC AC/DC Hub for Connecting Offshore Wind Farm and Offshore Production Platform." Energies 14, no. 13 (2021): 3759. http://dx.doi.org/10.3390/en14133759.

Повний текст джерела
Анотація:
A diode rectifier-modular multilevel converter AC/DC hub (DR-MMC Hub) is proposed to integrate offshore wind power to the onshore DC network and offshore production platforms (e.g., oil/gas and hydrogen production plants) with different DC voltage levels. The DR and MMCs are connected in parallel at the offshore AC collection network to integrate offshore wind power, and in series at the DC terminals of the offshore production platform and the onshore DC network. Compared with conventional parallel-connected DR-MMC HVDC systems, the proposed DR-MMC hub reduces the required MMC converter rating
Стилі APA, Harvard, Vancouver, ISO та ін.
25

Martínez-Turégano, Jaime, Salvador Añó-Villalba, Soledad Bernal-Perez, and Ramon Blasco-Gimenez. "Aggregation of Type-4 Large Wind Farms Based on Admittance Model Order Reduction." Energies 12, no. 9 (2019): 1730. http://dx.doi.org/10.3390/en12091730.

Повний текст джерела
Анотація:
This paper presents an aggregation technique based on the resolution of a multi-objective optimization problem applied to the admittance model of a wind power plant (WPP). The purpose of the presented aggregation technique is to reduce the order of the wind power plant model in order to accelerate WPP simulation while keeping a very similar control performance for both the simplified and the detailed models. The proposed aggregation technique, based on the admittance model order reduction, ensures the same DC gain, the same gain at the operating band frequency, and the same resonant peak frequ
Стилі APA, Harvard, Vancouver, ISO та ін.
26

Bernal-Perez, Soledad, Salvador Ano-Villalba, Ramon Blasco-Gimenez, and Johel Rodriguez-D'Derlee. "Efficiency and Fault Ride-Through Performance of a Diode-Rectifier- and VSC-Inverter-Based HVDC Link for Offshore Wind Farms." IEEE Transactions on Industrial Electronics 60, no. 6 (2013): 2401–9. http://dx.doi.org/10.1109/tie.2012.2222855.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
27

Jin, Yanqiu, Zheren Zhang, and Zheng Xu. "Proportion of Grid-forming Wind Turbines in Hybrid GFM-GFL Offshore Wind Farms Integrated with Diode Rectifier Unit Based HVDC System." Journal of Modern Power Systems and Clean Energy 13, no. 1 (2024): 87–101. https://doi.org/10.35833/mpce.2024.000432.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
28

Herrera, Danilo, Eduardo Galván, and Juan Manuel Carrasco. "Method for controlling voltage and frequency of the local offshore grid responsible for connecting large offshore commercial wind turbines with the rectifier diode-based HVDC-link applied to an external controller." IET Electric Power Applications 11, no. 9 (2017): 1509–16. http://dx.doi.org/10.1049/iet-epa.2017.0172.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
29

Yang, Bo, Bingqiang Liu, Hongyu Zhou, et al. "A critical survey of technologies of large offshore wind farm integration: summary, advances, and perspectives." Protection and Control of Modern Power Systems 7, no. 1 (2022). http://dx.doi.org/10.1186/s41601-022-00239-w.

Повний текст джерела
Анотація:
AbstractOffshore wind farms (OWFs) have received widespread attention for their abundant unexploited wind energy potential and convenient locations conditions. They are rapidly developing towards having large capacity and being located further away from shore. It is thus necessary to explore effective power transmission technologies to connect large OWFs to onshore grids. At present, three types of power transmission technologies have been proposed for large OWF integration. They are: high voltage alternating current (HVAC) transmission, high voltage direct current (HVDC) transmission, and low
Стилі APA, Harvard, Vancouver, ISO та ін.
30

Li, Rui, Lujie Yu, and Lie Xu. "Offshore AC fault protection of diode rectifier unit based HVDC system for wind energy transmission." IEEE Transactions on Industrial Electronics, September 14, 2018. https://doi.org/10.1109/TIE.2018.2869357.

Повний текст джерела
Анотація:
Offshore AC fault protection of wind turbines (WTs) connecting with diode rectifier unit based HVDC (DRU-HVDC) system is investigated in this paper. A voltage-error-dependent fault current injection is proposed to regulate the WT current during offshore AC fault transients and quickly provide fault current for fault detection. Considering different fault locations, the fault characteristics during symmetrical and asymmetrical faults are presented and the requirements for fault detection are addressed. A simple and effective offshore AC fault protection solution, combining both overcurrent prot
Стилі APA, Harvard, Vancouver, ISO та ін.
31

Yu, Lujie, Rui Li, and Lie Xu. "Distributed PLL-based control of offshore wind turbines connected with diode-rectifier based HVDC systems." IEEE Transactions on Power Delivery, November 10, 2017. https://doi.org/10.1109/TPWRD.2017.2772342.

Повний текст джерела
Анотація:
A distributed PLL-based frequency control is proposed in this paper for offshore wind turbine converters connected with diode-rectifier based high-voltage-direct-current (HVDC) systems. The proposed control enables a large number of wind turbines to work autonomously to contribute to the offshore AC frequency and voltage regulation. The proposed control also provides automatic synchronization of the offline wind turbines to the offshore AC grid. Stability of the proposed frequency control is analyzed using root locus method. Moreover, an active dc voltage control of the onshore modular multile
Стилі APA, Harvard, Vancouver, ISO та ін.
32

Yu, Lujie, Ziyu Fu, Rui Li, and Jiebei Zhu. "DRU‐HVDC for offshore wind power transmission: A review." IET Renewable Power Generation, July 18, 2024. http://dx.doi.org/10.1049/rpg2.13045.

Повний текст джерела
Анотація:
AbstractThe rapid development of offshore wind farms (OWFs) calls for economical and reliable power transmission technology. This review paper focuses on the diode‐rectifier‐unit based high voltage direct current (DRU‐HVDC) transmission systems. The main technical features of DRU‐HVDC are highlighted and the comparisons with MMC‐HVDC and LCC‐HVDC are conducted. Considering the uncontrollability of DRU and the necessity of offshore wind turbines (WTs) to establish offshore network, the existing decentralized and centralized control strategies are reviewed in detail. For the fully‐grid‐forming c
Стилі APA, Harvard, Vancouver, ISO та ін.
33

Yu, Lujie, Lie Xu, Jiebei Zhu, and Rui Li. "Impedance Modelling and Stability Analysis of Diode-Rectifier based HVDC Connected Offshore Wind Farms." IEEE Transactions on Power Delivery, 2021, 1. http://dx.doi.org/10.1109/tpwrd.2021.3065572.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
34

Li, Rui, and Lie Xu. "A Unidirectional Hybrid HVDC Transmission System Based on Diode Rectifier and Full-bridge MMC." IEEE Journal of Emerging and Selected Topics in Power Electronics, 2021, 1. http://dx.doi.org/10.1109/jestpe.2020.3015342.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
35

Zhang, Ganghua, Wang Xiang, Xia Chen, and Jinyu Wen. "Capacity Design of Cascaded Diode Rectifier-MMC Based HVDC for Offshore Wind Farm Integration." IEEE Transactions on Power Delivery, 2024, 1–11. http://dx.doi.org/10.1109/tpwrd.2024.3448403.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
36

Martinez-Turegano, Jaime, Ricardo Vidal-Albalate, Salvador Ano-Villalba, Soledad Bernal-Perez, and Ramon Blasco-Gimenez. "Protection Strategies for the Connection of Diode Rectifier-based Wind Power Plants to HVDC Interconnectors." IEEE Journal of Emerging and Selected Topics in Power Electronics, 2020, 1. http://dx.doi.org/10.1109/jestpe.2020.3028780.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
37

Zhang, Zuan, and Xiaowei Zhao. "Startup Control of Grid-Forming Offshore Wind Turbines Connected to the Diode-Rectifier-Based HVDC Link." IEEE Transactions on Sustainable Energy, 2024, 1–12. http://dx.doi.org/10.1109/tste.2024.3454797.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
38

TengMember, BaichuanStudent, Jianjun Ma, and Miao Zhu. "Diode-Rectifier-Based Offshore Platform for Wind Power Collection and HVDC Transmission System: Implementation and Hierarchical Control." IEEE Transactions on Sustainable Energy, 2024, 1–14. http://dx.doi.org/10.1109/tste.2024.3468370.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Ми пропонуємо знижки на всі преміум-плани для авторів, чиї праці увійшли до тематичних добірок літератури. Зв'яжіться з нами, щоб отримати унікальний промокод!