Control system for the switched reluctance drive of a flywheel energy‐storage module

Vázquez, Cristina; Lafoz, Marcos; Ugena, D.; García-Tabarés, L.

doi:10.1002/etep.141

Cited by 9 publications

(5 citation statements)

References 16 publications

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“…A SMES is a device which stores electric energy by dc current flowing through a superconducting coil which creates a strong magnetic field. SMES is more advantageous in comparison to other energy storage systems as demonstrated in Table …”

Section: System Modelingmentioning

confidence: 99%

“…SMES is more advantageous in comparison to other energy storage systems as demonstrated in Table 1. 21,[25][26][27][28][29] This system consists of (1) power transformer, (2) voltage source converter (VSC), (3) DC link capacitor, (4) DC-DC chopper, (5) superconducting coil, and (6) bypass switch. Bypass switch reduces energy losses when the coil is on standby and protects the coil when the converter fail to service, cooling system, and main power supply is lost.…”

Section: Smes Modelmentioning

confidence: 99%

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A new controlled superconducting magnetic energy storage for dynamic stabilization of distributed generation in islanding mode of operation

Asadi

Meyar‐Naimi

Jahangiri

2017

Int Trans Electr Energ Syst

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Summary According to IEEE std. 1547, islanding mode is “a condition in which a portion of an Electric Power System (EPS) is energized solely by one or more local EPSs through the associated Point of Common Coupling (PCC) while that portion is electrically separated from the rest of the area EPS”. Therefore, the dynamic instability due to islanding may result in power swing and finally loss of synchronism. Hence, many studies have been done for islanding detection and disconnection of distributed generation (DG) in an EPS. But, these conventional methods eventually lead to the disconnection of the DG units. To improve DG dynamic stability, superconducting magnetic energy storage (SMES) can be used effectively, because SMES have a high‐energy density and fast response. This paper proposes a new method to damp the power swing after DG islanding and to maintain synchronism conditions based on SMES. Hence, the disconnection of the DG units is not required. Also, new controllers are developed for SMES including voltage source converter (VSC), and DC‐DC chopper. The controller structures of VSC and DC‐DC chopper are of PI and fuzzy logic‐based type, respectively. Superconducting coil charging is controlled by the DC‐DC chopper. SMES sizing is performed, based on power swing equations. Hereupon, dynamic load model is considered. Performance of the proposed method is evaluated by defining 12 scenarios such as strong and weak networks with load changing simulated in PSCAD. Simulation results show that the islanded DG stabilization (IDGS) method has good performance to maintain stability margin in a weak network.

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Section: System Modelingmentioning

confidence: 99%

Section: Smes Modelmentioning

confidence: 99%

A new controlled superconducting magnetic energy storage for dynamic stabilization of distributed generation in islanding mode of operation

Asadi

Meyar‐Naimi

Jahangiri

2017

Int Trans Electr Energ Syst

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“…Among the different generator types that could be selected, a switched reluctance linear generator (SRLG) is being used, providing a certain amount of advantages in wave energy generation, such as robustness, low cost and the possibility to escalate the force and maximum stroke [10] [11]. Direct-drive also ensures the possibility of a high performance control for the generator, avoiding the inertia and delays given by hydraulic and pneumatic systems.…”

Section: A the Point Absorbermentioning

confidence: 99%

Laboratory tests before sea trials of a wave energy converter

Lafoz

Blanco

Navarro

et al. 2015

2015 IEEE International Conference on Industrial Technology (ICIT)

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The paper analyses the actions needed to be taken before the sea trials of a wave energy converter. In particular, the mechanical and electrical tests of the complete Power Take-Off are described, mainly these tests related toh the electric linear generator, the power electronics and its control. This work is developed in the frame of an application project consisting of sea trials of a Wave Energy Converter, carried out between the industry and some research centers. The paper describes the technologies involved in the project, including design and fabrication issues. After some successful tests to ensure the proper operation of the full scale equipment at the lab, it would be ready to be placed inside a point absorber and, after some final verification, to be deployed at sea site within a few months, thereby reducing the unnecessary risks.

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“…Ultracapacitors have been demonstrated for use in stationary applications [2], and are also used in a number of mobile light-rail applications. Flywheel storage is also deployed in mobile and stationary railway applications [3]. The follow sections briefly review the main types of energy storage for use in railway applications.…”

Section: Portable Energy Storage Devicesmentioning

confidence: 99%

Analysis of energy storage devices in hybrid railway vehicles

Lu¹,

Meegahawatte²,

Guo³

et al. 2008

IET International Conference on Railway Engineering 2008 (ICRE 2008)

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This paper presents an analysis of the energy storage requirements for hybrid railway vehicles. Autonomous hybrid railway vehicles combine two power sources. The conventional diesel primemover is supplemented with power derived from an on-board energy storage device. The device is discharged during high power demand, and may be recharged through regenerative braking. The energy savings that are achievable through the adoption of such technology are also dependent on the duty cycle. It is shown that for a given vehicle there is a inter-station distance beyond which the benefits become marginal.The performance of the energy storage device fundamentally affects the whole system performance and careful consideration is required in device selection. The constrained nature of the railway system also presents opportunities for optimization of architectures and control strategies. These methods are also discussed in this paper. Finally, a review of practical implementation considerations is presented. Hybrid railway vehiclesThe principle of a hybrid propulsion system is to use more than one power source for vehicle propulsion. Choices of hybrid architecture and system configuration depend on the vehicle duty cycle, and also depend on issues such as whole life cycle costs and maintainability. For systems with two power sources, the prime mover is usually an internal combustion engine, and this is supported by another power source, such as a battery system during periods of high power demand. The path of power * Corresponding author, +44 (0)121 414 4289 s.hillmansen@bham.ac.uk from prime mover to the wheels of the vehicle also have many technically feasible options. Railway vehicles have a number of systems in use currently, including diesel electric transmission which is common in many locomotives, and increasingly a feasible option for multiple units. In principle, only minor propulsion system modifications are required to convert an existing electric transmission system into one which can accommodate electrical energy storage between the traction drives and the prime mover.Energy savings from a system containing energy storage can be realized through the downsizing and optimization of the prime mover, and through the capture and release of braking energy. Railway operations also have further potential options for energy savings by optimizing the driving style to maximize the use of regenerated energy, and by careful management of the energy storage device.The selection of an energy storage medium is a complex process, and devices may have fundamentally different characteristics, meaning the resulting final systems differ considerably. Electric storage medium include supercapacitors, batteries, and magnetic field storage. Each of these technologies have different operating constraints and will potentially each have niche applications. Mechanical storage includes compressed storage systems, and flywheel systems. This paper presents a broad analysis of hybrid railway vehicle configurations as shown in figure 1, wi...

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Control system for the switched reluctance drive of a flywheel energy‐storage module

Cited by 9 publications

References 16 publications

A new controlled superconducting magnetic energy storage for dynamic stabilization of distributed generation in islanding mode of operation

A new controlled superconducting magnetic energy storage for dynamic stabilization of distributed generation in islanding mode of operation

Laboratory tests before sea trials of a wave energy converter

Analysis of energy storage devices in hybrid railway vehicles

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