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An electromagnetic damper (EMD) can overcome these shortcomings because the damping coefficient can be regulated by the power circuit in real-time, and the absorbed energy by the damper can be harvested and stored. The EMD is the key component to realize both the energy harvest and the damping control functions for an energy-harvesting suspension.
A novel energy-harvesting variable/constant damping suspension system with motor based electromagnetic damper is proposed in this paper. The method attempts to make following contributions: The vehicle vibration energy is not only harvested from the suspension system, but also controlled to store in the battery for further usage.
Electro-hydraulic damper for energy harvesting suspension: modeling, prototyping and experimental validation Vibration control of an energy regenerative seat suspension with variable external resistance Development of a control method for an electromagnetic semi-active suspension reclaiming energy with varying charge voltage in steps
The damping values of the energy-harvesting damper at three amplitudes are 1146 N/m, 1150 N/m, 1127 N/m respectively, and the average is 1141 N/m with a 14.1% average error. This is mainly caused by the frictional resistance and viscidity resistance that comes from ball-screw and motor.
The structure of SMA damper is shown in Fig. 8. The nonlinear dynamic equation of Jeffocott rotor is as follows: (2) where m is the mass of the rotor, x is the radial displacement of the flywheel, , c is the damping of the system, e is the eccentricity of the rotor, is the speed of the rotor. is the elastic force of the SMA damper.
The nonlinear dynamic model of an energy storage flywheel rotor with SMA damper is established. A developed multi-scale method is proposed to obtain the natural frequency of the system with high accuracy in strong nonlinear condition, and the nonlinear dynamic characteristics of an energy storage flywheel rotor with SMA damper are analyzed.
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A flywheel energy storage system (FESS) with a permanent magnet bearing (PMB) and a pair of hybrid ceramic ball bearings is developed. A flexibility design is established for the flywheel rotor system. The PMB is located at the top of the flywheel to apply axial attraction force on the flywheel rotor, reduce the load on the bottom rolling bearing, and decrease the …
The energy storage system (ESS) is another significant component for the regenerative active suspension system. There are a few articles that have mentioned or discussed the ESS of a vehicle regenerative suspension system. ... Energy-harvesting variable/constant damping suspension system with motor based electromagnetic damper. …
This paper presents a battery energy storage system (BESS) damper to improve the damping of torsional vibrations when using doubly fed induction generators (DFIGs) for frequency regulation in a ...
For the pumped storage machines started by static frequency converter (SFC), the mathematical model of multi-circuits is established considering actual arrangement of the damper bars based on the ...
Here it acts as a short-term damper to prevent imbalance in the output of the turbines and prevent curtailment of production. S4 Energy''s aim for this pilot project is to demonstrate that the net revenues of wind energy can be …
Semantic Scholar extracted view of "Nonlinear dynamic characteristics and stability analysis of energy storage flywheel rotor with shape memory alloy damper" by Xiao-Huan Li et al. Skip to search form Skip to main content Skip to account menu. Semantic Scholar''s Logo. Search 220,875,044 papers from all fields of science ...
In this paper, the nonlinear dynamic characteristics and stability of an energy storage flywheel rotor with shape memory alloys (SMA) damper are studied.
This paper presents a battery energy storage system (BESS) damper to improve the damping of torsional vibrations when using doubly fed induction generators (DFIGs) for frequency regulation in...
In this paper, the nonlinear dynamic characteristics of an energy storage flywheel rotor with SMA damper are studied in details. Firstly, a new type of SMA constitutive model is proposed based on its hysteresis properties, which avoid the analysis difficulties caused by traditional SMA model (Section 2); secondly, the nonlinear dynamic ...
The strength study of the flywheel is important to the flywheel energy storage. The motor and bearing are the key challenges for the ... By using a small stiffness pivot-jewel bearing and a spring squeeze film damper as the lower support of the flywheel, a simple spin system was designed at a low cost and is suitable for longtime operation. ...
The air-gap eccentricity of motor rotor is a common fault of flywheel energy storage devices. Consequently, this paper takes a high-power energy storage flywheel rotor system as the research object, aiming to thoroughly study the flywheel rotor''s dynamic response characteristics when the induction motor rotor has initial static eccentricity. Firstly, the formula …
Electromagnetic dampers, that are composed of a permanent-magnet DC motor, a ball screw, and a nut, are one of the devices currently being inspected to regenerate …
The traction motor braking energy regeneration has been widely studied [6] and becomes more and more mature [7 ... Fig. 11 compares the acceleration responses of a conventional suspension equipped with an oil damper and an energy-harvesting suspension equipped with an EMD. It can be seen from the Fig (a) that, the ride comfort for energy ...
Belimo fail-safe damper actuators have a comprehensive torque offering from 22 to 1400 in-lb torque with direct-coupled, rotary, or linear travel that can handle many HVAC applications.Fail-safe actuators use brushless DC motor technology controlled by an Application Specific Integrated Circuit (ASIC) to provide stall protection, lower power consumption, higher …
In this paper, the nonlinear dynamic characteristics and stability of an energy storage flywheel rotor with shape memory alloys (SMA) damper are studied. A new type of SMA constitutive model is proposed to express SMA''s hysteresis properties, and the nonlinear dynamic model of an energy storage flywheel rotor with SMA damper is established. A developed multi-scale …
Keywords: Energy storage flywheel; Dynamic analysis; Squeeze film damper; ANSYS analysis -----1. Introduction Compared with other types of energy storing mechanisms, the Energy storage flywheel (ESF) is very attractive because of its outstanding advantages [1-3]. Accurately predicting the dynamic behavior of an ESF is crucial in the design and de-
1 Energy-Harvesting Variable/Constant Damping Suspension System with Motor Based Electromagnetic Damper Shiying Li1,2, Jun Xu 1,2*, Xiaohui Pu1,2, Tao Tao1,2, Haonan Gao1,2, Xuesong Mei1,2 1 State Key Laboratory for Manufacturing Systems Engineering, Xi''an Jiaotong University, Xi''an, Shaanxi 710049, China 2 Shaanxi Key Laboratory of …
Abstract. The flywheel energy storage system (FESS) is a closely coupled electric-magnetic-mechanical multiphysics system. It has complex nonlinear characteristics, which is difficult to be described in conventional models of the permanent magnet synchronous motor (PMSM) and active magnetic bearings (AMB). A novel nonlinear dynamic model is developed …
DOI: 10.1016/S0020-7403(01)00057-1 Corpus ID: 137028955; On the vibration of rotor-bearing system with squeeze film damper in an energy storage flywheel @article{Dai2001OnTV, title={On the vibration of rotor-bearing system with squeeze film damper in an energy storage flywheel}, author={Xingjian Dai and Zupei Shen and Hai Jiao Wei}, journal={International Journal of …
The flywheel energy storage system (FESS) [1] is a complex electromechanical device for storing and transferring mechanical energy to/from a flywheel (FW) rotor by an integrated motor/generator ...
In this section, the nonlinear dynamic characteristics of a cracked energy storage flywheel rotor with SMA damper are studied, and the effect of the cracks on the system''s …
This article specifically focuses on studying the concept and feasibility of an electromagnetic suspension system that is capable of recovering energy, using a damper formed …
This paper presents a battery energy storage system (BESS) damper to improve the damping of torsional vibrations when using doubly fed induction generators (DFIGs) for …
A subcritical or supercritical rotor is often employed to improve the energy storage efficiency of flywheel systems. Consequently, it is necessary to introduce Squeeze film dampers (SFD) in the rotor-bearing system to suppress the lateral vibration of the rotor. Although the dynamic behavior of the rotor-bearing system can be investigated in a timely manner with …
Energy-harvesting suspension is very important to improve the energy efficiency of vehicles, especially for electric vehicles. A novel energy-harvesting variable/constant damping suspension system with motor based electromagnetic damper is proposed in this paper. The method attempts to make following contributions: The vehicle vibration energy is not only …
of hydraulic dampers with constant or variable damping coefficients [3–5]. Despite their different characteristics, hydraulic dampers usually dissipate vibration energy in accordance with the viscosity of the hydraulic oil used. The vibration energy is converted by a damper into acoustic or thermal energy, which is then released into the ...
A passive linear EM damper is essentially a permanent magnet linear motor which is able to produce electrical power from motions. Figure 1-(a) shows a typical configuration of a linear ... absorbed by the EM dampers if the structure is equipped with an EM dampers-energy harvesting (EMDEH) system. ... energy storage elements or be utilized by ...
To suppress the influence of power fluctuation in the DC microgrid system, virtual DC motor (VDM) control is applied to the energy storage converter for improving the stability of the power system. Due to the fixed parameters adopted in the traditional VDM control strategy, the dynamic response of the system cannot be taken into account. Based on the …
Ancillary frequency control schemes (e.g., droop control) are used in wind farms to improve frequency regulation in grids with substantial renewable energy …
This Energy King damper actuator motor is designed for a variety of two-position, spring return, damper applications using a two-wire thermostat control. • Direct Linkage Drive.
The invention discloses a damping method of an automobile energy storage damper, which is characterized by comprising the following steps: the device comprises a vehicle body support …
Their special feature: They are an energy store and a hydroelectric power plant in one. If there is a surplus of power in the grid, the pumped storage power station switches to …
I''m trying to use the conservation of energy principle to determine the impulse force resulting in the cable (at the moving end specifically) as the cable becomes taut, but I''m having trouble accounting for the energy …
EnergyKing Damper Actuator Motor. This Energy King damper actuator motor is designed for a variety of two-position, spring return, damper applications using a two-wire thermostat control. • Direct Linkage Drive • Simple 2-wire Thermostat …
This paper introduces four types of energy harvesting damper systems, including hydrostatic storage, rack-pinion, linear motion, and ball-screw type. A hydrostatic storage damper system …
This review article provides a comprehensive study of the properties, preparation, stability, various methods to improve the stability and application of MR fluids. In addition, the behavior of MRF when used in dampers, batteries, valves, and brakes, leading to increased safety, energy storage, cooling, lubrication, etc. is discussed.
Shen JY, Fabien BC (2002) Optimal control of a flywheel energy storage system with a radial flux hybrid magnetic bearing. Journal of the Franklin Institute 339: 189–210. ... Coupled bending torsional vibrations of viscoelastic rotors with fractional damper. Show details Hide details. Zahra Bayat and more ... Journal of Vibration and Control ...
Li et al. proposed a novel energyharvesting variable/constant damping suspension system with a motor-based electromagnetic damper, which can simultaneously achieve energy recovery and storage as ...
The invention belongs to cushion technique field, a kind of more particularly to automobile energy storage damper, it includes vehicle body support plate, piston rod, generator, air motor, triggering gear, rack, retractable cone tooth, Transmission gear, fluted disc etc., wherein piston mechanism can move up and down after being subject to impact force in cylinder, pressure-air in cylinder ...
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