On the Voltage Ripple Reduction Control of the Linear Switched Reluctance Generator for Wave Energy Utilization

Pan, Jianfei; Zou, Yu; Cheung, N.C.; Cao, Guangzhong

doi:10.1109/tpel.2013.2292069

Cited by 66 publications

(29 citation statements)

References 35 publications

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“…In most of the cases, constant speeds or sinusoidal speeds having sinusoidal shapes are common approximations for simulating PMLGs [25][26][27]. The typical range of vertical velocity of wave is 0-2 m/s with a time period from 4 to 6 s [28][29][30]. Therefore, a free oceanic wave neither forced nor dissipated on a flat seabed is presented for analysis of the LG as shown in Figure 7 following the mentioned approximations.…”

Section: Model Of the Oceanic Wavementioning

confidence: 99%

“…The maintenance of tubular PMLG is difficult due to the presence of the coils inside the periphery. It is seen in the recent works [28] that the linear switched reluctance generator (LSRG) has been proposed for high power generation. Excessive leakage flux and complex control circuit of LSRGs are responsible for the degradation of overall efficiency and reliability.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of the Oceanic Wave Dynamics for Generation of Electrical Energy Using a Linear Generator

2016

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Electricity generation from oceanic wave depends on the wave dynamics and the behavior of the ocean. In this paper, a permanent magnet linear generator (PMLG) has been designed and analyzed for oceanic wave energy conversion. The proposed PMLG design is suitable for the point absorber type wave energy device. A mathematical model of ocean wave is presented to observe the output characteristics and performance of the PMLG with the variation of ocean waves. The generated voltage, current, power, applied force, magnetic flux linkage, and force components of the proposed PMLG have been presented for different sea wave conditions. The commercially available software package ANSYS/ANSOFT has been used to simulate the proposed PMLG by the finite element method. The magnetic flux lines, flux density, and field intensity of the proposed PMLG that greatly varies with time are presented for transient analysis. The simulation result shows the excellent features of the PMLG for constant and variable speeds related to wave conditions. These analyses help to select proper PMLG parameters for better utilization of sea wave to maximize output power.

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Section: Model Of the Oceanic Wavementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of the Oceanic Wave Dynamics for Generation of Electrical Energy Using a Linear Generator

2016

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“…A linear switched reluctance motor (LSRM) has the merits of simple construction and easy implementation. Owing to a robust and stable mechanical structure, it is particularly suitable for the operation under long-range applications [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Self-tuning Position Control for the Linear Long-stroke, Compound Switched Reluctance Conveyance Machine

Wang

Zhang

Cheung

et al. 2017

IJPEDS

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This paper proposes a long-stroke linear switched reluctance machine (LSRM) with a primary and a secondary translator for industrial conveyance applications. The secondary one can translate according to the primary one so that linear compound motions can be achieved. Considering the fact that either one translator imposes a time-variant, nonlinear disturbance onto the other, the self-tuning position controllers are implemented for the compound machine and experimental results demonstrate that the absolute steady-state error values can fall into 0.03 mm and 0.05 mm for the secondary and primary translator, respectively. A composite absolute precision of less than 0.6 mm can be achieved under the proposed control strategy. Keyword:Compound motion LSRM Self-tuning control Copyright ©2017 Institute of Advanced Engineering and Science.All rights reserved. Corresponding Author:Li Qiu, Laboratory of Space Collaborative Manipulation Technology, Shenzhen University, Fundamental Building Phase II, Southern Campus of Shenzhen University, 3688 Nanhai Road, Shenzhen University, China. Email: qiuli@szu.edu.cn INTRODUCTIONIn modern manufacturing and assembly industry, electrical or mechanical components or parts rely on conveyance systems to transport them to arrive at proper positionsfor furtherprocessing. For linear transportations, rotary machines with synchronous belts are sometimes involved to realize conveyance systems. Due to wear and aging of the belts and other mechanical parts, the precision of the entire conveyance system is often hard to be guaranteed [1]. The traditional method of rotary machines and belts can be replaced by direct-drive, linear machines, which have the advantages of fast response, high-precision and speed [2]. For linear conveyance systems nowadays, the speed of the moving part should often be kept at specified values for sequenced processing of the components or parts [4]. Two or more transportation tasks can rarely be handled at the same time.If any secondary moving part (or translator) can be embedded onto the linear conveyance system and the moving part makes relative motions according to the primary conveyance one at the same time, then the efficiency ofthe entire components transportationtask can be increased.As shown in Figure 1 the concept of a direct-drive, compound linear conveyance system, the stationary part propels the conveyance track(primary part) along the x axis, and the manipulator is responsible to transport the components to a certain work station along the y direction. The secondary part is embedded onto the conveyance track and it is capable of translationalong the conveyance track. It can be seen that the secondary part can work simultaneously as the conveyance track translates. Thus, the processing time can be reduced with increased component conveyance efficiency. Meanwhile, the entire positioning precision of the linear conveyance system can be improved, if both the conveyance track and the secondary part can work coordinately.

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“…At present, the researches of domestic and foreign scholars on SRG output voltage ripple reduction are mainly as follows: the optimization design on main power circuit and structure parameters of SRG, the control strategy based on current distribution function [5] and the introduction of intelligent control algorithm to design a feedback controller for optimization [6][7][8] . In Document [4] , the output voltage is conducted optimization control through the design of capacitor filter and voltage feedback regulator, but effects of some harsh conditions on SRG output voltage are not taken into account, and the change of power circuit is bound to bring a certain project difficulty for update and promotion of SRG.…”

Section: Introductionmentioning

confidence: 99%

“…In Document [4] , the output voltage is conducted optimization control through the design of capacitor filter and voltage feedback regulator, but effects of some harsh conditions on SRG output voltage are not taken into account, and the change of power circuit is bound to bring a certain project difficulty for update and promotion of SRG. In Document [5] , the method of current distribution function is proposed for linear SRG to solve voltage ripple, which ignores nonlinear characteristic of SRG in a certain degree. In Document [6] , internal mode PI control method is adopted, and it can reduce the output voltage ripple brought by sudden change of speed and load disturbance, but it only regards the output voltage and the phase current as feedback values, not considering effects of other variables on SRG performances, which ignores dynamic characteristics of SRG to some extent.…”

Section: Introductionmentioning

confidence: 99%

Switched Reluctance Generator Output Voltage Ripple Reduction Based on Fuzzy Sliding Mode

Xia¹,

Xia²,

Huang³

et al. 2015

MATEC Web of Conferences

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On the Voltage Ripple Reduction Control of the Linear Switched Reluctance Generator for Wave Energy Utilization

Cited by 66 publications

References 35 publications

Analysis of the Oceanic Wave Dynamics for Generation of Electrical Energy Using a Linear Generator

Analysis of the Oceanic Wave Dynamics for Generation of Electrical Energy Using a Linear Generator

Self-tuning Position Control for the Linear Long-stroke, Compound Switched Reluctance Conveyance Machine

Switched Reluctance Generator Output Voltage Ripple Reduction Based on Fuzzy Sliding Mode

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