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Indirect Vector Control of Linear Induction Motors Using Space Vector Pulse Width Modulation 被引量:1
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作者 Arjmand Khaliq Syed Abdul Rahman Kashif +5 位作者 Fahad Ahmad Muhammad Anwar Qaisar Shaheen Rizwan Akhtar Muhammad Arif Shah Abdelzahir Abdelmaboud 《Computers, Materials & Continua》 SCIE EI 2023年第3期6263-6287,共25页
Vector control schemes have recently been used to drive linear induction motors(LIM)in high-performance applications.This trend promotes the development of precise and efficient control schemes for individual motors.T... Vector control schemes have recently been used to drive linear induction motors(LIM)in high-performance applications.This trend promotes the development of precise and efficient control schemes for individual motors.This research aims to present a novel framework for speed and thrust force control of LIM using space vector pulse width modulation(SVPWM)inverters.The framework under consideration is developed in four stages.To begin,MATLAB Simulink was used to develop a detailed mathematical and electromechanical dynamicmodel.The research presents a modified SVPWM inverter control scheme.By tuning the proportional-integral(PI)controller with a transfer function,optimized values for the PI controller are derived.All the subsystems mentioned above are integrated to create a robust simulation of the LIM’s precise speed and thrust force control scheme.The reference speed values were chosen to evaluate the performance of the respective system,and the developed system’s response was verified using various data sets.For the low-speed range,a reference value of 10m/s is used,while a reference value of 100 m/s is used for the high-speed range.The speed output response indicates that themotor reached reference speed in amatter of seconds,as the delay time is between 8 and 10 s.The maximum amplitude of thrust achieved is less than 400N,demonstrating the controller’s capability to control a high-speed LIM with minimal thrust ripple.Due to the controlled speed range,the developed system is highly recommended for low-speed and high-speed and heavy-duty traction applications. 展开更多
关键词 space vector pulse width modulation linear induction motor proportional-integral controller indirect vector control electromechanical dynamic modeling
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Realization of Space Vector Pulse Width Modulation Method Based on DSP
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作者 HAN Rukun ZHAO Yulin 《Journal of Northeast Agricultural University(English Edition)》 CAS 2008年第3期56-59,共4页
In order to compensate for the deficiency of Sine Pulse Width Modulation(SPWM), on the base of analyzing the principle of space w tot pulse width modulation and being compared with SPWM, the method of solving workin... In order to compensate for the deficiency of Sine Pulse Width Modulation(SPWM), on the base of analyzing the principle of space w tot pulse width modulation and being compared with SPWM, the method of solving working time of adjacent vector and the method of generate space voltage vector were introduced. The experiment to the inverter which consists of IGBT proves that SVPWM centrol algorithm can reduce harmonic effectively, it is beneficial to enhancing the utilization rate of voltage source inverter direct current power supply. 展开更多
关键词 space vector pulse width modulation DSP space vector
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ANFIS Based Space Vector Modulation-DTC for Switched Reluctance Motor Drive
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作者 T. Srihari R. Jeyabaharath P. Veena 《Circuits and Systems》 2016年第10期2940-2947,共9页
Direct torque control (DTC) of Switched reluctance motor is known straightforward control structure with similar execution to that of field situated control strategies. In any case, the part of ideal determination of ... Direct torque control (DTC) of Switched reluctance motor is known straightforward control structure with similar execution to that of field situated control strategies. In any case, the part of ideal determination of the voltage space vector is one of the weakest focuses in a routine DTC drive because of adjustable switching frequency and high torque ripple. In this paper, ideal choice of voltage space vectors is accomplished utilizing ANFIS (Adaptive Neuro Fuzzy Inference System) with space vector Modulation. SVM-DTC gives consistent switching frequency and the proposed ANFIS controller’s structure manages the torque and stator flux error signals through the fuzzy deduction to get a yield that takes the type of space voltage vector. Simulation results accept the proposed evolutionary system with quick torque and flux reaction with minimized torque ripple and flux ripple. 展开更多
关键词 ANFIS Direct Torque Control Flux Control space Vector modulation Switched Reluctance Motor
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MULTIPLIERS AND TENSOR PRODUCTS OF WEIGHTED L^p-SPACES 被引量:3
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作者 S. Ozto Istanbul University Faculty of Sciences Department of Mathematics Vezneciler, Istanbul Turkey. E-mail: serapoztop@hotmail.com A. T. Gurkanli Ondokuz Mayis University Faculty of Arts and Sciences Department of Mathematics 55139, Kurupelit, Samsun T 《Acta Mathematica Scientia》 SCIE CSCD 2001年第1期41-49,共9页
Let G be a locally compact unimodular group with Haar measure rmdx and ω be the Beurling's weight function on G (Reiter, [10]). In this paper the authors define a space Aωp,q (G) and prove that Aωp,q (G) is a t... Let G be a locally compact unimodular group with Haar measure rmdx and ω be the Beurling's weight function on G (Reiter, [10]). In this paper the authors define a space Aωp,q (G) and prove that Aωp,q (G) is a translation invariant Banach space. Fur- thermore the authors discuss inclusion properties and show that if G is a locally compact abelian group then Aωp,q (G) admits an approximate identity bounded in Lω1 (G). It is also proved that the space Lωp (G) Lω1 Lωq (G) is isometrically isomorphic to the space Aωp,q (G) and the space of multipliers from Lωp (G) to Lq-1, (G) is isometrically isomorphic to the dual of the space Aωp,q (G) iff G satisfies a property Ppq. At the end of this work it is showed that if G is a locally compact abelian group then the space of all multipliers from Lω1 (G) to Aωp,q (G) is the space Aωp,q (G). 展开更多
关键词 Banach module. weighted Lp(G) spaces MULTIPLIER
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Improved VSVPWM Modulation Method for Three-level NPC Inverter in Rural Power Grid
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作者 Li Ran Fang Jun-long +1 位作者 Wang Jun-fu Wang Guang-ya 《Journal of Northeast Agricultural University(English Edition)》 CAS 2021年第1期90-96,共7页
With the acceleration of agricultural electrification,a lot of nonlinear and shock loads appear in the rural power grid,and the resulting harmonic and reactive currents pollute the rural power grid more and more serio... With the acceleration of agricultural electrification,a lot of nonlinear and shock loads appear in the rural power grid,and the resulting harmonic and reactive currents pollute the rural power grid more and more seriously.To solve the above problem,three-level neutral point clamped(NPC)inverters have been widely used,but their development is greatly restricted by the defect of neutral point voltage imbalance.In this paper,an improved virtual space vector pulse width modulation(VSVPWM)was proposed.Firstly,the mathematical models of various space vectors were established,and the influence of various space vectors on neutral point voltage was analyzed.The sum of the vector current at the neutral point was zero and the voltage control at the neutral point was completed by.introducing the time offset into different switching times of the redundant small vector.This method was simple in design and avoided the redundant calculation of the traditional VSVPWM method and tedious switch sequence design.This balancing control strategy could greatly reduce the influence of virtual vectors on neutral point voltage and effectively control the low-frequency oscillation of neutral point voltage.The validity of the method was verified by establishing a matlab simulation model. 展开更多
关键词 rural power grid virtual space vector pulse width modulation neutral point clamped inverter neutral point voltage
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Harmonic Domain Modelling of Space Vector Based STATCOM
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作者 Devendra Manikrao Holey Vinod Kumar Chandrakar 《Energy and Power Engineering》 2016年第4期195-203,共9页
This paper presents frequency domain method for harmonic analysis of space vector based STATCOM. Space Vector Pulse Width Modulation (SVPWM) method is an advanced PWM method. It is a best method among all the PWM tech... This paper presents frequency domain method for harmonic analysis of space vector based STATCOM. Space Vector Pulse Width Modulation (SVPWM) method is an advanced PWM method. It is a best method among all the PWM techniques. It provides a freedom in a switching cycle for placement space vector. In this paper, the SVPWM is used for switching of STATCOM. The harmonic (or frequency) domain is a steady-state form of harmonic analysis method, which represents converters to their harmonic spectra. This paper presents harmonic analysis by means of harmonic domain for space vector based Static shunt converter (STATCOM). Performance of the STATCOM is evaluated in harmonic domain simulation studies in MATLAB environment. 展开更多
关键词 Harmonic Domain Voltage Source Converter (VSC) space Vector modulation (SVM) Static Shunt Compensator (STATCOM)
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Dynamic Harmonic Domain Modelling of Space Vector Based SSSC
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作者 Devendra M. Holey Vinod Kumar Chandrakar 《Energy and Power Engineering》 2016年第3期152-160,共9页
This paper presents analytical frequency domain method for harmonic modeling and evaluation of Space Vector Pulse Width Modulation (SVPWM) based static synchronous series converter (SSSC). SVPWM is the best among all ... This paper presents analytical frequency domain method for harmonic modeling and evaluation of Space Vector Pulse Width Modulation (SVPWM) based static synchronous series converter (SSSC). SVPWM is the best among all the PWM techniques. It gives a degree of freedom of space vector placement in a switching cycle. Dynamic modeling technique is used for space vector modulation (SVM) based voltage source converter that is adapted as a static synchronous series converter (SSSC) for harmonic analysis using dynamic harmonic domain. Performance of the SSSC is evaluated in dynamic harmonic domain simulation studies in MATLAB environment. The switching function spectra are necessary for harmonic transfer matrix which is calculated using Fourier series. This paper presents the analysis of harmonics for space vector based SSSC during steady state and dynamic condition. 展开更多
关键词 Dynamics Harmonic Domain Voltage Source Converter (VSC) space Vector modulation (SVM) Static Synchronus Series Compensator (SSSC)
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An Improved Hybrid Space Vector PWM Technique for IM Drives
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作者 P. Muthukumar P. Melba Mary S. Jeevananthan 《Circuits and Systems》 2016年第9期2120-2131,共13页
In this paper, an improved hybrid space vector pulse width modulation (HSVPWM) technique is proposed for IM (induction motor) drives. The basic principle involved in the proposed random pulse width modulation (RPWM) c... In this paper, an improved hybrid space vector pulse width modulation (HSVPWM) technique is proposed for IM (induction motor) drives. The basic principle involved in the proposed random pulse width modulation (RPWM) cuddled SVPWM is amalgamating the pre-calculated switching timings for various sections of hexagonal space vector boundary and the random selection of carrier between two triangular signals, in order to disband acoustic switching noise spectrum with improved fundamental component. The arbitrary selection between triangular carriers, which is decided by digital signal states (Low or High) of the linear feedback shift register (LFSR) based pseudo random binary sequence (PRBS) generator. The SVPWM offers a control degree of freedom in terms of positioning of vectors inside every sampling interval and hence it has six possible variants of the voltage vectors arrangements in each sector. The developed HSVPWM is thoroughly analyzed in using the MATLAB? based simulation for all SVPWM variants. From the simulation and experimental results viz. harmonic spectrum, harmonic spread factor (HSF), total harmonic distortion (THD) etc., and the superiority of the proposed scheme such as better utilization of DC bus and the randomization of the harmonic power are evidenced. For the practical implementation, Xilinx XC3S500E FPGA device has been used. 展开更多
关键词 Harmonic Spread Factor Hybrid space Vector Pulse Width modulation Pseudo Random Binary Sequence Random Pulse Width modulation
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THD Reduction for Permanent Magnet Synchronous Motor Using Simulated Annealing
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作者 R.Senthil Rama C.R.Edwin Selva Rex +1 位作者 N.Herald Anantha Rufus J.Annrose 《Intelligent Automation & Soft Computing》 SCIE 2023年第2期2325-2336,共12页
Any nonlinear behavior of the system is analyzed by a useful way of Total Harmonic Distortion(THD)technique.Reduced THD achieves lower peak current,higher efficiency and longer equipment life span.Simulated annealing(S... Any nonlinear behavior of the system is analyzed by a useful way of Total Harmonic Distortion(THD)technique.Reduced THD achieves lower peak current,higher efficiency and longer equipment life span.Simulated annealing(SA)is applied due to the effectiveness of locating solutions that are close to ideal and to challenge large-scale combinatorial optimization for Permanent Magnet Synchronous Machine(PMSM).The parameters of direct torque controllers(DTC)for the drive are automatically adjusted by the optimization algorithm.Advantages of the PI-Fuzzy-SA algorithm are retained when used together.It also improves the rate of system convergence.Speed response improvement and har-monic reduction is achieved with SA-based DTC for PMSM.This mechanism is known to be faster than other algorithms.Also,it is observed that as compared to other algorithms,the projected algorithm yields a reduced total harmonic distor-tion.As a result of the employment of Space Vector Modulation(SVM)techni-que,the system is resistant to changes in motor specifications and load torque.Through MATLAB&Simulink simulation,the experiment is done and the per-formance is calculated for the controller. 展开更多
关键词 PMSM simulated annealing space vector modulation direct torque control THD
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Modulation space estimates for the fractional integral operators 被引量:3
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作者 ZHONG Yong CHEN JieCheng 《Science China Mathematics》 SCIE 2011年第7期1479-1489,共11页
We obtain the boundedness for the fractional integral operators from the modulation Hardy space μp,q to the modulation Hardy space μr,q for all 0 < p < ∞. The result is an extension of the known result for th... We obtain the boundedness for the fractional integral operators from the modulation Hardy space μp,q to the modulation Hardy space μr,q for all 0 < p < ∞. The result is an extension of the known result for the case 1 < p < ∞ and it contains a larger range of r than those in the classical result of the Lp → Lr boundedness in the Lebesgue spaces. We also obtain some estimates on the modulation spaces for the bilinear fractional operators. 展开更多
关键词 modulation spaces modulation Hardy spaces fractional integral operator bilinear fractional integral operator
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Estimates for wave and Klein-Gordon equations on modulation spaces 被引量:4
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作者 CHEN JieCheng FAN DaShan 《Science China Mathematics》 SCIE 2012年第10期2109-2123,共15页
We prove that the fundamental semi-group e^it(m^2│△│)^1/2 (m≠ 0) of the Klein-Gordon equation is bounded on the modulation space M^8p,q(R^n) for all 0 〈 p, q ≤∞ and s ∈ R. Similarly, we prove that the wa... We prove that the fundamental semi-group e^it(m^2│△│)^1/2 (m≠ 0) of the Klein-Gordon equation is bounded on the modulation space M^8p,q(R^n) for all 0 〈 p, q ≤∞ and s ∈ R. Similarly, we prove that the wave semi-group e^it│△│^1/2 is bounded on the Hardy type modulation spaces μ^εp,q(R^n) for all 0 〈 p, q ≤ ∞, and s ∈R. All the bounds have an asymptotic factor t^n│1/p-1/2│ as t goes to the infinity. These results extend some known results for the case of p ≥ 1. Also, some applications for the Cauchy problems related to the semi-group eit(m^2I+│△│)1/2 are obtained. Finally we discuss the optimum of the factor t^n│1/p-1/2│ and raise some unsolved problems. 展开更多
关键词 Klein-Gordon equation wave equation modulation space
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Sharpness of some properties of weighted modulation spaces 被引量:3
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作者 GUO WeiChao FAN DaShan +1 位作者 WU HuoXiong ZHAO GuoPing 《Science China Mathematics》 SCIE CSCD 2016年第1期169-190,共22页
We obtain some optimal properties on weighted modulation spaces. We find the necessary and sufficient conditions for product inequalities, convolution inequalities and embedding on weighted modulation spaces. Especial... We obtain some optimal properties on weighted modulation spaces. We find the necessary and sufficient conditions for product inequalities, convolution inequalities and embedding on weighted modulation spaces. Especially, we establish the analogue of the sharp Sobolev embedding theorem on weighted modulation spaces. 展开更多
关键词 SHARPNESS product inequalities convolution inequalities EMBEDDING WEIGHTED modulation spaces
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Regenerative Braking Strategy for Motor Hoist by Ultracapacitor 被引量:7
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作者 BIAN Yongming ZHU Lijing +2 位作者 LAN Hao LI Anhu XU Xinming 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2012年第2期377-384,共8页
Rising concern in environmental issues on global scale has made energy saving in powered equipment a very important subject.In order to improve the energy efficiency and driving range of a motor hoist,a regenerative b... Rising concern in environmental issues on global scale has made energy saving in powered equipment a very important subject.In order to improve the energy efficiency and driving range of a motor hoist,a regenerative braking system is designed and discussed.The system takes a unique ultracapacitor-only approach to energy storage system.The bi-directional bride DC?DC converter which regulates current flow to and from the ultracapacitor operates in two modes:boost and buck,depending on the direction of the flow.In order to provide constant input and output current at the ultracapacitor,this system uses a double proportional-integral(PI) control strategy in regulating the duty cycle of PWM to the DC?DC converter.The permanent magnet synchronous motor(PWSM) drive system is also studied.The space vector pulse width modulation(SVPWM) technique,along with a two-closed-loop vector control model,is adopted after detailed analysis of PMSM characteristics.The overall model and control strategy for this regenerative braking system is ultimately built and simulated under the MATLAB and Simulink environment.A test platform is built to obtain experimental results.Analysis of the results reveals that more than half of the gravitational potential energy can be recovered by this system.Simulation and experimentation results testify the validity of the double PI control strategy for interface circuit of ultracapacitor and SVPWM strategy for PMSM. 展开更多
关键词 ULTRACAPACITOR regenerative braking strategy DC/DC converter permanent magnet synchronous motor space vector pulse width modulation
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Non-integer power estimate in modulation spaces and its applications 被引量:1
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作者 CHEN JieCheng HUANG Qiang ZHU XiangRong 《Science China Mathematics》 SCIE CSCD 2017年第8期1443-1460,共18页
We give a method to estimate non-integer power function|u|~ku in modulation space which is an open question in the study of modulation space.As an application,we can study Cauchy problem for the nonlinear Klein-Gordon... We give a method to estimate non-integer power function|u|~ku in modulation space which is an open question in the study of modulation space.As an application,we can study Cauchy problem for the nonlinear Klein-Gordon equation with nonlinear term|u|~ku in modulation space,where k is not an integer.Moreover,we also study the global solution with small initial value for the Klein-Gordon-Hartree equation.The results show some advantages of modulation space both in high and low regularity cases. 展开更多
关键词 modulation space non-integer power function Cauchy problem
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Mapping Properties of Certain Oscillatory Integrals on Modulation Spaces 被引量:1
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作者 Mei Fang CHENG Hui Hui LIU Ai Wen SUN 《Acta Mathematica Sinica,English Series》 SCIE CSCD 2017年第12期1647-1658,共12页
Suppose β1 〉 α1 ≥ 0, β2 〉 α2 ≥ 0 and (k,j) ∈ R^2. In this paper, we mainly investigate the mapping properties of the operator Tα,βf(x,y,z)=∫Q^2f(x-t,y-s,z-t^ks^j)e^-2πit-β1s-β2t^-1-α1s^-1-α2 dtd... Suppose β1 〉 α1 ≥ 0, β2 〉 α2 ≥ 0 and (k,j) ∈ R^2. In this paper, we mainly investigate the mapping properties of the operator Tα,βf(x,y,z)=∫Q^2f(x-t,y-s,z-t^ks^j)e^-2πit-β1s-β2t^-1-α1s^-1-α2 dtds on modulation spaces, where Q^2 = [0, 1] × [0, 1] is the unit square in two dimensions. 展开更多
关键词 modulation space singular integral operator Wiener amalgam space
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Grid-connected inverter for wind power generation system 被引量:1
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作者 杨勇 阮毅 +2 位作者 沈欢庆 汤燕燕 杨影 《Journal of Shanghai University(English Edition)》 CAS 2009年第1期51-56,共6页
In wind power generation system the grid-connected inverter is an important section for energy conversion and transmission, of which the performance has a direct influence on the entire wind power generation system. T... In wind power generation system the grid-connected inverter is an important section for energy conversion and transmission, of which the performance has a direct influence on the entire wind power generation system. The mathematical model of the grid-connected inverter is deduced firstly. Then, the space vector pulse width modulation (SVPWM) is analyzed. The power factor can be controlled close to unity, leading or lagging, which is realized based on H-type current controller and grid voltage vector-oriented control. The control strategy is verified by the simulation and experimental results with a good sinusoidal current, a small harmonic component and a fast dynamic response. 展开更多
关键词 grid-connected inverter space vector pulse width modulation (SVPWM) grid voltage vector-oriented power factor
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An improved SVPWM control algorithm for three-level inverter 被引量:1
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作者 HUANG Xiao-feng WANG Xiao-peng SUN Chun-xia 《Journal of Measurement Science and Instrumentation》 CAS CSCD 2017年第3期277-282,共6页
In the traditional three-level space vector pulse width modulation(SVPWM)algorithm,the sector judgment is computationallycomplex since the sector is divided into triangles and hexagons.In addition,the switching freque... In the traditional three-level space vector pulse width modulation(SVPWM)algorithm,the sector judgment is computationallycomplex since the sector is divided into triangles and hexagons.In addition,the switching frequency is high becausethe seven-segment switching sequence is adopted.For this reason,a new SVPWM control algorithm for three-level inverteris proposed,in which the sector judgment is simplified by dividing the sector into quasi hexagons?and the new four-segmentswitching sequence is adopted to reduce the switching frequency.Simulation results show that the total harmonic distortiongrows down with the switching frequency decreasing,moreover,the algorithm runtime is also decreased. 展开更多
关键词 three-level inverter space vector pulse width modulation (SVPWM) sector determination switching sequence
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Modulation space estimates for damped fractional wave equation 被引量:1
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作者 ZHANG ChunJie ZHANG YuHuai REN FangFang 《Science China Mathematics》 SCIE CSCD 2016年第4期687-696,共10页
Instead of the L^p estimates,we study the modulation space estimates for the solution to the damped wave equation.Decay properties for both the linear and semilinear equations are obtained.The estimates in modulation ... Instead of the L^p estimates,we study the modulation space estimates for the solution to the damped wave equation.Decay properties for both the linear and semilinear equations are obtained.The estimates in modulation space differ in many aspects from those in L^p space. 展开更多
关键词 damped wave equation modulation space decay property
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SVPWM Techniques and Applications in HTS PMSM Machines Control 被引量:5
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作者 Zheng-Guang Wang Jian-Xun Jin +1 位作者 You-Guang Guo Jian-Guo Zhu 《Journal of Electronic Science and Technology of China》 2008年第2期191-197,共7页
This paper introduces the principle of space vector pulse width modulation (SVPWM), and discusses a method for implementing the SVPWM based on MATLAB/SIMULINK, as well as modeling of AC servo system with permanent m... This paper introduces the principle of space vector pulse width modulation (SVPWM), and discusses a method for implementing the SVPWM based on MATLAB/SIMULINK, as well as modeling of AC servo system with permanent magnet synchronous motor (PMSM). Simulation results show that the model is effective, and the method provides a frame of reference for software and hardware designs which can be applied in high temperature superconducting (HTS) flywheel energy storage system (FESS) and linear motor (LM). 展开更多
关键词 Flywheel energy storage system (FESS) linear motor (LM) modeling and simulation permanentmagnet synchronous motor (PMSM) space vector pulsewidth modulation (SVPWM).
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Stability of nonlinear Schrodinger equations on modulation spaces
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作者 Weichao GUO Jiecheng CHEN 《Frontiers of Mathematics in China》 SCIE CSCD 2014年第2期275-301,共27页
We consider the Cauchy problem for a family of SchrSdinger equations with initial data in modulation spaces Mp,1^s. We develop the existence, uniqueness, blowup criterion, stability of regularity, scattering theory, a... We consider the Cauchy problem for a family of SchrSdinger equations with initial data in modulation spaces Mp,1^s. We develop the existence, uniqueness, blowup criterion, stability of regularity, scattering theory, and stability theory. 展开更多
关键词 Schrodinger equation blow-up rate SCATTERING stability theory stability of regularity modulation space
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