Description: 基于平均法的buck型DC/DC建模步骤，包括电压模和峰值电流模。增加了误差放大器放大倍数的确定，电源调整率，负载调整率和三种变换器的一阶等效模型-Based on the average of the buck-type DC/DC modeling steps, including the voltage mode and peak current mode. An increase of the error amplifier to determine the magnification, adjust the rate of power supply, load-adjusted factor and three first-order equivalent converter model Platform: |
Size: 16384 |
Author:蔡友 |
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Description: 针对光伏并网发电系统中关健部件—逆变器的结构设计与控制方法研究进行了详细分析
和阐述。从电网、光伏阵列以及用户对逆变器的要求出发, 分析了各种不同的逆变器拓扑结构与控
制方法, 比较其运行效率和控制效果。对于本文提出了一种基于全桥变换器的正弦波逆变电源的整体设计
方案。文章首先对系统设计中将使用到的DC/DC变换器，DC/AC变
换器以及PWM控制技术在理论上进行了深入的研究。并讨论了数字
式PID控制算法的实现和在系统中的应用，还针对这种基于全桥变换
器的正弦波逆变器提出了一种用一个电压闭环来调节两个控制量的
PID算法。
其次，文章设计了基于全桥变换器、全桥逆变器和以DSP为核
心的逆变电源控制电路，详细介绍了各相关电路模块的原理与结构。
在完成电路参数设计以后，通过使用MATLAB/Simulink软件对整个
系统进行了仿真分析。并对系统软件设计的思路与实现方法以及关键
程序的流程进行了介绍。
最后，通过系统的带载实验对整套系统软硬件设计的合理性进行
了验证。实验结果表明，本文设计的逆变电源硬件电路和软件系统是
成功的。
-The paper comes up with a full-package solution to convert solar power
into AC.This solution is based on the design of the full-bridge converter
and the full-bridge inverter.This paper first gives full analysis on the
theories of power switching technology,inverter technology and PWM
technology.And the theory and fulfillment of PID algorithm are
discussed in this paper.Especially for this solution,this paper comes up
with a PID algorithm in which two variables are being controlled in one
close-loop.
Then,this paper gives the procedure to calculate the main circuit
parameters.The design of digital controlling circuit and assistant circuits,
such as MOSFET driving circuit and voltage protection circuit,are
introduced.Based on the parameters worked out,the paper gives the
simulation of whole system in Matlab/Simulink.This paper also
introduces the firmware design based on the DSP（TMS320F2812）.
The last is the verification of whole system including hardware and
software by t Platform: |
Size: 1939456 |
Author:fmx |
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Description: simulink model of dc to dc boost converter. the important thing it is in closed loop using p i controller. it is for study purpose-simulink model of dc to dc boost converter. the important thing it is in closed loop using p i controller. it is for study purpose.. Platform: |
Size: 11264 |
Author:srv |
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Description: 这是一个Matlab实现的PWM型直流变换器的Simulink仿真，变换方式是Buck-Boost变换方式。示例，提供了一个从5伏到25伏电压，的升压变换。-This is a Matlab Simulink simulation of PWM DC-DC converter, and transform the way Buck-Boost transform. Example, from 5 volts to 25 volts, the boost transformation. Platform: |
Size: 188416 |
Author:alex |
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Description: This paper presents digital simulation of ZVS half bridge DC to DC converter with
modified PWM control. The switching losses are reduced by using soft switching.
Conventional and duty cycle shifted PWM DC to DC converters are simulated using
matlab simulink and the results are presented. The principle of operation and the key
features of modified PWM DC to DC converter are also presented. Platform: |
Size: 328704 |
Author:hak |
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Description: DC to DC converter simulation with matlab simulink -DC to DC converter simulation with matlab simulink Platform: |
Size: 10240 |
Author:Mehdi |
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Description: The use of solar energy as a source for pumping water is one of the promising areas in the photovoltaic (PV) application. The energy of photovoltaic pumping systems (PVPS) can be widely improved by employing an MPPT algorithm. This will lead consequently to maximize the electrical motor speed of the system. This paper presents a modified incremental conductance (IncCond) MPPT algorithm with direct control method applied to a standalone PV pumping system. The influence of the algorithm parameters on system behavior is investigated and compared with the traditional (INC) method. The studied system consists of a PV panel, a DC-DC boost converter, and a PMDC motor-pump. The simulation of the system by MATLAB-SIMULINK is carried out. Simulation results found are satisfactory.-The use of solar energy as a source for pumping water is one of the promising areas in the photovoltaic (PV) application. The energy of photovoltaic pumping systems (PVPS) can be widely improved by employing an MPPT algorithm. This will lead consequently to maximize the electrical motor speed of the system. This paper presents a modified incremental conductance (IncCond) MPPT algorithm with direct control method applied to a standalone PV pumping system. The influence of the algorithm parameters on system behavior is investigated and compared with the traditional (INC) method. The studied system consists of a PV panel, a DC-DC boost converter, and a PMDC motor-pump. The simulation of the system by MATLAB-SIMULINK is carried out. Simulation results found are satisfactory. Platform: |
Size: 1029120 |
Author:zakary |
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Description: Two demos illustrate use of SimPowerSystems for modeling a PV array connected to a utility grid.
PVarray_Grid_IncCondReg_det.mdl is a detailed model of a 100-kW array connected to a 25-kV grid via a DC-DC boost converter and a three-phase three-level Voltage Source Converter (VSC). Maximum Power Point Tracking (MPPT) is implemented in the boost converter by means of a Simulink model using the “Incremental Conductance + Integral Regulator” technique.
PVarray_Grid_PandO_avg.mdl is an average model of a 200-kW array connected to a 25-kV grid via two DC-DC boost converters and a single three-phase VSC. The MPPT controller based on the “Perturb and Observe” technique is implemented by means of a MATLAB Function block that generates embeddable C code. Platform: |
Size: 589824 |
Author:Soremekun Nurudeen |
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Description: This paper discusses the impact of using 3-phase and multipules converter circuit commonly found in unity power factor at
input AC mains and regulates output voltage.3-phase thyristor rectifiers have been used in industries for obtaining a variable DC
voltage, but they have a problem of including large lower-order harmonics in the input currents. For high-power applications, a 12-
pulse, 18-pulse and 24-pulse configuration is useful for reducing the harmonics, but it still includes the (np±1) th (n: integer, p: pulse)
harmonics. In this paper present the rectifiers are using the MATLAB/SIMULINK simulation model and several common conditions
will be simulated to compare their harmonic levels. Platform: |
Size: 837632 |
Author:Ashok |
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Description: Mitigation Of Voltage Sag And Current Harmonic Elimination Using Reference Signal Generation Method Based On UPQC.
This paper proposes a reference signal generation method for the UPQC adopted to compensate both current and voltage quality problems of sensitive loads. The shunt converter eliminates current harmonics originating load side and series converter eliminates voltage sag originating the supply side. The developed algorithm for the shunt controller and series controller for reference signal generation is based on Instantaneous Reactive Power Theory and nonlinear adaptive filter (phased-locked loop). The DC link control strategy is based on PI controller. The proposed UPQC mitigates the effects of voltage sag and suppresses the load current harmonics under distorted supply conditions. The proposed system is tested through simulation studies using MATLAB/SIMULINK environment.-Mitigation Of Voltage Sag And Current Harmonic Elimination Using Reference Signal Generation Method Based On UPQC.
This paper proposes a reference signal generation method for the UPQC adopted to compensate both current and voltage quality problems of sensitive loads. The shunt converter eliminates current harmonics originating load side and series converter eliminates voltage sag originating the supply side. The developed algorithm for the shunt controller and series controller for reference signal generation is based on Instantaneous Reactive Power Theory and nonlinear adaptive filter (phased-locked loop). The DC link control strategy is based on PI controller. The proposed UPQC mitigates the effects of voltage sag and suppresses the load current harmonics under distorted supply conditions. The proposed system is tested through simulation studies using MATLAB/SIMULINK environment. Platform: |
Size: 552960 |
Author:khan |
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Description: In this paper, we introduced a new series-shunt type FACTS controller called as distributed power flow controller to
improve and maintain the power quality of an electrical power system. This DPFC method is same as the UPFC used to
compensate the voltage sag and the current swell these are voltage based power quality problems. As compared to UPFC
the common dc link capacitor is removed and three individual single phase converters are used instead of a three phase
series converter. Series referral voltages, branch currents are used in this paper for designing control circuit. The evaluated
values are obtained by using MATLAB/SIMULINK. Platform: |
Size: 4928512 |
Author:ananya |
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Description: The objective is to present a nonlinear approach to design a suitable controller system for the photovoltaic (PV) single-phase grid-connected system. The system structure includes a PV generator, Boost converter, and DC-AC inverter coupled to grid network. A backstepping controller is developed to extract maximum point power tracking (MPPT), to regulate the DC bus voltage, and to generate a sinusoidal current into the grid in phase with grid voltage in order to achieve unity power factor. The stability of the control algorithm is demonstrated by tools of Lyapunov analysis. Simulations show that the proposed controller system completely accomplishes listed aims even under atmospheric conditions variation. Theperformance of the proposed controller has been validated by numerical simulation in MATLAB SIMULINK(The objective is to present a nonlinear approach to design a suitable controller system for the photovoltaic (PV) single-phase grid-connected system. The system structure includes a PV generator, Boost converter, and DC-AC inverter coupled to grid network. A backstepping controller is developed to extract maximum point power tracking (MPPT), to regulate the DC bus voltage, and to generate a sinusoidal current into the grid in phase with grid voltage in order to achieve unity power factor. The stability of the control algorithm is demonstrated by tools of Lyapunov analysis. Simulations show that the proposed controller system completely accomplishes listed aims even under atmospheric conditions variation. Theperformance of the proposed controller has been validated by numerical simulation in MATLAB SIMULINK) Platform: |
Size: 507904 |
Author:zinouzinou |
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