Fd_.rar - Marketing residential grid-connected PV
systems using a Balanced Scorecard as a
marketing tool,2012-02-09 16:52:40,下载2次
Fc__.rar - THE GERMAN EXPERIENCE WITH GRID-CONNECTED PV-SYSTEMS,2012-02-09 16:51:44,下载2次
Fb__.rar - Modeling and simulation of a grid-connected PV generation system for electromagnetic transient analysis,2012-02-09 16:50:31,下载18次
Fa_.rar - Five-level inverter with dual reference modulation technique for grid-connected PV system,2012-02-09 16:48:40,下载34次
F__.rar - System performance of a three-phase PV-grid-connected system
installed in Thailand: Data monitored analysis,2012-02-09 16:46:38,下载5次
F5.rar - Design of grid connected PV systems considering
electrical, economical and environmental aspects:
A practical case,2012-02-09 16:44:07,下载11次
30.rar - The present work provides the results of a study on the optimization of PV wind system to meet a certain load distribution demand in the city of Bechar (Algeria). The method is applied to the satisfaction of a domestic load demand,2010-07-22 18:15:32,下载108次
46.rar - The purpose of methodology is to suggest a list of commercially available system devices, the optimal number and type of units ensuring that the 25-year round total system cost is minimized subject to the constraint that the load energy requirements are completely covered. The 25- year round total system cost is equal to the sum of the respective components capital and maintenance costs. The decision variables included in the optimization process are,2010-07-22 18:14:27,下载1次
58.rar - We propose the optimum configurations for PV wind generating systems in residences using hourly data over a year. We assume that a residence is one house consuming average electrical energy in south of Algeria (Sahara area). Genetic algorithm (GA) is used as an optimization method in this paper. The purpose of this study is to minimize the objective function of GA. The objective function is the total cost of PV wind system.,2010-07-22 18:14:01,下载97次
37.rar - When the gate-emitter capacitance is fully charged the collector current ID has
reached the same value as the external circuit. The gate-emitter voltage, (VGE),
will then remain constant because no current changes will now occur. The
gate-collector capacitance (CGC) will at this time begin the same procedure as
CGE and get charged of the gate current. During this phase the so called Miller
plateau occurs, the flat part in Figure 2.3.,2010-07-20 23:15:45,下载2次
25.rar - The understanding of the switching procedure of an IGBT requires a more
detailed description. It is very similar to a MOSFET. The main difference occurs
at turn-off when a current tail appears, see Figure 2.2 [5]. When turning on, a
positive voltage is applied on the gate circuit (VGE), which results in a constant,2010-07-20 23:11:45,下载4次
9.rar - but the most accurate values can be read in the graph of how the capacitances
vary. A graph of this type is also often found in the data sheets [7]. The value of
CGC has the largest change and decreases with increasing voltage. Another and
probably better way to calculate the gate circuit properties is to use the gate
charge specifications available in data sheets [2]. This will be discussed more in
section 2.2.2,2010-07-20 23:11:39,下载3次
datasheet_5.rar - IGBTs were first introduced as a combination of the bipolar junction transistor
(BJT) and the metal oxide semiconductor field effect transistor (MOSFET)
technology. The IGBT is to prefer in medium high voltage segments (600-
3000V) rather than theMOSFET because it proved to have several good features
like ruggedness and operation at higher frequencies [1, ch. 1.9]. The construction
of the IGBT combines the low conduction losses of a BJT with the advantage
of the short switching times of the MOSFET.,2010-07-20 23:03:10,下载26次
datasheet_8.rar - In the first generation of the vehicle two diesel engines will provide energy to a
generator transforming it to 700V on a DC bus. The DC bus provides enough
energy for both propulsion and the auxiliary equipment. The now existing
prototypes are, to a large extent, equipped with hydraulic systems for energy
conversion. It is desirable to replace the hydraulic system with an electrical one.
As a part of the development this master thesis will evaluate a prototype of an
inverter for the cooling fan motor.,2010-07-20 22:48:20,下载41次
datasheet_4.rar - The most critical problem to solve is how to design and tune the power electronic
components in the inverter to cooperate in the best manner possible. How can
voltage transients, oscillations and losses be reduced to a minimum? Could this
be done with help of snubber circuits?,2010-07-20 22:34:48,下载5次
datasheet_3.rar - The most critical problem to solve is how to design and tune the power electronic
components in the inverter to cooperate in the best manner possible. How can
voltage transients, oscillations and losses be reduced to a minimum? Could this
be done with help of snubber circuits?,2010-07-20 22:33:44,下载1次
datasheet_2.rar - As shown in (5), the inductor current oscillates around
a
dc value at twice the grid frequency. The PWM
technique assumes a constant dc input current and thus,,2010-07-20 22:31:10,下载3次
PV_System.rar - To keep overall output power per
unit cost low, the grid-connected converters should be
able to extract the maximum available power from the
PV arrays. Since the PV array characteristic is highly
nonlinear, maximum power point tracking (MPPT) of
the PV arrays becomes rather challenging.,2010-07-20 21:06:47,下载505次
PVSF.rar - At this moment, the major
obstacle of wide PV system commercialization is the
high initial investment cost that stems from the strict
grid connection standards and high expectations from
the PV system [2], [3]. The grid-connected PV system
consists of two parts: PV arrays that convert irradiation
to electrical energy, and the converter that feeds the
energy into the grid.,2010-07-20 21:05:45,下载91次
c38_2.rar - The solar energy received in one day is equivalent to
more than ten times the anual energy consumption of
everyone on earth. This revelation along with the
worldwide trend of green energy, has led to an
exponential growth of the number of Photovoltaic (PV)
system installations [1].,2010-07-20 21:03:09,下载38次
shallowroot-TRS.rar - The exponential growth in the number of Photovoltaic
(PV) system installations verifies that solar power
technology has become one of the promising energy
resources. This paper introduces new control scheme
and converter topology for low to medium power PV
applications. Proposed topology provides independent
MPPT and power decoupling without the use of bulky
electrolytic capacitors.,2010-07-20 20:59:50,下载110次
2007413151619_2.rar - unit should be promoted in future work. The real implementation of the system is an
issue that has been mentioned and should be analyzed while the simulation procedure
exalts. Other simulation programs such as PSpice should be used to compare their
results. The inverters need to develop in order to be more efficient and up to date, to,2010-07-19 19:35:50,下载5次
SEB10-programme.rar - The PV array has been simulated at one year period and other code sources are
been discussed. In order to extract the voltage deviation from the array, we intent to
apply the formula of the MPP to these codes. Our approach, considering the hole
system, has not been totally implemented in Simulink. The grid utility and the control,2010-07-19 19:31:52,下载71次
2007413151619.rar - system has been virtually created in order to actualize the conversion from DC to AC.
The basic components of this are a stabilizer a 6 IGBTs 3 arm bridge, and a Filter LC
and a 10KW load. At third, the control circuit, is discussed and has been designed in
Simulink, results to sinusoidal characteristics which are a priory defined. The main,2010-07-19 19:20:45,下载25次
pll2nd.rar - A typical example of using the dSPACE system for
electrical drives simulations is described in [9] and for wind
energy conversion systems (WECS) in [10].
However, before the real-time implementation, the
Control part has to be validated by simulation using a plant
model. This model could be developed using either the
Simulink transfer functions or the PLECS toolbox.,2010-07-16 00:58:11,下载71次
b21.rar - Taking into account all the parameters mentioned, forming the appropriate programming to the controller in order to achieve the synchronization between the two systems, the appropriate amplitude and as well as the power management to the DC to control the power that is injected to the electrical grid, the results we take are in the range of high performance inverters. In this simulation scenario the power is high as the current has been increased and the THD is low ,2010-07-16 00:12:16,下载36次