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modeling/simulation of combined pem fuel cell
modeling/simulation of combined pem fuel cell

... Distributed Generation (DG) is the use of small-scale power generation technologies located close to the load being served. It includes, for example, photovoltaic systems, fuel cells, natural gas engines, industrial turbines, micro turbines, energy-storage devices, wind turbines, and concentrating s ...
Exam III - Purdue College of Engineering
Exam III - Purdue College of Engineering

... As described in the course syllabus, we must certify that every student who receives a passing grade in this course has satisfied each of the course outcomes. On this exam, you have the opportunity to satisfy outcomes i, ii, and iii. On the chart below, we list the criteria we use for determining wh ...
8000 Series - transmille.net
8000 Series - transmille.net

... In addition to the benefits of the modern design of the 8000 series, using firmware functions additional calculated measurements are possible with the 8000 series, such as High Current shunt measurement, measuring both current and voltage simultaneously to calculate the resistance, as well as multip ...
Power System Reliability: adequacy-long term planning
Power System Reliability: adequacy-long term planning

... regulation, stability and current carrying capacity (thermal capacity) etc. While Surge Impedance Loading (SIL) gives a general idea of the loading capability of the line, it is usual to load the short lines above SIL and long lines lower than SIL (because of the stability limitations). SIL at diffe ...
SPi-OCEF - Fundamentals Ltd
SPi-OCEF - Fundamentals Ltd

Wind-Solar Hybrid Power System  Jin Fei Bachelor’s degree (UAS)
Wind-Solar Hybrid Power System Jin Fei Bachelor’s degree (UAS)

... solar cells. (Wang Junyi 2007, P41) (1) Short-circuit current Isc: at a certain temperature and sunlight intensity, it can output the maximum current. (2) Open circuit voltage Voc: at a certain temperature and sunlight intensity, it can output the maximum voltage. (3) Maximum power point current Im: ...
Conductance G of a resistance R is defined as the reciprocal of R, G
Conductance G of a resistance R is defined as the reciprocal of R, G

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Electronics Aspect - Personal Web Pages

... 3. White-line sensor (Principle): i. The principle of operation is based on difference in the intensity of light reflected from a surface. ii. White surface more light reflected higher intensity higher output voltage. iii. The reverse is true for the black surface and this relation is linear. iv. ...
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Advanced PV System Design and Installation

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MAX477 300MHz High-Speed Op Amp

... slew rate and a low 8mA supply current. CMF amplifiers offer high slew rates while maintaining low supply current, but use the feedback and load resistors as part of the amplifier’s frequency compensation network. In addition, they have only one input with high impedance. The MAX477 has speed and po ...
Slides - Indico
Slides - Indico

... In a control loop it takes a set time (latency) for the measured input to produce a change in the output. This causes the loop to act as a low pass filter with a bandwidth such that it can only correct for changes at a frequency below the loop bandwidth. The open loop gain is the amount an error on ...
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...  A microgrid can be considered as an entirely DG based grid that contains both generators and loads  A microgrid can operate in either grid connected mode or islanded mode  In an islanded mode, the DGs connected to the microgrid supply its loads ...
Methods for detecting ground faults in medium-voltage
Methods for detecting ground faults in medium-voltage

... establishes a stable reference for the SDI. The trending and memory block compares the SDI with the SDI average and memorizes the time and ratio if the SDI is a set threshold above the SDI average. The decision logic uses the results from the trending and memory block to determine the existence of a ...
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... is fro m the central control and the reference signal of the d co mponent is generated by the DC control. For Park’s transformation, the rotational reference frame is created by the PLL using the bus voltage as input. a) Current Control Scheme: This control scheme is almost similar to the current co ...
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CIRCUIT FUNCTION AND BENEFITS

... Chapter 7, Temperature Sensors. Kester, Walt. Sensor Signal Conditioning, Analog Devices, 1999, Chapter 8, ADCs for Signal Conditioning. Looney, Mike. AN-0970 Application Note, RTD Interfacing and Linearization Using an ADuC706x Microcontroller, Analog Devices. MT-022 Tutorial, ADC Architectures III ...
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5B39-02中文资料

Calibration Techniques for Precision Power - Techni-Tool
Calibration Techniques for Precision Power - Techni-Tool

... in the signals that are presented to them. Additional errors are possible with these detector types when the signals that they are measuring are amplitude modulated, as the detectors tend to follow the peak of the modulation envelope. Amplitude modulation is a common characteristic of signals produc ...
Effect of Unified Power Flow Controller on Power System
Effect of Unified Power Flow Controller on Power System

... Physics Department, Federal University of Agriculture, Abeokuta, Nigeria Electric power systems consisting of complex interconnection of various essential components such as generators, transformers, transmission lines, cables etc. are economically very expensive to establish to meet up with the inc ...
SRAM Voltage Stacking - University of California, Santa Cruz
SRAM Voltage Stacking - University of California, Santa Cruz

... to mitigate these problems [4], [7], [11]. Voltage stacking is an alternative method to deliver power to components that are placed in series rather than in parallel. The charge between the layers is recycled, i.e., it passes through multiple components [9]. Thus, for the same power budget, voltage ...
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TSEV01S01C90 SPECIFICATIONS

... Especially line coupled disturbances like surge, burst, HF etc. cannot be removed by the module due to the small board area and low price feature. There is no protection circuit against reverse polarity or over voltage implemented. The module will be designed using capacitors for blocking and ground ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)

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Islanding

Islanding refers to the condition in which a distributed generator (DG) continues to power a location even though electrical grid power from the electric utility is no longer present. Islanding can be dangerous to utility workers, who may not realize that a circuit is still powered, and it may prevent automatic re-connection of devices. For that reason, distributed generators must detect islanding and immediately stop producing power; this is referred to as anti-islanding.The common example of islanding is a grid supply line that has solar panels attached to it. In the case of a blackout, the solar panels will continue to deliver power as long as irradiance is sufficient. In this case, the supply line becomes an ""island"" with power surrounded by a ""sea"" of unpowered lines. For this reason, solar inverters that are designed to supply power to the grid are generally required to have some sort of automatic anti-islanding circuitry in them.In intentional islanding, the generator disconnects from the grid, and forces the distributed generator to power the local circuit. This is often used as a power backup system for buildings that normally sell their excess power to the grid.
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