sensorless digital control of grid connected three phase
... for renewable energy. Power electronics converters achieve high efficiency, and the price of their components is falling, thus making them even more beneficial for renewable energy applications. Those systems coupled to the grid need to withstand certain utility-defined circumstances which may occur ...
... for renewable energy. Power electronics converters achieve high efficiency, and the price of their components is falling, thus making them even more beneficial for renewable energy applications. Those systems coupled to the grid need to withstand certain utility-defined circumstances which may occur ...
High Performance CMOS Transmitters for
... I had the good fortune to work with Professor Paul Gray. His technical guidance and support throughout the years have been invaluable. Not only has he taught me a great deal technically but I have found his other lessons equally important. ...
... I had the good fortune to work with Professor Paul Gray. His technical guidance and support throughout the years have been invaluable. Not only has he taught me a great deal technically but I have found his other lessons equally important. ...
Electrical energy supply
... the standards, but for the regulators of the system this automation results in random events that are not controlled and may cause damage. In many countries throughout the world the system is not interconnected, either because it is not sufficiently advanced, or because the country is too large. The ...
... the standards, but for the regulators of the system this automation results in random events that are not controlled and may cause damage. In many countries throughout the world the system is not interconnected, either because it is not sufficiently advanced, or because the country is too large. The ...
Study and Comparison of On-Chip LC Oscillators for Energy Recovery Clocking
... reactances are equal in magnitude but cancel each other because they are 180 degrees apart in phase. When the circuit is at its resonant frequency, the combined imaginary component of the admittance is zero, and only the resistive component is observed. The sharpness of the minimum depends on the va ...
... reactances are equal in magnitude but cancel each other because they are 180 degrees apart in phase. When the circuit is at its resonant frequency, the combined imaginary component of the admittance is zero, and only the resistive component is observed. The sharpness of the minimum depends on the va ...
crystal sets to sideband
... you will hear a voice reciting the letter groups. Sometimes the woman announcer finishes by saying, “Thank you for decoding this message!” Since hams are forbidden to use codes or modulation modes that are not easily decoded, these communications are at least illegal. Yes, it’s true that shortwave i ...
... you will hear a voice reciting the letter groups. Sometimes the woman announcer finishes by saying, “Thank you for decoding this message!” Since hams are forbidden to use codes or modulation modes that are not easily decoded, these communications are at least illegal. Yes, it’s true that shortwave i ...
External Reactive Power Compensation of Permanent Magnet
... The use of wind energy is not a new idea. Mankind has been using it since antiquity. For centuries windmills with watermills were the only source of motive power for many applications, some of which are even still being used today such as sailing, pumps for irrigation or drainage, or grinding grain. ...
... The use of wind energy is not a new idea. Mankind has been using it since antiquity. For centuries windmills with watermills were the only source of motive power for many applications, some of which are even still being used today such as sailing, pumps for irrigation or drainage, or grinding grain. ...
Symmetrical Synchronous Machine per phase machine inductance
... winding of the three phase stator winding is displaced 120 degrees with respect to each other as shown in the figure above. ...
... winding of the three phase stator winding is displaced 120 degrees with respect to each other as shown in the figure above. ...
Catalog information - Kriz
... Capacitors are intended to be operated at or below their rated voltage. All capacitors are designed with a continuous overvoltage capability of 110% of rated voltage and meet IEEE Std 18™-2002 standard. This overvoltage capability is to allow the capacitor to withstand bank and system contingencies ...
... Capacitors are intended to be operated at or below their rated voltage. All capacitors are designed with a continuous overvoltage capability of 110% of rated voltage and meet IEEE Std 18™-2002 standard. This overvoltage capability is to allow the capacitor to withstand bank and system contingencies ...
TPS5130 数据资料 dataSheet 下载
... MOSFETs. The LDO controller can also drive an external N-channel MOSFET. Since the input current ripple is minimized by operating 180 degree out of phase, it allows a smaller input capacitance resulting in reduced power supply cost. The SBRC of the TPS5130 automatically adjusts from PWM mode to SKIP ...
... MOSFETs. The LDO controller can also drive an external N-channel MOSFET. Since the input current ripple is minimized by operating 180 degree out of phase, it allows a smaller input capacitance resulting in reduced power supply cost. The SBRC of the TPS5130 automatically adjusts from PWM mode to SKIP ...
Integra Digital Metering System
... accurate readings even with unusual wiring configurations (e.g. 4-wire open delta). To suit the requirements of individual power monitoring applications, the Integra 1630 digital metering system offers simple programming and display via the menu driven interface. Alternatively, an optional Windows-b ...
... accurate readings even with unusual wiring configurations (e.g. 4-wire open delta). To suit the requirements of individual power monitoring applications, the Integra 1630 digital metering system offers simple programming and display via the menu driven interface. Alternatively, an optional Windows-b ...
Control of Multi-terminal VSC-HVDC Systems
... Current (HVDC) transmission technology. Although the first commercial HVDC link was used for submarine power transmission, it has also been in use for the purpose of reducing transmission losses in long distance power links and interconnection of asynchronous power grids. The earliest HVDC system us ...
... Current (HVDC) transmission technology. Although the first commercial HVDC link was used for submarine power transmission, it has also been in use for the purpose of reducing transmission losses in long distance power links and interconnection of asynchronous power grids. The earliest HVDC system us ...
2004/05 Power Supply Design Seminar Book
... the human body and the permitted current is calculated by multiplying the 50/60 Hz threshold by the frequency in kHz, but with a maximum of 70 mA at all frequencies above 100 kHz. However, these limits can still cause burns if one touches a sharp edge or corner, as current density may be high. Since ...
... the human body and the permitted current is calculated by multiplying the 50/60 Hz threshold by the frequency in kHz, but with a maximum of 70 mA at all frequencies above 100 kHz. However, these limits can still cause burns if one touches a sharp edge or corner, as current density may be high. Since ...
Modeling of Eddy-Current Loss of Electrical Machines and Transformers
... N industrial applications, speed regulation of electric motors is often necessary. An economic solution is to use ac motors supplied with variable voltage variable frequency (VVVF) inverters, commonly known as frequency converters. Other important applications of frequency converters are found in po ...
... N industrial applications, speed regulation of electric motors is often necessary. An economic solution is to use ac motors supplied with variable voltage variable frequency (VVVF) inverters, commonly known as frequency converters. Other important applications of frequency converters are found in po ...
ZXLD1356/ ZXLD1356Q Description Pin Assignments
... designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage. The device operates ...
... designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage. The device operates ...
Spark-gap transmitter
A spark-gap transmitter is a device that generates radio frequency electromagnetic waves using a spark gap.Spark gap transmitters were the first devices to demonstrate practical radio transmission, and were the standard technology for the first three decades of radio (1887–1916). Later, more efficient transmitters were developed based on rotary machines like the high-speed Alexanderson alternators and the static Poulsen Arc generators.Most operators, however, still preferred spark transmitters because of their uncomplicated design and because the carrier stopped when the telegraph key was released, which let the operator ""listen through"" for a reply. With other types of transmitter, the carrier could not be controlled so easily, and they required elaborate measures to modulate the carrier and to prevent transmitter leakage from de-sensitizing the receiver. After WWI, greatly improved transmitters based on vacuum tubes became available, which overcame these problems, and by the late 1920s the only spark transmitters still in regular operation were ""legacy"" installations on naval vessels. Even when vacuum tube based transmitters had been installed, many vessels retained their crude but reliable spark transmitters as an emergency backup. However, by 1940, the technology was no longer used for communication. Use of the spark-gap transmitter led to many radio operators being nicknamed ""Sparks"" long after they ceased using spark transmitters. Even today, the German verb funken, literally, ""to spark,"" also means ""to send a radio message or signal.""