- Krest Technology
... prototype with maximum efficiency of 97.78% are presented and discussed. In order to increase the ac current quality, three-level pulse width modulation (PWM) rectifiers have become an interesting alternative to three-phase applications [8]–[13]. They feature high performance for power factor correc ...
... prototype with maximum efficiency of 97.78% are presented and discussed. In order to increase the ac current quality, three-level pulse width modulation (PWM) rectifiers have become an interesting alternative to three-phase applications [8]–[13]. They feature high performance for power factor correc ...
Abstract - Logic Mind Technologies
... factor at the ac mains using a single voltage sensor. The speed of the BLDC motor is controlled by varying the dc bus voltage of the voltage source inverter (VSI) feeding the BLDC motor via a PFC converter. Therefore, the BLDC motor is electronically commutated such that the VSI operates in fundamen ...
... factor at the ac mains using a single voltage sensor. The speed of the BLDC motor is controlled by varying the dc bus voltage of the voltage source inverter (VSI) feeding the BLDC motor via a PFC converter. Therefore, the BLDC motor is electronically commutated such that the VSI operates in fundamen ...
Practice Exam A 2015
... The area control error (ACE) for an electric balancing authority can never be negative because transmission lines always have real power losses. ...
... The area control error (ACE) for an electric balancing authority can never be negative because transmission lines always have real power losses. ...
2 What is the most common means of generating electricity in your
... How are distribution circuits protected against faults and disturbances? Relays sense the fault based on decreased voltage and/or increased current and activate circuit breakers. Many distribution circuits are protected by fuses which respond to high currents caused by faults. ...
... How are distribution circuits protected against faults and disturbances? Relays sense the fault based on decreased voltage and/or increased current and activate circuit breakers. Many distribution circuits are protected by fuses which respond to high currents caused by faults. ...
POWER QUALITY IMPROVEMENT OF THE CUSTOM POWER
... conditioner (UPQC) under unbalanced and distorted load conditions. UNIFIED POWERQUALITY (PQ) conditioner (UPQC) systems were widely studied by many researchers as an eventual method to improve the PQ in electrical distribution systems. The aim of a UPQC is to eliminate the disturbances that affect t ...
... conditioner (UPQC) under unbalanced and distorted load conditions. UNIFIED POWERQUALITY (PQ) conditioner (UPQC) systems were widely studied by many researchers as an eventual method to improve the PQ in electrical distribution systems. The aim of a UPQC is to eliminate the disturbances that affect t ...
Homework 5
... per cycle. Compare the power consumption and energy per cycle for the rated and low energy modes. ...
... per cycle. Compare the power consumption and energy per cycle for the rated and low energy modes. ...
NOVEL HIGH-PERFORMANCE STAND
... battery sources. This results in minimization of partial shading and parasitic capacitance effects on the PV source. The proposed scheme is particularly conducive to long battery life by as it ensures no battery overcharge or deep discharge. For this purpose, the conventional MPPT scheme is replaced ...
... battery sources. This results in minimization of partial shading and parasitic capacitance effects on the PV source. The proposed scheme is particularly conducive to long battery life by as it ensures no battery overcharge or deep discharge. For this purpose, the conventional MPPT scheme is replaced ...
Electric power and Joule heating
... may be carried over a greater distance with acceptable power loss. An advantage of the North American setup is that failure or maintenance on a single transformer will only affect a few customers. Advantages of the UK setup are that the transformers may be fewer, larger and more efficient, and due t ...
... may be carried over a greater distance with acceptable power loss. An advantage of the North American setup is that failure or maintenance on a single transformer will only affect a few customers. Advantages of the UK setup are that the transformers may be fewer, larger and more efficient, and due t ...
1. Given the following five-bus power system (with lOOMVA base): (b)
... 5. The percentage differential relay and the overvoltage relay are to be applied to the protection of generator windings. (15 %) (a) Sketch the developed three-phase or single-phase wiring diagram (which depicts the CT or PT connections) for both the percentage differential and the overvoltage relay ...
... 5. The percentage differential relay and the overvoltage relay are to be applied to the protection of generator windings. (15 %) (a) Sketch the developed three-phase or single-phase wiring diagram (which depicts the CT or PT connections) for both the percentage differential and the overvoltage relay ...
EUP7117 High Efficiency, Synchronous Step-Down Controller
... The EUP7117 is a high-efficiency, low power synchronous buck controller for a core logic power supply in notebook applications. Two external N-channel MOSFETs are needed by the controller to generate an output voltage as low as 0.75V and output current up to 15A from an input supply (1.8V to 28V). E ...
... The EUP7117 is a high-efficiency, low power synchronous buck controller for a core logic power supply in notebook applications. Two external N-channel MOSFETs are needed by the controller to generate an output voltage as low as 0.75V and output current up to 15A from an input supply (1.8V to 28V). E ...
Analysis and Simulation of Bus Loading conditions on Voltage Sag
... Deals with the generation, transmission and distribution of electric power as well as the electrical devices connected to such systems including generators, motors and transformers. ...
... Deals with the generation, transmission and distribution of electric power as well as the electrical devices connected to such systems including generators, motors and transformers. ...
DC Regulated Power Supplies
... We are offering DC Regulated Power Supplies, which are designed and developed for standard single phase power supply of 230V and 50Hz. Clients can contact us for availing these power supplies in standard configurations with main cord, spare fuse and operating manual. Accuracy in readings and high pe ...
... We are offering DC Regulated Power Supplies, which are designed and developed for standard single phase power supply of 230V and 50Hz. Clients can contact us for availing these power supplies in standard configurations with main cord, spare fuse and operating manual. Accuracy in readings and high pe ...
AC DC
... Smooth delivery of power for running motors People would prefer not to live close to powerplants, so electricity should be able to be transmitted over relatively long distances Transmission should be efficient, not a lot of power loss from powerplant to customer Might need both DC and AC ...
... Smooth delivery of power for running motors People would prefer not to live close to powerplants, so electricity should be able to be transmitted over relatively long distances Transmission should be efficient, not a lot of power loss from powerplant to customer Might need both DC and AC ...
ppt - EC - Unit 7 - Linear Power Supply
... 14.6 Linear IC Voltage Regulators 14.7 Regulated Power Supply Parameters Switched Mode Power Supplies: 15.1 Switched Mode Power Supplies 15.6 Connecting Power Converters in Series 15.7 Connecting Power Converters in Parallel ...
... 14.6 Linear IC Voltage Regulators 14.7 Regulated Power Supply Parameters Switched Mode Power Supplies: 15.1 Switched Mode Power Supplies 15.6 Connecting Power Converters in Series 15.7 Connecting Power Converters in Parallel ...
TENMA VARIABLE OUTPUT ISOLATION TRANSFORMER SAFETY
... TENMA VARIABLE OUTPUT ISOLATION TRANSFORMER SAFETY: AC power supplies are sources of high voltage. Improper or careless use could result in fatal electrical shock. Observe common sense safety precautions when using this and other electronic devices. Turn the INPUT POWER switch OFF and set the OUTPUT ...
... TENMA VARIABLE OUTPUT ISOLATION TRANSFORMER SAFETY: AC power supplies are sources of high voltage. Improper or careless use could result in fatal electrical shock. Observe common sense safety precautions when using this and other electronic devices. Turn the INPUT POWER switch OFF and set the OUTPUT ...
SONDERKOLLOQUIUM der TF am 14.02.2014 Herr Prof. Costas D. Vournas
... the book “Voltage Stability of Electric Power Systems”. His research interests are in the area of power system dynamics, stability, and control and include voltage stability and security analysis, wind generator integration in power systems, as well as the effect of deregulation on power system oper ...
... the book “Voltage Stability of Electric Power Systems”. His research interests are in the area of power system dynamics, stability, and control and include voltage stability and security analysis, wind generator integration in power systems, as well as the effect of deregulation on power system oper ...
Amtrak's 25 Hz traction power system
Amtrak's 25 Hz Traction Power System is a traction power grid operated by Amtrak along the southern portion of its Northeast Corridor (NEC): the 225 route miles (362 km) between Washington, D.C. and New York City and the 104 route miles (167 km) between Philadelphia and Harrisburg, Pennsylvania. The Pennsylvania Railroad constructed it between 1915 and 1938. Amtrak inherited the system from Penn Central, the successor to Pennsylvania Railroad, in 1976 along with the Northeast Corridor. In addition to serving the NEC, the system provides power to New Jersey Transit Rail Operations (NJT), the Southeastern Pennsylvania Transportation Authority (SEPTA) and the Maryland Area Regional Commuter Train (MARC). Only about half of the system's electrical capacity is used by Amtrak. The remainder is sold to the commuter railroads who operate their trains along the corridor.