Diesel-Electric Propulsion Systems
... are based on the principle of speed controlled AC or DC motors driving the propeller directly or by gearing. The most reliable and low noise design is the direct drive. Electric propulsion systems are designed according to the „power station principle“. That means that under normal conditions all al ...
... are based on the principle of speed controlled AC or DC motors driving the propeller directly or by gearing. The most reliable and low noise design is the direct drive. Electric propulsion systems are designed according to the „power station principle“. That means that under normal conditions all al ...
Limiting short-circuit currents in medium-voltage
... large drives. It is therefore common not to install reactors directly in the path of the starting current of large drives. A typical example of installation is shown in Fig. 4. The reactor will limit the contribution of the generators to the short-circuit current by effectively increasing the impeda ...
... large drives. It is therefore common not to install reactors directly in the path of the starting current of large drives. A typical example of installation is shown in Fig. 4. The reactor will limit the contribution of the generators to the short-circuit current by effectively increasing the impeda ...
08_chapter 3
... In this method, a fixed AC voltage is given to the converter and controlled DC output voltage is obtained by adjusting the ON and OFF periods of the pulses (Ned Mohan et al 2009). This is the most popular method of controlling the output voltage and this method is termed as pulse width modulation co ...
... In this method, a fixed AC voltage is given to the converter and controlled DC output voltage is obtained by adjusting the ON and OFF periods of the pulses (Ned Mohan et al 2009). This is the most popular method of controlling the output voltage and this method is termed as pulse width modulation co ...
IMS2 User Manual
... Caution Statements cannot cover every potential cause of equipment damage but can highlight common causes of damage. It is the installer's responsibility to read and understand all instructions in this manual prior to installing, operating or maintaining the starter, to follow good electrical practi ...
... Caution Statements cannot cover every potential cause of equipment damage but can highlight common causes of damage. It is the installer's responsibility to read and understand all instructions in this manual prior to installing, operating or maintaining the starter, to follow good electrical practi ...
An Improved Weighted Total Harmonic Distortion Index for Induction
... and resistance is again valid for the stator circuit of any random wound ac machine. However, the shorted bars of the rotor of an induction motor produce special problems due to deep bar effect which causes the rotor current to rise to the air gap side of the rotor bars. The overall result is that t ...
... and resistance is again valid for the stator circuit of any random wound ac machine. However, the shorted bars of the rotor of an induction motor produce special problems due to deep bar effect which causes the rotor current to rise to the air gap side of the rotor bars. The overall result is that t ...
Kinetix Motion Control
... Today, industries demand machines with higher throughput at lower costs while also demonstrating energy efficiency and excellent reliability. This is only possible with a system-wide, mechatronic approach - where cross-functional data can be shared between the controls, electrical and the mechanical ...
... Today, industries demand machines with higher throughput at lower costs while also demonstrating energy efficiency and excellent reliability. This is only possible with a system-wide, mechatronic approach - where cross-functional data can be shared between the controls, electrical and the mechanical ...
Gas Insulated Switchgear
... The circuit breaker works on hydraulic mechanism with well-known puffer principle. One interrupter breaking system by dual motion and 2cycle-breaking time show the prominent technology of Hyundai. By adopting vertical type arrangement, the space-saving and good accessibility are assured. ...
... The circuit breaker works on hydraulic mechanism with well-known puffer principle. One interrupter breaking system by dual motion and 2cycle-breaking time show the prominent technology of Hyundai. By adopting vertical type arrangement, the space-saving and good accessibility are assured. ...
A METHOD TO DETERMINE THE RELATIVE LOCATION OF
... event direction must be identified before. Direction finding method has been proposed in (Parsons, et al., 1998, 1999, 2000). These studies used the concept of disturbance energy and dealt with voltage variation and capacitor switching, but they have not considered the kind of event source in event ...
... event direction must be identified before. Direction finding method has been proposed in (Parsons, et al., 1998, 1999, 2000). These studies used the concept of disturbance energy and dealt with voltage variation and capacitor switching, but they have not considered the kind of event source in event ...
Diesel-Electric Propulsion Systems
... are based on the principle of speed controlled AC or DC motors driving the propeller directly or by gearing. The most reliable and low noise design is the direct drive. Electric propulsion systems are designed according to the „power station principle“. That means that under normal conditions all al ...
... are based on the principle of speed controlled AC or DC motors driving the propeller directly or by gearing. The most reliable and low noise design is the direct drive. Electric propulsion systems are designed according to the „power station principle“. That means that under normal conditions all al ...
Automotive Applications Automotive Relays Application Notes Typical Automotive Applications
... This ripple around the effective current depends on the coil inductance, coil suppression, PWM frequency, voltage level and duty ratio. It is always recommended to start with 100% PWM duty ratio until the relay pullsthrough and settles. The necessary time depends on excess voltage, relay type, etc., ...
... This ripple around the effective current depends on the coil inductance, coil suppression, PWM frequency, voltage level and duty ratio. It is always recommended to start with 100% PWM duty ratio until the relay pullsthrough and settles. The necessary time depends on excess voltage, relay type, etc., ...
Designstudie av framtida 10kW växelriktare Daniel Eidborn
... insight into are the most suitable components available for inverters, the way to use them, their expected efficiency and weight of the implemented solutions. ...
... insight into are the most suitable components available for inverters, the way to use them, their expected efficiency and weight of the implemented solutions. ...
optional
... • Protect the converter from excessive mechanical vibrations in the electrical box. • Check that the main supply and the nominal current are coherent with the rating of the drive. Be sure that the voltage between the connectors L1-L2-L3 is not greater than 10% of the nominal values. An excessively h ...
... • Protect the converter from excessive mechanical vibrations in the electrical box. • Check that the main supply and the nominal current are coherent with the rating of the drive. Be sure that the voltage between the connectors L1-L2-L3 is not greater than 10% of the nominal values. An excessively h ...
Design of a Permanent-Magnet Synchronous Generator for a 2 MW
... types of constant-speed and variable-speed. Until the late 1990s, most wind turbines were built for constant-speed applications. The power level in these generators is below 1.5 MW and a multi-stage gearbox-to maintain a constant speed-is often used. Nowadays most wind turbine manufacturers are buil ...
... types of constant-speed and variable-speed. Until the late 1990s, most wind turbines were built for constant-speed applications. The power level in these generators is below 1.5 MW and a multi-stage gearbox-to maintain a constant speed-is often used. Nowadays most wind turbine manufacturers are buil ...
ELA O 320.6 en EGE Arc suppression coil
... suppression coil, voltage of faulty phase can drop almost to zero and the value of voltage of sound phases increases almost to the value of phase to phase voltage (similar to the network with isolated neutral). Voltage occurs on arc suppression coil. If a continuously adjustable arc supression coil ...
... suppression coil, voltage of faulty phase can drop almost to zero and the value of voltage of sound phases increases almost to the value of phase to phase voltage (similar to the network with isolated neutral). Voltage occurs on arc suppression coil. If a continuously adjustable arc supression coil ...
Phase-sequence Phase-loss Relay K8AK-PH Three-phase Phase-sequence Phase-loss Relay Using Voltage Detection Method
... Is it possible to detect phase losses for motor loads while the motor is operating? Phase loss can be detected while the motor is operating. However, the detection conditions depend on the load conditions that are shown in the following figure. Understand these characteristics when using this featur ...
... Is it possible to detect phase losses for motor loads while the motor is operating? Phase loss can be detected while the motor is operating. However, the detection conditions depend on the load conditions that are shown in the following figure. Understand these characteristics when using this featur ...
Electric generator
... Lord Kelvin.[11] His early alternators produced frequencies between 100 and 300 Hz. Ferranti went on to design the Deptford Power Station for the London Electric Supply Corporation in 1887 using an alternating current system. On its completion in 1891, it was the first truly modern power station, su ...
... Lord Kelvin.[11] His early alternators produced frequencies between 100 and 300 Hz. Ferranti went on to design the Deptford Power Station for the London Electric Supply Corporation in 1887 using an alternating current system. On its completion in 1891, it was the first truly modern power station, su ...
Brushed DC electric motor
A brushed DC motor is an internally commutated electric motor designed to be run from a direct current power source. Brushed motors were the first commercially important application of electric power to driving mechanical energy,and DC distribution systems were used for more than 100 years to operate motors in commercial and industrial buildings. Brushed DC motors can be varied in speed by changing the operating voltage or the strength of the magnetic field. Depending on the connections of the field to the power supply, the speed and torque characteristics of a brushed motor can be altered to provide steady speed or speed inversely proportional to the mechanical load. Brushed motors continue to be used for electrical propulsion, cranes, paper machines and steel rolling mills. Since the brushes wear down and require replacement, brushless DC motors using power electronic devices have displaced brushed motors from many applications