H045045059
... is specified as dc with a voltage range from 28 to 42 V as this level enables it to be utilized in both aircraft and automotive electrical systems. For most applications, the requirements are a small size, high efficiency, and simple control structure since high dynamical control of the torque or sp ...
... is specified as dc with a voltage range from 28 to 42 V as this level enables it to be utilized in both aircraft and automotive electrical systems. For most applications, the requirements are a small size, high efficiency, and simple control structure since high dynamical control of the torque or sp ...
Aalborg Universitet
... models on the transient performances of DFIG wind turbine, the transient performances are simulated with different grid voltage drops and different operational generator speed. In the following simulation, three cases have been investigated for a 40% and 80% gird voltage drops under a super-synchron ...
... models on the transient performances of DFIG wind turbine, the transient performances are simulated with different grid voltage drops and different operational generator speed. In the following simulation, three cases have been investigated for a 40% and 80% gird voltage drops under a super-synchron ...
AE01414711478
... protective devices. Thus, for many critical applications, some type of excitation support system is required f o r self excited generators. These systems, often referred as field forcing schemes , produce more than rated generator current for sufficient t time to ensure that the fault are cleared qu ...
... protective devices. Thus, for many critical applications, some type of excitation support system is required f o r self excited generators. These systems, often referred as field forcing schemes , produce more than rated generator current for sufficient t time to ensure that the fault are cleared qu ...
AN-828 Increasing the High Speed Torque of
... Chopper drives increase the slew rates of the winding currents by applying VCC >> Vrated. Feedback-driven switching of the H-bridges holds the winding currents to the rated limit. Figure 11 shows the chopping states of a single H-bridge of a chopper drive. A low value resistor in the ground lead of ...
... Chopper drives increase the slew rates of the winding currents by applying VCC >> Vrated. Feedback-driven switching of the H-bridges holds the winding currents to the rated limit. Figure 11 shows the chopping states of a single H-bridge of a chopper drive. A low value resistor in the ground lead of ...
Rectifier Circuit Current Ratios
... the fastest protection means available. Under fault conditions, restricting the short circuit energy by a high speed fuse is essential to the protection of SCRs, diodes, and other semiconductor devices in the system. NEC® 430.52 recognizes the use of these types of fuses in motor applications; see t ...
... the fastest protection means available. Under fault conditions, restricting the short circuit energy by a high speed fuse is essential to the protection of SCRs, diodes, and other semiconductor devices in the system. NEC® 430.52 recognizes the use of these types of fuses in motor applications; see t ...
Ch25
... Comment: Don’t say energy or power, which are conservation-of-energy no-no’s! Energy can be transferred but not created by induction. © 2010 Pearson Education, Inc. ...
... Comment: Don’t say energy or power, which are conservation-of-energy no-no’s! Energy can be transferred but not created by induction. © 2010 Pearson Education, Inc. ...
PC Based Wireless Control Of Toy Car
... First, a microcontroller P89V51RD2 is taken, the key feature of which is its X2 mode operation (6 clocks per machine cycle) to achieve twice the throughput at the same clock frequency. Timer 1 is used in mode 2(8 bit auto-reload). It is used to set the baud rate to 1200. After TH1 is set, it starts ...
... First, a microcontroller P89V51RD2 is taken, the key feature of which is its X2 mode operation (6 clocks per machine cycle) to achieve twice the throughput at the same clock frequency. Timer 1 is used in mode 2(8 bit auto-reload). It is used to set the baud rate to 1200. After TH1 is set, it starts ...
Participant Handout - Math Machines Home
... applications, relays have been replaced by transistors or other purely electronic switches which can be less expensive and which are not subject to the possible failure of a relay’s moving parts. On the other hand, relays remain important in many applications because they can be much more efficient ...
... applications, relays have been replaced by transistors or other purely electronic switches which can be less expensive and which are not subject to the possible failure of a relay’s moving parts. On the other hand, relays remain important in many applications because they can be much more efficient ...
AI13 Modular Trainer for Electrotecnics Technical Teaching Equipment
... Star connection (three-phase). Delta connection (three-phase). Parameters determination (short-circuit and open-circuit test). ...
... Star connection (three-phase). Delta connection (three-phase). Parameters determination (short-circuit and open-circuit test). ...
Analysis of an Economical BLDC Drive System
... Dept. of EEE, Mar Athanasius College of Engineering, Kothamangalam, Kerala-686666, India controller due to its simple structure and ease of design. The current control is used to limit the current mainly in modes involving phase C. A simple PWM generator is used to generate the PWM signals to excite ...
... Dept. of EEE, Mar Athanasius College of Engineering, Kothamangalam, Kerala-686666, India controller due to its simple structure and ease of design. The current control is used to limit the current mainly in modes involving phase C. A simple PWM generator is used to generate the PWM signals to excite ...
Induction motor
An induction or asynchronous motor is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding. An induction motor therefore does not require mechanical commutation, separate-excitation or self-excitation for all or part of the energy transferred from stator to rotor, as in universal, DC and large synchronous motors. An induction motor's rotor can be either wound type or squirrel-cage type.Three-phase squirrel-cage induction motors are widely used in industrial drives because they are rugged, reliable and economical. Single-phase induction motors are used extensively for smaller loads, such as household appliances like fans. Although traditionally used in fixed-speed service, induction motors are increasingly being used with variable-frequency drives (VFDs) in variable-speed service. VFDs offer especially important energy savings opportunities for existing and prospective induction motors in variable-torque centrifugal fan, pump and compressor load applications. Squirrel cage induction motors are very widely used in both fixed-speed and variable-frequency drive (VFD) applications. Variable voltage and variable frequency drives are also used in variable-speed service.