Study Guide for the Source Inspection of Electrical Equipment
... agreements. The activities outlined in this study guide do not intend to replace the manufacturer’s/fabricator’s own quality system, but rather are meant to guide source inspectors acting on behalf of purchasers to determine whether manufacturers/ fabricators own quality systems have functioned appr ...
... agreements. The activities outlined in this study guide do not intend to replace the manufacturer’s/fabricator’s own quality system, but rather are meant to guide source inspectors acting on behalf of purchasers to determine whether manufacturers/ fabricators own quality systems have functioned appr ...
Physics II Final Exam Review
... Problem 1 The following series RLC circuit has is being forced by the emf ε = 285 sin (ωd t) where ωd = 340 rad s . The pair inductors are in parallel have inductance L1 = L2 = .5H and the capacitor has a capacitance of 1µF . The resistor has a resistance of 500Ω. A Find the peak current and voltage ...
... Problem 1 The following series RLC circuit has is being forced by the emf ε = 285 sin (ωd t) where ωd = 340 rad s . The pair inductors are in parallel have inductance L1 = L2 = .5H and the capacitor has a capacitance of 1µF . The resistor has a resistance of 500Ω. A Find the peak current and voltage ...
Improving motor and drive system performance, a source book for industry (US DoE)
... system and how they interact, essentially shifting the focus from individual components to total system performance. Operators can sometimes be so focused on the immediate demands of their equipment that they overlook the ways in which the system’s parameters are affecting that equipment. A common e ...
... system and how they interact, essentially shifting the focus from individual components to total system performance. Operators can sometimes be so focused on the immediate demands of their equipment that they overlook the ways in which the system’s parameters are affecting that equipment. A common e ...
Notes
... A transformer is a magnetically coupled coil used in transmission of an electric power. This coil may be electrically link, but not electrically linked as in two winding transformer. It consists of primary winding and secondary winding which the number of turns varies depending on the type of transf ...
... A transformer is a magnetically coupled coil used in transmission of an electric power. This coil may be electrically link, but not electrically linked as in two winding transformer. It consists of primary winding and secondary winding which the number of turns varies depending on the type of transf ...
DRV8881 - Texas Instruments
... Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absol ...
... Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absol ...
Evaluation of Back-EMF Estimators for Sensorless Control of
... Traditionally sensorless drives for permanent magnet synchronous motors (PMSMs) have been widely used in various applications because of their advantageous features such as increased reliability and reduced cost. Various sensorless methods have been proposed. They can be classified into two groups: ...
... Traditionally sensorless drives for permanent magnet synchronous motors (PMSMs) have been widely used in various applications because of their advantageous features such as increased reliability and reduced cost. Various sensorless methods have been proposed. They can be classified into two groups: ...
AN1625
... High current GND tracks (i.e. the tracks connected to the sensing resistor) must be connected directly to the negative terminal of the bulk capacitor. A good quality, high-frequency bypass capacitor is also required (typically a 100 nF÷200 nF ceramic would suffice), since electrolytic capacitors sho ...
... High current GND tracks (i.e. the tracks connected to the sensing resistor) must be connected directly to the negative terminal of the bulk capacitor. A good quality, high-frequency bypass capacitor is also required (typically a 100 nF÷200 nF ceramic would suffice), since electrolytic capacitors sho ...
Single layer winding and Double layer winding SINGLE LAYER
... different slots, which are almost a pole pitch apart. The group of conductors on one side of the coil form one coil side while the conductors on the other side of the coil situated a pole pitch (or approximately a pole pitch apart) forms the second coil side. ...
... different slots, which are almost a pole pitch apart. The group of conductors on one side of the coil form one coil side while the conductors on the other side of the coil situated a pole pitch (or approximately a pole pitch apart) forms the second coil side. ...
The starter representing the electric motor посто
... moment at increase of braking of an anchor that facilitates start-up двига-теля. Force of the current consumed by a starter at his(its) work, does not remain to a constant and depends on a condition of the storage battery, сопро-тивления an electric circuit and frequency враще-ния anchors. Owing to ...
... moment at increase of braking of an anchor that facilitates start-up двига-теля. Force of the current consumed by a starter at his(its) work, does not remain to a constant and depends on a condition of the storage battery, сопро-тивления an electric circuit and frequency враще-ния anchors. Owing to ...
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.