Tachogenerator PDF document
... A.C. Rectified Tachogenerator Where improved speedholding (±1%) is required from motors running at 50 r/min and above, an a.c. rectified tachogenerator can be easily retrofitted to all the Stockline d.c. motors. The tachogenerator could also be fitted directly to machinery shafts or the back of a.c. ...
... A.C. Rectified Tachogenerator Where improved speedholding (±1%) is required from motors running at 50 r/min and above, an a.c. rectified tachogenerator can be easily retrofitted to all the Stockline d.c. motors. The tachogenerator could also be fitted directly to machinery shafts or the back of a.c. ...
Voltage/DC current
... Analogy: Electric flow is similar to water flow. A waterfall, for example, provides a lot of energy when water flows down. We would say that it has a high voltage. - Be careful! If you use too much voltage, you might break the components! - The voltmeter measures the drop of electric energy (Voltage ...
... Analogy: Electric flow is similar to water flow. A waterfall, for example, provides a lot of energy when water flows down. We would say that it has a high voltage. - Be careful! If you use too much voltage, you might break the components! - The voltmeter measures the drop of electric energy (Voltage ...
PDF
... temperature within the required value. When a fan at full speed is not required for keeping the temperature of water within limit, it is run at reduced speed by using a Variable Frequency Drive. Hence we can save huge amount of energy. B. Selective Switching of cooling water pumps: In any plant ther ...
... temperature within the required value. When a fan at full speed is not required for keeping the temperature of water within limit, it is run at reduced speed by using a Variable Frequency Drive. Hence we can save huge amount of energy. B. Selective Switching of cooling water pumps: In any plant ther ...
LA78045 - IHS.com
... www.onsemi.com/site/pdf/Patent-Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arisin ...
... www.onsemi.com/site/pdf/Patent-Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arisin ...
DC and AC Motor Drives
... Introduction: DC Motor Drives • Direct current (dc) motors have variable characteristics and are used extensively in variable-speed drives. • DC motors can provide a high starting torque and it is also possible to obtain speed control over a wide range. • The methods of speed control are normally s ...
... Introduction: DC Motor Drives • Direct current (dc) motors have variable characteristics and are used extensively in variable-speed drives. • DC motors can provide a high starting torque and it is also possible to obtain speed control over a wide range. • The methods of speed control are normally s ...
Drive Solutions for the Global Cement Industry
... torque signal is critical, and is available from the TMEIC drive products. The VFD also provides a kiln speed analog output signal which, together with torque, is sent to the process control system. ...
... torque signal is critical, and is available from the TMEIC drive products. The VFD also provides a kiln speed analog output signal which, together with torque, is sent to the process control system. ...
Maintaining a Constant DC Power Supply
... Energy dissipated in an electrical or electronic circuit or device per unit of time is known as the electrical power (electrical power is usually measured in watts). Electrical energy supplied by a current to an appliance enables it to do work witch could provide some other form of energy. The diffi ...
... Energy dissipated in an electrical or electronic circuit or device per unit of time is known as the electrical power (electrical power is usually measured in watts). Electrical energy supplied by a current to an appliance enables it to do work witch could provide some other form of energy. The diffi ...
Welcome to Power Tower Nano SP the ultimate in
... Power Tower Nano SP provides the user with a tiny working footprint when maneuvering of 1.2m x 0.75m (closed) and a large platform size of 1.5m x 0.72m (deck extended). No climbing platform steps, podiums or erecting scaffold towers, quicker and easier than push around powered platforms. When the ap ...
... Power Tower Nano SP provides the user with a tiny working footprint when maneuvering of 1.2m x 0.75m (closed) and a large platform size of 1.5m x 0.72m (deck extended). No climbing platform steps, podiums or erecting scaffold towers, quicker and easier than push around powered platforms. When the ap ...
RL Line/Load Reactors
... disturbances which otherwise damage or shut down your inverters, variable frequency drives (VFDs), variable speed controllers, or other sensitive equipment. They are a robust filtering solution for virtually any 6 pulse rectifier or power conversion unit. There is no need to de-rate MTE RL reactors ...
... disturbances which otherwise damage or shut down your inverters, variable frequency drives (VFDs), variable speed controllers, or other sensitive equipment. They are a robust filtering solution for virtually any 6 pulse rectifier or power conversion unit. There is no need to de-rate MTE RL reactors ...
Infra-Red Switch
... correct frequency for the I.R. receiver module to be used. The second oscillator modulates the first oscillator at a frequency of a few hundred Hertz. By varying the frequency of the modulation, we can change the “channel”. ...
... correct frequency for the I.R. receiver module to be used. The second oscillator modulates the first oscillator at a frequency of a few hundred Hertz. By varying the frequency of the modulation, we can change the “channel”. ...
... watt of the full system upon integration of the inverter with the system. SPWM control is implemented in dsPIC 33FJ16GS504 microcontroller using MicroC for dsPIC. The experiment is carried out using a 500W inverter. The results are obtained for different input voltages to the inverter and different ...
Transverter Interface Unit
... For most transceivers this need be no more than 1 Amp rating Two PIN diodes, driven from the above supplies, connect the transceiver to either the receive mixer port, or via a power attenuator to the transmit mixer port. The attenuator is rated at 3 watts continuous, and will handle SSB signals of u ...
... For most transceivers this need be no more than 1 Amp rating Two PIN diodes, driven from the above supplies, connect the transceiver to either the receive mixer port, or via a power attenuator to the transmit mixer port. The attenuator is rated at 3 watts continuous, and will handle SSB signals of u ...
Oscilloscope and High Voltage Probe Facilitage Motor
... section in a Robicon cell. In designing the cells, and the system as a whole, care must be taken to minimize the inductance of the power buses connected to the cell output. Excessive inductance can cause “kickback” voltages to occur when an IGBT is rapidly switched off. Even though the effective DC ...
... section in a Robicon cell. In designing the cells, and the system as a whole, care must be taken to minimize the inductance of the power buses connected to the cell output. Excessive inductance can cause “kickback” voltages to occur when an IGBT is rapidly switched off. Even though the effective DC ...
Alternating Current and Direct Current
... circle with the wavy line inside is the generic symbol for any AC voltage source. One might wonder why anyone would bother with such a thing as AC. It is true that in some cases AC holds no practical advantage over DC. In applications where electricity is used to dissipate energy in the form of heat ...
... circle with the wavy line inside is the generic symbol for any AC voltage source. One might wonder why anyone would bother with such a thing as AC. It is true that in some cases AC holds no practical advantage over DC. In applications where electricity is used to dissipate energy in the form of heat ...
Variable-frequency drive
A variable-frequency drive (VFD) (also termed adjustable-frequency drive, variable-speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.VFDs are used in applications ranging from small appliances to the largest of mine mill drives and compressors. However, around 25% of the world's electrical energy is consumed by electric motors in industrial applications, which are especially conducive for energy savings using VFDs in centrifugal load service, and VFDs' global market penetration for all applications is still relatively small. That lack of penetration highlights significant energy efficiency improvement opportunities for retrofitted and new VFD installations.Over the last four decades, power electronics technology has reduced VFD cost and size and has improved performance through advances in semiconductor switching devices, drive topologies, simulation and control techniques, and control hardware and software.VFDs are available in a number of different low- and medium-voltage AC-AC and DC-AC topologies.