SINUSOIDAL PWM CONTROLLER OF VOLTAGE SOURCE
... used in more and more modern motor drives to convert and deliver the required energy to the motor. The energy that a switching power converter delivers to a motor is controlled by Pulse Width Modulated (PWM) signals applied to the gates of the power transistors. PWM signals are pulse trains with fix ...
... used in more and more modern motor drives to convert and deliver the required energy to the motor. The energy that a switching power converter delivers to a motor is controlled by Pulse Width Modulated (PWM) signals applied to the gates of the power transistors. PWM signals are pulse trains with fix ...
Electronically Commutated Motors
... from the motor which accepts a 0-10V DC signal and can be wired into building control systems or field supplied controls. With this option, the control leads are terminated in a standard 2x4 junction box from the factory. Field supplied controllers should be provided and installed by others and send ...
... from the motor which accepts a 0-10V DC signal and can be wired into building control systems or field supplied controls. With this option, the control leads are terminated in a standard 2x4 junction box from the factory. Field supplied controllers should be provided and installed by others and send ...
14PE3 Coupled Inductor Based Current
... This paper presents a novel coupled inductor based high boost inverter topology which can be utilized in low voltage renewable systems where high voltage step-up is needed to interface with 110 Vt220 V AC systems. The proposed inverter possesses high boost ability with superior EMI immunity compared ...
... This paper presents a novel coupled inductor based high boost inverter topology which can be utilized in low voltage renewable systems where high voltage step-up is needed to interface with 110 Vt220 V AC systems. The proposed inverter possesses high boost ability with superior EMI immunity compared ...
Propulsion for Small Electric Aircraft
... Electric Motor Performance Electric motors are characterized by their weight, design voltage, and maximum power output, but also by several other parameters that determine how the efficiency and power vary with RPM. If gearboxes are available, the optimal RPM of the propeller and motor can be made ...
... Electric Motor Performance Electric motors are characterized by their weight, design voltage, and maximum power output, but also by several other parameters that determine how the efficiency and power vary with RPM. If gearboxes are available, the optimal RPM of the propeller and motor can be made ...
This is a preliminary list of courses for the study year 2016/2017
... General theory of energy conversion. Rectifiers and line-frequqncy controlled inverters. Autonomous inverters. Current-source, voltage-source and resonance mode inverters. Modulation methods. BUCK and BOOST converters. Frequency converters with high-frequency links. Matrix type converters. Cycloconv ...
... General theory of energy conversion. Rectifiers and line-frequqncy controlled inverters. Autonomous inverters. Current-source, voltage-source and resonance mode inverters. Modulation methods. BUCK and BOOST converters. Frequency converters with high-frequency links. Matrix type converters. Cycloconv ...
FormatOfPapers
... 230 and 400 kV Lines Tables 8 and 9 show the construction costs of 230 and 400 kV lines. Also, characteristics of these lines are listed in Table 10. ...
... 230 and 400 kV Lines Tables 8 and 9 show the construction costs of 230 and 400 kV lines. Also, characteristics of these lines are listed in Table 10. ...
Technical catalogue Fr. 355 - 400
... The chemical and physical characteristics be determined; for this reason, each of the insulation material are fundamental insulation material used must ensure the to the optimum operation and duration reliable operation of the motor within its of any electric motor, and for this reason own absolute ...
... The chemical and physical characteristics be determined; for this reason, each of the insulation material are fundamental insulation material used must ensure the to the optimum operation and duration reliable operation of the motor within its of any electric motor, and for this reason own absolute ...
LECTURE 27 - Rose
... If Vx is the average voltage drop per commutation due to overlap and Vy is the average voltage reduction due to phase angle control that is zero, then average output voltage is (when ignoring commutation overlap): ...
... If Vx is the average voltage drop per commutation due to overlap and Vy is the average voltage reduction due to phase angle control that is zero, then average output voltage is (when ignoring commutation overlap): ...
motors
... the direction of rotation of magnetic field by interchanging any two of the line connections. The speed of revolving of the magnetic field produced by primary currents is called the synchronous speed of the motor, and is given by N= 120f/p where f is the supply frequency and p is the number of poles ...
... the direction of rotation of magnetic field by interchanging any two of the line connections. The speed of revolving of the magnetic field produced by primary currents is called the synchronous speed of the motor, and is given by N= 120f/p where f is the supply frequency and p is the number of poles ...
regulated, programmable, low power consumption, high
... Due to the pulse-burst-mode topology used to achieve ultra-low power consumption, the output variation is larger than the other typical EMCO designs. The actual ripple amplitude and frequency depend on both the load current and the output voltage setting. The adjacent table shows the ripple characte ...
... Due to the pulse-burst-mode topology used to achieve ultra-low power consumption, the output variation is larger than the other typical EMCO designs. The actual ripple amplitude and frequency depend on both the load current and the output voltage setting. The adjacent table shows the ripple characte ...
230/400 V 3-phase AC, secondary voltage: 24 V DC
... 400 V AC. The output voltage is gained by using a 3-phase bridge-connected rectifier. Together with a filter capacitor, this guarantees a small ripple content of the voltage. The power supply unit has a load capability of 20 A. It is suitable for applications in electronic control systems. A green L ...
... 400 V AC. The output voltage is gained by using a 3-phase bridge-connected rectifier. Together with a filter capacitor, this guarantees a small ripple content of the voltage. The power supply unit has a load capability of 20 A. It is suitable for applications in electronic control systems. A green L ...
Deragger Presentation June 2014
... 2007 and expected to grow at a rate of 6 percent annually for the next five years. • This cost the water utilities Millions on inefficient Pumping ...
... 2007 and expected to grow at a rate of 6 percent annually for the next five years. • This cost the water utilities Millions on inefficient Pumping ...
DC385 - LTC1778EGN Evaluation Kit Quick Start Guide
... valley current control architecture to deliver very low duty cycles without requiring a sense resistor. It provides high efficiency operation at light loads by means of discontinuous mode operation. Noise and RF interference are reduced by means of a forced continuous control pin. The circuit uses a ...
... valley current control architecture to deliver very low duty cycles without requiring a sense resistor. It provides high efficiency operation at light loads by means of discontinuous mode operation. Noise and RF interference are reduced by means of a forced continuous control pin. The circuit uses a ...
MAX8653 首款降压型DC-DC转换器，集成MOSFET, REFIN用于跟踪和DDR端接使能、POK可用于排序控制
... 9V to 14V input voltage. The MAX8653 uses a proprietary high-bandwidth, constant-frequency, peak-voltage-mode control architecture and operates at an adjustable switching frequency between 300kHz to 1.5MHz. The architecture is suitable for use with a wide range of output capacitor technologies such ...
... 9V to 14V input voltage. The MAX8653 uses a proprietary high-bandwidth, constant-frequency, peak-voltage-mode control architecture and operates at an adjustable switching frequency between 300kHz to 1.5MHz. The architecture is suitable for use with a wide range of output capacitor technologies such ...
hopkinson`s test - Bhagwant University
... does not take any account of the stray load losses occurring in DC machines under loaded condition. As such the efficiency, calculated by Swinburne’s test is comparatively higher than the actual one. Hopkinson’s test needs two identical DC machines coupled mechanically and connected electrically as ...
... does not take any account of the stray load losses occurring in DC machines under loaded condition. As such the efficiency, calculated by Swinburne’s test is comparatively higher than the actual one. Hopkinson’s test needs two identical DC machines coupled mechanically and connected electrically as ...
Presentation title here
... Converters Characteristics • System requirements: output voltage, current rating, input voltage range • Efficiency • Steady state operation • Transient response • Size, Cost, … ...
... Converters Characteristics • System requirements: output voltage, current rating, input voltage range • Efficiency • Steady state operation • Transient response • Size, Cost, … ...
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.