IJIREEICE 34
... Keywords: Sliding Mode Control, Sliding coefficient, Buck Converter, Modeling, Hysteresis modulation. I. INTRODUCTION One of the most significant features of the sliding mode regime in variable structure systems (VSS) is the capacity to attain responses that are independent of the system parameters[ ...
... Keywords: Sliding Mode Control, Sliding coefficient, Buck Converter, Modeling, Hysteresis modulation. I. INTRODUCTION One of the most significant features of the sliding mode regime in variable structure systems (VSS) is the capacity to attain responses that are independent of the system parameters[ ...
TS19452_A12
... According a filter capacitor across the LED string can reduce the output current ripple even further, thus permitting a reduced value of L1. However, one must keep in mind that the peak-to-average current error is affected by the variation of TOFF. Therefore, the initial output current accuracy migh ...
... According a filter capacitor across the LED string can reduce the output current ripple even further, thus permitting a reduced value of L1. However, one must keep in mind that the peak-to-average current error is affected by the variation of TOFF. Therefore, the initial output current accuracy migh ...
3-phase switching power supply 400
... Output protection: limit current can be selected as between 10% and 100% of rated current; protection type against overload and short circuit can be chosen from: 1) hiccup autoreset with limit current, equal to 150% of rated current and ON/OFF time equal to 5 secs./10 secs. (values can be altered ma ...
... Output protection: limit current can be selected as between 10% and 100% of rated current; protection type against overload and short circuit can be chosen from: 1) hiccup autoreset with limit current, equal to 150% of rated current and ON/OFF time equal to 5 secs./10 secs. (values can be altered ma ...
Fine-Grain Power Control for Field Programmable Gate Arrays
... We modified a public domain FPGA place-and-route tool to handle assignment of the voltage domains for non-critical paths. Thus, by selecting either a low or high voltage for each domain, this method achieves an average of 2X improvement in power for the same performance, as shown in Figure 1. The hi ...
... We modified a public domain FPGA place-and-route tool to handle assignment of the voltage domains for non-critical paths. Thus, by selecting either a low or high voltage for each domain, this method achieves an average of 2X improvement in power for the same performance, as shown in Figure 1. The hi ...
DRV11873 12-V, 3-Phase Sensorless BLDC Motor Controller (Rev. A)
... 8.3.3 FS Setting DRV11873 can fit a wide range of fan motors by setting the FS pin. For high speed fan motors with low motor winding resistance and low inductance, the FS pin should be pulled high. For low speed fan motors with high motor winding resistance and high inductance, the FS pin should be ...
... 8.3.3 FS Setting DRV11873 can fit a wide range of fan motors by setting the FS pin. For high speed fan motors with low motor winding resistance and low inductance, the FS pin should be pulled high. For low speed fan motors with high motor winding resistance and high inductance, the FS pin should be ...
Practical 19 Characteristics of diodes
... To investigate the characteristic curve of a practical diode. EQUIPMENT ...
... To investigate the characteristic curve of a practical diode. EQUIPMENT ...
Investigation of a Power Factor Correction Fed
... As a consequence of this requirement, different kind of power quality correction techniques are available today for applications using BLDC motor drives, but the most common is the Power Factor Correction (PFC) converter. PFC improves the power quality at ac mains as it reduces the total harmonic di ...
... As a consequence of this requirement, different kind of power quality correction techniques are available today for applications using BLDC motor drives, but the most common is the Power Factor Correction (PFC) converter. PFC improves the power quality at ac mains as it reduces the total harmonic di ...
Section 16482 - Siemens Industry
... Serial communication capabilities shall include, but not be limited to, run-stop control; speed set adjustment, proportional/integral/derivative PID control (Set Point) adjustments, current limit and accel/decel time adjustments. The drive shall have the capability of allowing the DDC to monitor fee ...
... Serial communication capabilities shall include, but not be limited to, run-stop control; speed set adjustment, proportional/integral/derivative PID control (Set Point) adjustments, current limit and accel/decel time adjustments. The drive shall have the capability of allowing the DDC to monitor fee ...
GG2310881094
... Fig 2.3: 3P3W UPQC structure. Recently, the utility service providers are putting function as a controlled voltage source. If we could use more and more restrictions on current total harmonic the neutral of three-phase series transformer to connect a distortion (THD) limits, drawn by nonlinear loads ...
... Fig 2.3: 3P3W UPQC structure. Recently, the utility service providers are putting function as a controlled voltage source. If we could use more and more restrictions on current total harmonic the neutral of three-phase series transformer to connect a distortion (THD) limits, drawn by nonlinear loads ...
Fully integrated power supply
... In case of overcurrent the voltage at pin COMP saturates high and the conduction of the power MOSFET is stopped by the OCP comparator instead of the PWM comparator. Under zero load conditions the COMP pin is close to its low saturation and the gate drive delivers as short pulses as it can, limited b ...
... In case of overcurrent the voltage at pin COMP saturates high and the conduction of the power MOSFET is stopped by the OCP comparator instead of the PWM comparator. Under zero load conditions the COMP pin is close to its low saturation and the gate drive delivers as short pulses as it can, limited b ...
FQ2110571064
... voltage-source converter (shunt VSC) and two or more series VSCs exist. The system can be applied to adjacent feeders to compensate for supply-voltage and load current imperfections on the main feeder and full compensation of supply voltage imperfections on the other feeders. In the proposed configu ...
... voltage-source converter (shunt VSC) and two or more series VSCs exist. The system can be applied to adjacent feeders to compensate for supply-voltage and load current imperfections on the main feeder and full compensation of supply voltage imperfections on the other feeders. In the proposed configu ...
6.302 Feedback Systems
... In the waveform that you just analyzed, the parameter “D” is called the duty cycle. Modulating, or changing, the duty cycle in order to achieve a certain DC value is a common control technique. It is called pulse width modulation, or PWM. One of the places PWM is useful is in voltage conversion. Oft ...
... In the waveform that you just analyzed, the parameter “D” is called the duty cycle. Modulating, or changing, the duty cycle in order to achieve a certain DC value is a common control technique. It is called pulse width modulation, or PWM. One of the places PWM is useful is in voltage conversion. Oft ...
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.