Aalborg Universitet Control of Grid Converters
... reference is fixed, and set to a level that allows the converter operation over the entire power and grid voltage range. However, decreasing the energy stored in the dc-link can benefit the efficiency of both grid and generator converters due to reduced switching losses [4]. Also for some applicatio ...
... reference is fixed, and set to a level that allows the converter operation over the entire power and grid voltage range. However, decreasing the energy stored in the dc-link can benefit the efficiency of both grid and generator converters due to reduced switching losses [4]. Also for some applicatio ...
P6.3.1.3 - LD Didactic
... does not directly fall on the plates. This prevents falsification of the measurement results due to the photoeffect at the capacitor plates. The x-rays ionize a part of the gas volume in the capacitor. When we apply a voltage UC to the capacitor, the charge carriers, electrons or ions, are collected ...
... does not directly fall on the plates. This prevents falsification of the measurement results due to the photoeffect at the capacitor plates. The x-rays ionize a part of the gas volume in the capacitor. When we apply a voltage UC to the capacitor, the charge carriers, electrons or ions, are collected ...
FSL128MRT Green-Mode Fairchild Power Switch (FPS™) for High Input Voltage
... However, even when the SMPS is in normal operation, the overload protection circuit can be triggered during the load transition. To avoid this undesired operation, the overload protection circuit is designed to trigger only after a specified time to determine whether it is a transient situation or a ...
... However, even when the SMPS is in normal operation, the overload protection circuit can be triggered during the load transition. To avoid this undesired operation, the overload protection circuit is designed to trigger only after a specified time to determine whether it is a transient situation or a ...
Current Control of VSI-PWM Inverters
... substantial advantages in eliminating stator dynamics a in high-performance ac drives and are widely applied in such systems. A basic VSI-PWM system with current control is shown in Fig. 1. Presently, current controllers can be classified as hysteresis, ramp comparison, or predictive controllers. Hy ...
... substantial advantages in eliminating stator dynamics a in high-performance ac drives and are widely applied in such systems. A basic VSI-PWM system with current control is shown in Fig. 1. Presently, current controllers can be classified as hysteresis, ramp comparison, or predictive controllers. Hy ...
TMC603A Datasheet
... The TMC603 is a BLDC driver IC using external power MOS transistors. Its unique feature set allows equipping inexpensive and small drive systems with a maximum of intelligence, protection and diagnostic features. Control algorithms previously only found in much more complex servo drives can now be r ...
... The TMC603 is a BLDC driver IC using external power MOS transistors. Its unique feature set allows equipping inexpensive and small drive systems with a maximum of intelligence, protection and diagnostic features. Control algorithms previously only found in much more complex servo drives can now be r ...
Adaptive switching frequency buck DC–DC converter with high
... ter. Diverse current sensors on-chip and off-chip are developed in previous work. The most common way is using an external resistor in series with the inductor or power transistorsŒ8 ; unfortunately, it enlarges the size and suffers from low efficiency. To make an improvement, the method of applyin ...
... ter. Diverse current sensors on-chip and off-chip are developed in previous work. The most common way is using an external resistor in series with the inductor or power transistorsŒ8 ; unfortunately, it enlarges the size and suffers from low efficiency. To make an improvement, the method of applyin ...
AN9506: A 50W, 500kHz, Full-Bridge, Phase-Shift, ZVS
... charge forces the voltage across MOSFET A to zero (MOSFET B ZVS occurs during the cycles second half), enabling zero voltage switching to take place. Here the MOSFETs output capacitances form a resonant circuit with the resonant inductance. The charge is displaced in a time equal to one-fourth the r ...
... charge forces the voltage across MOSFET A to zero (MOSFET B ZVS occurs during the cycles second half), enabling zero voltage switching to take place. Here the MOSFETs output capacitances form a resonant circuit with the resonant inductance. The charge is displaced in a time equal to one-fourth the r ...
IL410, IL4108
... and also by providing a higher level of LED drive current. The higher LED drive provides a larger photocurrent which causes the triac to turn-on before the commutating spike has activated the zero cross detection circuit. Figure 14 shows the relationship of the LED current for power factors of less ...
... and also by providing a higher level of LED drive current. The higher LED drive provides a larger photocurrent which causes the triac to turn-on before the commutating spike has activated the zero cross detection circuit. Figure 14 shows the relationship of the LED current for power factors of less ...
Sepic inductor ..Degree of coupling
... As previously discussed, the sepic capacitor should be sized so that within the switching period, the dv on the sepic capacitor should be no more than 10% of V(in). {preferably no more than 5% of V(in)}. In the above sepic of ‘schematic A’, this means a sepic capacitor of 10uF, as shown. With a typi ...
... As previously discussed, the sepic capacitor should be sized so that within the switching period, the dv on the sepic capacitor should be no more than 10% of V(in). {preferably no more than 5% of V(in)}. In the above sepic of ‘schematic A’, this means a sepic capacitor of 10uF, as shown. With a typi ...
AK01415111514
... source inverter for various applications. To make this inverter output voltage sinusoidal, a simple L–C filter is normally introduced at the output of this PWM inverter. For high-power applications, the switching frequency of the two-level inverters is very much restricted due to the limitation of t ...
... source inverter for various applications. To make this inverter output voltage sinusoidal, a simple L–C filter is normally introduced at the output of this PWM inverter. For high-power applications, the switching frequency of the two-level inverters is very much restricted due to the limitation of t ...
MAX9610 1µA, µDFN/SC70, Lithium-Ion Battery, Precision Current-Sense Amplifier General Description
... In the linear region (VOUT < VOUT(MAX)), there are two components to accuracy: input offset voltage (VOS) and Gain Error (GE). The MAX9610 has VOS = 500μV (max) and Gain Error of 0.5% (max). Use the following linear equation to calculate total error. VOUT = (Gain ± GE) x VSENSE ± (Gain x VOS) A high ...
... In the linear region (VOUT < VOUT(MAX)), there are two components to accuracy: input offset voltage (VOS) and Gain Error (GE). The MAX9610 has VOS = 500μV (max) and Gain Error of 0.5% (max). Use the following linear equation to calculate total error. VOUT = (Gain ± GE) x VSENSE ± (Gain x VOS) A high ...
Aalborg Universitet Voltage Quality Improvement in Islanded Microgrids Supplying Nonlinear Loads
... listed in Table I. In order to provide proper control of output voltage harmonics, it is proposed in this paper to consider separate current and voltage PI controllers for 5th and 7th harmonics (main harmonics). The measured output voltage should be transformed to dq reference frame, by using -5 and ...
... listed in Table I. In order to provide proper control of output voltage harmonics, it is proposed in this paper to consider separate current and voltage PI controllers for 5th and 7th harmonics (main harmonics). The measured output voltage should be transformed to dq reference frame, by using -5 and ...
Complete ECE 112 Manual
... development process of digital logic controllers and systems. These tasks are divided into individual lab documents that correspond to what is being taught in the Digital Logic Design lecture. Everything learned in lecture is relevant and useful in later (related) courses and in your future career. ...
... development process of digital logic controllers and systems. These tasks are divided into individual lab documents that correspond to what is being taught in the Digital Logic Design lecture. Everything learned in lecture is relevant and useful in later (related) courses and in your future career. ...
Three-Phase TTR® Transformer Turns Ratio Test Set
... The phase angle deviation, displayed in either degrees (minutes) or radians, is the phase relationship between the voltage signal applied to the high voltage winding and the voltage signal extracted from the low voltage winding. The phase deviation together with ratio error can be used as a low cost ...
... The phase angle deviation, displayed in either degrees (minutes) or radians, is the phase relationship between the voltage signal applied to the high voltage winding and the voltage signal extracted from the low voltage winding. The phase deviation together with ratio error can be used as a low cost ...
Diesel-electric Drives Diesel
... Lower fuel consumption and emissions due to the possibility to optimize the loading of diesel engines / gensets. The gensets in operation can run on high loads with high engine efficiency. This applies especially to vessels which have a large variation in power demand, for example for an offshore su ...
... Lower fuel consumption and emissions due to the possibility to optimize the loading of diesel engines / gensets. The gensets in operation can run on high loads with high engine efficiency. This applies especially to vessels which have a large variation in power demand, for example for an offshore su ...
MP2161 - Monolithic Power System
... MP2161 uses constant on-time control with input voltage feed forward to stabilize the switching frequency over full input range. At light load, MP2161 employs a proprietary control of low side switch and inductor current to eliminate ringing on switching node and improve efficiency. Constant On-time ...
... MP2161 uses constant on-time control with input voltage feed forward to stabilize the switching frequency over full input range. At light load, MP2161 employs a proprietary control of low side switch and inductor current to eliminate ringing on switching node and improve efficiency. Constant On-time ...
Drives - Siemens
... The inverter output shall be generated by IGBTs. Pulse Width Modulation strategy will be of the space vector type implemented to generate a sine-coded output voltage. The controller(s) shall be suitable for use with any standard NEMA design B squirrel-cage induction motor. The drive can be located u ...
... The inverter output shall be generated by IGBTs. Pulse Width Modulation strategy will be of the space vector type implemented to generate a sine-coded output voltage. The controller(s) shall be suitable for use with any standard NEMA design B squirrel-cage induction motor. The drive can be located u ...
PSMA Magnetics Committee Proposed Projects for 2008
... is pretty complex. The SPICE model on the right is a reasonable approximation, and is quite simple. However, the loss in Rw is NOT Ir12 * Rw, it is (Ie2 + I12) * Rw. In the simple model, Rw is also a surrogate for Re, so the calculation must recognize the two resistors of the more complex model. The ...
... is pretty complex. The SPICE model on the right is a reasonable approximation, and is quite simple. However, the loss in Rw is NOT Ir12 * Rw, it is (Ie2 + I12) * Rw. In the simple model, Rw is also a surrogate for Re, so the calculation must recognize the two resistors of the more complex model. The ...
Power MOSFET Basics
... VDS(MAX) due to inductive spikes during circuit operation. Therefore, manufacturers commonly specify single and repetitive ratings, and many perform 100% single pulse testing on shipped units. ...
... VDS(MAX) due to inductive spikes during circuit operation. Therefore, manufacturers commonly specify single and repetitive ratings, and many perform 100% single pulse testing on shipped units. ...
Stepper motor
A stepper motor or step motor or stepping motor is a brushless DC electric motor that divides a full rotation into a number of equal steps. The motor's position can then be commanded to move and hold at one of these steps without any feedback sensor (an open-loop controller), as long as the motor is carefully sized to the application in respect to torque and speed.Switched reluctance motors are very large stepping motors with a reduced pole count, and generally are closed-loop commutated.