Bidirectional VF Control of Single and 3
... switches, or by using gear mechanisms, the direction of rotation can be changed. In this application note we will discuss in detail, how to control the speed of a PSC motor in both directions using a PIC16F72 microcontroller and power electronics. The PIC16F72 microcontroller was chosen because it i ...
... switches, or by using gear mechanisms, the direction of rotation can be changed. In this application note we will discuss in detail, how to control the speed of a PSC motor in both directions using a PIC16F72 microcontroller and power electronics. The PIC16F72 microcontroller was chosen because it i ...
P7C Mechanical Specifications Submittal
... The P7C is a high performance PWM (pulse-width-modulated) AC drive. Three-phase input line power is converted to a sine-coded, variable frequency output, which provides optimum speed control of any conventional squirrel cage induction motor. The use of IGBTs (Insulated Gate Bipolar Transistors), wit ...
... The P7C is a high performance PWM (pulse-width-modulated) AC drive. Three-phase input line power is converted to a sine-coded, variable frequency output, which provides optimum speed control of any conventional squirrel cage induction motor. The use of IGBTs (Insulated Gate Bipolar Transistors), wit ...
EENG 457 POWER SYSTEM ANALYSIS I EXPERIMENT 3 TRANS
... (a) Draw the oneline diagram of the system in the PowerWorld Simulator, using the procedures described in Experiment 1. The system schematic should look like the one shown in Fig. E3-2. (b) Enter all the per unit parameters of the devices calculated in the Preliminary Work using the appropriate dial ...
... (a) Draw the oneline diagram of the system in the PowerWorld Simulator, using the procedures described in Experiment 1. The system schematic should look like the one shown in Fig. E3-2. (b) Enter all the per unit parameters of the devices calculated in the Preliminary Work using the appropriate dial ...
LECTURE 2 Two Major Uses of Power Electronics: Motor Control
... desired high voltage •We will use the term BALLAST to describe the power electronics as this the term used in the lighting industry. Resonant excitation is employed but BOTH series and parallel excitation schemes find use depending on the light source • Ballast requirements as well as tradeoffs will ...
... desired high voltage •We will use the term BALLAST to describe the power electronics as this the term used in the lighting industry. Resonant excitation is employed but BOTH series and parallel excitation schemes find use depending on the light source • Ballast requirements as well as tradeoffs will ...
A Four-Level Inversion Scheme for a 6n-Pole Open
... In this paper, a new power-circuit configuration for four-level inversion with an open-end winding induction motor is proposed. This configuration is suitable for an induction motor with 6n (n = 1, 2, . . .) Number of poles. Two isolated DC power supplies, each rated for one third of the total DC-link ...
... In this paper, a new power-circuit configuration for four-level inversion with an open-end winding induction motor is proposed. This configuration is suitable for an induction motor with 6n (n = 1, 2, . . .) Number of poles. Two isolated DC power supplies, each rated for one third of the total DC-link ...
The Rating of Power Transistor
... After test, VCES is close to VCBO. • If VCER resister value less than 1K, VCES ~ VCER VCER is close to VCES, After test, VCER is close to VCES. • The voltage rating is tested according to the leakage current – No IC current in this moment – VCBO can only be used in normal mode condition ...
... After test, VCES is close to VCBO. • If VCER resister value less than 1K, VCES ~ VCER VCER is close to VCES, After test, VCER is close to VCES. • The voltage rating is tested according to the leakage current – No IC current in this moment – VCBO can only be used in normal mode condition ...
BlueSolar charge controller MPPT 75/15
... output will disconnect the load when the battery has been discharged to a preset voltage. Alternatively, an intelligent battery management algorithm can be chosen: see BatteryLife. The load output is short circuit proof. Some loads (especially inverters) can best be connected directly to the battery ...
... output will disconnect the load when the battery has been discharged to a preset voltage. Alternatively, an intelligent battery management algorithm can be chosen: see BatteryLife. The load output is short circuit proof. Some loads (especially inverters) can best be connected directly to the battery ...
Power electronics basics
... • The inductance gives an indication of electric inertia. Inductors will tend to hold its current fixed. • Any attempt to change the current in an inductor will be answered with an opposing voltage by the inductor. If the current tends to drop, the voltage generated will tend to act as an electromot ...
... • The inductance gives an indication of electric inertia. Inductors will tend to hold its current fixed. • Any attempt to change the current in an inductor will be answered with an opposing voltage by the inductor. If the current tends to drop, the voltage generated will tend to act as an electromot ...
bibilography
... Power quality becomes a major problem for railway power supply system[1]. In this paper discuss about the transformation from three phase variables to two phase variables. The equations expressing old variables in terms of new variables or vice versa are called transformation equations.The process o ...
... Power quality becomes a major problem for railway power supply system[1]. In this paper discuss about the transformation from three phase variables to two phase variables. The equations expressing old variables in terms of new variables or vice versa are called transformation equations.The process o ...
High Speed Counter, SSI Interface, PWM, PULSE Output Modules
... Review module specifications carefully, and ensure that input and output connections are made in accordance with the specifications. Use specified cables for wiring. Field Power Isolators must be used according to the requirements of the 5VDC/24VDC/48VDC or AC Voltage modules used in the system. If ...
... Review module specifications carefully, and ensure that input and output connections are made in accordance with the specifications. Use specified cables for wiring. Field Power Isolators must be used according to the requirements of the 5VDC/24VDC/48VDC or AC Voltage modules used in the system. If ...
GSM160B series
... GSM160B is a highly reliable, 160W desktop style single-output green medical adaptor series. This product is equipped with a 2-pin (no FG) standard IEC320-C8 power plug, adopting the input range from 80VAC to 264VAC. The entire series supplies different output voltages between 12VDC and 48VDC that c ...
... GSM160B is a highly reliable, 160W desktop style single-output green medical adaptor series. This product is equipped with a 2-pin (no FG) standard IEC320-C8 power plug, adopting the input range from 80VAC to 264VAC. The entire series supplies different output voltages between 12VDC and 48VDC that c ...
Radio basics - Berkeley Robotics
... AM was the modulation of choice in the early days of radio because it’s relatively simple to implement, but it isn’t the best from a noise perspective. ...
... AM was the modulation of choice in the early days of radio because it’s relatively simple to implement, but it isn’t the best from a noise perspective. ...
AP_Physics_B_-_Planck_s_Constant_lab
... Materials: Pasco Circuit board, voltmeter, ammeter, various LEDS In this lab we will be introduced to TWO new schematic symbols, This is called a variable resistance, also known as a dimmer switch. There are THREE connections, one on each end and one in the middle. This is called an LED, light emitt ...
... Materials: Pasco Circuit board, voltmeter, ammeter, various LEDS In this lab we will be introduced to TWO new schematic symbols, This is called a variable resistance, also known as a dimmer switch. There are THREE connections, one on each end and one in the middle. This is called an LED, light emitt ...
Bias Power Supply for TFT LCD Panels - Global Mixed
... 600kHz Negative Charge Pump Driver for VGL 600kHz Positive Charge Pump Driver for VGH Power-On Sequence Control Thermal-Overload Protection TQFN3X3-16 Package ...
... 600kHz Negative Charge Pump Driver for VGL 600kHz Positive Charge Pump Driver for VGH Power-On Sequence Control Thermal-Overload Protection TQFN3X3-16 Package ...
TI/National LED Lighting Presentation
... • 6V to 42V (LM3406) • 6V to 75V (LM3406HV) • Hysteretic Operation with Controlled On-Time • Up to 1.5A Constant Current Output ...
... • 6V to 42V (LM3406) • 6V to 75V (LM3406HV) • Hysteretic Operation with Controlled On-Time • Up to 1.5A Constant Current Output ...
Pulse-width modulation
Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.