Dual Winding Method of a BLDC Motor for Large Starting Torque
... A BRUSHLESS dc (BLDC) motor has been widely used in the driving source of many precision electromechanical devices not only because it has high efficiency but also because it has good controllability. [1]. The linear torque–speed characteristics of a BLDC motor make it easy to control its speed over ...
... A BRUSHLESS dc (BLDC) motor has been widely used in the driving source of many precision electromechanical devices not only because it has high efficiency but also because it has good controllability. [1]. The linear torque–speed characteristics of a BLDC motor make it easy to control its speed over ...
view pdf - AMETEK Programmable Power
... products, as well as is being a standard instrument for automatic test systems and evaluation of dc power supplies, batteries, and power components. Other applications include use as a power circuit breaker or crowbar, high current function or pulse generator, fuel-cell and photovoltaic cell test, a ...
... products, as well as is being a standard instrument for automatic test systems and evaluation of dc power supplies, batteries, and power components. Other applications include use as a power circuit breaker or crowbar, high current function or pulse generator, fuel-cell and photovoltaic cell test, a ...
SD740 – TRIAXIAL GYROSCOPE PRODUCT DATASHEET
... encapsulated by means of a wafer level packaging technique. The ASIC provides configurable output filters allowing the user to customize both gain and bandwidth. Zero rate bias can be adjusted as well. The device also includes self test features for a continuous module monitoring thus providing very ...
... encapsulated by means of a wafer level packaging technique. The ASIC provides configurable output filters allowing the user to customize both gain and bandwidth. Zero rate bias can be adjusted as well. The device also includes self test features for a continuous module monitoring thus providing very ...
AXIMA 2000/4000 Installation Manual
... The control circuits are isolated from the power circuits in the controller by basic insulation only. The installer must ensure that the external control circuits are isolated from human contact by at least one layer of insulation rated for use at the applied AC supply voltage. ...
... The control circuits are isolated from the power circuits in the controller by basic insulation only. The installer must ensure that the external control circuits are isolated from human contact by at least one layer of insulation rated for use at the applied AC supply voltage. ...
A Unified Approach for the Optimal PMU Location for Power System
... II. PMUS AND POWER SYSTEM STATE ESTIMATION PMUs are now used in power systems for many potential applications. The PMUs receive their synchronized signals form the GPS Satellite and are now being manufactured commercially. Their importance comes from the fact that they can provide synchronized measu ...
... II. PMUS AND POWER SYSTEM STATE ESTIMATION PMUs are now used in power systems for many potential applications. The PMUs receive their synchronized signals form the GPS Satellite and are now being manufactured commercially. Their importance comes from the fact that they can provide synchronized measu ...
Blancett K-Factor Scaler Elbow Style Frequency Divider
... counting and display. The use of different K-Factor values allows the device to display in any number of volumetric measurements such as gallons, cubic meters, liters, barrels and like units. The calibration sheet usually provided with a turbine meter lists a nominal K-Factor tested to a specific vo ...
... counting and display. The use of different K-Factor values allows the device to display in any number of volumetric measurements such as gallons, cubic meters, liters, barrels and like units. The calibration sheet usually provided with a turbine meter lists a nominal K-Factor tested to a specific vo ...
Ferroelectric Characterization Tutorial
... simultaneously so the change in more than one thermodynamic state may be measured during a test. • The voltage input can be used to capture the output of sensors that convert a thermodynamic state to a voltage: ...
... simultaneously so the change in more than one thermodynamic state may be measured during a test. • The voltage input can be used to capture the output of sensors that convert a thermodynamic state to a voltage: ...
Written Pole Motors
... In the 1990’s, with support from the Electric Power Research Institute (EPRI), the Precise Power Corporation of Bradenton, Florida, developed a new concept in electric motors called the Written Pole® electric motor. This new motor type dramatically reduces starting currents of single phase motors an ...
... In the 1990’s, with support from the Electric Power Research Institute (EPRI), the Precise Power Corporation of Bradenton, Florida, developed a new concept in electric motors called the Written Pole® electric motor. This new motor type dramatically reduces starting currents of single phase motors an ...
Practical Papers, Articles and Application Notes
... but is written in US English rather than Oxford English, which for example deprecates the use of “z’’ in such words as “standardization” where the “z” is replaced by an “s”. [4] The third document is NIST TN 1297, Guidelines for Evaluating and Expressing the Uncertainty of NIST Measurement Results. ...
... but is written in US English rather than Oxford English, which for example deprecates the use of “z’’ in such words as “standardization” where the “z” is replaced by an “s”. [4] The third document is NIST TN 1297, Guidelines for Evaluating and Expressing the Uncertainty of NIST Measurement Results. ...
3-Phase PM Synchronous Motor Nyachulue Njita High Speed with Low Torque
... specific frequency value supplied from a variable frequency drive (VFD) source. The thesis explains in detail the effect of varying the frequency values supplied from the VFD system on the motor’s speed. This study also aims for determining the torque-speed characteristic curve of this motor and ana ...
... specific frequency value supplied from a variable frequency drive (VFD) source. The thesis explains in detail the effect of varying the frequency values supplied from the VFD system on the motor’s speed. This study also aims for determining the torque-speed characteristic curve of this motor and ana ...
MAX690âMAX695 Microprocessor Supervisory Circuits
... does not include chip enable gating circuitry that is available on the MAX690/MAX692/MAX694. In many systems though, CE gating is not needed since a low input to the microprocessor RESET line prevents the processor from writing to RAM during power-up and power-down transients. ...
... does not include chip enable gating circuitry that is available on the MAX690/MAX692/MAX694. In many systems though, CE gating is not needed since a low input to the microprocessor RESET line prevents the processor from writing to RAM during power-up and power-down transients. ...
19. Circuit Breakers
... blows out, it takes quite sometime to replace it and restore supply to the customers. Secondly, a fuse cannot successfully interrupt heavy fault currents that result from faults on modern high-voltage and large capacity circuits. Due to these disadvantages, the use of switches and fuses is limited t ...
... blows out, it takes quite sometime to replace it and restore supply to the customers. Secondly, a fuse cannot successfully interrupt heavy fault currents that result from faults on modern high-voltage and large capacity circuits. Due to these disadvantages, the use of switches and fuses is limited t ...
Fabrication and Integration of Ultrathin, High
... cost. The limited aspect ratios also pose a challenge in terms of achieving higher capacitance density. In addition, the use of expensive tools renders them non-scalable for high-volume manufacturing so as to end up with low cost. Similarly, the fully-integrated-voltage-regulator [6, 7] by Intel wit ...
... cost. The limited aspect ratios also pose a challenge in terms of achieving higher capacitance density. In addition, the use of expensive tools renders them non-scalable for high-volume manufacturing so as to end up with low cost. Similarly, the fully-integrated-voltage-regulator [6, 7] by Intel wit ...
Calculation Method of Losses and Efficiency of Wind
... In order to capture more energy from wind, it is essential to analyze the loss characteristics of WG, which can be determined from wind speed. Furthermore, since many non-linear losses occur in WG, making prediction profit by using average wind speed may cause many errors. This chapter presents a me ...
... In order to capture more energy from wind, it is essential to analyze the loss characteristics of WG, which can be determined from wind speed. Furthermore, since many non-linear losses occur in WG, making prediction profit by using average wind speed may cause many errors. This chapter presents a me ...
LTM4604A - Low Voltage, 4A DC/DC uModule with Tracking
... a ±7.5% window around the regulation point. Furthermore, in an overvoltage condition, internal top FET M1 is turned off and bottom FET M2 is turned on and held on until the overvoltage condition clears. Pulling the RUN pin below 0.5V forces the controller into its shutdown state, turning off both M1 ...
... a ±7.5% window around the regulation point. Furthermore, in an overvoltage condition, internal top FET M1 is turned off and bottom FET M2 is turned on and held on until the overvoltage condition clears. Pulling the RUN pin below 0.5V forces the controller into its shutdown state, turning off both M1 ...
PV Inverter SUNNY BOY 6000TL‑US ⁄ 7000TL‑US
... distribution grid. This current is first supplied to the local loads (E). The surplus energy is fed into the power distribution grid (G). The amount of current required from the power distribution grid is reduced by the current supplied directly to the local loads. An energy surplus may even result ...
... distribution grid. This current is first supplied to the local loads (E). The surplus energy is fed into the power distribution grid (G). The amount of current required from the power distribution grid is reduced by the current supplied directly to the local loads. An energy surplus may even result ...
Third Rail Fuse Link Application Guide
... crossovers), and for safety at stations, the third rail will be on the opposite side of the track from the platform. The third rail usually alternates between sides of the train as shown on Figure 2. To allow for this there are pick up shoes on both sides of the train. Most rail systems use train se ...
... crossovers), and for safety at stations, the third rail will be on the opposite side of the track from the platform. The third rail usually alternates between sides of the train as shown on Figure 2. To allow for this there are pick up shoes on both sides of the train. Most rail systems use train se ...
ITEM L-109 INSTALLATION OF AIRPORT TRANSFORMER VAULT
... 109-2.11 BUS SUPPORTS. Bus supports shall be similar to Westinghouse No. 527892 (or equal), insulated for 7500 volts, single clamp type for 2-bolt flat mounting. 109-2.12 GROUND BUS. Ground bus shall be 1/8” x 3/4” copper bus bar and shall be continuous around the interior of the metal housing. 109- ...
... 109-2.11 BUS SUPPORTS. Bus supports shall be similar to Westinghouse No. 527892 (or equal), insulated for 7500 volts, single clamp type for 2-bolt flat mounting. 109-2.12 GROUND BUS. Ground bus shall be 1/8” x 3/4” copper bus bar and shall be continuous around the interior of the metal housing. 109- ...
Mains electricity
Mains electricity is the general-purpose alternating-current (AC) electric power supply. In the US, electric power is referred to by several names including household power, household electricity, house current, powerline, domestic power, wall power, line power, AC power, city power, street power, and grid power.The two principal properties of the electric power supply, voltage and frequency, differ between regions. A voltage of (nominally) 230 V and a frequency of 50 Hz is used in Europe, most of Asia, most of South America and Australia. In North America, the most common combination is 120 V and a frequency of 60 Hz. Other voltages exist, and some countries may have, for example, 230 V but 60 Hz. This is a concern to travelers, since portable appliances designed for one voltage and frequency combination may not operate or may be destroyed by another.The use of different plugs and sockets in different regions provides some protection from accidental use of appliances with incompatible voltage and frequency requirements.