Power losses

Part 1 book "Electric power distribution engineering" includes content: Distribution system planning and automation; load characteristics; application of distribution transformers; design of subtransmission lines and distribution substations; design considerations of primary systems; design considerations of secondary systems; voltage drop and power loss calculations; application of capacitors to distribution systems; distribution system voltage regulation.

531p dianmotminh03 17-06-2024 1 0   Download

Part 2 book "Transformer design principles" includes content: High voltage insulation design; electric field calculations; losses; thermal model of a core form power transformer and related thermal calculations; load tap changers; phase shifting transformers; cost minimization.

303p dianmotminh03 17-06-2024 1 0   Download

Part 2 book "Switching power supply design" includes content: Bipolar power transistor mase drives, MOSFET powwer transistors and input driver circuits, magnetic- amplidier posstregulators; tuenon, turnoff switching losses and snubbers, feedback-loop stabilization, resonant converters, waveforms,... and other contents.

350p dianmotminh03 03-06-2024 1 0   Download

Part 2 book "Mechanical design of electric motors" includes contents: Motor bearing, motor power losses, motor cooling, motor vibration and acoustic noise, motor testing, modeling, simulation, and analysis of electric motors, innovative and advanced motor design

394p dianmotminh01 17-05-2024 6 5   Download

Part 1 book "Electrical craft principles (Vol 2)" includes content: Capacitance and capacitors, inductance and inductors, magnetic materials and iron losses, alternating current theory, power in alternating current circuits, further electronics.

191p dianmotminh01 17-05-2024 11 5   Download

In the context of artificial restraining of tariffs for electricity transmission by the Russian state, the losses of grid organizations have increased and the question remains about the ownership of property built at the expense of consumers for technological connection to consumers' power grids.

8p longtimenosee10 26-04-2024 5 2   Download

Part 2 book "Switching power supply design" includes content: Bipolar power transistor base drive circuits, mosfet and igbt power transistors and gate drive requirements, magnetic amplifier postregulators, analysis of turn on and turn off switching losses and the design of load line shaping snubber circuits, feedback loop stabilization, resonant converters, typical waveforms for switching power supplies, power factor and power factor correction, electronic ballasts - high frequency power regulators for fluorescent lamps,... and other contents.

419p dianmotminh00 22-04-2024 6 3   Download

Part 1 book "Electric power distribution system engineering" includes content: Distribution system planning and automation, load characteristics, application of distribution transformers, design of subtransmission lines and distribution substations, design considerations of primary systems, design considerations of secondary systems, voltage drop and power loss calculations

393p dianmotminh00 22-04-2024 4 3   Download

This paper presents a model for estimating the losses of MOSFETs, thermal resistance of heat sink when incorporating the impact of cooling fans. Following this, a proposition is presented for the selection of appropriate heatsink and fan parameters.

9p vimichaelfaraday 28-12-2023 3 3   Download

This research introduces a novel approach to selecting and designing magnetic cores for DC power optimizers. Unlike traditional methods that depend on the Area Product (Ap) and involve extensive trial and error to achieve the final design, the proposed methodology utilizes two essential parameters: the Core to Copper Loss Ratio (γ) and the Window Utilization Factor (ku) for the inductor design process.

7p vimichaelfaraday 14-12-2023 10 6   Download

"Standard Test Method for Alternating-Current Magnetic Properties of Materials at Power Frequencies Using Wattmeter-Ammeter-Voltmeter Method and 25-cm Epstein Test Frame" covers tests for the magnetic properties of basic flat-rolled magnetic materials at power frequencies (25 to 400 Hz) using a 25-cm Epstein test frame and the 25-cm double-lap-jointed core. It covers the determination of core loss, rms exciting power, rms and peak exciting current, and several types of ac permeability and related properties of flat-rolled magnetic materials under ac magnetization.

17p hth_hn_vn 10-12-2023 10 4   Download

"Standard Test Method for Alternating Current Magnetic Properties of Materials Using the Wattmeter-Ammeter-Voltmeter Method, 100 to 10 000 Hz and 25-cm Epstein Frame" covers the determination of the magnetic properties of flat-rolled magnetic materials using Epstein test specimens with double-lap joints in the 25-cm Epstein frame. It covers determination of core loss, rms and peak exciting current, exciting power, magnetic field strength, and permeability.

11p hth_hn_vn 10-12-2023 6 4   Download

This specification covers the detailed requirements to which flat-rolled nonoriented fully processed electrical steel shall conform. This steel is produced to specified maximum core-loss values and is intended primarily for commercial power frequency (50 and 60 Hz) applications in magnetic devices. Desirable core-loss and permeability characteristics are developed during mill processing, so additional heat treatment by the user is usually not necessary

6p hth_hn_vn 10-12-2023 6 4   Download

This specification covers the detailed requirements to which flat-rolled, nonoriented semiprocessed electrical steel shall conform. This steel is produced to specified maximum core-loss values and is intended primarily for commercial power frequency (50 and 60 Hz) applications in magnetic devices. Desirable core-loss and permeability characteristics are developed through heat treatment by the user.

6p hth_hn_vn 10-12-2023 7 4   Download

This test method covers the determination of several ac magnetic properties of laminated cores made from flat-rolled magnetic materials. This test method covers test equipment and procedures for the determination of impedance permeability and exciting power from voltage and current measurements, and core loss from wattmeter measurements. These tests are made under conditions of sinusoidal flux.

11p hth_hn_vn 10-12-2023 12 5   Download

These test methods cover the determination of specific core loss and peak permeability of single layers of sheet-type specimens tested with normal excitation at a frequency of 50 or 60 Hz.

16p hth_hn_vn 10-12-2023 5 4   Download

In this paper, the control design for the grid-connected converter used as a part of the wind turbine generator is discussed. First, the three-phase T-type multilevel converter, which exhibits several advantages such as low total harmonic distortion, reduced voltage stress, and switching loss, is employed for the power stage. Second, finite control set model predictive control (FCS-MPC) is adopted to achieve a multi-objective optimization solution for the inner grid-connected current control loop.

8p vibranson 30-11-2023 5 5   Download

High efficiency and high power density are becoming increasingly popular in the design requirements of power electronic converters. In this paper, the design and optimization method of a three-phase T-type converter are discussed. Loss models of the converter are formulated by the conventional method.

7p vijeff 30-11-2023 9 3   Download

Continued part 1, part 2 of ebook "Electrical circuit theory and technology" provides readers with contents including: advanced circuit theory and technology; general reference; power in a.c. circuits; series resonance and Q-factor; mesh-current and nodal analysis; delta–star and star–delta transformations; maximum power transfer theorems and impedance matching; a numerical method of harmonic analysis; dielectrics and dielectric loss; magnetically coupled circuits; transients and laplace transforms;...

427p dangsovu 20-10-2023 6 3   Download

This paper proposes a mixed-integer linear programming (MILP) model aiming to optimize the topology of transmission networks considering power loss. The proposed MILP model is converted from the MINLP model using the piecewise linearization technique and precisely linearizing the product of the binary and continuous variables. The objective function of the TNEP problem in this study is to minimize the total cost of the power system, including the investment cost for new transmission lines, maintenance cost, cost related to energy losses loss, and production cost of generators.

9p giangnhanly 02-10-2023 3 3   Download