More difficult aspects of electric motor manufacturers in india
A rotary and linear motion device includes a magnetic stator assembly, opposed electromagnetic actuators, and a linear-to-rotary converter (e.g., cam). Each electromagnetic actuator includes a coil that is configured to reciprocate relative to the magnetic stator assembly or to linearly translate in a common direction relative to the magnetic stator assembly. The electromagnetic actuators are coupled to the linear-to-rotary converter and upon reciprocation or linear translation, drive the linear-to-rotary converter in rotary or linear motion. The device may be located inside a wheel, which may be part of a vehicle. If part of a wheel of a vehicle, the device can be used to provide propulsion, steering, braking, and suspension for the vehicle.
Industrial Power Engineering And Applications Handbook (ISBN 0- 7506- 7351- 6) is the original version of the Electrical Engineering Handbook that was first published by Elsevier Science, USA under the flagship of Newnes Power Engineering Series, UK (through Butterworth Heinemann, UK).This is adjudged to be a unique and rare Handbook of its kind. Elsevier Sciece themselves have remarked for this book as 'Never before has so much ground being covered in a single volume reference resource. This book is sure to be great value to students, technicians and practising engineers as well as equipment designers and manufacturers, and should become their one-stop for all information needs in this subject area.
In various embodiments, a phase current sampling apparatus ( 300, 600 , FIGS. 3, 6 ), an electric motor drive system ( 100 , FIG. 1 ), and a motor vehicle ( 1200 , FIG. 12 ) include switching circuitry adapted to receive first and second phase current waveforms. The switching circuitry provides the first phase current waveform during at least two offset sampling instants, and provides the second phase current waveform during a reference sampling instant.electric motor manufacturers in india An analog-to-digital converter is adapted to sample the first phase current waveform at the offset sampling instants, and to sample the second phase current waveform at the reference sampling instant. An embodiment of a method for regulating phase current waveforms includes an analog-to-digital converter generating samples of a first phase current waveform at sampling instants that occur before and after a reference sampling instant, More difficult aspects of electric motor manufacturers in india and generating a sample of a second phase current waveform at the reference sampling instant.
With the ever-increasing pressure on electric motor manufacturers in india to develop smaller and more efficient electric motors, there is a need for more thermal analysis in parallel with the traditional electromagnetic design. Attention to the thermal design can be rewarded by major improvements in the overall performance. Technical papers published to date highlight a number of thermal design issues that are difficult to analyze. This paper reviews some of these issues and gives advice on how to deal with them when developing algorithms for inclusion in design software.
A method of producing a busbar structure includes a busbar arranging step for arranging a plurality of the busbars at predetermined positions in a cavity which is formed between a fixed mold and a movable mold which can be clamped and opened with respect to the fixed mold, and clamping the two molds, a resin filling step for filling molten resin into the cavity in which the busbars have been arranged, and a busbar fixing step for hardening the molten resin which has been filled thereby to fix the busbars at predetermined positions with the hardened resin, and opening the two molds. Interposed pins to be interposed between the busbars which are arranged in close proximity to each other are detachably disposed in an engaged part of the movable mold, and removed from a molded product when the two molds are opened.
An electric motor includes a stator and a rotor disposed surrounding the stator and being rotatable around the stator. The rotor has a plurality of permanent magnets each of which is movable in a radial direction of the rotor. The radially outward movement of the permanent magnets is urged by centrifugal force caused by the rotation of the rotor.
For molecules to be used as components in molecular machines, methods that couple individual molecules to external energy sources and that selectively excite motion in a given direction are required. Significant progress has been made in the construction of molecular motors powered by light and by chemical reactions, but electrically driven motors have not yet been built, despite several theoretical proposals for such motors. Here we report that a butyl methyl sulphide molecule adsorbed on a copper surface can be operated as a single-molecule electric motor. Electrons from a scanning tunnelling microscope are used to drive the more difficult aspects of electric motor manufacturers in india directional motion of the molecule in a two-terminal setup. Moreover, the temperature and electron flux can be adjusted to allow each rotational event to be monitored at the molecular scale in real time. The direction and rate of the rotation are related to the chiralities of both the molecule and the tip of the microscope (which serves as the electrode), illustrating the importance of the symmetry of the metal contacts in atomic-scale electrical devices.
This paper addresses the limits of market forces as the exclusive driving force for energy efficiency. The electric motor market in France is analysed, with particular emphasis on the structure and functioning of the market, as well as the decision-making practices of the main agents. The study shows that market forces are constrained by the variety of transaction types and by the decision-making practices of agents, in an environment characterised by lack of information and split incentives for adopting energy-efficient technological options. The paper argues that public intervention is a necessary condition for organising the market and promoting energy efficiency. The article points out the main obstacles to the diffusion of efficient electric motor technologies and suggests some initiatives for market transformation.
Turbocharging and subsequent charge cooling of the working medium usually causes increase of the mean effective pressure in an automotive diesel engine. Poor performance during the engine load increase is attributed to the nature of energy exchange between the engine and the turbocharger. Filling of the intake and exhaust manifolds, as well as consequent increase of the pressure and acceleration of the rotating components of the turbocharger require a certain period of time. Dynamic performance of the turbocharger can be substantially improved by means of an electric motor attached directly to the turbo shaft more difficult aspects of electric motor manufacturers in india. A new concept of asynchronous electric motor with a very thin rotor was applied to support the turbocharger during electric motor manufacturers in india the transient operation of the engine. The experimental work of matching an electrically assisted turbocharger to an engine is rather expensive; it was therefore decided to determine general characteristic of the electric motor separately through experiments,
In the make-to-order (MTO) manufacturing environment, one of the important issues is setting attainable delivery dates for customer orders, which significantly affects the performance of the MTO manufacturing. Although this topic has received considerable attention in the literature, most of the efforts took a lower level approach that is concerned primarily with the effect of various delivery date assignment methods on the relative performance of some dispatching rules. This paper proposes the delivery date decision support system which takes a higher level approach of integrating the marketing and production planning functions with the consideration of the current capacity and workload smoothing.
In order to fulfil the latest EU emission standards, the average amount of CO2 emissions for each vehicle sold has to be reduced to avoid fines for manufacturers. One of the simplest and cheapest ways of hybridization is the belt starter generator (BSG), which makes it suitable for an entry-level range of vehicles. This paper presents a software strategy developed for internal combustion engine (ICE) and belt starter generator (BSG) control on a vehicle equipped with automated manual transmission and also the drivability, comfort and emission performances improvements expected by using this strategy.
Since 2018,Turntide Technologies'highly efficient electric motors—based on an updated version of an early 19th century design—have turned cooling fans in dairy barns across the United States;in addition,more than a dozen companies,including BMW and Amazon,have saved an estimated average of 64%on heating and cooling costs by retrofitting their rooftop heating,ventilation,and air conditioning(HVAC)systems with the company's"smart motor system"[1].Now,as announced in June and July 2021[1,2],the Sunnyvale,CA,USA-based company,backed by Bill Gates and Amazon,is shifting its focus to electric vehicles(EVs)after securing 225 million USD in funding and acquiring three startup firms—Hyperdrive Innovation,BorgWarner Gateshead,and Avid Technology—that make batteries,drivetrains,and EV controls,respectively.
In this study, robust control methods are employed to control the permanent magnet synchronous motor. Features such as good performance despite the vehicle's load torque disturbance, measurement noise, system parameter changes and high-frequency uncertainties of structured and unstructured types make this approach more effective. The control objective is controlling and maintaining the vehicle speed and motor torque in driver's desired references. In this study, a controller and electric motor manufacturers in india a reduced order controller are designed for the first time due to simplicity and easy implementation of the optimal controller. Simulation studies are carried out in this study to evaluate the control performance of the designed control systems. Comparison studies show that the proposed controllers have several advantages compared to the proportional ntegral erivative controller including reference speed and torque tracking, mean square error, disturbance rejection and noise attenuation.
With the ever-increasing pressure on electric motor manufacturers to develop smaller and more efficient electric motors, there is a need for more thermal analysis in parallel with the traditional electromagnetic design. Attention to the thermal design can be rewarded by major improvements in the overall performance. Technical papers published to date highlight a number of thermal design issues that are difficult to analyze. This paper reviews some of these issues and gives advice on how to deal with them when developing algorithms for inclusion in design software.
A comprehensive review of the state of the art in the field of electric motor drives and control strategies is presented. It is pointed out that drive technology has seen impressive growth during the last three decades. Recent advances in semiconductor power electronics and microelectronics have made is possible to use AC motors in many variable-speed drive applications. Implementation of new control techniques, such as field-oriented control and variable-structure control with sliding-mode features, has made AC motors a viable alternative to DC motors in high-performance drive applications.
Electric motor-driven system (EMDS) accounts for more than 40% of global electricity consumption. This paper sets out an ambitious but achievable target with the global work plan to improve the energy efficiency of EMDS by 10% to 15% based on findings from the working paper 'Energy Efficiency Policy Opportunities for Electric Motor-Driven System (Waide et al., 2011)'. If governments commit to the proposed work plan immediately, and maintain resourcing levels, the target could be achieved by 2030 and would be equivalent to reducing total global electricity use by around 5% more difficult aspects of electric motor manufacturers in india. The proposed work plan of this paper is to align regulatory settings within a globally applicable scheme. The IEA believes its target can only be achieved through global co-operation leading to aligned national policy settings.
The book develops a systematic approach to motor drives. While the emphasis is on practice; extensive modeling, simulation and analysis is developed to assist readers in their understanding of the subject matter from fundamental principles. Also, each motor drive is illustrated with an industrial application in detail at the end of chapters to enable readers to relate theory to practice.
A motor includes a stator, a rotor supported by a rotor hub for rotation relative to the stator, and a housing fixedly supporting the stator. The housing rotatably supports the rotor and includes a first end enclosing the stator, the rotor, and the rotor hub and a second end exposing the stator, the rotor, and the rotor hub to define an opening between the rotor and within the rotor hub.
A conductive connecting member is connected to electric wire with insulating coating by a fusing process so that electric continuity therebetween is ensured. The conductive connecting member includes a connecting section and a groove portion. The connecting section is formed by being bent so as to have an inner surface including a bottom surface and both side surfaces to be bonded to the electric wire. The groove portion is formed in the inner surface of the connecting section. The groove portion has a longitudinal groove extending in a direction of the inner surface intersecting with a longitudinal direction of the electric wire. The groove portion is positioned substantially at a center of the longitudinal direction of the electric wire. The groove portion may further have an inclined groove obliquely extending from the longitudinal groove or a transverse groove extending substantially perpendicular to the longitudinal groove.
An oilfield pump employing a linear electric motor. The linear electric motor replaces a conventional crankshaft or hydraulic techniques for driving a plunger of the pump. This may reduce the number of equipment parts and amount of maintenance expenses associated with the operation of oilfield pumps. Furthermore, the use of a linear electric motor may also increase the precision and control over the fluid delivery provided by the pump assembly.
An electric motor for an automobile is herein introduced as a power source which does not require gas or any other fuel of any kind; nor does it require solar power, batteries, nor fuel cells for its operation. The vehicle will be powered by the dynamics of the physical dynamics of the electromagnetic forces of momentum. This novel idea drastically alters the perception of the automobile with its internal combustion engine, need for a radiator, muffler, anti-freeze, etc. In fact, this vehicle does not have what is usually thought of as an "engine." It operates under the dynamics of physical laws of electromagnetic force for mechanical propulsion and strength of torque for horsepower. Otherwise, it operates in the same conventional manner as does the typical passenger automobile. Moreover, this novel idea addresses the adverse effects of air pollution upon human health, environmental ecology, global oil depletion, and protracted monetary expense.
A hydraulic motor system for improved frequency response includes a hydraulic variator having a pump and a motor, wherein the pump includes a variable angle swash plate, and the system further includes an electric actuator for controlling an angle or torque of the swash plate, thereby controlling the motor output characteristics. The electric actuator for controlling the variable angle swash plate may comprise a linear electric motor, ball screw drive or a rotary electric motor. In an example, the rotary electric motor tilts the swash plate by applying a torque to the swash plate at a point away from its tilt axis. In a further example, the rotary electric motor tilts the swash plate via a worm drive or ball screw drive.
The invention relates to an immersed electric motor with a rotor, a stator with pole shoes, and a plastic casing positioned between the rotor and stator. According to the invention, filler pieces are positioned between the pole shoes in such a way that the filler pieces are in contact with one another forming a closed bore that serves as a support for the plastic casing.
Cooling systems and methods are provided for an integrated electric motor-inverter, where the integrated electric motor-inverter includes a housing, a motor, and an inverter, the motor and more difficult aspects of electric motor manufacturers in india the inverter are disposed within the housing, and the motor includes a stator. The system includes a cooling jacket, a first coolant, a condenser, a spray head, and a second coolant. The cooling jacket is disposed concentric to the stator and includes an inner wall and an outer wall. The inner wall is in direct contact with the stator. The first coolant is disposed between the cooling jacket inner and outer walls. The condenser is disposed concentric to the cooling jacket. The spray head is disposed adjacent the inverter. The second coolant is in flow communication with the spray head.
A device such as an electric motor, an electric generator, or a regenerative electric motor includes a rotor arrangement and a stator arrangement. The stator arrangement has a dielectric electromagnet housing and at least one energizable electromagnet assembly including an overall amorphous metal magnetic core. The overall amorphous metal magnetic core is made up of a plurality of individually formed amorphous metal core pieces. The dielectric electromagnet housing has core piece openings formed into the electromagnet housing for holding the individually formed amorphous metal core pieces in positions adjacent to one another so as to form the overall amorphous metal magnetic core. The device further includes a control arrangement that is able to variably control the activation and deactivation of the electromagnet using any combination of a plurality of activation and deactivation parameters in order to control the speed, efficiency, torque, and power of the device.
A power supply for an electric motor includes a converter that can increase and decrease a voltage supplied into an inverter and then into the stator windings of the motor. As a separate feature, the inverter includes a control coil which is positioned within a motor housing such that it may be cooled by a thermal management system for the motor.
An electric motor for a fuel pump is provided with a shutdown switch positioned intermediate an inverter, and its control coil. In this location, the shutdown function can be achieved without heavy components. In another feature, when the fuel pump is shut down, a signal is sent upstream to a voltage regulator associated with a generator, such that the voltage supplied downstream by the generator can be reduced to eliminate any potential voltage spike due to the shutdown of the electric motor. The electric motor with shutdown switch enables low weight fault tolerant flux regulated machines.
