Ether technology creates free energy AC generator: The KINETIC Power System. AC Generator Secrets to Free Energy: The Field Torsion Relationship, AC GENERATORS; The truth about converting kinetic energy to electricity
✒️ Alternating Current (AC) induction motors - the basics
✒️ Brief introduction of AC Induction Motor for sale and its special application
✔️ AC Induction Motor for Sale
✔️ Special application of AC Induction Motor - hidden AC technology - Nikola Tesla's Ether Technology
✒️ AC Induction Motor - Knowledge from "Zero to Hero" (Full)
Alternating Current (AC) induction motors - the basics
The AC induction motor is a machine that operates by the rotating magnetic field generated by the windings on the stator. This rotating magnetic field causes the hidden conductor frames on the rotor to flow as a closed circuit, resulting in Faraday's electromagnetic induction, i.e., current in the conductors inside the variable magnetic field. Accordingly, the wire frame on the rotor rotates, resulting in the rotor having to rotate.
Basic structure of AC induction motor
In other words, it is the phenomenon of AC Electricity that produces a changing magnetic field, and then generates an electric current in the wire frame inside it, and the force generated by the phenomenon of electromagnetic induction as the basis for creating the wire frame repulsion. Conductor on Rotary rotor means that the rotor containing the conductor frame also rotates.
In technical terms, the AC induction motor is a technology that belongs to the "Rotating Magnetic Field" of Nikola Tesla, a genius in the field of invention. The "Rotating Magnetic Field" can be described visually and easily in a few small examples, but it's the technology that belongs to Tesla's secret, because it belongs to the lost physics, the Ether field physics.
Rotating Magnetic Field in AC Induction Motor
On the contrary, if there is an electric current inside a fixed magnetic field, electromagnetic induction still occurs. This idea will create a DC current induction motor. Then the structure of the machine needs more brushes to make point contact for the wire frames inside the rotor. DC Induction Motor will be discussed in another article, this article only focuses on AC Induction Motor.
Visual understanding of AC Induction Motor:
Brief introduction of AC Induction Motor for sale and its special application
AC Induction Motor for Sale:
AC Induction Motor for sale on the e-commerce market has no exclusivity. So you can find AC Induction Motor at an affordable price.
In addition to the usual application of AC Induction Motor, such as generating compressed kinetic energy in refrigerators, kinetic energy for cooling fan blades, electric cars, etc., AC Induction Motor also has other unique applications, belonging to about hidden AC technology. Summary of this hidden AC technology content:
🌀 Nikola Tesla's Ether Technology: 💠 Harnessing the power of back electromagnetic fields (Back EMF) 💠 Back EMF generates Lenz's Force in generator
💠 When the output energy is not affected by the Lenz (free) force, a self-powered mechanism will be established from the AC generator head to the induction motor. And the kinetic energy of the induction motor at that time was only supposed to stir the Ether by Nikola Tesla's "Rotating Magnetic Field". That's the mechanism for a Free Energy AC generator - no fuel needed - Self-powered generator.
AC Induction Motor - Knowledge from "Zero to Hero"
Asynchronous and synchronous motors are the two main groups of AC induction motors
AC Induction Motor: Asynchronous and synchronous motors
1/ Asynchronous AC Induction Motor
The induction motor is a common form of the asynchronous motor and is essentially an a.c. transformer with a rotating secondary winding. The primary winding (stator) is connected to the power supply and the secondary winding (rotor) carries the induced secondary current. Torque is generated by the action of the rotor current (secondary) on the magnetic flux. Synchronous motors vary greatly in their design and operating characteristics, and are considered a distinct type of induction motor.
1.1/ Calculation of parameters of AC induction motor
The induction motor is the simplest and most robust type of electric motor and consists of two basic electrical components: the surrounding stator windings and the rotating rotor assembly. The induction motor gets its name from the current flowing in the secondary unit (rotor) generated by the alternating current flowing in the primary unit (stator). The combined electromagnetic effects of the stator and rotor currents produce the force to produce rotation.
The rotor usually consists of a laminated cylindrical iron core with slots for receiving conductors. The most common type of rotor has die-cast aluminum conductors and short-circuited end rings. This “squirrel cage” rotates when a moving magnetic field induces an electric current in the conductors.
The speed at which the magnetic field rotates is the synchronous speed of the motor and is determined by the number of poles in the stator and the frequency of the power supply:
ns = 120f/p
Where: ns = synchronous speed, f = frequency, and p = number of pole pairs.
Synchronous speed is the absolute upper limit of motor speed. If the rotor rotates exactly as fast as the magnetic field rotates, then no force flow is interrupted by the rotor conductors, and the torque is now zero. In fact, the rotor always rotates slower than the magnetic field. The speed is just slow enough to cause current in the rotor to flow, so the resulting torque is sufficient to counteract wind and frictional resistance, and the load.
The speed difference between the rotor and the magnetic field, called slip, is expressed as a percentage of the synchronous speed:
s = 100 (ns – na)/ns
Where: s = slip, ns = synchronous speed and na = actual speed
1.2/ Multiphase Induction motor
The squirrel-cage multiphase motor is a constant-speed motor, but some degree of flexibility in operating characteristics results from tweaking the rotor design. These variations produce changes in torque, current, and full load speed. Evolution and standardization have created four basic types of engines.
A/ Design Type A and B
Universal motor with medium torque and starting current, and low slip. Fractional type multi-phase motors usually have design B. Due to the diminishing properties of design B, general-purpose motors produce the same (maximum) torque as single-phase motors, but cannot achieve get the torque and speed intersection moment like a single phase motor. Therefore, the maximum torque of a class B motor must be greater (minimum 140% of the maximum torque of a single-phase, general-purpose motor) for comparable full-load speeds.
B/ Design Type "C"
High starting torque with normal starting current and low slip. This design is typically used at high load starting, but typically runs at rated load and is not subject to high overload requirements once running speed is reached.
C/ Design type "D"
High slip, very high starting torque, low starting current and low full load speed. Due to the high slip, the speed may decrease when encountering fluctuating loads. This design is divided into different groups according to the slip or the shape of the torque and speed curves.
D/ Design Type F
This type has low starting torque, low starting current, low slip and is built for low rotor locking current. Both locking torque and peak torque are low. Usually used when starting torque is low and load is moderate after steady running speed is achieved.
1.3/ Motor with winding Roto
Squirrel-cage rotor motors typically have inflexible torque and speed characteristics, but a special version of the wound-rotor motor has controllable speed and torque. Its application is markedly different from that of the squirrel-cage rotor motor because of the controllability of the rotor circuit. The performance characteristics can be changed by adding different resistance values in the rotor circuit.
Winding rotor motors are often added to the secondary resistance in the rotor circuit. The impedance is gradually reduced to allow the motor to accelerate. As a result, the motor can output significant torque while limiting the locked rotor current. This secondary resistor can be designed to dissipate heat generated by continuous operation at deceleration, frequent acceleration, or acceleration with high inertia loads. The external impedance produces a large drop in rpm when there is a small change in load. The deceleration speed drops to about 50% of the rated speed, but the efficiency is quite low.
1.4/ Multi-speed motor
Multi-pole motors are designed to run at one speed. By physically connecting the connectors, a 2:1 speed ratio can be achieved. Typical synchronous speeds for a 60 Hz motor are: 3,600/1,800 rpm (2/4 pole), 1,800/900 rpm (4/8 pole), and 1,200/600 rpm (6/12 pole).
Two-winding motors have two separate windings that can be wound for any number of poles so that different speed ratios can be achieved. However, a ratio greater than 4:1 is impractical because of the size and weight of the engine. Single-phase multi-speed motors usually have variable torque designs, but motors with constant torque and power are also commercially available.
The output power of the multi-speed motor can be adjusted with different speeds. These motors are designed with horsepower output according to one of the following load characteristics.
Variable Torque: A motor whose torque is proportional to the square of the speed. For example, the 1800/900 rpm engine, which produces 10 hp at 1800 rpm, produces 2.5 hp at 900 rpm. Depending on the load, e.g. centrifugal pumps, fans and blowers, there is a torque requirement that varies with the square or the triple power of speed.
Fixed torque: These motors can produce the same torque at multiple speeds, so the power output varies directly with the speed. For example, an engine that produces 10 hp at 1800 rpm, produces 5 hp at 900 rpm. These motors are used in applications where constant torque is required such as mixers, conveyors and compressors.
Fixed power: These motors produce the same horsepower at each speed, and torque is inversely proportional to speed. Typical applications include machine tools such as drills, lathes, and milling machines.
1.5/ Single phase AC Induction Motor
Single-phase induction motors are typically small-power types, available in the lower horsepower range. The most common types of small-sized motors are phase difference, capacitor starter, permanent decoupling capacitor, and ball pole.
Motors come in a variety of speeds, but there is a practical limit to the number of speeds achieved. Two, three and four-speed motors are available, and speed selection can be made by means of reverse polarity or two-winding winding methods.
Single-phase motors run in the direction of rotation in which they are started, and they are started in a predetermined direction according to the electrical connections, or mechanical settings of the starting vehicle. Universal motors can be operated in either direction, but the standard rotation is counterclockwise when facing the opposite direction to the drive shaft. The motor can be reconnected to reverse the direction of rotation.
Universal motor:
General purpose motors operate with roughly equivalent efficiency with either 60 Hz direct current or alternating current. It differs from the DC motor series because of the winding ratio and thinner iron layers. A general-purpose motor can operate on DC current with essentially the same efficiency, but with less speed and brush life than a basic DC motor.
An important feature of the general-purpose motor is that it has the highest horsepower-per-pound ratio of any AC Induction motor because it can operate at several times higher speeds than any other motor. 60 Hz any other.
When operating at no-load, general-purpose motors tend to run at full capacity, the speed is limited only by wind, friction and power reversal. Therefore, large general-purpose motors are almost always connected directly to the load to limit the speed. On hand tools such as power saws, the load restrained by the gears, bearings and cooling fan is sufficient to keep the idling speed to a safe value.
With a general-purpose motor, speed control is simple, since motor speed is sensitive to both voltage and flux changes. With a rheostat or auto-tuner, the motor speed can be easily changed from full speed to zero.
2/ Synchronous AC Induction motor
Synchronous AC Induction motors are inherently constant speed motors and they operate in absolute synchronism with line frequency. For squirrel cage induction motors, the speed is determined by the number of pole pairs and is always proportional to the line frequency.
Synchronous motors come in a variety of sizes, from small power self-excited units to large capacity DC exciter motors for industrial drives. In the small power range, synchronous motors are used mainly when precise constant speed is required.
In motors of large size and horsepower applied to industrial loads, synchronous motors serve two important functions. First, it is a highly efficient method to convert energy from alternating current into mechanical energy. Second, it can operate at leading or unified power factor, thus providing power factor correction.
There are two main types of synchronous motors: non-excited and DC-excited.
The unexcited motor is generated by a reluctance and hysteresis design. These motors use a self-starting circuit and do not require an external excitation supply.
DC current excitation motors are larger than 1 hp and require a strong enough DC current to overcome the slip rings to generate excitation. Direct current can be supplied from a separate source or from a d.c. generator directly connected to the motor shaft.
Starting a synchronous AC Induction motor:
Single-phase or multi-phase synchronous AC Induction motors cannot be started without being driven, or connected to their rotors as self-starting circuits. Since the electromagnetic field rotates at synchronous speed, the motor must be accelerated before it can pull in synchronously. Accelerate from 0 speed until synchronous is achieved. Therefore, separate startup methods must be used.
For designs with self-starting circuits, the “fhp” size uses the starting methods common to induction motors (separated phase, capacitor starting, push starter and shaded pole). The electrical characteristics of these motors cause them to automatically switch to synchronous operation.
Although DC magnetic-excited motors have a squirrel cage for starting, known as a regulating coil, the starting torque is inherently low and the demand for DC power requires a starting system to provide dynamic protection. full motor at start-up, apply DC field excitation at the appropriate time, eliminate field excitation as the rotor pulls out (maximum torque), and protect the squirrel-cage windings against thermal damage during step deviation.
Pull-up torque is the smallest torque developed from stop to pull-in. This torque shall be greater than the load torque by a sufficient margin to maintain a satisfactory acceleration rate under normal voltage conditions.
The drag torque is the result of the sali direction (preferred direction of magnetization) of the rotor pole pieces and pulses at sub-synchronous speed. It also has an effect on the motor's pull-in and pull-out torques because the unexcited floating-pole rotor tends to self-regulate with the stator magnetic field to maintain minimal reluctance. This reluctance torque can be sufficient to pull in a synchronous light load system, with low inertia and to output approximately 30% pull-out torque.
Synchronous torque is the torque developed after excitation and represents the total steady-state torque available for transmission. It peaks at approximately 70° lagging of the rotor behind the stator rotating magnetic field. This maximum value is actually the pull-out torque value.
Pull-out torque is the maximum sustained torque force produced by the motor at synchronous speed for one minute with rated frequency and normal excitation. Typical pull-out torque is typically 150% of full-load torque for uniform power factor motors and 175% to 200% for 0.8 power factor motors.
The pull-in torque of an asynchronous motor is the torque it produces when an inertial load is pulled into synchronous when excitation is applied. The pull-in torque is developed during the transition from slip speed to synchronous speed, when the motor changes from induced to synchronous operation. This is usually the most important stage in the starting process of a synchronous motor. The torque generated by the damper coil and the field coil returns to zero at synchronous speed. Therefore, at the point of pull-in, only the damping and synchronous torques due to excitation of the field windings are effective.
3/ Timing motor
The timing motor is rated for less than 1/10 horsepower and is used as the main motor for timing devices. Since the motor is used as a timer, it must run at a constant speed.
AC and DC motors can be used as timing motors. DC timing motors are used for mobile applications or where high and low speed variations are required. Its advantages include starting torque ten times higher than running torque, efficiency between 50 and 70%, and relatively easy speed control. But some form of governor, mechanical or electronic, is required.
AC timing motors use readily available power, cost less, last longer and produce no “RFI”. However, AC induction motors cannot be easily adapted to mobile applications, have relatively low starting torques and are much less efficient than DC motors.
4/ AC Servo motor
AC servo motors are used in AC and computer servo mechanisms that require fast and accurate response characteristics. To obtain these characteristics, the servo motor has a low-diameter, high-resistance rotor. The small diameter provides low inertia for quick starting, stopping and reversing, while the high drag provides a near-linear torque and speed relationship for precise control.
Servo motors are wound in two physical phases at right angles or perpendicular to space. The fixed or reference winding is excited from a fixed voltage source, while the control coil is excited by an adjustable or variable control voltage, usually from a servo amplifier. The coils are usually designed with the same voltage-turn ratio, so as to balance the maximum fixed phase power inputs and the peak control phase signal.
VEVOR Single Phase 5HP Asynchronous Electric Induction Motor 3450RPM AC Current 208V-230V Rigid Mounting ODP for Air Compressor
In an ideal servo motor, the torque at any speed is proportional to the control winding voltage. In practice, however, this relationship exists only at zero speed due to the inability of induction motors to respond to changes in input voltage under light load conditions.
The inherent damping properties of servo motors decrease as power increases, and the motor has moderate efficiency when linearly decreasing speed-torque. Most larger motors have a built-in auxiliary blower to maintain temperatures within a safe operating range. Servo motors are available in wattages from less than 1 to 750 W, in sizes from 0.5 to 7 inches outside diameter. Most designs are available with modular or pre-assembled heads.
