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The use of rotor geometry as a specification in the control of generator voltage and flux density harmonics is studied. The possibility of generating a specific voltage waveform at the load with only a three-phase rectifier between the AC generator and the load is investigated. The armature reaction MMF is expressed as an infinite set of traveling waves with an infinite set of velocities. It is shown that the rotor MMF cannot cancel armature reaction everywhere because the rotor MMF has only the velocity of the rotor. The MMFs present at all the stator slots of an armature coil group are reflected into a single slot in an attempt to control the air gap flux density harmonics be selectively positioning increments of rotor reluctance. This method fails because a general solution for the reflected flux densities could not be obtained. Specifying the air gap reluctance incrementally as the rotor moves under successive stator slots is also tried as a means of harmonic control. This method proves unworkable due to negative MMF requirements and conflicting geometry specifications. Finite Element analysis is introduced as a computer aid to the design of a magnetic structure. Recommendations for further study are included. (Author)

This paper proposes a new radial basis function neural network maximum power point tracking controller based on a differential evolution algorithm for machine side converter of permanent magnet synchronous generator wind turbine under variable wind speed. Direct axis stator current control methods of permanent magnet synchronous machine are reviewed shortly. A combined radial basis function neural network-based network maximum power point tracking method and d axis stator current control techniques including zero d axis stator current, unity power factor, and constant stator flux-linkage have been implemented to control the machine side converter of permanent magnet synchronous generator wind turbine. The dynamic performance of the proposed approach is assessed under different operating conditions through a simulation model based on MATLAB. It has been seen that the radial basis function neural network controller can not only track well the maximum power point but also can be reduced costly.

The use of rotor geometry as a specification in the control of generator voltage and flux density harmonics is studied. The possibility of generating a specific voltage waveform at the load with only a three-phase rectifier between the AC generator and the load is investigated. The armature reaction MMF is expressed as an infinite set of traveling waves with an infinite set of velocities. It is shown that the rotor MMF cannot cancel armature reaction everywhere because the rotor MMF has only the velocity of the rotor. The MMFs present at all the stator slots of an armature coil group are reflected into a single slot in an attempt to control the air gap flux density harmonics be selectively positioning increments of rotor reluctance. This method fails because a general solution for the reflected flux densities could not be obtained. Specifying the air gap reluctance incrementally as the rotor moves under successive stator slots is also tried as a means of harmonic control. This method proves unworkable due to negative MMF requirements and conflicting geometry specifications. Finite Element analysis is introduced as a computer aid to the design of a magnetic structure. Recommendations for further study are included. (Author)

The use of rotor geometry as a specification in the control of generator voltage and flux density harmonics is studied. The possibility of generating a specific voltage waveform at the load with only a three-phase rectifier between the AC generator and the load is investigated. The armature reaction MMF is expressed as an infinite set of traveling waves with an infinite set of velocities. It is shown that the rotor MMF cannot cancel armature reaction everywhere because the rotor MMF has only the velocity of the rotor. The MMFs present at all the stator slots of an armature coil group are reflected into a single slot in an attempt to control the air gap flux density harmonics be selectively positioning increments of rotor reluctance. This method fails because a general solution for the reflected flux densities could not be obtained. Specifying the air gap reluctance incrementally as the rotor moves under successive stator slots is also tried as a means of harmonic control. This method proves unworkable due to negative MMF requirements and conflicting geometry specifications. Finite Element analysis is introduced as a computer aid to the design of a magnetic structure. Recommendations for further study are included. (Author)

Laboratory

VARIOUS ASPECTS OF WIND POWERED SYNCHRONOUS GENERATORS ARE DESCRIBED. THE INFLUENCE OF THE FAN WHEEL CHARACTERISTIC ON DAMPING OF TRANSIENTS IS SLIGHT. ALTERING VANE POSITION IS THE ONLY FEASIBLE METHOD FOR REGULATING POWER IN ORDER TO AVOID OVERLOADING THE GENERATOR. IN DESIGNING THE FAN WHEEL, AND CHOOSING THE NUMBER OF VANES, THE OPERATING BEHAVIOR OF THE GENERATOR AND THE DANGER OF RESONANCE MUST BE CONSIDERED AHEAD OF EFFICIENCY. PRACTICAL OPERATING CHARACTERISTICS OF THE FAN WHEEL MUST BE KNOWN TO THE ELECTRICAL ENGINEER IF HE IS TO CALCULATE THE COURSE OF EVENTS DURING A TRANSIENT.

The use of rotor geometry as a specification in the control of generator voltage and flux density harmonics is studied. The possibility of generating a specific voltage waveform at the load with only a three-phase rectifier between the AC generator and the load is investigated. The armature reaction MMF is expressed as an infinite set of traveling waves with an infinite set of velocities. It is shown that the rotor MMF cannot cancel armature reaction everywhere because the rotor MMF has only the velocity of the rotor. The MMFs present at all the stator slots of an armature coil group are reflected into a single slot in an attempt to control the air gap flux density harmonics be selectively positioning increments of rotor reluctance. This method fails because a general solution for the reflected flux densities could not be obtained. Specifying the air gap reluctance incrementally as the rotor moves under successive stator slots is also tried as a means of harmonic control. This method proves unworkable due to negative MMF requirements and conflicting geometry specifications. Finite Element analysis is introduced as a computer aid to the design of a magnetic structure. Recommendations for further study are included. (Author)

Because of its simplicity and autonomous operation, droop control technique is widely implemented for power generation control in microgrids. Despite its popularity, it has been reported that the technique has the stability problem. In this paper, the previous work of droop-free inverter-based generator designed for operating in a fix frequency islanded microgrid, is redesigned to have the ability to operate in both islanded and grid connected microgrid as well as to the main power grid where it interconnected with synchronous generators. The proposed voltage source inverters use phase locked loop (PLL) algorithm to synchronize the changing frequency due to the operation of the synchronous generator. Unlike the frequency droop control that the output frequency is varied as its active power changed, the proposed controls do not make an adjustment of the system frequency. This kind of operation reduces the chance of the system unstable due to severe frequency change and it also reduces the frequency deviation when it increases its active power output. Simulation and result of the meshed power network demonstrate the feasibility to implement the proposed controls in the real system.

In order to construct a digital magnetic inductor generator , the first thing that must be done is to select the topology of the machine. There are many different topologies that can be used for this type of generator, but the most common one is the permanent magnet synchronous generator (PMSG). This type of generator is typically used in small-scale applications due to its simple construction and low cost. The main advantage of using a PMSG is that it can be easily impedance matched to the load, which is important in order to maximize power transfer. Another advantage of this type of generator is that it is relatively easy to control. However, one disadvantage of PMSGs is that they are not as efficient as other types of generators. A digital magnetic inductor generator, or DMIG, is a modern day magnetic generator that generates free energy based on a rotating magnetic field. It is a self-running device that produces its own electricity, using magnets to create a perpetual motion-like effect. This type of magnet generator can be used to power homes and businesses, providing an environmentally friendly and sustainable source of energy. DMIGs are relatively easy to build, and there are many DIY plans available online. With some basic materials and a little know-how, anyone can construct their own DMIG. These generators can be used to supplement or replace traditional forms of energy generation, such as fossil fuels. Learn more: Magnet Generator DIY Digital magnetic inductor generators are an exciting new technology with the potential to change the way we power our homes and businesses. Plan to create a free energy generator with equal or much better power than the Digital Magnetic Inducer Generator: Top Magnetic Generator

The use of rotor geometry as a specification in the control of generator voltage and flux density harmonics is studied. The possibility of generating a specific voltage waveform at the load with only a three-phase rectifier between the AC generator and the load is investigated. The armature reaction MMF is expressed as an infinite set of traveling waves with an infinite set of velocities. It is shown that the rotor MMF cannot cancel armature reaction everywhere because the rotor MMF has only the velocity of the rotor. The MMFs present at all the stator slots of an armature coil group are reflected into a single slot in an attempt to control the air gap flux density harmonics be selectively positioning increments of rotor reluctance. This method fails because a general solution for the reflected flux densities could not be obtained. Specifying the air gap reluctance incrementally as the rotor moves under successive stator slots is also tried as a means of harmonic control. This method proves unworkable due to negative MMF requirements and conflicting geometry specifications. Finite Element analysis is introduced as a computer aid to the design of a magnetic structure. Recommendations for further study are included. (Author)

Document number CIA-RDP81-01036R000100060042-9 declassified and released through the CIA's CREST database. Previously available only on four computers located outside of Washington D.C., the Agency was successfully pressured into putting the files online as a result of a MuckRock lawsuit and the efforts of Emma Best. The metadata was collected by Data.World, and the files are now being archived and made text searchable by the Internet Archive.

The use of rotor geometry as a specification in the control of generator voltage and flux density harmonics is studied. The possibility of generating a specific voltage waveform at the load with only a three-phase rectifier between the AC generator and the load is investigated. The armature reaction MMF is expressed as an infinite set of traveling waves with an infinite set of velocities. It is shown that the rotor MMF cannot cancel armature reaction everywhere because the rotor MMF has only the velocity of the rotor. The MMFs present at all the stator slots of an armature coil group are reflected into a single slot in an attempt to control the air gap flux density harmonics be selectively positioning increments of rotor reluctance. This method fails because a general solution for the reflected flux densities could not be obtained. Specifying the air gap reluctance incrementally as the rotor moves under successive stator slots is also tried as a means of harmonic control. This method proves unworkable due to negative MMF requirements and conflicting geometry specifications. Finite Element analysis is introduced as a computer aid to the design of a magnetic structure. Recommendations for further study are included. (Author)

Westinghouse - Vertical Waterwheel Synchronous Generators OCR

The use of rotor geometry as a specification in the control of generator voltage and flux density harmonics is studied. The possibility of generating a specific voltage waveform at the load with only a three-phase rectifier between the AC generator and the load is investigated. The armature reaction MMF is expressed as an infinite set of traveling waves with an infinite set of velocities. It is shown that the rotor MMF cannot cancel armature reaction everywhere because the rotor MMF has only the velocity of the rotor. The MMFs present at all the stator slots of an armature coil group are reflected into a single slot in an attempt to control the air gap flux density harmonics be selectively positioning increments of rotor reluctance. This method fails because a general solution for the reflected flux densities could not be obtained. Specifying the air gap reluctance incrementally as the rotor moves under successive stator slots is also tried as a means of harmonic control. This method proves unworkable due to negative MMF requirements and conflicting geometry specifications. Finite Element analysis is introduced as a computer aid to the design of a magnetic structure. Recommendations for further study are included. (Author)

The use of rotor geometry as a specification in the control of generator voltage and flux density harmonics is studied. The possibility of generating a specific voltage waveform at the load with only a three-phase rectifier between the AC generator and the load is investigated. The armature reaction MMF is expressed as an infinite set of traveling waves with an infinite set of velocities. It is shown that the rotor MMF cannot cancel armature reaction everywhere because the rotor MMF has only the velocity of the rotor. The MMFs present at all the stator slots of an armature coil group are reflected into a single slot in an attempt to control the air gap flux density harmonics be selectively positioning increments of rotor reluctance. This method fails because a general solution for the reflected flux densities could not be obtained. Specifying the air gap reluctance incrementally as the rotor moves under successive stator slots is also tried as a means of harmonic control. This method proves unworkable due to negative MMF requirements and conflicting geometry specifications. Finite Element analysis is introduced as a computer aid to the design of a magnetic structure. Recommendations for further study are included. (Author)

This paper describes a new methodology for the modeling and analysis of three-phase synchronous generators operating under an unbalanced regime. For this, an improved state model has been developed in order to determine significant signatures on stator and rotor electromagnetic quantities. This methodology is characterized by some advantages. Firstly, it can be generalized for the modeling of severe defects like open-phase and short circuits. Furthermore, by comparison to classical approaches based on the finite elements and symmetrical components methods, this approach gives a good compromise between precision and simulation time. The obtained results show the effectiveness of this approach for the analysis of unbalanced synchronous generators.

THE DAMPED EIGEN OSCILLATION OF A SYNCHRONOUS GENERATOR CONNECTED WITH A FIXED NETWORK IS INVESTIGATED. IT IS ASSUMED THAT THE GENERATOR IS DRIVEN BY A WIND PROPELLER WHEEL. THE INFLUENCE OF THE VARIATION OF THE CHARACTERISTIC OF THE PROPELLER WHEEL ON THE VARIATION OF THE TRANSIENT OSCILLATORY BEHAVIOR IS INVESTIGATED. FIRST THE WIND VELOCITY INCREASE OCCURS SUDDENLY AND THEN IN A CONTINUOUS FASHION. THE POWER CONTROL MEASURES INCLUDING PROPELLER PITCH DISPLACEMENT ARE INVESTIGATED FOR PREVENTING OVERLOADS ON THE GENERATOR. THE DANGER OF RESONANCE IS POINTED OUT. THIS DEPENDS ON THE NUMBER OF PROPELLERS. THE QUESTION IS DISCUSSED OF WHETHER IT IS BETTER TO USE AN ASYNCHRONOUS GENERATOR INSTEAD OF A SYNCHRONOUS GENERATOR.

Synchronous Generators Handbook  Ion Boldea

Approved For ReIe4 CENTRAL INTELLIGENCE AGENCY INFORMATION REPORT COUNTRY Germany (Soviet 7one) SUBJECT Elektroapparatewerke Berlin-Treptow Order for Synchronous Generators RED 25X1 QATP D 25X1 DATE (OF INFO.) 25X1 THIS DOCUMENT CONTAINS INFORMATION AFFICTINO THE NATIONAL DEFENSE OF THE UNITED STATICS, WITHIN THI MEANING OF TITLE ISM SECTIONS 711 AND 794, OF THE U,11. CODE, AS AMENDID, ITS TRANSMISSION OR RIVE? LATION OF ITS CONTENTS TO OR RECEIPT BY AN UNAUTHORISED PERSON 19 PROHIBITED BY LAW, THE REPRODUCTION OF THIS REPORT II PROHIBITED. 25X1 THIS IS UNEVALUATED INFORMATION 25X1 25X1 25X1 RES PONSIVE TO 1 2 CD NO. 00/C NO. ORR NO. DAS NO. OCI NO. DATE DISTR. r Dee 53 NO. OF PAGES 1 NO, OF ENCLS. SUPP. TO REPORT NO. 1. The Elektr?apparatewerke Berlin-Treptow is at present engaged on an order from the Soviet Union for three-phase alternating current Synchronous generators. Specifications are as follows: 1760 amperes, 400 r.p.m., 90 volt excitation, cosine 0.8. The order calls for the delivery of three of these generators by the end of October 1953. Delivery horever will not be made by that time because .the generator is still in development, Completion by the end of 1953 is counted on. 2. Fifteen rectifier sets for transformers have been manufactured and delivered to Czechoslovakia. Construction of charging sets specially for small installations is hampered by shortages of mercury and selenium. The Hydrawerk Leipzig delivers condensers, mainly electrolytic condensers. 3. Vitratore 3re'delivered in aluminum housings'for loads between 6 and 24 volts, direct current. The production is between 350 and 400 pieces per month. Mercury switches are.produced only for the Soviet Union. 4. About 180 charging sets for car batteries were produced in September 1953, as reparations deliveries, Most of the charging sets are connected to`a small gasoline engine. The whole aggregate measures about 50 by 30 by 25. It is enclosed in a screen-like housing and is intended for the use of.the Red Army. The coils and transformers are delivered by the Karl Liebknecht works in Berlin, TERARY SUBJECT & AREA CC :b 12/741.711 N(JM) 7/741.78 4M/C(ZM) 12/741.71 1 4M/C (.N )ens - 7/71} 1 .78 27M (JM ) 4/741.79 4M/C DISTRIBUTION 4 STATE ARMY 25X1 5EUKET 25X1 Approved Fc>'rrl!ease 2003/0/05 : CIA-RDP81-01036R0001ID0060042-9

Coupled arrays of Andronov-Hopf oscillators are investigated. These arrays can be diffusively or repulsively coupled, and can serve as central pattern generator models in animal locomotion and robotics. It is shown that repulsive coupling generates out-of-phase oscillations, while diffusive coupling generates synchronous oscillations. Specifically, symmetric solutions and their corresponding amplitudes are derived, and contraction analysis is used to prove global stability and convergence of oscillations to either symmetric out-of-phase or synchronous states, depending on the coupling constant. Next, the two mechanisms are used jointly by coupling multiple arrays. The resulting dynamics is analyzed, in a model inspired by the CPG-motorneuron network that controls the heartbeat of a medicinal leech.

The use of rotor geometry as a specification in the control of generator voltage and flux density harmonics is studied. The possibility of generating a specific voltage waveform at the load with only a three-phase rectifier between the AC generator and the load is investigated. The armature reaction MMF is expressed as an infinite set of traveling waves with an infinite set of velocities. It is shown that the rotor MMF cannot cancel armature reaction everywhere because the rotor MMF has only the velocity of the rotor. The MMFs present at all the stator slots of an armature coil group are reflected into a single slot in an attempt to control the air gap flux density harmonics be selectively positioning increments of rotor reluctance. This method fails because a general solution for the reflected flux densities could not be obtained. Specifying the air gap reluctance incrementally as the rotor moves under successive stator slots is also tried as a means of harmonic control. This method proves unworkable due to negative MMF requirements and conflicting geometry specifications. Finite Element analysis is introduced as a computer aid to the design of a magnetic structure. Recommendations for further study are included. (Author)

The use of rotor geometry as a specification in the control of generator voltage and flux density harmonics is studied. The possibility of generating a specific voltage waveform at the load with only a three-phase rectifier between the AC generator and the load is investigated. The armature reaction MMF is expressed as an infinite set of traveling waves with an infinite set of velocities. It is shown that the rotor MMF cannot cancel armature reaction everywhere because the rotor MMF has only the velocity of the rotor. The MMFs present at all the stator slots of an armature coil group are reflected into a single slot in an attempt to control the air gap flux density harmonics be selectively positioning increments of rotor reluctance. This method fails because a general solution for the reflected flux densities could not be obtained. Specifying the air gap reluctance incrementally as the rotor moves under successive stator slots is also tried as a means of harmonic control. This method proves unworkable due to negative MMF requirements and conflicting geometry specifications. Finite Element analysis is introduced as a computer aid to the design of a magnetic structure. Recommendations for further study are included. (Author)

The use of rotor geometry as a specification in the control of generator voltage and flux density harmonics is studied. The possibility of generating a specific voltage waveform at the load with only a three-phase rectifier between the AC generator and the load is investigated. The armature reaction MMF is expressed as an infinite set of traveling waves with an infinite set of velocities. It is shown that the rotor MMF cannot cancel armature reaction everywhere because the rotor MMF has only the velocity of the rotor. The MMFs present at all the stator slots of an armature coil group are reflected into a single slot in an attempt to control the air gap flux density harmonics be selectively positioning increments of rotor reluctance. This method fails because a general solution for the reflected flux densities could not be obtained. Specifying the air gap reluctance incrementally as the rotor moves under successive stator slots is also tried as a means of harmonic control. This method proves unworkable due to negative MMF requirements and conflicting geometry specifications. Finite Element analysis is introduced as a computer aid to the design of a magnetic structure. Recommendations for further study are included. (Author)

The use of rotor geometry as a specification in the control of generator voltage and flux density harmonics is studied. The possibility of generating a specific voltage waveform at the load with only a three-phase rectifier between the AC generator and the load is investigated. The armature reaction MMF is expressed as an infinite set of traveling waves with an infinite set of velocities. It is shown that the rotor MMF cannot cancel armature reaction everywhere because the rotor MMF has only the velocity of the rotor. The MMFs present at all the stator slots of an armature coil group are reflected into a single slot in an attempt to control the air gap flux density harmonics be selectively positioning increments of rotor reluctance. This method fails because a general solution for the reflected flux densities could not be obtained. Specifying the air gap reluctance incrementally as the rotor moves under successive stator slots is also tried as a means of harmonic control. This method proves unworkable due to negative MMF requirements and conflicting geometry specifications. Finite Element analysis is introduced as a computer aid to the design of a magnetic structure. Recommendations for further study are included. (Author)

The use of rotor geometry as a specification in the control of generator voltage and flux density harmonics is studied. The possibility of generating a specific voltage waveform at the load with only a three-phase rectifier between the AC generator and the load is investigated. The armature reaction MMF is expressed as an infinite set of traveling waves with an infinite set of velocities. It is shown that the rotor MMF cannot cancel armature reaction everywhere because the rotor MMF has only the velocity of the rotor. The MMFs present at all the stator slots of an armature coil group are reflected into a single slot in an attempt to control the air gap flux density harmonics be selectively positioning increments of rotor reluctance. This method fails because a general solution for the reflected flux densities could not be obtained. Specifying the air gap reluctance incrementally as the rotor moves under successive stator slots is also tried as a means of harmonic control. This method proves unworkable due to negative MMF requirements and conflicting geometry specifications. Finite Element analysis is introduced as a computer aid to the design of a magnetic structure. Recommendations for further study are included. (Author)

The use of rotor geometry as a specification in the control of generator voltage and flux density harmonics is studied. The possibility of generating a specific voltage waveform at the load with only a three-phase rectifier between the AC generator and the load is investigated. The armature reaction MMF is expressed as an infinite set of traveling waves with an infinite set of velocities. It is shown that the rotor MMF cannot cancel armature reaction everywhere because the rotor MMF has only the velocity of the rotor. The MMFs present at all the stator slots of an armature coil group are reflected into a single slot in an attempt to control the air gap flux density harmonics be selectively positioning increments of rotor reluctance. This method fails because a general solution for the reflected flux densities could not be obtained. Specifying the air gap reluctance incrementally as the rotor moves under successive stator slots is also tried as a means of harmonic control. This method proves unworkable due to negative MMF requirements and conflicting geometry specifications. Finite Element analysis is introduced as a computer aid to the design of a magnetic structure. Recommendations for further study are included. (Author)