External excitation strong induction motor

Abstract

The invention discloses an external excitation strong induction motor, and belongs to the field of motor. The invention discloses an external excitation strong induction motor. A main generator is a permanent magnet motor with the rated power of 30%-40%. Generated power provided by the motor is used as an excitation power source of the main generator. The three-phase electromotive force of the exciter is rectified and filtered through the full-bridge rectified AVR and then transmitted to the rotor winding of the main generator to form an excitation magnetic field which can meet the requirementof the inductance electric appliance which does not exceed the rated load of the generator at the starting moment, so that the requirement of the inductance electric appliance of which the load doesnot exceed the rated power of the generator set is met. The change of the load voltage captured by the AVR in all directions is carried to automatically adjust the magnitude of the exciting current orreverse excitation, so that the characteristic of the magnitude of the exciting magnetic field of the main generator is controlled, and the load compatibility of the small and medium-sized generatorsis greatly expanded.

Description

technical field [0001] The invention relates to the field of motors, in particular to an external excitation strong inductance motor. Background technique [0002] A generator refers to a mechanical device that converts other forms of energy into electrical energy. It is driven by a water turbine, steam turbine, diesel engine or other power machinery, and converts the energy generated by water flow, air flow, fuel combustion or nuclear fission into mechanical energy and transmits it to the generator. and then converted into electrical energy by the generator; [0003] Flywheel energy storage refers to the energy storage method that uses the motor to drive the flywheel to rotate at high speed, and then uses the flywheel to drive the generator to generate electricity when needed. The technical features are high power density and long life. The flywheel body is the core component of the flywheel energy storage system. Its function is to increase the limit angular velocity of ...

AI Technical Summary

Problems solved by technology

[0004] The generators in the current small and medium-sized generator sets all use self-excited motors, that is, the power output winding and the excitation winding share the same rotor excitation field. This design makes the motor process simple, convenient for mass production, and relatively low product cost; but when the load For electrical appliances with inductance, the rated current of several times the rated load needs to be provided at the moment of starting, and the self-excited motor cannot provide an excitation field that can meet this requirement due to the limitation of the power of the self-excited excitation winding at this time, resulting in the load inductance of the self-excited motor. The capacity of electrical appliances is low, and usually only generator sets with twice the rated inductive load can be configured to meet the usage requirements

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