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Method for designing and controlling asynchronous motor power generation system of stator duplex winding

A stator double-winding, asynchronous motor technology, applied in the control system, control generator, manufacturing motor generators, etc., can solve the unmanned research, design method and control method of the stator double-winding asynchronous power generation system that cannot be applied to large-scale changes in speed and other issues to achieve the effect of reducing volume and cost

Inactive Publication Date: 2006-02-01
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0004] The stator double-winding asynchronous power generation system has been studied in recent years. The Naval Engineering University of my country uses this stator double-winding asynchronous generator system in the ship power system, but its characteristic is that the generator speed is basically constant. Its design method and None of the control methods are suitable for occasions where the speed changes in a large range
The stator double-winding asynchronous power generation system whose speed changes in a wide range has not been studied so far

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  • Method for designing and controlling asynchronous motor power generation system of stator duplex winding
  • Method for designing and controlling asynchronous motor power generation system of stator duplex winding
  • Method for designing and controlling asynchronous motor power generation system of stator duplex winding

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Embodiment Construction

[0020] The stator double-winding asynchronous motor power generation system proposed by the present invention is as attached figure 1 As shown, the rotor of motor 1 is also a common cage-type rotor, but the stator has two sets of windings, one set is the main winding, which transmits electric power outward, and the output terminal is connected with an AC capacitor 5, a rectifier 6 and a filter capacitor 7 to output constant voltage DC. It can directly feed power to electrical equipment, and can also be connected to a DC grid with a suitable voltage. If external AC power is to be supplied, an inverter 11 and a controller 12 will be added, which can be connected to the 50Hz three-phase AC power grid. The other set is the excitation winding, which is connected with the excitation converter 2, the capacitor 3 and the controller. The excitation converter provides the required reactive current. Using a certain control strategy, the output voltage of the main winding can be effective...

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Abstract

Within variable range of rotate speed and load, genetic algorithm is adopted in the design method to carry out optimized iteration to select value of AC capacitance and parameters of motor in order to make maximum absolute value of inductive exciting current be equal to maximum absolute value of capacitive exciting current. Thus, parameters of motor and system are obtained so as to realize minimum capacity of excitation converter. Based on magnitude of instantaneous rotate speed and load, the control method calculates magnitude of reactive current the controller should supply. Excitation converter supplies inductive and capacitive reactive currents for the motor so as to realize constant output voltage. Capacity of the excitation converter is about 1 / 3 of total output capacity. The invention reduces size and lowers cost, outputs constant DC capable of incorporated to power network, applicable as independent power source and wind electric power generation on sea.

Description

1. Technical field [0001] The invention relates to an optimal design and control method of a stator double-winding asynchronous motor power generation system suitable for variable speed operation. 2. Background technology: [0002] With the high-tech development of aircraft, tanks, warships, etc., a large number of control equipment and precision electronic equipment must adopt modern computer control technology, which puts forward higher and higher requirements for power supply, not only requiring a large increase in power supply capacity, but also requiring high Performance, high stability, high reliability, high cost performance and other performance qualities. For this reason, the United States and other western developed countries have invested a lot of manpower and material resources in research in this area since the 1980s. In 1997, experts from the NASA Lewis Research Center in the United States pointed out that with the development of power electronics technology, ...

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Application Information

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IPC IPC(8): H02K15/00H02P9/14H02P9/48
Inventor 胡育文黄文新刘陵顺
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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