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Mixed excitation synchronous machine generating system

A technology of hybrid excitation synchronization and power generation system, which is applied in the direction of controlling generators, control systems, and generators through magnetic field changes, and can solve problems such as increasing system volume, weight, increasing system complexity and cost, and reducing system reliability. , to achieve the effect of improving system efficiency, reducing excitation loss and simplifying system design

Inactive Publication Date: 2010-09-08
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most AC synchronous motor control systems are designed independently of the excitation winding regulation circuit and the main power conversion circuit, which not only increases the volume and weight of the system, but also increases the complexity and cost of the system and reduces the system cost. reliability

Method used

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  • Mixed excitation synchronous machine generating system
  • Mixed excitation synchronous machine generating system
  • Mixed excitation synchronous machine generating system

Examples

Experimental program
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Effect test

Embodiment Construction

[0011] As shown in Figure 1, a power generation system of a hybrid excitation synchronous motor includes a hybrid excitation synchronous motor 1, a three-phase four-leg matrix converter 2 and a clamp protection circuit 3, wherein: the three-phase hybrid excitation synchronous motor 1 The output ends are respectively connected to the three-phase input end of the three-phase four-leg matrix converter 2 and the three-phase input end of the clamp protection circuit 3, and the first to third bridge arm outputs of the three-phase four-leg matrix converter 2 terminals are respectively connected to the three-phase output terminals of the clamp protection circuit 3, and are respectively connected to the three-phase electrical network or the three-phase load, and the output terminal of the fourth arm of the three-phase four-arm matrix converter 2 is connected to the hybrid excitation synchronous motor 1 The input end of the excitation winding of the hybrid excitation synchronous motor 1 ...

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Abstract

The invention discloses a three-phase four-bridge arm matrix typed converter with an excitation function, belonging to the field of power converter. The structure of the converter mainly comprises a hybrid excited synchronous motor, a three-phase four-bridge arm matrix-typed converter and a clamp protection circuit. The converter uses the fourth bridge arm output terminal of the three-phase four-bridge arm matrix-typed converter to be connected with the input terminal of the excitation winding of the hybrid excited synchronous motor, the output terminal of which is connected in parallel with the fixed end of a bidirectional selection switch between the clamp protection circuit buses so as to form the excitation circuit, thus realizing the integral design of the power converter and the excitation circuit. In the invention, the converter not only has the advantages of traditional three-phase AC-AC matrix converter, but also realizes the motor excitation control, thereby reducing the excitation loss of the system and improving the efficiency of the system at the same time.

Description

technical field [0001] The invention relates to a power generation system, in particular to a hybrid excitation synchronous motor power generation system using a three-phase four-arm matrix converter, belonging to the field of power converters. Background technique [0002] An AC motor is a motor that converts electrical energy into mechanical energy. The electric energy used in industry, agriculture and daily life is generally supplied by synchronous generators. When synchronous motors are running, the output voltage of the motor is related to the magnetic field of the motor. By adjusting the excitation magnetic field, the output voltage of the motor can be controlled. In the electric excitation synchronous motor, in addition to the armature winding, there is also a set of excitation winding. By adjusting the excitation current flowing in the excitation winding, the excitation magnetic field can be adjusted conveniently, so as to realize the control of the output voltage o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M5/22H02M7/12H02P9/00H02P9/14
Inventor 姜田贵周波史明明毛怡然
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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