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Method for controlling maximum output power of hybrid excitation synchronizing motor

A technology with maximum output power and hybrid excitation synchronization, applied in the field of electrical transmission, it can solve the problems of low efficiency and narrow operating range.

Active Publication Date: 2015-05-13
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The advantages of the above two types of control methods are simple and convenient; the disadvantage is that the motor has low efficiency and narrow operating range in the entire operating range.

Method used

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  • Method for controlling maximum output power of hybrid excitation synchronizing motor
  • Method for controlling maximum output power of hybrid excitation synchronizing motor
  • Method for controlling maximum output power of hybrid excitation synchronizing motor

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with embodiment and accompanying drawing.

[0033] image 3 In order to realize the system block diagram of the maximum output power control method of the hybrid excitation synchronous motor of the present invention, the control system consists of an AC power supply, a rectifier, a voltage stabilizing capacitor, a DSP controller, a main power converter, an auxiliary power converter, a sensor, and a hybrid excitation synchronous motor , photoelectric encoder and other components.

[0034] The AC power supplies power to the entire system. After being rectified by the rectifier, the voltage is filtered and stabilized, and sent to the main and auxiliary power converters. The Hall voltage sensor collects the bus voltage and sends it to the controller after conditioning. The output terminals of the main and auxiliary power converters are connected to the hybrid excitation synchronous motor. The Hall current...

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Abstract

The invention discloses a method for controlling maximum output power of a hybrid excitation synchronizing motor. The method is that a d axis, a q axis and excitation current are coordinately controlled to fully utilize the input power so as to maximize the output power; a motor running area is determined according to the rotating speed; when the motor runs at a low speed area, the control is performed by an id=0 manner; if the load torque is not greater than the rated torque, magnet increase type control is saved; if the load torque is more than the rated torque, the magnet increase type control can be carried out; when the motor runs at a high speed area, the id is kept to be 0, the magnet is decreased under the control of the maximum input / output power, and the q axis current and the excitation current if are coordinated to keep the maximum output power; when the excitation current if reaches the rated value, the d axis current and the q axis current are coordinated to keep maximum output power. According to the method, the power utilization of the weak magnetic running area is increased, the speed regulating range is expanded, and therefore, the hybrid excitation synchronizing motor can run at high efficiency within a wide and constant power operation range.

Description

technical field [0001] The invention belongs to the technical field of electric transmission, and relates to a maximum output power strategy, in particular to a control method for a hybrid excitation synchronous motor. Background technique [0002] Hybrid excitation synchronous motor is a kind of wide speed regulation motor developed on the basis of permanent magnet synchronous motor and electric excitation synchronous motor. Its main purpose is to solve the problem that the air gap magnetic field of permanent magnet synchronous motor is difficult to adjust. The hybrid excitation synchronous motor has two excitation sources, one is permanent magnet and the other is electric excitation. The magnetic potential generated by the permanent magnet is the main magnetic potential, and the magnetic potential generated by the excitation winding is the auxiliary magnetic potential. This motor combines the advantages of permanent magnet synchronous and electric excitation synchronous mo...

Claims

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Application Information

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IPC IPC(8): H02P21/12
Inventor 林明耀赵纪龙
Owner SOUTHEAST UNIV
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