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A fault-tolerant permanent magnet starter generator system and its control method

A technology for starting power generation and fault tolerance, applied in motor generator control, synchronous generator control, motor control and other directions, can solve the problem of inability to effectively suppress short-circuit current between turns, achieve simple and reliable switching control, reduce short-circuit current, current high sine effect

Active Publication Date: 2019-11-12
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0006] The purpose of the present invention is to address the shortcomings of the above-mentioned background technology, provide a permanent magnet starter power generation system with fault tolerance and its control method, realize the effective suppression of the inter-turn short-circuit current of the permanent magnet starter system, and solve the existing problems The technical problem that the fault-tolerant permanent magnet starter generator cannot effectively suppress the inter-turn short-circuit current

Method used

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  • A fault-tolerant permanent magnet starter generator system and its control method
  • A fault-tolerant permanent magnet starter generator system and its control method
  • A fault-tolerant permanent magnet starter generator system and its control method

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Embodiment Construction

[0022]Below in conjunction with accompanying drawing, the technical scheme of invention is described in detail:

[0023] figure 1 A structural diagram of a preferred example of the starter generating system of the present invention is shown. As shown in the figure, the permanent magnet starter generator adopts a double-three-phase concentrated winding structure, and the double-three-phase armature winding adopts a star connection mode, and the double-three-phase The output terminals of the armature winding are respectively connected with two sets of three-phase bridge power conversion circuits with filter capacitors (as shown in the figure, including the switching tube Q 11 ~Q 16 , Q 21 ~Q 26 , Diode D 11 ~D 16 ,D 21 ~D 26 and filter capacitor C 1 ~C 2 ), where the ABC three-phase winding is connected to the first bridge rectifier circuit, the DEF three-phase winding is connected to the second bridge rectifier circuit, and the DC sides of the two power conversion circ...

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Abstract

The invention discloses a permanent-magnet starting power generation system with fault-tolerant capability and a control method thereof, and belongs to the technical field of starting power generation. The system comprises dual three-phase high-impedance permanent-magnet starting power generators, two groups of bidirectional bridge-type power conversion circuits, a starting power generation changeover switch, a storage battery, a DC load, a starting power generation system controller, a position sensor, a temperature sensor, a current sensor and a voltage sensor. The control system employing aspace vector pulse width modulation (SVPWM) technology runs at a starting stage and a power generation stage; and when a turn-to-turn short-circuit fault occurs in the motor, a quadrature-axis current given signal of a fault winding is set to be zero, a direct-axis current given signal is set to be a weak magnetic current at the size of rated current, so that the fault winding enters a weak magnetic state, the short-circuit current of the fault winding is limited to a range near to the rated current, a large part of power output is borne by a normal winding, the system is stable in starting torque, simple in power generation control and high in reliability, and the short-circuit current, particularly the turn-to-turn short-circuit current can be effectively limited.

Description

technical field [0001] The invention relates to a starting power generation system, in particular to a permanent magnet starting power generation system with fault tolerance capability and a control method thereof, belonging to the technical field of starting power generation. Background technique [0002] The integration of starter and power generation can reduce the volume of the system and make the structure compact, and it is an independent power supply system that can be applied to aircraft. According to the principle of reversible operation of the motor, the generator is used for two purposes. When the aeroengine is not working, the motor is used as an electric motor to start the aeroengine. After the aeroengine starts, the aeroengine drives the motor to generate electricity in turn. starter, reducing the volume and weight of the system and improving efficiency. [0003] Permanent magnet synchronous motors have the advantages of high output torque, high power density,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P9/00H02P29/028H02P21/00H02P25/022H02P103/20
CPCH02P9/006H02P21/00H02P25/024H02P29/027H02P29/032H02P2103/20H02P2207/05
Inventor 张卓然蒋云逸黄健耿伟伟
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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