High Power Linear Electromagnetic Acceleration System

A linear electromagnetic and acceleration system technology, applied in the field of motors, can solve the problems of difficult dynamic current sharing control and no fault tolerance function

Active Publication Date: 2020-04-07
HARBIN INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention proposes a high-power linear electromagnetic acceleration system in order to solve the problems that the drive system of the existing high-power linear electromagnetic acceleration system is difficult to control the dynamic current and does not have a fault-tolerant function.

Method used

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  • High Power Linear Electromagnetic Acceleration System
  • High Power Linear Electromagnetic Acceleration System
  • High Power Linear Electromagnetic Acceleration System

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Embodiment one: combine below Figure 3 to Figure 7 This embodiment will be described in detail.

[0075] The high-power linear electromagnetic acceleration system described in this embodiment includes a high-power twelve-phase linear motor and a high-voltage inverter system;

[0076] The high-power twelve-phase linear motor has a long primary and short secondary structure, the primary is a twelve-phase coreless centralized winding, and the secondary is a five-pair pole structure;

[0077] High-power twelve-phase linear motor includes stator and mover;

[0078] The stator is fixed on the ground, the stator includes suspension, guide primary 1 and propulsion primary 2, the mover is installed on the skid car 3, the mover includes a cryogenic container 4 and a superconducting coil 5, and the superconducting coil 5 is fixed in the cryogenic container 4 ;

[0079] Both the levitation and guiding primary 1 are double-sided structures, and each side of the primary includes ...

Embodiment 2

[0083] Embodiment two: combine below Figure 8 and Figure 9 This embodiment will be described in detail.

[0084] The circuit structure of the coil drive unit or the phase coil drive unit of the high-power linear electromagnetic acceleration system described in this embodiment is the same;

[0085] The circuit structure includes a power supply U i0 , Power U i1 , power switching device S 1 , power switching device S 2 , power switching device S 3 , power switching device S 4 , power switching device S 01 , power switching device S 02 , power switching device S 11 and the power switching device S 12 ;

[0086] Power switching device S 1 The negative pole of the power switching device S 2 connected to the positive pole to form a bridge arm;

[0087] Power switching device S 3 The negative pole of the power switching device S 4 The positive pole of the bridge is connected to form another bridge arm;

[0088] Connect the two bridge arms in parallel to form a full...

Embodiment 3

[0095] Embodiment three: the following combination Figure 10 and Figure 11 This embodiment will be described in detail.

[0096] The circuit structure of the coil drive unit or the phase coil drive unit of the high-power linear electromagnetic acceleration system described in this embodiment is the same;

[0097] The circuit structure includes a power supply U i0 , Power U i1 , power switching device S 1 , power switching device S 2 , power switching device S 3 , power switching device S 4 , Diode D 1 and diode D 2 ;

[0098] Power switching device S 1 The positive pole and the power supply U i0 The anode of the power switch S 1 The negative pole of the power switching device S 2 The anode of the power switch S 2 The negative pole of the power switching device S 3 The anode of the power switch S 3 The negative pole of the power switching device S 4 The anode of the power switch S 4 The negative pole of the power supply U i1 connected to the negative pole; ...

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Abstract

The invention relates to a high-power linear electromagnetic acceleration system and belongs to the field of motors. The driving system of a conventional high-power linear electromagnetic accelerationsystem has a great difficulty in dynamic current-sharing control and does not have a fault-tolerant function. The high-power linear electromagnetic acceleration system is characterized in that coilsin a primary starting region has a large number of series turns, a coil driver has a small output current, a purpose of driving the low-speed section of a linear motor by using a driver with a small current and a high chopping frequency is achieved; coils in a primary terminal region has a small number of series turns and the coil driver has a large output current. When the high-speed section is driven, multiple parallel unit coils are connected in parallel, and each parallel unit coil is driven separately, thereby realizing a purpose of driving a high-power motor in parallel by using small and medium power drivers, avoiding the great difficulty in dynamic current-sharing control caused by parallel connection of multiple power switching devices and achieving the fault tolerance of the driving system.

Description

technical field [0001] The invention relates to an electromagnetic acceleration system and belongs to the field of motors. Background technique [0002] Existing high-power linear electromagnetic acceleration systems are mainly used in carrier-based aircraft of aircraft carriers, electromagnetic ejection of unmanned aerial vehicles and early warning aircraft, auxiliary launch of missiles, booster launch of aerospace vehicles, and high-speed and high-acceleration electromagnetic propulsion test systems and other occasions. Among them, the carrier-based aircraft electromagnetic catapult is a typical high-power linear electromagnetic acceleration system, which is mainly composed of a high-power linear motor, an electric energy storage device and a power converter. The carrier-based aircraft electromagnetic catapult uses the traveling electromagnetic force generated by the high-power linear motor to propel the carrier-based aircraft to take-off speed. It has many advantages such...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K41/02H02M7/5387H02M7/483
CPCH02K41/02H02M7/483H02M7/5387
Inventor 寇宝泉韦坚金银锡
Owner HARBIN INST OF TECH
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