Double-stator and barrel-type permanent magnet rotor accelerator with closed cycle multi-channel counterflow cooling

Abstract

The invention relates to a double-stator cylindrical permanent magnet rotor accelerator with closed circulation multi-channel counter flow cooling, and belongs to the technical field of electrical engineering. The invention needs to solve a technical problem of improving the power density of the accelerator, obtaining higher electromagnetic torque density and enhance the system response of the accelerator. The scheme is that an inner stator structure is further set in a rotor, both the inner and outer surfaces of the rotor are provided with surface-mounted permanent magnets, and windings of the inner and outer stators are simultaneously supplied with high frequency electricity. The double stator and cylindrical permanent magnet rotor structure improves the power density of the acceleratorand obtains higher electromagnetic torque density, and has the characteristics of small rotational inertia and fast system response at the same time. The forced multi-channel circulation closed counter flow cooling mode of the accelerator improves the cooling efficiency of the accelerator, reduces the temperature rise of the system under high-speed rotation and ensures the stable operation of thesystem under high-frequency power supply acceleration of the accelerator. In addition, the accelerator is less disturbed by external factors due to adoption of the closed structure, thereby being applicable for immersion in a fuel liquid, and not affecting the cooling system.

Description

technical field [0001] The invention relates to a rotor accelerator with a cooling system, in particular to a dual-stator and barrel-type permanent magnet rotor accelerator with closed cycle multi-channel countercurrent cooling, belonging to the technical field of electrical engineering. Background technique [0002] The manufacture of high-tech products has extremely high requirements on system performance and heat generation limit, especially some electromagnetic precision devices used in the aerospace field, which require excellent stability, accuracy, rapidity, robustness, etc. , while showing superior performance, its effective heat dissipation is also a key issue, which is one of the core design technologies. [0003] When the rotor of the accelerator rotates at high speed, if the cooling effect of the inner stator is not good, it will cause the accelerator to burn out, and even endanger the safe operation of the entire system. Therefore, it is necessary to design an ...

AI Technical Summary

Problems solved by technology

For the electromagnetic acceleration device with double stator structure, on the one hand, the inner stator has a smaller circumferential dimension than the outer stator, and the inner stator wire compound is higher, which makes the side of the inner stator generate serious heat; on the other hand, for the electromagnetic device with inner-outer double stator structure, The inner stator is built in the innermost part of the outer stator and rotor, and the inner stator cannot directly exchange heat with the external environment

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