High temperature magnetic data----the key to magnetic bearings

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High temperature magnetic data----the key to magnetic bearings

Source: China Bearing Network Time: 2013-02-15
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High-temperature magnetic data; is the key to the success of developing various new weapons and equipment. Complete the core skills of the new power system (electric system); including high-energy integrated power supply, main propulsion starter built in starter/generator set and non-touch magnetic bearing. Operating temperature of integrated power supply; currently limited to 300 °C / around; however; second generation electric space shuttle (MEAII) planned to operate in 500 ~ 600 ° C by 2005. University of Texas Austin Electromechanical (UT-CEM Is developing a flywheel communication generator for the pulse power supply of the weapon system for the new hybrid electric combat vehicle of the US Department of Defense; and adjusting the power supply for the equipment for electric bombing equipment. This communication generator is also used for propulsion and full active electromagnetic suspension systems. Induction traction motor power supply; they store up to 25MJ per 20,000 rpm, intermittent operation of the weapon system; must supply peak power of 5MW; continuous power up to 350kW; used to propel the associated load. High-speed starter operation; starter / The temperature of the generator magnetic data is pushed above 400 °C; and the demand can accept 825MPa stress. Due to core loss Air pump loss; the actual operating temperature of the rotor data will also be affected by the thermal effects of the spin-connected rotor. High stress and high operating temperature; will cause the electromechanical components to creep and deform. Therefore; the electric system requires high-speed starter / power generation The unit is incorporated into the main propulsion engine; it can be operated in a large stress, high temperature, air-cooled environment; it also uses leading magnetic bearings; the overall strength of the smooth and non-conflicting initiator is obtained.
The US military business unit, NASA and the aerospace industry are all interested in magnetic bearings; special emphasis is placed on high temperature use; as they plan to use it as a component of the future gas turbine starter (spindle), integrated power supply and larger main propulsion generators The rotor; all supported by magnetic force; to eliminate conflicts and corresponding wear. The bearing depicted by the permanent magnet is smaller than the bearing volume using only soft magnetic data. The shell is 幔 俗 俗. But now the operating temperature of the permanent magnet data is softer than The magnetic data is much lower. The large radial fan bearing uses the rear radial bearing to exceed the maximum operating temperature of 550 ° C; the rotary energy storage equipment in the aerospace power system; may always work at the world pole temperature.
In addition; flying control electromechanical operation system and secondary power supply; also need to develop high-temperature magnetic body; to optimize the flight system depiction. The US military is actively developing high-energy weapons. It is planned to eliminate the demand for traditional ordnance by 2030. No matter the channel is built on land. Still built at sea or in the air; these weapons require high power, light power. Follow the power attack and energy storage skills; continue to improve the growing power power, self-starting capabilities, high-speed magnetic bearing work and air cooling of electromechanical components These become the key issues. Magnetic data with higher operating temperatures; it helps to describe and improve all of this. Follow the continuous development of military and civilian electrical and mechanical stress; to improve the overall function; the need for the power system Progress. Develop power generation, distribution and power systems with higher speeds and temperatures; this is a very significant development trend. The new magnetic data series is the key to advanced use.
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