레이더 체계 전원공급용 80 kW급 고효율 영구자석형 발전기 개발 및 성능분석

Development of Performance Analysis 80 kW High-efficiency Permanent Magnet Generator for Radar System Power Supply

Abstract

Electrical power supply is needed to operate the radar system in the field. In addition, it should not cause performance deterioration under the environmental factors due to characteristics of military equipment, and should not cause malfunction due to electromagnetic waves generated in radar, and then should not cause malfunction in radar equipment. Therefore, By applying a permanent magnet to the rotor of the generator, light weighting and high efficiency of generator were achieved. As a result, electrical performance test of the generator, the rated output power was 80.8 kW, the maximum output power was 88.1 kW, and the output power efficiency was 98.1 % under the full load condition. When the load capacity of the generator was changed from no load to full load, the maximum voltage variation was 3.6 % and the frequency variation was 0.3 %. As a result of the transient response test for measuring the output power of the generator according to the load characteristics change, the maximum voltage variation of 7.9 %, frequency variation of 0.5 % were confirmed, and the transient response time was 2.1 seconds. Environmental tests were conducted in accordance with MIL-STD-810G and MIL-STD-461F to evaluate the operability of the generator groups. Normal operation of radar system generator group was confirmed under high temperature and low temperature environment conditions. Electromagnetic tests were conducted to check if electromagnetic wave generated from both radar system and generator group in operation caused any performance deterioration to each other. As a result, it was confirmed that the performance deterioration due to electromagnetic wave inflow, radiation, and conduction did not occur. It is expected that it should be possible to provide high efficiency power supply and stable power supply by applying to various military system as well as radar system.

Fig. 1. Shelter installation of generator set

Fig. 2. Block diagram of generator set

Fig. 3. Flux-line of generator set

Fig. 4. Voltage curve of generator set(Full load)

Fig. 5. Current curve of generator set(Full load)

Fig. 6. Torque curve of generator set(Full load)

Fig. 7. Diagram of generator performance test

Fig. 8. Result of generator power factor measurement

Fig. 9. Measuring wave at generator out putperformance test

Fig. 10. Temperature profile of high & low temperature storage test

Fig. 11. Arrangement of high & low temperature operation test

Fig. 12. Temperature profile of high & low temperature operation test

Fig. 13. Arrangement of generator RE102 test

Fig. 14. Results of generator RE102 test

Table 1. Dimensions of generator set

Table 2. Result of generator performance analysis

Table 3. Result of generator performance test

Table 4. Result of generator efficiency test

Table 5. Results of generator voltage/frequency regulation test

Table 6. Result of generator transient response test

Table 7. Condition of generator environmental test

Table 8. EMC characteristic requirements

Table 9. Test results of electric field radiated susceptibility

Table 10. Specification of conducted susceptibility test