| 采用BUCK电路的低电感无刷直流电动机转矩脉动与损耗分析 |
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| 引用本文： | 侯红胜,刘卫国,马瑞卿.采用BUCK电路的低电感无刷直流电动机转矩脉动与损耗分析[J].微特电机,2012,40(7):9-11,18. |
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| 作者姓名： | 侯红胜 刘卫国 马瑞卿 |
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| 作者单位： | 西北工业大学,陕西西安,710072 |
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| 摘 要： | 通过分析低电枢电感无刷直流电动机的特点,在无刷直流电动机驱动器逆变电路前级采用BUCK变换电路实现电压的调整,在逆变电路中采用Hall信号换相而不叠加PWM斩波信号。通过建立无刷直流电动机及其驱动电路的模型,并对其进行仿真分析,结果表明采用BUCK变换电路后能够减小电机的相电流和母线电流的脉动,减小电磁转矩脉动,消除直流端反向电流,电机铁损耗和铜损耗也大大降低。
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| 关 键 词： | 无刷直流电动机 BUCK变换电路 反向电流 转矩脉动 铁损耗 铜损耗 |
Torque Ripple and Loss Analysis in Low Inductance BLDCM Driver Using BUCK Circuit |
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| HOU Hong-sheng
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LIU Wei-guo
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MA Rui-qing.Torque Ripple and Loss Analysis in Low Inductance BLDCM Driver Using BUCK Circuit[J].Small & Special Electrical Machines,2012,40(7):9-11,18. |
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| Authors: | HOU Hong-sheng LIU Wei-guo MA Rui-qing |
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| Affiliation: | (Northwestern Polytechnical University,Xi’an 710072,China) |
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| Abstract: | By analyzing the characters of low armature inductance brushless direct current motor,BUCK converter was added in front of the 3-phase inverter.The inverter was changed through it.The position signal was used to realize phase commutation without PWM chopper combining on it.A model including the motor and driver was established.The simulation results show that DC-link,torque ripple,iron loss and copper loss are reduced dramatically in this kind of driver circuit.The reversal DC-link current is vanished. |
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| Keywords: | BLDCM BUCK inverter reversal DC-link current torque ripple iron loss copper loss |
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