一种低成本高可靠性纹波补偿控制方法.pdf

一种低成本高可靠性纹波补偿控制方法.pdf

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54 5 Vol.54.No.5 MICROMOTORS 2021 5 May.2021 , (, 510650 ) : , , , , IGBT , IPM , , IGBT , 1.5HP DSP -28034 , , 。 : ; ; ; : TM464 : A : 1001-6848(2021)05-0115-05 A Low-cost and High-reliability Ripple Compensation Control Method FAN Lirong, LI Huaijun ( , , 510650 , ) Abstract: The single-resistance current sampling algorithm has been applied in the field of motor control . The sampling circuit structure is simpler than the traditional sampling circuit .It uses relatively fewer elec- tronic components , which can save costs and improve the company ’s benefits.However, this current sam- pling method is in the low modulation area and critical transition .In this area, the failure of current recon- struction caused by the jitter of the motor current ripple caused by the IGBT switching action causes the cur - rent distortion problem.This problem can easily cause the protection of the IPM module and shutdown at the high frequency of the motor.For this, a low cost and high reliability was proposed .Ripple compensation control technology solved the problem of motor current reconstruction failure and current distortion caused by ripple caused by IGBT switching in the low modulation area and critical transition area of current sampling . At the same time, it was implemented on the 1.5HP air conditioning system.Based on DSP-28034 a set of permanent magnet synchronous motor -driven mainboard test system , the system experiment results further verified the correctness and advancement of this method .At the same time, it has strong practical guiding significance for en

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