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고속 PWM 솔레노이드 제어 기반 EMI/Acoustic 노이즈 개선 연구
정현철(Hyuncheol Jung),성시환(Sihwan Sung),김동규(Dongkyu Kim),김병곤(Byunggon Kim),정준채(Junchae Jung) 한국자동차공학회 2019 한국자동차공학회 학술대회 및 전시회 Vol.2019 No.11
Generally, Solenoid valve is used to control enormous mechanical machine in automobile. At that time using of PWM driven solenoid has become common due to inefficient to drive a solenoid with traditional on/off method in terms of power usage and solenoid life caused by coil burden. However, PWM driven has chronic problems like as EMI & Acoustic noise issue. In this paper, we proposed high-frequency PWM driven scheme with DC-DC converting for using efficient power dissipation and improving EMI performance. Using equations for differential noise amplification, the DC-DC converter reduces the switching area, eliminating EMC issues, and uses power efficiency with PWM. The simulation results verify plausible performances of proposed scheme based on high-frequency PWM-directly driven solenoid valve and buck converting circuit.
솔레노이드 밸브 전류 응답성 향상을 위한 이종의 PWM 제어 기법
성시환(Sihwan Sung),최성열(Sungyeol Choi),김병곤(Byunggon Kim),정준채(Junchae Jung) 한국자동차공학회 2019 한국자동차공학회 학술대회 및 전시회 Vol.2019 No.11
Generally, Solenoid valve is used to control enormous mechanical machine in automobile. At that time using of PWM driven solenoid has become common due to inefficient to drive a solenoid with traditional on/off method in terms of power usage and solenoid life caused by coil burden. In this paper, we conduct modeling and mathematical analysis in regards to the instant current of PWM controlled solenoid valve with slow decay and fast decay. Also we propose the heterogeneous PWM controlled scheme which is considered trade-off of power-dissipation, electromagnetic-interference and response-time performance. The simulation results verify plausible performances of proposed the heterogeneous PWM controlled scheme via showing response-time by current driven of solenoid valve based on real-parameters of continuous-damping-control system.