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조규판(Kyu-Pan Cho),이경호(Kyoung-Ho Lee),노채균(Chae-Gyun Ro),배영호(Young-Ho Bae),심광렬(Kwang-Yeal Sim) 한국조명·전기설비학회 2000 한국조명·전기설비학회 학술대회논문집 Vol.2000 No.-
The time sharing type high frequency inverter using serial-parallel resonant to give VVVF function in the inverter used as power source of induction heating at high frequency is presented in this paper. This proposed inverter can reduce distribution of the switching current because of using the current of serial resonant circuit to the input current of the parallel one. The analysis of the proposed circuit is generally described by using the normalized parameters. Also, according to the calculated characteristics value, a method of the circuit design and operating characteristics of the inverter is proposed. In addition, this paper proves the validity of theoretical analysis through Simulation. This proposed inverter show that it can be practically used in future as power source system for induction heating application, DC-DC converter etc.
조규판(Kyu-Pan Cho),원재선(Jae-Sun Won),이봉섭(Bong-Seob Lee),심광렬(Kwang-Yeal Sim),배영호(Young-Ho Bae) 한국조명·전기설비학회 2002 한국조명·전기설비학회 학술대회논문집 Vol.2002 No.-
This paper describes the instantaneous current resultant type load parallel high frequency resonant inverter consisting of three unit half-bridge serial and parallel resonant inverter can be used as power source of induction heating. This proposed inverter can reduce distribution of the switching current because of using the current of serial resonant circuit to the input current of the parallel one. The analysis of the proposed circuit is generally described by using the normalized parameters. Also, the principle of basic operating and the its characteristics are estimated by the parameters such as switching frequency(μ), load resistance(λ). Experimental results are presented to verify theoretical discussion. This proposed inverter will can be practically used as a power supply in various fields as induction heating application DC-DC converter etc.
송현직(Hyun-Jig Song),김민회(Min-Huei Kim),박찬규(Chan-Gyu Park),조규판(Kyu-Pan Cho),윤대희(Dae-Hee Yoon),지승욱(Seung-Wook Jee) 한국조명·전기설비학회 2007 한국조명·전기설비학회 학술대회논문집 Vol.2007 No.5월
This paper describes the discharge and ozone generation characteristics with variation of the applied voltage, the quantity of ozonizer, the quantity of flowing material gas. The important conclusions are as follows. The discharge voltage and current values are proportional to the applied voltage. The ozone concentration and generation are proportional to the applied voltage and the number of ozonizer. As the maximum value of ozone concentration and generation of silent discharge type ozonizer using discharge lamp can be obtained 890[ppml and 59.7[㎎/h] respectively.
김종해,이동헌,이철우,김중기,김동희,조규판 嶺南大學校 工業技術硏究所 1998 工業技術硏究所論文集 Vol.26 No.2
This paper proposes a double resonant high frequency inverter which reduces the distribution of the switching current. The analysis of the proposed circuit is generally described by using the normalized parameters. Also, the principle of the basic operation and the characteristics of driving were estimated by the switching frequency and the load parameters. And the data for the design were got by the characteristic values obtained from the characteristic estimation. At the same time the example of the design method was proposed. In addition, Comparing the theoretical waveforms to the experimental waveforms certified the operating characteristics of the proposed Inverter. It is certain that the proposed circuit will be used and expanded in the high frequency power supplies like induction heating systems.
고속전철 추진 시스템의 미끄럼 방지 제어기법에 관한 연구
황돈하,김동희,노채균,심광열,조규판,정원영 영남대학교 공업기술연구소 1999 工業技術硏究所論文集 Vol.27 No.2
Induction motor drive with PWM inverter control has been developed for Korean High Speed Railways. To improve traction performance, the anti-slip control(ASC) to recover adhesion must be considered. This paper describes a novel hybrid anti-slip control method for the induction motor drive. By introducing the vector control for drive system, quick response of the motor torque can be achieved when wheels are going to slip. A hybrid control scheme by mixing two conventional control methods (slip velocity feedback control and slip detection pattern control) for wheel slip and re-adhesion is proposed. This control method is simulated by motor drive, train load, and friction-creep models. The train running simulation results based on induction motor vector control with PWM inverter show that good re-adhesion characteristics are obtained.