AUTOMATIC VOLTAGE REGULATOR HAVING ALTERNATING CURRENT SWITCH

• Main Authors: CHANG, Chul Ho, PARK, Si Woo, CHOI, Young Gyun, JO, Chan Yong
• Format: Patent
• Language: English; French; Korean
• Published: 29.11.2018
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The present invention relates to a technology for implementing an automatic voltage regulator which is simple in structure and requires low cost by using two alternating current switches, and enabling highly precise control of an output voltage of the automatic voltage regulator. The present invention comprises: an LC filter for smoothing an alternating current voltage input in a continuous pulse form, and generating and outputting an alternating current voltage which has the same form as that of an input voltage but has a lower level than the input voltage; a first alternating current switch for switching the input voltage according to a first control signal, and generating the alternating current voltage input in the continuous pulse form, so as to supply the generated alternating current voltage to the LC filter; and a second alternating current switch for performing switching according to a second control signal in each period in which the first alternating current switch is turned off, and providing a closed loop to gradually reduce current flowing in an inductor of the LC filter. La présente invention concerne une technologie pour la mise en œuvre d'un régulateur automatique de tension qui est de structure simple et présente un faible coût grâce à l'utilisation de deux commutateurs de courant alternatif, et en permettant une commande très précise d'une tension de sortie du régulateur automatique de tension. La présente invention comprend : un filtre LC pour lisser une entrée en tension alternative sous une forme d'impulsion continue, et pour générer et délivrer une tension alternative qui a la même forme que celle d'une tension d'entrée mais a un niveau inférieur à la tension d'entrée ; un premier commutateur de courant alternatif pour commuter la tension d'entrée selon un premier signal de commande, et pour générer l'entrée en tension alternative dans la forme d'impulsion continue, de façon à fournir la tension alternative générée au filtre LC ; et un second commutateur de courant alternatif pour effectuer une commutation selon un second signal de commande dans chaque période dans laquelle le premier commutateur de courant alternatif est éteint, et pour fournir une boucle fermée en vue de réduire progressivement le courant circulant dans une bobine d'induction du filtre LC. 본 발명은 두 개의 교류 스위치를 이용하여 구조가 간단하고 비용이 저렴한 자동 전압 조정기를 구현하고 이의 출력전압을 매우 정밀하게 제어할 수 있도록 한 기술에 관한 것이다. 이러한 본 발명은, 연속되는 펄스 형태로 입력되는 교류전압을 평활하여, 입력전압에 비하여 레벨은 낮지만 그 입력전압과 동일한 형태의 교류전압을 생성하여 출력하는 LC 필터; 제1제어신호에 따라 상기 입력전압을 스위칭하여 상기 연속되는 펄스 형태로 입력되는 교류전압을 생성하여 상기 LC 필터에 공급하는 제1교류 스위치; 및 제1교류 스위치가 턴오프되는 주기마다 제2제어신호에 따라 스위칭 동작하여, 상기 LC 필터의 인덕터에 흐르던 전류를 서서히 감소시키기 위한 폐루프를 제공하는 제2교류 스위치를 포함하는 것을 특징으로 한다.