SUBSTATION POWER SUPPLY METHOD BASED ON ELECTRIC VEHICLE DISCHARGING RATE AND CHARGE-DISCHARGE DEVICE USING THE SAME

• Main Authors: OH SEUNG RYLE, HAN KI SUN, JU HYOUNG JUN, PARK MIN HAE, JOO BYOUNG SOO, JEONG MOON GYU, KIM YOUNG JU
• Format: Patent
• Language: English; Korean
• Published: 07.07.2023
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSPORTING; VEHICLES IN GENERAL

The present invention relates to a substation power supply method based on an electric automobile discharge rate and a power converter using the same. The substation power supply method based on the electric automobile discharge rate according to an embodiment of the present invention comprises the following steps of: calculating a first discharge rate slope and a first possible discharge time according to a result of performing first discharge for a certain period of a time for 'AC and DC power supply', based on correlation between a battery charge amount of the electric automobile and time information; comparing the first possible discharge time and an additional power supply securing time; and confirming whether a target discharge amount is reached by performing continuous discharge according to a comparison result. An objective of the present invention is to provide the substation power supply method based on the electric automobile discharge rate to discharge a charging power of an electric automobile battery to a substation's on-site power, and the power converter using the same. 본 발명은 전기자동차 방전속도 기반의 변전소 전원 공급 방법 및 이를 이용한 충방전기에 관한 것으로, 본 발명의 실시예에 따른 전기자동차 방전속도 기반의 변전소 전원 공급 방법은, 전기자동차의 배터리 충전량과 시간정보의 상관 관계를 기반으로, 'AC 및 DC 전원 공급'에 대해 일정시간 동안 1차 방전 실시 결과에 따른 제1 방전속도 기울기 및 제1 방전 가능시간을 계산하는 단계; 상기 제1 방전 가능시간과 추가 공급전원 확보시간을 비교하는 단계; 및 상기 비교 결과에 따라 연속 방전을 실시하여 방전량 목표치에 도달하는지를 확인하는 단계;를 포함한다.