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 the 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.