ÇѱÛÁ¦¸ñ(Korean Title) |
ÀúÀü¾Ð ¿Àü¿¡³ÊÁö ÇϺ£½ºÆÃÀ» À§ÇÑ ÀúÀü·Â MPPT ÀÎÅÍÆäÀ̽º |
¿µ¹®Á¦¸ñ(English Title) |
A Low-Power MPPT Interface for Low-Voltage Thermoelectric Energy Harvesting Sources |
ÀúÀÚ(Author) |
±èÁø¿ì
ÀÌ»ó¿±
À¯Á¾±Ù
Jin-Woo Kim
Sang-Yeop Lee
Chong-Gun Yu
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¿ø¹®¼ö·Ïó(Citation) |
VOL 23 NO. 02 PP. 0319 ~ 0322 (2019. 10) |
Çѱ۳»¿ë (Korean Abstract) |
º» ³í¹®¿¡¼´Â ¿Àü¿¡³ÊÁö ÇϺ£½ºÆÃÀ» À§ÇÑ ÀúÀü·Â MPPT(Maximum Power Point Tracking) ÀÎÅÍÆäÀ̽º ȸ·Î¸¦ ¼³°èÇÏ¿´´Ù. Á¦¾ÈµÈ ȸ·Î´Â Å©°Ô MPPT controller¿Í bias generator·Î ±¸¼ºµÈ´Ù. MPPT controller´Â MPP Àü¾Ð »ý¼º¿¡ ÇÊ¿äÇÑ ÆÞ½º¸¦ ¹ß»ý½ÃÅ°´Â MPG(MPPT Pulse Generator) ȸ·Î¿Í ¿Àü¿¡³ÊÁö ÀÔ·ÂÀÇ °³¹æȸ·Î Àü¾Ð samplingÀ» À§ÇÑ sample/hold ȸ·Î·Î ±¸¼ºµÈ´Ù. Bias generator´Â beta multiplier¿Í 3°³ÀÇ MOSFET ½ºÀ§Ä¡·Î ±¸¼ºµÈ start-up ȸ·Î¸¦ ÀÌ¿ëÇÏ¿© ¼³°èµÇ¾ú´Ù. Á¦¾ÈµÈ ȸ·Î´Â 0.35§ CMOS °øÁ¤À¸·Î ¼³°èµÇ¾úÀ¸¸ç, ¼³°èµÈ ȸ·ÎÀÇ Ä¨ ¸éÀûÀº 817§ ¡¿ 705§ ÀÌ´Ù. ¸ðÀǽÇÇè °á°ú ¼³°èµÈ ȸ·Î´Â 200mV À̳»ÀÇ ÀÛÀº ÀÔ·ÂÀü¾Ð ¹üÀ§¿¡¼µµ Á¤»ó µ¿ÀÛÇϸç, 190nA À̳»ÀÇ Àü·ù¸¦ ¼Ò¸ðÇÏ°í, ÃÖ´ë Àü·ÂÈ¿À²Àº 95.0%ÀÌ´Ù. |
¿µ¹®³»¿ë (English Abstract) |
In this paper a low-power MPPT(Maximum Power Point Tracking) interface is designed for low-voltage thermoelectric energy harvesting sources. The proposed circuit consists of an MPPT controller and a bias generator. The MPPT controller consists of an MPG(MPPT Pulse Generator) circuit to generate a pulse signal for MPP voltage generation and a sample/hold circuit to sample the open-circuit voltage of a thermoelectric input device. The bias generator is designed by employing a beta multiplier structure and a start-up circuit consisting of three MOSFET switches. The proposed circuit is designed with 0.35§ CMOS process, and the chip area of the designed circuit is 817§ ¡¿ 705§. The simulation results show that the designed circuit operates properly at an input voltage of less than 200mV, consumes less than 190nA of current, and achieves a maximum power conversion efficiency of 95.0%. |
Å°¿öµå(Keyword) |
Energy harvesting
MPPT controller
Low power
Thermoelectric energy source
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