Research on photovoltaic grid-connected inverter with maximum power point tracking 采用最大功率點跟蹤的光伏并網(wǎng)逆變器研究
Research of domestic photovoltaic charging system with maximum power point tracing 具有最大功率點跟蹤功能的戶用光伏充電系統(tǒng)的研究
Research on maximum power point tracking control based on a dsp-controlled grid-connected photovoltaic inverter 雙支路光伏最大功率跟蹤的并網(wǎng)逆變器的研制
Mppt ( maximum power point tracking ) is one of the most important and well-known problem for all pv systems mppt(最大功率點跟蹤)是光伏系統(tǒng)中經(jīng)常遇見的問題。
The functions which pv system controllers need to have are discussed in theory too, such as controlling of charging and discharging, adaptation of orientation and position of solar cell, maximum power point tracking ( mppt ) 本文還從理論上探討了光伏系統(tǒng)控制器應具有的功能:對蓄電池充放電的控制,對太陽方位和高度的跟蹤,對太陽能電池最大功率點的跟蹤。
The paper proposes a method that combines " mass law "-- acceptable charging current with technology of solar photovoltaic array's maximum power point tracking in stand-alone photovoltaic system . it realizes a efficient charging management of vrla storage battery . and fuzzy hierarchical control technology is applied to the depolarization control 提出在獨立光伏系統(tǒng)中采用“馬斯定律”可接受充電電流和太陽能光伏陣列最大功率跟蹤相結合的方法,對系統(tǒng)中vrla蓄電池進行高效充電管理,并采用模糊遞階控制技術來實現(xiàn)去極化控制,實現(xiàn)系統(tǒng)能量最大利用。
At the same time, the principle which taking searching motor maximum-speed point as control object for mppt ( maximum power point tracking ) is put forward and the static error of tracking is analyzed in detail . chip jl3, a kind of micro-controllers of 68hc08 series, is used as control unit of the system, with which we complete the designs of the periphery hardware circuit and the control software 對于電機控制,提出了采用虛擬中心點的方法代替?zhèn)鞲衅鲗崿F(xiàn)電機轉子位置檢測,以完成電機準確換相,并在理論上證明了其正確性;對于光伏陣列工作點最大功率跟蹤問題,提出了一種以尋求轉速最大點為控制目標實現(xiàn)tmppt的思想,并進行了穩(wěn)態(tài)跟蹤誤差分析。
The ic modulation circuits and microprocessor are used in the control unit . on the side of input of inverter, the maximum power point tracking of solar module is well realized by using a kind of thought of self-optimizing control; on the side of output of the inverter, a kind of approximate optimum v / f control strategy is used in order to optimize the match between the output of the inverter and load of motor-pump 在逆變器輸入側,采用自尋優(yōu)控制思想實現(xiàn)太陽能電池最大功率點跟蹤(mppt);在輸出側,采用了v/f近似優(yōu)化的控制策略,以優(yōu)化逆變器輸出與機泵負載之間的匹配。