【摘要】：為實(shí)現(xiàn)電動(dòng)汽車充放儲(chǔ)一體化電站中具有并聯(lián)、雙向運(yùn)行特性的功率變換系統(tǒng)多模式運(yùn)行,采用基于三層網(wǎng)絡(luò)架構(gòu)的集中控制體系,提出了一種集多種運(yùn)行模式控制于一體的統(tǒng)一控制策略。該策略下各功率變換單元可依據(jù)調(diào)度指令在V2G和獨(dú)立兩種運(yùn)行模式間靈活選取,同時(shí)結(jié)合單元充放電狀態(tài)、輸出視在功率和電池組荷電狀態(tài)實(shí)現(xiàn)了功率優(yōu)化分配。此外,針對(duì)模式切換過(guò)程中負(fù)載電壓和并網(wǎng)電流波動(dòng)機(jī)理進(jìn)行分析。在統(tǒng)一控制策略中提出并引入了一種基于內(nèi)環(huán)指令跟蹤、外環(huán)軟切換的雙環(huán)切換方法,實(shí)現(xiàn)了運(yùn)行模式間的無(wú)縫切換。仿真和實(shí)驗(yàn)結(jié)果驗(yàn)證了所提控制策略的可行性和有效性。
[Abstract]:In order to realize the multi-mode operation of power conversion system with parallel and bidirectional operation characteristics in electric vehicle charging and storage integrated power station, a centralized control system based on three-layer network architecture is adopted. In this paper, a unified control strategy is proposed, which integrates many kinds of operation mode control. Under this strategy, each power conversion unit can be selected flexibly between V2G and independent operation modes according to the scheduling instruction. At the same time, combined with the charge and discharge state of the unit, the output apparent power and the battery pack charge state can be allocated optimally. In addition, the fluctuation mechanism of load voltage and grid-connected current in the process of mode switching is analyzed. In the unified control strategy, a double-loop switching method based on inner loop instruction tracking and outer loop soft switching is proposed and introduced, which realizes seamless switching between running modes. Simulation and experimental results verify the feasibility and effectiveness of the proposed control strategy.
【作者單位】： 華中科技大學(xué)電氣與電子工程學(xué)院強(qiáng)電磁工程與新技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金(51477067) 光寶電力電子技術(shù)科研基金(PRC20161047)資助項(xiàng)目
【分類號(hào)】：U491.8
，

本文編號(hào)：2482162