太陽能正負脈衝動態分配電池管理系統;Battery Management System of Photovoltaic Dynamic Allocation Positive/Negative pulse

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题名:	太陽能正負脈衝動態分配電池管理系統;Battery Management System of Photovoltaic Dynamic Allocation Positive/Negative pulse
作者:	曾柏宬;Zeng, Bo-Cheng
贡献者:	光電科學與工程學系
关键词:	鉛酸電池;正負脈衝充電;總線電源;動態分配;lead acid;positive/negative pulse charge;power bus;dynamic allocation
日期:	2020-07-21
上传时间:	2020-09-02 15:34:48 (UTC+8)
出版者:	國立中央大學
摘要:	本研究主要目的為建立一套可調式正負脈衝動態分配式電池充放電系統，應用於太陽能總線電源系統中，藉由軟硬體的配合，可達到應對太陽能晝夜變化、天候烏雲變化之影響。本系統設計對象為12V之鉛酸電池，系統中包含充放電迴路，搭配總線電源可擴充式的優點，可均衡分配各鉛酸電池中的電量。本系統以PIC18F4520微處理器為核心來進行系統的數位控制，充電管理利用偵測電路偵測總線電源電壓，並可經由比對太陽光的強弱輸入條件，搭配正負脈衝進行充電優化，電池放電管理採用偵測負載大小，以此作為PWM的控制基準，降低整體輸出的能量損失。經實驗後，在充電部分，採用變頻式脈衝充電相較2於定頻脈衝充電效率最少提升5%，在供給負載方面，能量轉換率可達86%。 ;The main purpose of this study was to establish an adjustable positive/negative pulse dynamic distribution of battery charging and discharging system, which is applied to the solar power bus system.With the cooperation of hardware and software, it can counter the effects of weather and diurnal fluctuation. The design object of this system is a 12V lead-acid battery. The system includes a charge and discharge circuit.With the advantages of power bus, it can evenly distribute the power in each lead-acid battery. This system uses the PIC18F4520 microprocessor as the core to perform digital control of the system. The management of charge uses the detection circuit to detect the power bus voltage,and it can optimize the charging by comparing the input conditions of sunlight with positive/negative pulses. The management of battery discharge uses the detected load as a PWM control reference to reduce the loss of output energy. After the experiment, in the charging part, the efficiency of VFPCS is at least 5% higher than the efficiency of FFVPS, and the energy conversion rate can reach 86% in terms of supplying the load.
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