System and method for using multiple fluctuating power supplies in parallel
A technology of fluctuating power and power supply, applied in the field of systems using multiple fluctuating power supplies in parallel, it can solve the problems of energy loss, equipment heating damage, and new energy power generation methods are not as stable as thermal power, and achieve the effect of avoiding circulation
Pending Publication Date: 2019-08-09
SOUTH CHINA UNIV OF TECH
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Problems solved by technology
Although the current new energy power generation method can achieve sufficient power and voltage levels on a single device, the problem is that the new energy power generation method is often not as stable as thermal power generation, and its power and voltage will fluctuate to a certain extent
If two or more unstable power supplies are directly connected in parallel, a circulating current will be formed between the power supplies when the voltage fluctuates, causing energy loss and heat damage to the equipment
Method used
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Embodiment
[0044] Such as figure 1 As shown, the present embodiment discloses a system using multiple fluctuating power supplies in parallel, so as to avoid circulation among multiple parallel connected power supplies when the power supply voltage is unstable, and to make the output voltage adjustable. Taking the parallel connection of wave energy power generation and photovoltaic power generation as an example, the system using multiple fluctuating power sources in parallel includes:
[0045] Two input circuits are arranged at each power output terminal, and each input circuit includes a rectification and filtering circuit 1 and an adjustable voltage stabilizing circuit 2 connected in sequence;
[0046] The control module based on the boost circuit is connected between the output terminal of each adjustable voltage stabilizing circuit 2 and the load 9, and is used to control the on-off of the real-time control circuit according to the real-time monitoring of the power and voltage of eac...
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The invention discloses a system and a method for using multiple fluctuating power supplies in parallel. The system comprises at least two input end circuits which are arranged at each power supply output end, wherein each input end circuit comprises a rectifying filter circuit and an adjustable voltage stabilizing circuit which are connected in sequence; and a control module based on a boost circuit which is connected between each adjustable voltage stabilizing circuit output end and a load and used for ensuring that there is no circulating current and the output voltage is adjustable and stable when all the power supplies are connected in parallel according to the on-off of the real-time monitoring and real-time control circuit for the power and the voltage of each power supply. Comparedwith the systems and the methods in the prior art, the method of real-time monitoring and real-time control by the full-control device is used so that the circulating current among multiple parallelpower supplies can be avoided when the power supply voltage is unstable and the output voltage is adjustable.
Description
technical field [0001] The invention relates to the field of new energy power generation, in particular to a system and method for using multiple fluctuating power sources in parallel. Background technique [0002] Since the outbreak of the energy crisis, new energy generation methods such as wave energy and solar energy have attracted more and more attention. Although the current new energy power generation method can achieve sufficient power and voltage levels on a single device, the problem is that the new energy power generation method is often not as stable as thermal power generation, and its power and voltage will fluctuate to a certain extent. If two or more unstable power supplies are directly connected in parallel, a circulating current will be formed between the power supplies when the voltage fluctuates, causing energy loss and heat damage to the equipment. Contents of the invention [0003] The main purpose of the present invention is to solve the above-menti...
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IPC IPC(8): H02J3/38H02M3/158H02M7/06
CPCH02J3/382H02M7/06H02M3/158
Inventor 黎俊文赵鼎杨金明吴俊晔黄钦雄李俊业李闻笛罗竞哲张桂江解博文张朝键尚文辉赵坚凯卢佳亮
Owner SOUTH CHINA UNIV OF TECH