Online disturbance generation detection system and method of series power supply system

Abstract

The invention discloses an online disturbance generation detection system and method for a series power supply system. The system comprises a series module unit and a load power supply or other power electronic devices, the M series module units are sequentially connected in series, wherein M is greater than or equal to 1; when the number of the series module units is larger than or equal to two, the Vin end of the nth series module unit is connected with the Vout end of the (n+1)th series module unit, and n is larger than or equal to 1 and smaller than or equal to (M-1); and a load, a power supply or other power electronic devices are connected to the Vout end of the first series module unit and the Vin end of the Mth series module unit. The working current or voltage of the series power supply system in the working process serves as a disturbance object and also serves as a disturbance source, the working current or voltage of the series module unit is changed corresponding to a disturbance signal through the action of the disturbance device, and the response of the detected object to disturbance is detected through real-time voltage and current sampling.

Description

technical field [0001] The invention belongs to the technical field of on-line disturbance detection of a power supply system, and in particular relates to a system and method for on-line disturbance detection of a series power supply system. Background technique [0002] With the increasing pressure on the environment caused by traditional energy and transportation industries, the country and society have increasingly strong demands for new energy power and new energy transportation. The promulgation of various policies has also promoted the rapid development of the new energy industry. [0003] In the new energy power and transportation industries, a large number of clean energy sources are used to provide power supply. For example, in the photovoltaic power generation system, photovoltaic modules are used as the power source for power generation; in electric vehicles, lithium-ion batteries are used as the vehicle power source; hydrogen fuel cell engines, which are the ul...

AI Technical Summary

Problems solved by technology

Since the frequency range is often wide, it takes a lot of time to generate trace signals in a wide frequency range due to the huge cost of equipment and the limited number of channels that can be detected

At the same time, due to the inability to detect online, the problems existing in the power supply unit cannot be found in real time, and there is a huge risk of missed detection

Due to the need for offline detection, the series power supply system will not work normally and will cause loss of revenue, especially in the fields of new energy vehicles, etc. It is not allowed, or repeated resource investment is required to ensure the uninterrupted power supply of the system, the system costs will multiply

Images