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Operation control method and system for solar converter of vehicle-mounted photovoltaic system

A photovoltaic system and operation control technology, applied in photovoltaic power generation, control/regulation systems, instruments, etc., can solve problems such as inability to adapt to vehicle-mounted photovoltaic systems

Active Publication Date: 2019-08-09
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0044] The purpose of the present invention is to provide an operation control method and system for a vehicle-mounted photovoltaic system solar inverter, so as to solve the problems that the solar inverter in the prior art cannot adapt to the vehicle-mounted photovoltaic system.

Method used

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  • Operation control method and system for solar converter of vehicle-mounted photovoltaic system
  • Operation control method and system for solar converter of vehicle-mounted photovoltaic system

Examples

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Embodiment 1

[0191] 1. For family cars such as Figure 18 As shown in , according to the different illumination conditions of the surface, the areas where photovoltaic cells can be installed are divided into 3 groups. Among them, group a has the largest area. Assuming STC, the open circuit voltage of the installed photovoltaic cells is 109V, and the short circuit current is 6.1A. Groups b and c have the same area, assuming that the installed photovoltaic cells have an open circuit voltage of 70V and a short circuit current of 5.08A.

[0192] 2. According to the formula (10), the Newton iterative method is used to calculate the equivalent series internal resistance RSNA=0.427Ω of the photovoltaic cells of group a under the condition of STC when the photovoltaic cells leave the factory, and the equivalent series resistance of the photovoltaic cells of groups b and c Series internal resistance RSNB, C=0.279Ω.

[0193] 3. Assuming that the acceptable time extension coefficient γ is 170%, the...

Embodiment 2

[0206] 1. For urban buses, according to the different lighting conditions on the surface, the roof, left side of the vehicle, right side of the vehicle, front and rear of the vehicle that can be installed with photovoltaic cells are divided into five groups: a, b, c, d, and e. In the case of STC, group a has the largest area, assuming that the installed photovoltaic cells have an open-circuit voltage of 200V and a short-circuit current of 6A. Groups b and c have the same area, assuming that the installed photovoltaic cells have an open circuit voltage of 100V and a short circuit current of 5A. The open circuit voltage of group d is 40V, and the short circuit current is 4A. The open circuit voltage of group e is 30V, and the short circuit current is 4A.

[0207] 2 is the same as the first embodiment.

[0208] 3. Set the acceptable time extension factor γ as 190%, the primary reference voltage step size Δλ(k) as 5V, and the proportional coefficient Take 0.75, then the value ...

Embodiment 3

[0216] For such as Figure 21 The feasible implementation steps of the household photovoltaic system shown are:

[0217] 1. Divide the two sides of the roof into two groups according to the different lighting conditions on the surface. Since the area of ​​the roof is much larger than the area of ​​a single photovoltaic cell, two groups of photovoltaic cells are formed by cascading multiple sets of photovoltaic cells.

[0218] 2 to 9 are the same as the first embodiment, and the maximum power point tracking of the household photovoltaic system can still be performed to maximize the power output efficiency.

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Abstract

The invention belongs to the field of photovoltaic power generation, and particularly relates to an operation control method and system for a solar converter of a vehicle-mounted photovoltaic system.The system comprises a microprocessor module, a photovoltaic cell module, a first-stage converter module and a second-stage converter module. According to the discharge characteristics of a photovoltaic cell, the illumination characteristic of the vehicle-mounted photovoltaic system and the operability of refitting a common automobile into a solar charging automobile are improved, and the photovoltaic cells on the surface of an automobile body under different illumination conditions are subjected to grouping control through a first-stage converter to reduce mutual interference, thereby achieving the maximization of power output power of the first-stage converter. An improved control algorithm suitable for the illumination condition of the automobile is adopted to achieve maximum power output power of the first-stage converter; and the stable and maximized output power is realized by adopting a secondary converter and an adaptive control algorithm thereof. The novel controller has the characteristics that the controller can be conveniently combined with the vehicle-mounted photovoltaic system, the active power of the photovoltaic system is effectively improved, and the power outputis convenient to regulate and control.

Description

technical field [0001] The invention belongs to the field of photovoltaic power generation, and in particular relates to an operation control method and system for a solar converter of a vehicle-mounted photovoltaic system. Background technique [0002] Photovoltaic power generation technology and industry are not only an important supplement to today's energy sources, but also have the potential to become the main source of energy in the future. In the long run, the utilization of solar energy has the best prospects and the greatest potential. In the past 30 years, solar energy utilization technology has made great progress in research and development, commercial production, and market development, and has become one of the emerging industries with rapid and stable development in the world. Among them, solar photovoltaic power generation is a major high-tech industry that saves energy and advocates green power in the world. Developing the photovoltaic industry has become ...

Claims

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Application Information

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IPC IPC(8): H02J7/35G05F1/67
CPCH02J7/35G05F1/67Y02E10/56
Inventor 周熙炜孙成浩赵祥模汪贵平闫茂德李登峰林海蒙一扬陈勇
Owner CHANGAN UNIV
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