Operation control method and system for a solar inverter of a 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, and achieve both tracking speed, improved energy utilization, and output voltage stability Effect

Active Publication Date: 2022-03-25
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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.

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

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Embodiment 1

[0191] 1. For family cars such as Figure 18 As shown, the areas where photovoltaic cells can be installed are divided into three groups according to the different illumination conditions on the surface. Among them, group a has the largest area. Assuming STC, the installed photovoltaic cells have an open-circuit voltage of 109V and a short-circuit current of 6.1A. The areas of groups b and c are the same, 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 formula (10), using the Newton iteration method, after four iterations, 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 of photovoltaic cells of group b and c are equivalent to 0.427Ω. Series internal resistance RSNB, C=0.279Ω.

[0193] 3. Suppose the acceptable time extension coe...

Embodiment 2

[0206] 1. For urban buses, the roof, left side, right side, front and rear of the vehicle that can be installed with photovoltaic cells are divided into 5 groups a, b, c, d, and e according to the different light conditions on the surface. 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. The areas of group b and group c are the same, 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 first-level reference voltage step size Δλ(k) as 5V, and the proportionality factor Taking 0.75, the value of the adjustment factor Ca...

Embodiment 3

[0216] For such as Figure 21 For the home photovoltaic system shown, the feasible implementation steps are:

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

[0218] 2 to 9 are the same as in the first embodiment, and the maximum power point tracking of the home 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 specifically relates to an operation control method and system for a solar inverter of a vehicle-mounted photovoltaic system. The system includes a microprocessor module, a photovoltaic battery module, a primary converter module and a secondary converter module. Based on the discharge characteristics of the vehicle, the illumination characteristics of the vehicle-mounted photovoltaic system, and the operability of ordinary vehicles converted into solar-charged vehicles, the photovoltaic cells on the surface of the vehicle body that are subjected to different illumination conditions are grouped and controlled by a primary converter to reduce mutual interference and achieve a single The power output power of the first-stage converter is maximized, and an improved control algorithm suitable for the lighting conditions of the car is adopted to achieve the maximum power output power of the first-stage converter. The second-stage converter and its adaptive control algorithm are then used to achieve stable and maximized output power. The feature of this new type of controller is that it is easy to combine with the vehicle-mounted photovoltaic system, which effectively improves the active power of the photovoltaic system, and the power output is easy to 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 of a solar energy converter of a vehicle-mounted photovoltaic system. Background technique [0002] Photovoltaic power generation technology and industry is not only an important supplement to today's energy, but also has the potential to become the main energy source in the future. In the long run, 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 world's rapidly and steadily developing emerging industries. Among them, solar photovoltaic power generation is a major high-tech industry that saves energy and advocates green power in the world. The development of photovoltaic industry has become one of the best ways for coun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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