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Maximum power tracking control device

A tracking control, maximum power technology, applied in control/regulation systems, regulating electrical variables, instruments, etc., can solve problems such as large voltage changes, slow tracking speed, and affecting power generation efficiency

Inactive Publication Date: 2008-02-27
ORMON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of a power generator, for example, it takes a long time for the power point to reach the maximum power point by the conventional hill-climbing method only due to the slow tracking speed, which is caused by the power change as shown in Figure 19B. The voltage variation at the maximum power point is relatively large, raising concerns about severely affecting power generation efficiency during this period

Method used

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Examples

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no. 1 example

[0065] Fig. 1 is a block diagram showing the internal arrangement of a discrete power generation system of a first embodiment.

[0066] Discrete power generation system 1 as shown in Figure 1 comprises: generator 2, in order to produce direct current; Power conditioner 10, has the power conversion function that the direct current that generator 2 produces is converted into alternating current; Consumer electronic devices driven by the DC power converted in the regulator 10 ; and a system 4 , such as a commercial power supply that provides additional DC power to the load 3 . From this aspect, when the load 3 is powered by the power conditioner 10, when the output power of the power conditioner 10 is lower than the driving power of the load 3, in addition to being powered by the power conditioner 10, the load 3 is also powered by the system 4 powered by.

[0067] The power conditioner 10 shown in Figure 1 includes: a power converter 11, which is used to convert the direct curre...

no. 2 example

[0154] FIG. 12 is a block diagram showing the internal arrangement of the control section 27 of the power conditioner 10 related to the second embodiment. In this respect, those elements that are equivalent to those of the discrete power generation system 1 of the first embodiment are marked with the same reference numerals, and thus descriptions of redundant settings and operations are omitted.

[0155] Control part 27 as shown in Figure 12 comprises: voltage value calculating part 31, voltage value setting part 32, threshold value judging part 33, tracking control part 34, mountain-climbing method tracking control part 35, and also comprise approximation function correcting part 36, This part corrects the error of the approximation function stored in the approximation function memory 25 by tracking the hill climbing of the control part 35 using the hill climbing method.

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Abstract

A power conditioner 10 is provided with a maximum power follow-up control portion 12 for setting a DC operating voltage of a power converter 11, which converts output power of a power generator 2 into AC power, for making a power point corresponding to the output level of the power generator follow up with a maximum power point, and comprises an approximate function memory 25 for storing approximate functions related to the maximum power point, a follow-up control portion 34 for making the present power point reach proximate of the maximum power point on the basis of the approximate function, and a hill-climbing method follow-up control portion 35 for making the present power point reach the maximum power point by using a hill-climbing method when the present power point has reached proximate of the maximum power point.

Description

technical field [0001] The present invention relates to a maximum power tracking control device, wherein a generator for generating direct current, such as a hydroelectric generator or a wind generator, is included in a discrete power generation system, and a generator for converting the direct current of the generator into AC power, and a power conditioning device for supplying the converted AC power to the system or others (hereinafter referred to simply as "power conditioner"), the optimum power generation efficiency corresponding to the output characteristics of the generator can be Obtained internally by the power conditioner. Background technique [0002] In general, various systems such as hydroelectric power generation systems, wind power generation systems, solar power generation systems, or gas engine power generation systems are called discrete power generation systems. [0003] Such a discrete power generation system is provided as a system in which DC power gen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/67H02M7/48
CPCG05F1/67
Inventor 中村耕太郎马渕雅夫细见伸一久志博信
Owner ORMON CORP
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