阅读说明：本技术 一种无需电流检测的航天器太阳能功率调节模块均流方法 (A kind of spacecraft solar power adjustment module current equalizing method without current detecting ) 是由 张晓峰 刘治钢 马亮 张明 张文佳 夏宁 朱立颖 石海平 陈燕 汪静 于 2019-07-05 设计创作，主要内容包括：本发明提供了一种无需电流检测的航天器太阳能功率调节模块均流方法,包括以下步骤：S1、设计并联运行的太阳能功率调节模块；S2、对并联运行的太阳能功率调节模块的输出电流量进行间接提取；S3、均流控制,利用太阳能电池的功率曲线的特性,均流控制只存在于太阳能功率调节模块的稳压模式,而稳压模式时太阳能阵列工作在功率曲线最大功率点右侧,控制太阳电池阵的工作点电压即可控制输出功率均衡,即电流均衡,完成均流。本发明的有益效果是：采用直接引入太阳能阵列工作电压的方法实现均流控制,无需检测太阳能功率调节模块输出电流,从而可以规避复杂的电流检测电路,使均流控制简单、可靠,同时成本也相对较低。(The present invention provides a kind of spacecraft solar power adjustment module current equalizing methods without current detecting, comprising the following steps: S1, the solar power adjustment module for designing parallel running；S2, the output current of the solar power adjustment module of parallel running is extracted indirectly；S3, sharing control, utilize the characteristic of the power curve of solar battery, sharing control exists only in the potentiostatic mode of solar power adjustment module, and solar array work is on the right side of power curve maximum power point when potentiostatic mode, the i.e. controllable output power of quiescent potential for controlling solar battery array is balanced, that is current balance, completion are flowed.The beneficial effects of the present invention are: realizing sharing control using the method for being introduced directly into solar array operating voltage, without detecting solar power adjustment module output electric current, so as to evade complicated current detection circuit, it is simple, reliable to make sharing control, while cost is relatively low.)

1. a kind of spacecraft solar power adjustment module current equalizing method without current detecting, which is characterized in that including following Step:

S1, the solar power adjustment module for designing parallel running, solar power adjustment module is for realizing solar power It adjusts, is converted using buck, solar array quiescent potential is higher than busbar voltage or is lower than busbar voltage, in solar energy When underpower, solar power adjustment module works in maximal power tracing state, and solar array is made to work in power song Line maximum power point；In solar power affluence, solar power adjustment module works in pressure stabilizing state, makes solar array It works on the right side of power curve maximum power point；

S2, the output current of the solar power adjustment module of parallel running is extracted indirectly, due to solar power Directly in parallel between adjustment module, then the output voltage of each solar power adjustment module is identical, if each solar power adjusts mould Block electric current is consistent, then each solar power adjustment module output power is consistent, for solar array, each solar power Unanimously then solar array quiescent potential is consistent for adjustment module output power, by the output electric current of solar power adjustment module Amount detection is converted into the detection of input voltage amount；

S3, sharing control, using the characteristic of the power curve of solar battery, sharing control exists only in solar power adjusting The potentiostatic mode of module, and solar array work is on the right side of power curve maximum power point when potentiostatic mode, control sun electricity The i.e. controllable output power of the quiescent potential of Chi Zhen is balanced, i.e. current balance, completion is flowed.

2. the spacecraft solar power adjustment module current equalizing method according to claim 1 without current detecting, special Sign is: in step sl, solar power adjustment module is adjusted to using Buck-Boost topology, solar cell array boosting Bus or reduction regulation are to bus, in solar power deficiency, solar power adjustment module work in maximum power with Track state makes solar array work in power curve maximum power point；In solar power affluence, solar power is adjusted Module works in pressure stabilizing state, works in solar array on the right side of power curve maximum power point.

3. the spacecraft solar power adjustment module current equalizing method according to claim 1 without current detecting, special Sign is: in step s 2, when solar power adjustment module works in maximum power point, each solar power adjustment module Equal flow problem is not present in equal maximum power output, and therefore, equal flow problem pertains only to pressure stabilizing operating mode, in pressure stabilizing operating mode Under, then output power balances each solar power adjustment module output current balance type, and then each solar power adjustment module is defeated Enter power-balance, and in solar array work on the right side of power curve maximum power point, output power and solar array There is fixed monotonic functional relationship in quiescent potential, be based on the monotonic functional relationship, solar power adjustment module is exported The detection of electric current is converted into the detection to input voltage.

4. the spacecraft solar power adjustment module current equalizing method according to claim 1 without current detecting, special Sign is: in step s3, when solar array output voltage is higher than maximum power point voltage, work is in power curve maximum On the right side of power points, solar array output voltage is higher, and output power is lower, when solar array output voltage is higher, mentions The reference voltage of high solar power conditioning module, i.e. introducing solar array output voltage to solar power adjustment module are joined The feedforward for examining voltage solves the reference of each solar power adjustment module by the linear transformation of solar array output voltage Voltage value, to realize that power-balance and the output of each solar power adjustment module are flowed.

Technical field

The present invention relates to spacecraft power supply system more particularly to a kind of spacecraft solar power tune without current detecting Save module current equalizing method.

Background technique

Spacecraft power supply system mostly uses the generation mode of solar battery array to obtain the energy, the power of solar array Output passes through small-power sun power for large-power solar-energy electricity-generating system to bus after power conditioning module is handled Adjustment module parallel running, providing high-power output to bus is common technical solution.

Low-power system parallel running has more advantage in practical applications, and one side low-power system is easily integrated and adjusts Examination, and powerful output can be realized by parallel connection；On the other hand single module in parallel breaks down, and does not influence other The normal work of power supply module, so that the reliability of whole system greatly promotes.

Although low-power system parallel running is with the obvious advantage, can wherein it have a problem that, i.e., in actual production It can not accomplish that modules in parallel are completely the same, then since external characteristics difference will lead to current distribution after these wired in parallel Unevenness, the good receiving electric current of external characteristics overloads system for a long time and easily damaged more, and the then output electric current of external characteristics difference is less, Cause system underloading even unloaded, effect cannot play, and entire parallel system load is inconsistent, and it is uneven in temperature, it eventually leads to The reduction of whole system reliability, the lost of life can not work.

Therefore, effective current equalizing method must be used in the system of multi-channel parallel, the electric current to guarantee modules is equal Weighing apparatus, improves the reliability and stability of system.

In general current balance is realized, it is necessary to the current value for detecting each module, it is negative anti-by sagging control etc. The control method dynamic regulation of feedback, it is final to realize that output electric current is consistent.High-precision current detecting is usually using series connection sampling electricity The method of resistance or hall device, compared to voltage detecting, current detecting is there are circuit complexity, and reliability is low in extreme circumstances, At high cost, the disadvantages of cost is big, safety is poor.

Summary of the invention

In order to solve the problems in the prior art, the present invention provides a kind of spacecraft solar energy function without current detecting Rate adjustment module current equalizing method, during the solar power adjustment module sharing control to solve parallel running, magnitude of current inspection The shortcomings that surveying, at high cost, poor reliability complicated compared to voltage detection bring circuit, the more succinct equal flow control of realization System.

The present invention provides a kind of spacecraft solar power adjustment module current equalizing methods without current detecting, including with Lower step:

S1, the solar power adjustment module for designing parallel running, solar power adjustment module is for realizing solar energy Power regulation is converted using buck, and solar array quiescent potential is higher than busbar voltage or is lower than busbar voltage, too When positive energy underpower, solar power adjustment module works in maximal power tracing state, and solar array is made to work in function Rate curve maximum power point；In solar power affluence, solar power adjustment module works in pressure stabilizing state, makes solar energy Array works on the right side of power curve maximum power point；

S2, the output current of the solar power adjustment module of parallel running is extracted indirectly, due to solar energy Directly in parallel between power conditioning module, then the output voltage of each solar power adjustment module is identical, if each solar power tune Section blocks current is consistent, then each solar power adjustment module output power is consistent, for solar array, each solar energy Unanimously then solar array quiescent potential is consistent for power conditioning module output power, by the output of solar power adjustment module Magnitude of current detection is converted into the detection of input voltage amount；

S3, sharing control, using the characteristic of the power curve of solar battery, sharing control exists only in solar power The potentiostatic mode of adjustment module, and solar array work is on the right side of power curve maximum power point when potentiostatic mode, control is too The i.e. controllable output power of the quiescent potential of positive cell array is balanced, i.e. current balance, completion is flowed.

As a further improvement of the present invention, in step sl, solar power adjustment module is opened up using Buck-Boost It flutters, solar cell array boosting is adjusted to bus or reduction regulation to bus, in solar power deficiency, solar power Adjustment module works in maximal power tracing state, and solar array is made to work in power curve maximum power point；In solar energy When power affluence, solar power adjustment module works in pressure stabilizing state, and solar array is made to work in power curve maximum work On the right side of rate point.

As a further improvement of the present invention, in step s 2, when solar power adjustment module works in maximum power When point, equal flow problem is not present in each equal maximum power output of solar power adjustment module, and therefore, equal flow problem pertains only to surely Operating mode is pressed, under pressure stabilizing operating mode, then output power balances each solar power adjustment module output current balance type, into And each solar power adjustment module input power balance, and it is right in power curve maximum power point in solar array work There is fixed monotonic functional relationship in side, output power and solar array quiescent potential, be based on the monotonic functional relationship, The detection to input voltage is converted by the detection of solar power adjustment module output electric current.

As a further improvement of the present invention, in step s3, solar array output voltage is higher than maximum power point electricity When pressure, work is on the right side of power curve maximum power point, and solar array output voltage is higher, and output power is lower, too When sun energy array output voltage is higher, the reference voltage of solar power adjustment module is improved, i.e. the output of introducing solar array The feedforward of voltage to solar power adjustment module reference voltage is solved by the linear transformation of solar array output voltage The reference voltage value of each solar power adjustment module, power-balance and the output to realize each solar power adjustment module are equal Stream.

The beneficial effects of the present invention are: sharing control is realized using the method for being introduced directly into solar array operating voltage, Make sharing control without detecting solar power adjustment module output electric current so as to evade complicated current detection circuit Simply, reliably, while cost is relatively low.

Detailed description of the invention

Fig. 1 is the structure chart of the spacecraft solar power adjustment module of parallel running.

Fig. 2 is the topological circuit figure of solar power adjustment module.

Fig. 3 is the power graph of solar battery.

Specific embodiment

The invention will be further described for explanation and specific embodiment with reference to the accompanying drawing.

A kind of spacecraft solar power adjustment module current equalizing method without current detecting, comprising the following steps:

S1, the solar power adjustment module for designing parallel running, solar power adjustment module is for realizing solar energy Power regulation is converted using buck, and solar array quiescent potential is higher than busbar voltage or is lower than busbar voltage, too When positive energy underpower, solar power adjustment module works in maximal power tracing state, and solar array is made to work in function Rate curve maximum power point；In solar power affluence, solar power adjustment module works in pressure stabilizing state, makes solar energy Array works on the right side of power curve maximum power point；

S2, the output current of the solar power adjustment module of parallel running is extracted indirectly, due to solar energy Directly in parallel between power conditioning module, then the output voltage of each solar power adjustment module is identical, if each solar power tune Section blocks current is consistent, then each solar power adjustment module output power is consistent, for solar array, each solar energy Unanimously then solar array quiescent potential is consistent for power conditioning module output power, by the output of solar power adjustment module Magnitude of current detection is converted into the detection of input voltage amount；

S3, sharing control, using the characteristic of the power curve of solar battery, sharing control exists only in solar power The potentiostatic mode of adjustment module, and solar array work is on the right side of power curve maximum power point when potentiostatic mode, control is too The i.e. controllable output power of the quiescent potential of positive cell array is balanced, i.e. current balance, completion is flowed.

In step sl, solar power adjustment module is adjusted using Buck-Boost topology, solar cell array boosting To bus or reduction regulation to bus, in solar power deficiency, solar power adjustment module works in maximum power Tracking mode makes solar array work in power curve maximum power point；In solar power affluence, solar power tune Section module works in pressure stabilizing state, works in solar array on the right side of power curve maximum power point.

In step s 2, when solar power adjustment module works in maximum power point, each solar power adjusts mould Equal flow problem is not present in the equal maximum power output of block, and therefore, equal flow problem pertains only to pressure stabilizing operating mode, in pressure stabilizing Working mould Under formula, then output power balances each solar power adjustment module output current balance type, and then each solar power adjustment module Input power balance, and in solar array work on the right side of power curve maximum power point, output power and solar energy battle array There is fixed monotonic functional relationship in column quiescent potential, be based on the monotonic functional relationship, and solar power adjustment module is defeated The detection of electric current is converted into the detection to input voltage out.

In step s3, solar array output voltage be higher than maximum power point voltage when, work power curve most On the right side of high-power point, solar array output voltage is higher, and output power is lower, when solar array output voltage is higher, The reference voltage of solar power adjustment module is improved, i.e. introducing solar array output voltage to solar power adjustment module The feedforward of reference voltage solves the ginseng of each solar power adjustment module by the linear transformation of solar array output voltage Voltage value is examined, to realize that power-balance and the output of each solar power adjustment module are flowed.