CN104868578A - Device and method for power system MPPT control for satellite - Google Patents

Device and method for power system MPPT control for satellite Download PDF

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CN104868578A
CN104868578A CN201510316576.3A CN201510316576A CN104868578A CN 104868578 A CN104868578 A CN 104868578A CN 201510316576 A CN201510316576 A CN 201510316576A CN 104868578 A CN104868578 A CN 104868578A
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mppt control
solar battery
power
lithium
battery array
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林晓辉
周明中
蔡晟
杨军武
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Harbin Institute of Technology Shenzhen
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Harbin Institute of Technology Shenzhen
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers

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Abstract

The invention provides a device and a method for power system MPPT control for a satellite, and solves a problem that an existing power system used for a satellite is difficult to track maximum power of a microsatellite. The forward power signal output end of a solar cell array is connected with the anode of a first diode, the cathode of the first diode is connected with the power tracking signal input end of a MPPT control circuit, the cathode of a second diode, and the forward power signal input end of a load. The power signal output end of the MPPT control circuit is connected with the anode of a second diode and the anode of a lithium ion battery pack. The cathode of the lithium ion battery pack is connected with ground. The negative power signal output end of the solar cell array is connected with the negative power signal input end of the load and ground at the same time. The device and the method are suitable for power system control used for satellites.

Description

一种卫星用电源系统MPPT控制装置及方法A MPPT control device and method for a satellite power supply system

技术领域technical field

本发明涉及空间电源技术领域，具体涉及一种卫星用电源系统控制装置。The invention relates to the field of space power supply technology, in particular to a control device for a satellite power supply system.

背景技术Background technique

微小卫星电源系统设计的先进思想是模小型化、集成化。同时，近年来微小卫星对电源分系统提出了技术性能高、灵活性强、成本低、重量轻和体积小的目标。但是现有的卫星用电源系统存在对微小卫星最大功率追踪的困难的问题。The advanced idea of micro-satellite power system design is miniaturization and integration. At the same time, in recent years, microsatellites have put forward the goals of high technical performance, strong flexibility, low cost, light weight and small volume for the power supply subsystem. However, the existing power supply system for satellites has the problem of difficulty in tracking the maximum power of micro-satellites.

发明内容Contents of the invention

本发明是为了解决现有的卫星用电源系统存在对微小卫星最大功率追踪的困难的问题，提出了一种卫星用电源系统MPPT控制装置及方法。The invention aims to solve the problem that the existing satellite power supply system has difficulty in tracking the maximum power of micro-satellites, and proposes a satellite power supply system MPPT control device and method.

本发明所述的一种卫星用电源系统MPPT控制装置，它包括太阳能电池阵列、MPPT控制电路、一号二极管、二号二极管和锂离子蓄电池组；A kind of satellite power supply system MPPT control device of the present invention, it comprises solar cell array, MPPT control circuit, No. 1 diode, No. 2 diode and lithium-ion accumulator group;

太阳能电池阵列的正向电源信号输出端连接一号二极管的阳极，一号二极管的阴极同时连接MPPT控制电路功率追踪信号的输入端、二号二极管的阴极和负载的正向电源信号输入端，MPPT控制电路的电源信号输出端同时连接二号二极管的阳极和锂离子蓄电池组的正极，锂离子蓄电池组的负极接地，太阳能电池阵列的负向电源信号输出端同时连接负载的负向电源信号输入端和地。The positive power signal output terminal of the solar cell array is connected to the anode of the first diode, and the cathode of the first diode is connected to the input terminal of the power tracking signal of the MPPT control circuit, the cathode of the second diode and the forward power signal input terminal of the load, MPPT The power signal output terminal of the control circuit is connected to the anode of the second diode and the positive pole of the lithium-ion battery pack at the same time, the negative pole of the lithium-ion battery pack is grounded, and the negative power signal output terminal of the solar cell array is connected to the negative power signal input terminal of the load at the same time peacefully.

太阳能电池阵列首先为负载供电，当太阳能电池阵列为卫星的负载供电后还存在多余的电量时，同时为锂离子蓄电池组供电；The solar cell array first supplies power to the load, and when there is still excess power after the solar cell array supplies power to the load of the satellite, it supplies power to the lithium-ion battery pack at the same time;

锂离子蓄电池组用于跟踪太阳能电池阵列输出的最大功率；同时控制太阳能电池阵列是否为锂离子蓄电池组供电；The lithium-ion battery pack is used to track the maximum power output by the solar battery array; at the same time, it controls whether the solar battery array supplies power to the lithium-ion battery pack;

太阳能电池阵列通过一号二极管为负载供电；The solar array supplies power to the load through the first diode;

锂离子蓄电池组通过二号二极管为负载供电；The lithium-ion battery pack supplies power to the load through the second diode;

所述一号二极管和二号二极管均为隔离二极管。Both the first diode and the second diode are isolation diodes.

基于上述一种卫星用电源系统MPPT控制装置的卫星用电源系统控制方法，该方法为：Based on the above-mentioned satellite power system control method of a satellite power system MPPT control device, the method is:

采用MPPT控制电路追踪太阳能电池阵列输出的最大功率，获得太阳能电池阵列的最大电压和最大电流值；Use the MPPT control circuit to track the maximum power output by the solar cell array, and obtain the maximum voltage and maximum current value of the solar cell array;

当太阳能电池阵列的最大电压值大于充电阈值电压时，太阳能电池阵列输出的电流经MPPT控制电路为锂离子蓄电池组供电；When the maximum voltage value of the solar cell array is greater than the charging threshold voltage, the current output by the solar cell array supplies power to the lithium-ion battery pack through the MPPT control circuit;

当太阳能电池阵列的最大电压值等于充电阈值电压时，太阳能电池阵列只为负载供电；When the maximum voltage value of the solar battery array is equal to the charging threshold voltage, the solar battery array only supplies power to the load;

当太阳能电池阵列的最大电压值小于充电阈值电压时，锂离子蓄电池组输出电流与太阳能电池阵列同时为负载供电。When the maximum voltage value of the solar cell array is less than the charging threshold voltage, the output current of the lithium-ion battery pack and the solar cell array supply power to the load at the same time.

由于本发明所述的卫星用电源系统MPPT控制电路，MPPT(最大功率点跟踪”Maximum Power Point Tracking)控制电路串联在卫星母线与锂离子蓄电池之间，MPPT控制电路作为锂离子蓄电池组充电电路。为了提高电源系统可靠性，与传统MPPT控制装置相比，电源系统太阳电池阵通过隔离二极管直接给负载供电，MPPT控制电路作为充电电路，只需要主备份两套电路即可以保证整套电源系统控制的可靠性，卫星用电源系统MPPT控制电路少、成本低、器件少、重量轻，实现了对微小卫星最大功率追踪。Because the MPPT control circuit of the satellite power supply system according to the present invention, the MPPT (Maximum Power Point Tracking "Maximum Power Point Tracking) control circuit is connected in series between the satellite busbar and the lithium-ion storage battery, and the MPPT control circuit is used as the charging circuit of the lithium-ion storage battery pack. In order to improve the reliability of the power system, compared with the traditional MPPT control device, the solar battery array of the power system directly supplies power to the load through the isolation diode, and the MPPT control circuit is used as the charging circuit. Only two sets of main and backup circuits are required to ensure the control of the entire power system. Reliability, satellite power system MPPT control circuit less, low cost, less components, light weight, to achieve the maximum power tracking of tiny satellites.

附图说明Description of drawings

图1为本发明所述的卫星用电源系统MPPT控制装置的结构示意图。Fig. 1 is a schematic structural diagram of the satellite power system MPPT control device according to the present invention.

具体实施方式Detailed ways

具体实施方式一、结合图1说明本实施方式，本实施方式所述的一种卫星用电源系统MPPT控制装置，它包括太阳能电池阵列1、MPPT控制电路2、一号二极管31、二号二极管32和锂离子蓄电池组4；Specific Embodiments 1. This embodiment is described in conjunction with FIG. 1. A satellite power system MPPT control device described in this embodiment includes a solar cell array 1, an MPPT control circuit 2, a first diode 31, and a second diode 32. and lithium-ion battery pack 4;

太阳能电池阵列1的正向电源信号输出端连接一号二极管31的阳极，一号二极管31的阴极同时连接MPPT控制电路2功率追踪信号的输入端、二号二极管32的阴极和负载的正向电源信号输入端，MPPT控制电路2的电源信号输出端同时连接二号二极管32的阳极和锂离子蓄电池组4的正极，锂离子蓄电池组4的负极接地，太阳能电池阵列1的负向电源信号输出端同时连接负载的负向电源信号输入端和地。The forward power signal output end of the solar cell array 1 is connected to the anode of the first diode 31, and the cathode of the first diode 31 is simultaneously connected to the input end of the power tracking signal of the MPPT control circuit 2, the cathode of the second diode 32 and the forward power supply of the load The signal input terminal and the power signal output terminal of the MPPT control circuit 2 are simultaneously connected to the anode of the second diode 32 and the positive pole of the lithium-ion storage battery pack 4, the negative pole of the lithium-ion storage battery pack 4 is grounded, and the negative power supply signal output terminal of the solar cell array 1 Connect the load's negative power supply signal input and ground at the same time.

太阳能电池阵列1首先为负载供电，当太阳能电池阵列1为卫星的负载供电后还存在多余的电量时，同时为锂离子蓄电池组4供电；The solar cell array 1 first supplies power to the load, and when the solar cell array 1 supplies power to the load of the satellite, there is still excess power, and simultaneously supplies power to the lithium-ion battery pack 4;

锂离子蓄电池组4用于跟踪太阳能电池阵列1输出的最大功率；同时控制太阳能电池阵列1是否为锂离子蓄电池组4供电；The lithium-ion storage battery pack 4 is used to track the maximum power output by the solar cell array 1; simultaneously control whether the solar cell array 1 supplies power for the lithium-ion storage battery pack 4;

太阳能电池阵列1通过一号二极管31为负载供电；The solar cell array 1 supplies power to the load through the first diode 31;

锂离子蓄电池组4通过二号二极管32为负载供电；The lithium-ion battery pack 4 supplies power to the load through the second diode 32;

所述一号二极管31和二号二极管32均为隔离二极管。Both the first diode 31 and the second diode 32 are isolation diodes.

本实施方式所述的卫星用电源系统MPPT控制装置，实现了微小卫星最大功率追踪，提高电源系统太阳电池阵的能量利用率，对提高卫星性能和效益都有非常重要的意义。太阳电池阵直接给负载供电，有效减少太阳电池阵损耗，提高太阳电池阵能量利用率。The satellite power system MPPT control device described in this embodiment realizes the maximum power tracking of micro-satellites and improves the energy utilization rate of the solar cell array of the power system, which is very important for improving satellite performance and efficiency. The solar cell array directly supplies power to the load, effectively reducing the loss of the solar cell array and improving the energy utilization rate of the solar cell array.

具体实施方式二、本实施方式是对具体实施方式一所述的一种卫星用电源系统MPPT控制装置的进一步说明，MPPT控制电路2采用不调节母线方式工作。Embodiment 2. This embodiment is a further description of the MPPT control device for a satellite power supply system described in Embodiment 1. The MPPT control circuit 2 works in an unregulated bus way.

本实施方式，太阳电池阵通过第一二极管与卫星负载直接连接，锂离子蓄电池组通过第二二极管与卫星负载直接连接，当太阳电池阵列提供的能源不满足负载要求时，由锂离子蓄电池组为负载供电；In this embodiment, the solar battery array is directly connected to the satellite load through the first diode, and the lithium-ion battery pack is directly connected to the satellite load through the second diode. When the energy provided by the solar battery array does not meet the load requirements, the lithium-ion The ion battery pack supplies power to the load;

具体实施方式三、本实施方式是对具体实施方式一或二所述的一种卫星用电源系统MPPT控制装置的进一步说明，MPPT控制电路2为超级降压拓扑电路。Embodiment 3. This embodiment is a further description of the MPPT control device for a satellite power supply system described in Embodiment 1 or 2. The MPPT control circuit 2 is a super step-down topology circuit.

具体实施方式四、基于具体实施方式一所述的一种卫星用电源系统MPPT控制装置的卫星用电源系统控制方法，该方法为：Embodiment 4. Based on the satellite power system control method of a satellite power system MPPT control device described in Embodiment 1, the method is:

采用MPPT控制电路2追踪太阳能电池阵列1输出的最大功率，获得太阳能电池阵列1的最大电压和最大电流值；Using the MPPT control circuit 2 to track the maximum output power of the solar cell array 1, to obtain the maximum voltage and maximum current value of the solar cell array 1;

当太阳能电池阵列1的最大电压值大于充电阈值电压时，太阳能电池阵列1输出的电流经MPPT控制电路2为锂离子蓄电池组4供电；When the maximum voltage value of the solar cell array 1 was greater than the charging threshold voltage, the current output by the solar cell array 1 was powered by the MPPT control circuit 2 for the lithium-ion battery pack 4;

当太阳能电池阵列1的最大电压值等于充电阈值电压时，太阳能电池阵列1只为负载供电；When the maximum voltage value of the solar battery array 1 is equal to the charging threshold voltage, the solar battery array 1 only supplies power to the load;

当太阳能电池阵列1的最大电压值小于充电阈值电压时，锂离子蓄电池组4输出电流与太阳能电池阵列1同时为负载供电。When the maximum voltage value of the solar battery array 1 is less than the charging threshold voltage, the output current of the lithium-ion battery pack 4 and the solar battery array 1 supply power to the load at the same time.

本发明的MPPT控制电路作为锂离子蓄电池组充电电路，当太阳电池阵有多余能量时，追踪母线最高电压电流值，为锂离子蓄电池组充电。实现了微小卫星最大功率追踪，提高太阳电池阵的能量利用率。上述内容仅为本发明的较佳实施例，不能以此限定本发明实施的范围，故举凡数值的变更或等效组件的置换，或依本发明申请专利范围所作的均等变化与修饰，都应仍属本发明涵盖的范畴。The MPPT control circuit of the present invention is used as a charging circuit for the lithium-ion storage battery pack, and when the solar battery array has excess energy, it tracks the highest voltage and current value of the busbar to charge the lithium-ion storage battery pack. It realizes the maximum power tracking of micro-satellites and improves the energy utilization rate of the solar cell array. The above content is only a preferred embodiment of the present invention, and cannot limit the scope of the present invention. Therefore, all numerical changes or replacement of equivalent components, or equivalent changes and modifications made according to the scope of the patent application of the present invention, should be Still belong to the scope that the present invention covers.

Claims (4)

1. a satellite power-supply system MPPT control device, it is characterized in that, it comprises solar battery array (1), MPPT control circuit (2), diode (31), No. two diodes (32) and a lithium-ions battery group (4);
The forward power supply signal output of solar battery array (1) connects the anode of a diode (31), the negative electrode of a diode (31) connects the input of MPPT control circuit (2) powerinjected method signal simultaneously, the negative electrode of No. two diodes (32) and the forward power supply signal input of load, the power supply signal output of MPPT control circuit (2) connects the anode of No. two diodes (32) and the positive pole of lithium-ions battery group (4) simultaneously, the minus earth of lithium-ions battery group (4), the negative sense power supply signal output of solar battery array (1) connects negative sense power supply signal input and the ground of load simultaneously,
Solar battery array (1) is first load supplying, when also there is unnecessary electricity after the load supplying that solar battery array (1) is satellite, is also lithium-ions battery group (4) power supply;
The maximum power that MPPT control circuit (2) exports for following the trail of solar battery array (1); It is lithium-ions battery group (4) power supply simultaneously;
Solar battery array (1) is load supplying by a diode (31);
Lithium-ions battery group (4) is load supplying by No. two diodes (32);
A described diode (31) and No. two diodes (32) are isolating diode.
2. a kind of satellite power-supply system MPPT control device according to claim 1, is characterized in that, MPPT control circuit (2) adopts and do not regulate bus mode to work.
3. a kind of satellite power-supply system MPPT control device according to claim 1 and 2, is characterized in that, MPPT control circuit (2) is super buck topology circuit.
4., based on a kind of described in claim 1 satellite electric power system control method of satellite power-supply system MPPT control device, it is characterized in that, the method is:
Adopt the maximum power that MPPT control circuit (2) tracking solar battery array (1) exports, obtain maximum voltage and the lowest high-current value of solar battery array (1);
When the maximum voltage value of solar battery array (1) is greater than charge threshold voltage, the electric current that solar battery array (1) exports is lithium-ions battery group (4) power supply through MPPT control circuit (2);
When the maximum voltage value of solar battery array (1) equals charge threshold voltage, solar battery array (1) is only load supplying;
When the maximum voltage value of solar battery array (1) is less than charge threshold voltage, lithium-ions battery group (4) output current and solar battery array (1) are load supplying simultaneously.
CN201510316576.3A 2015-06-10 2015-06-10 Device and method for power system MPPT control for satellite Pending CN104868578A (en)

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CN107026598A (en) * 2015-09-25 2017-08-08 泰勒斯公司 Flexible solar power generation machine includes the spacecraft and satellite of the solar generator
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CN105429268B (en) * 2015-12-01 2018-10-23 上海宇航系统工程研究所 A kind of micro-nano satellite power-supply system based on redundancy MPPT circuit structures
CN105429182A (en) * 2015-12-30 2016-03-23 哈尔滨工业大学 Power source MPPT control system for satellite
CN105762786A (en) * 2016-04-21 2016-07-13 上海微小卫星工程中心 Power supply system for short-period spacecraft
CN106793647A (en) * 2016-11-09 2017-05-31 上海卫星工程研究所 High current transmission cable layout method on a kind of satellite

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