CN111064194A - High-reliability mobile variable-frequency power generation hybrid energy system - Google Patents
High-reliability mobile variable-frequency power generation hybrid energy system Download PDFInfo
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- CN111064194A CN111064194A CN202010017898.9A CN202010017898A CN111064194A CN 111064194 A CN111064194 A CN 111064194A CN 202010017898 A CN202010017898 A CN 202010017898A CN 111064194 A CN111064194 A CN 111064194A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
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Abstract
The invention discloses a high-reliability mobile variable-frequency power generation hybrid energy system which comprises a commercial power supply, a vehicle-mounted variable-frequency medium-frequency diesel generator, a vehicle power take-off variable-frequency medium-frequency generator, an ATS (automatic transfer switching) switch, a broadband APFC (active power converter), an AC/DC (alternating current/direct current) power conversion module, a solar module, a battery pack and an intelligent hybrid energy controller. The invention changes the framework that the traditional mobile equipment power supply system has power frequency alternating current and direct current loads at the same time, reduces the link of power supply conversion, improves the reliability of the system and leads the whole power generation system to be more concise and reliable.
Description
Technical Field
The invention relates to the technical field of power supply, in particular to a high-reliability mobile variable-frequency power generation hybrid energy system.
Background
Various military electronic facilities can not be separated from power supply, and particularly mobile military equipment such as communication command vehicles, radars, missiles, electronic countermeasures and the like for field operation are generally provided with a diesel generator set for power supply. In recent years, with the technological progress, the variable frequency diesel power generation technology adopting the medium frequency permanent magnet generator is widely applied to the military industry field. Compared with the traditional power frequency diesel generator set, the variable frequency diesel generator set can improve the efficiency, reduce the oil consumption and the weight and the volume, and is favorable for improving the flexible maneuverability of combat. However, due to the inherent defects of the power supply framework of the traditional military electronic equipment, the frequency conversion diesel generator set used by the existing equipment is subjected to power supply conversion (AC/DC/AC) twice, the intermediate frequency power supply output of the intermediate frequency generator is firstly converted into direct current, and then the direct current is inverted into standard power frequency alternating current to be output to the equipment for power supply. In the whole power supply system, two times of power supply conversion are added, so that the volume of equipment is increased, and meanwhile, the reliability is reduced. A conventional mobile military equipment power supply system is shown in fig. 1.
Disclosure of Invention
Aiming at the problems, the invention provides a high-reliability mobile variable-frequency power generation hybrid energy system, which can enable the whole power supply system to be simpler and more reliable and improve the stability of a power supply system.
The invention adopts the following technical scheme:
the utility model provides a high-reliable removal frequency conversion power generation hybrid energy system, includes power supply unit, ATS switch, wide band APFC, AC/DC power conversion module, solar module, group battery and intelligent hybrid energy controller, power supply unit includes commercial power, on-vehicle frequency conversion intermediate frequency diesel generator, car power takeoff frequency conversion intermediate frequency generator, commercial power, on-vehicle frequency conversion intermediate frequency diesel generator, car power takeoff frequency conversion intermediate frequency generator all link to each other with wide band APFC through the ATS switch, and the output of wide band APFC is connected with AC/DC power conversion module, AC/DC power conversion module output is equipped with direct current bus, be connected with solar module, group battery and load on the direct current bus, intelligent hybrid energy controller respectively with on-vehicle frequency conversion intermediate frequency diesel generator, car power takeoff frequency conversion intermediate frequency generator, ATS switch, solar module, The battery pack is connected.
Preferably, the power factor correction range of the broadband APFC is 50hz-400 hz.
Preferably, the output voltage of the AC/DC power conversion module is direct current 48v or 28 v.
Preferably, the vehicle-mounted variable-frequency medium-frequency diesel generator and the automobile power taking variable-frequency medium-frequency generator are both free of a medium-frequency rectification module and an inverter.
Preferably, the vehicle-mounted variable-frequency intermediate-frequency diesel generator and the automobile power taking variable-frequency intermediate-frequency generator both comprise a load monitoring and rotating speed controller.
In particular, the control method of the high-reliability mobile variable-frequency power generation hybrid energy system comprises the following steps:
s1, the intelligent hybrid energy controller detects whether the sunlight of the solar module is sufficient, if so, the power supply of the commercial power, the vehicle-mounted variable-frequency medium-frequency diesel generator and the automobile power takeoff variable-frequency medium-frequency generator is cut off, and the battery pack is charged; when the solar module cannot provide enough power for the load, detecting the capacity of the battery pack, if the capacity of the battery pack is higher than a preset threshold value, supplying power by the battery pack, if the capacity of the battery pack is lower than the preset threshold value, detecting whether commercial power exists, and entering step S2;
s2, when the intelligent hybrid energy controller detects that the solar module cannot provide enough energy for the load, the ATS switch is switched to a mains supply input mode, the mains supply supplies power to the load through the broadband APFC and the AC/DC power supply conversion module, and meanwhile, the battery pack is charged;
s3, when the intelligent hybrid energy controller detects that the solar module cannot provide sufficient energy for the load and detects that no commercial power exists, the vehicle-mounted variable-frequency medium-frequency diesel generator is started to provide power and simultaneously the battery pack is charged;
s4, when the intelligent hybrid energy controller detects that solar energy can not provide sufficient energy for a load, and detects that no commercial power exists, a vehicle-mounted variable-frequency medium-frequency diesel generator starting signal is sent out, when the vehicle-mounted variable-frequency medium-frequency generator is detected to be failed to start for three times, the intelligent hybrid energy controller sends out a starting signal for the vehicle power take-off variable-frequency medium-frequency generator, the vehicle power take-off variable-frequency medium-frequency generator provides power, and meanwhile, a battery pack is charged.
Preferably, in step S1, the threshold is 50% to 70% of the battery pack capacity.
The invention has the beneficial effects that:
the invention changes the framework that the traditional mobile equipment power supply system has power frequency alternating current and direct current loads at the same time, reduces the link of power supply conversion and improves the reliability of the system; meanwhile, the working mode that the traditional variable-frequency diesel generator set needs to output power frequency 50hz alternating current through twice power supply conversion is changed, so that the whole power generation system is simpler and more reliable.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, and it is apparent that the drawings in the following description only relate to some embodiments of the present invention and are not limiting on the present invention.
FIG. 1 is a schematic diagram of a conventional mobile military equipment power supply system;
FIG. 2 is a schematic structural view of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the word "comprising" or "comprises", and the like, in this disclosure is intended to mean that the elements or items listed before that word, include the elements or items listed after that word, and their equivalents, without excluding other elements or items. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
The invention is further illustrated with reference to the following figures and examples.
As shown in fig. 2, a high-reliability mobile variable-frequency power generation hybrid energy system comprises a power supply unit, an ATS switch, a broadband APFC, an AC/DC power conversion module, a solar module, a battery pack and an intelligent hybrid energy controller, wherein the power supply unit comprises a commercial power, a vehicle-mounted variable-frequency medium-frequency diesel generator and a vehicle power take-off variable-frequency medium-frequency generator, the commercial power, the vehicle-mounted variable-frequency medium-frequency diesel generator and the vehicle power take-off variable-frequency medium-frequency generator are all connected with the broadband APFC through the ATS switch, the output end of the broadband APFC is connected with the AC/DC power conversion module, the output end of the AC/DC power conversion module is provided with a DC bus, the DC bus is connected with the solar module, the battery pack and a load, and the intelligent hybrid energy controller is respectively connected with the vehicle-mounted variable-, The solar module is connected with the battery pack, collects the voltage, current and other information of the solar module, and applies a control signal.
The vehicle-mounted variable-frequency medium-frequency diesel generator and the automobile power taking variable-frequency medium-frequency generator are not provided with a module and an inverter which are subjected to medium-frequency rectification of secondary power supply conversion (AC/DC/AC) to form direct current, medium-frequency alternating current (150hz-400hz) is directly output to a direct current battery pack at the rear end, and the battery pack directly supplies power to vehicle-mounted equipment. The vehicle-mounted variable-frequency medium-frequency diesel generator and the automobile power taking variable-frequency medium-frequency generator can automatically adjust the rotating speed of the engine according to the change of load power, so that the output frequency and power of the generator are changed, and the engine always works in the most energy-saving state.
The power of the automobile engine reaches the variable-frequency medium-frequency generator arranged on an automobile chassis through the power takeoff and a hydraulic power transmission device to drive the variable-frequency medium-frequency generator to output medium-frequency alternating current power. Compared with the traditional vehicle-mounted variable frequency diesel generator, the vehicle power take-off variable frequency intermediate frequency generator has the greatest advantage that the vehicle engine can be started successfully more easily than a common diesel engine in military extreme low-temperature environments and plateau environments, and the defect that the vehicle-mounted diesel generator is poor in starting performance under extreme low-temperature working conditions and plateau working conditions is thoroughly overcome, so that the reliability of battlefield power supply is greatly improved.
The rotating speeds of the engines of the vehicle-mounted variable-frequency intermediate-frequency diesel generator and the automobile power taking variable-frequency intermediate-frequency generator can be judged by one load detection device, so that the rotating speed of the engine can be controlled. When the load is larger, the rotating speed of the engine is controlled to be larger, so that the rotating speed of the variable-frequency intermediate-frequency generator is also larger, and larger power supply power can be output. On the contrary, the rotating speed of the engine is controlled to be reduced, so that the rotating speed of the variable-frequency intermediate-frequency generator is also reduced, and the lower power supply power is output. By the mode of controlling the rotating speed of the engine according to the load, the fuel consumption of the engine is always in a relatively optimized state when the engine works under the working condition matched with the load. Under the working condition, the output of the intermediate frequency generator is an intermediate frequency alternating current power supply of 150hz to 400 hz.
The vehicle-mounted variable-frequency medium-frequency diesel generator, the automobile power taking variable-frequency medium-frequency generator and the commercial power supply provide a medium-frequency alternating current (150hz-400hz) or power-frequency alternating current (50hz) primary power supply for a loaded direct-current power supply module after passing through an automatic switching ATS switch. Because the AC/DC power supply module at the rear end has broadband (50hz-400hz) APFC power factor correction, the power factor of the whole power supply system is over 0.95 no matter whether the primary power supply of all types is 50hz power frequency alternating current or 150hz-400hz intermediate frequency alternating current, so that the efficiency of the power supply system is ensured and the electromagnetic compatibility requirement is met. The output voltage of the AC/DC power supply conversion module is direct current 48v or 28v, 5, and can be low-voltage direct current of other standards.
The control method comprises the following steps:
s1, the intelligent hybrid energy controller detects whether the sunlight of the solar module is sufficient (known by control software of the solar module), if so, the power supply of the commercial power, the vehicle-mounted variable-frequency medium-frequency diesel generator and the automobile power-taking variable-frequency medium-frequency generator is cut off, and meanwhile, the electric power which cannot be completely absorbed by the load is charged into the battery pack; when the solar module cannot provide enough power for the load, detecting the capacity of the battery pack, if the capacity of the battery pack is higher than a preset threshold (according to batteries with different properties, 50% -70% of electric quantity can be selected as the preset threshold), supplying power by the battery pack, if the capacity of the battery pack is lower than the preset threshold, detecting whether commercial power exists, and entering step S2;
s2, when the intelligent hybrid energy controller detects that the solar module cannot provide enough energy for the load, the ATS switch is switched to a mains supply input mode, the mains supply supplies power to the load through the broadband APFC and the AC/DC power supply conversion module, and meanwhile, the battery pack is charged; because the battery pack is connected with the direct current bus in parallel, the power supply of the whole system is not interrupted.
S3, when the intelligent hybrid energy controller detects that the solar module cannot provide sufficient energy for the load and detects that no commercial power exists, the intelligent hybrid energy controller sends a starting signal to the vehicle-mounted variable-frequency intermediate-frequency diesel generator set, starts the vehicle-mounted variable-frequency intermediate-frequency diesel generator set to provide power, and charges the battery pack;
s4, when the intelligent hybrid energy controller detects that solar energy can not provide sufficient energy for a load, and detects that no commercial power exists, a vehicle-mounted variable-frequency medium-frequency diesel generator starting signal is sent out, when the vehicle-mounted variable-frequency medium-frequency generator is detected to be failed to start for three times, the intelligent hybrid energy controller sends out a starting signal for the vehicle power take-off variable-frequency medium-frequency generator, the vehicle power take-off variable-frequency medium-frequency generator provides power, and meanwhile, a battery pack is charged.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The utility model provides a high-reliable removal frequency conversion power generation hybrid energy system, its characterized in that, includes power supply unit, ATS switch, wide band APFC, AC/DC power conversion module, solar module, group battery and intelligent hybrid energy controller, power supply unit includes commercial power, on-vehicle frequency conversion intermediate frequency diesel generator, car power takeoff frequency conversion intermediate frequency generator, commercial power, on-vehicle frequency conversion intermediate frequency diesel generator, car power takeoff frequency conversion intermediate frequency generator all link to each other with wide band APFC through the ATS switch, and the output of wide band APFC is connected with AC/DC power conversion module, AC/DC power conversion module output is equipped with the direct current generating line, be connected with solar module, group battery and load on the direct current generating line, intelligent hybrid energy controller respectively with on-vehicle frequency conversion intermediate frequency diesel generator, car power takeoff frequency conversion intermediate frequency generator, ATS switch, The solar module is connected with the battery pack.
2. The system according to claim 1, wherein the power factor correction range of the broadband APFC is 50hz to 400 hz.
3. The high-reliability mobile variable-frequency power generation hybrid energy system according to claim 1, wherein the output voltage of the AC/DC power conversion module is direct current 48v or 28 v.
4. The high-reliability mobile variable-frequency power generation hybrid energy system according to claim 1, wherein the vehicle-mounted variable-frequency medium-frequency diesel generator and the automobile power-taking variable-frequency medium-frequency generator are both free of medium-frequency rectification modules and inverters.
5. The high-reliability mobile variable-frequency power generation hybrid energy system according to claim 1, wherein the vehicle-mounted variable-frequency medium-frequency diesel generator and the automobile power take-off variable-frequency medium-frequency generator comprise load monitoring and rotation speed controllers.
6. The control method of the high-reliability mobile variable-frequency power generation hybrid energy system according to claim 1, comprising the following steps:
s1, the intelligent hybrid energy controller detects whether the sunlight of the solar module is sufficient, if so, the power supply of the commercial power, the vehicle-mounted variable-frequency medium-frequency diesel generator and the automobile power takeoff variable-frequency medium-frequency generator is cut off, and the battery pack is charged; when the solar module cannot provide enough power for the load, detecting the capacity of the battery pack, if the capacity of the battery pack is higher than a preset threshold value, supplying power by the battery pack, if the capacity of the battery pack is lower than the preset threshold value, detecting whether commercial power exists, and entering step S2;
s2, when the intelligent hybrid energy controller detects that the solar module cannot provide enough energy for the load, the ATS switch is switched to a mains supply input mode, the mains supply supplies power to the load through the broadband APFC and the AC/DC power supply conversion module, and meanwhile, the battery pack is charged;
s3, when the intelligent hybrid energy controller detects that the solar module cannot provide sufficient energy for the load and detects that no commercial power exists, the vehicle-mounted variable-frequency medium-frequency diesel generator is started to provide power and simultaneously the battery pack is charged;
s4, when the intelligent hybrid energy controller detects that solar energy can not provide sufficient energy for a load, and detects that no commercial power exists, a vehicle-mounted variable-frequency medium-frequency diesel generator starting signal is sent out, when the vehicle-mounted variable-frequency medium-frequency generator is detected to be failed to start for three times, the intelligent hybrid energy controller sends out a starting signal for the vehicle power take-off variable-frequency medium-frequency generator, the vehicle power take-off variable-frequency medium-frequency generator provides power, and meanwhile, a battery pack is charged.
7. The method for controlling the high-reliability mobile variable-frequency power generation hybrid energy system according to claim 6, wherein in step S1, the threshold is 50% -70% of the battery pack capacity.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112952981A (en) * | 2021-02-07 | 2021-06-11 | 重庆润电科技有限公司 | Oil-electricity hybrid mobile power supply system and working method thereof |
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| CN203707864U (en) * | 2013-12-07 | 2014-07-09 | 成都乾威科技有限公司 | Novel hybrid-energy 48V direct-current frequency-conversion power generation system |
| CN204243874U (en) * | 2014-07-29 | 2015-04-01 | 九州方圆实业控股(集团)有限公司 | A kind of data center high-voltage direct current (DC) power system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203707864U (en) * | 2013-12-07 | 2014-07-09 | 成都乾威科技有限公司 | Novel hybrid-energy 48V direct-current frequency-conversion power generation system |
| CN204243874U (en) * | 2014-07-29 | 2015-04-01 | 九州方圆实业控股(集团)有限公司 | A kind of data center high-voltage direct current (DC) power system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112952981A (en) * | 2021-02-07 | 2021-06-11 | 重庆润电科技有限公司 | Oil-electricity hybrid mobile power supply system and working method thereof |
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Application publication date: 20200424 |
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