CN101841169A - Energy management system for wind power generation - Google Patents

Energy management system for wind power generation Download PDF

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Publication number
CN101841169A
CN101841169A CN201010113439A CN201010113439A CN101841169A CN 101841169 A CN101841169 A CN 101841169A CN 201010113439 A CN201010113439 A CN 201010113439A CN 201010113439 A CN201010113439 A CN 201010113439A CN 101841169 A CN101841169 A CN 101841169A
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CN
China
Prior art keywords
circuit
energy
load
bus
storage battery
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Pending
Application number
CN201010113439A
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Chinese (zh)
Inventor
郭振清
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Tenfo Electrical Group Co., Ltd.
Original Assignee
GUANGDONG TENFO FENGGUANGCHAO POWER EQUIPMENT CO Ltd
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Application filed by GUANGDONG TENFO FENGGUANGCHAO POWER EQUIPMENT CO Ltd filed Critical GUANGDONG TENFO FENGGUANGCHAO POWER EQUIPMENT CO Ltd
Priority to CN201010113439A priority Critical patent/CN101841169A/en
Publication of CN101841169A publication Critical patent/CN101841169A/en
Pending legal-status Critical Current

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/76Power conversion electric or electronic aspects

Abstract

The invention relates to an energy management system for wind power generation. The energy management system comprises a permanent magnet synchronous generator, an uncontrollable rectifying circuit, a BOOST circuit, a DC-BUS and a storage battery which are connected with a wind machine in turn, wherein the DC-BUS is connected with a DC load circuit, an inverter circuit and a charging circuit of the storage battery respectively and provided with a detection and control circuit structure for controlling the DC load circuit, the inverter circuit and the charging circuit of the storage battery. In the system, electric energy generated by wind power generation is conveyed to the DC-BUS; when energy on the DC-BUS is sufficient and according to the requirement of energy control, energy is provided for a DC load, the storage battery is charged and energy is provided for a power grid and an AC load through the inverter circuit according to a certain priority; and when the energy on the DC-BUS is insufficient, the storage battery can provide the energy for the DC-BUS through a discharging circuit so as to ensure the reliable operation of the system.

Description

A kind of EMS that is used for wind power generation
Technical field
The present invention relates to wind power plant, especially a kind of EMS that is used for wind power generation.
Background technology
Wind-driven generator can utilize the wind-resources of nature to generate electricity, cardinal principle is the blade rotation that drives wind energy conversion system by wind-force, rotation is delivered to magneto produces electric energy, production and popularization with the small-size wind power-generating field had very great development at the family of China in recent years, it can solve the daily need for electricity of domestic consumer, and environmental protection is the very big generation mode of a kind of dynamogenetic value.At present, domestic small-sized wind power generator all is single for the processing of electric energy that magneto alternator is exported, reach the work wind speed range of wind-driven generator when wind speed, then the energy that sends of magneto alternator can be utilized by system, but does not have good measure for the distribution of energy; And mostly the energy shortage that sends when wind-driven generator is will make like this that by coming protection system in the mode of cutting off load energy distribution is unreasonable during with the electricity consumption of offered load, the stable operation of the protection load that system can not united and coordinating; For the generating efficiency of family with small-sized wind power generator is provided, widen its application surface, need make unified planning and control to the energy Flow mode in the miniature wind power generation system.
Summary of the invention
The object of the present invention is to provide a kind of EMS that is used for wind power generation that can the reasonable distribution energy.
The technical scheme that the present invention is adopted for its technical problem of solution is:
A kind of EMS that is used for wind power generation comprises the magneto alternator that is connected with wind energy conversion system, and:
The uncontrollable rectification circuit that connects magneto alternator;
The BOOST circuit that connects uncontrollable rectification circuit, wherein magneto alternator is connected to the BOOST circuit by frequency detection circuit, MPPT controller, dc drive circuit successively, and uncontrollable rectification circuit then is connected to the MPPT controller by dc detection circuit;
Connect the DC-BUS of BOOST circuit, DC-BUS is connected with DC load circuit, inverter circuit and battery charging circuit respectively;
Wherein, the output of DC load circuit is connected to DC load;
The output of inverter circuit is connected to AC load respectively, and is connected with testing circuit, inverter control circuit and drive circuit formation feedback;
The AC load input connects electrical network;
The output of battery charging circuit is connected to storage battery, the storage battery side is connected to DC-BUS by the battery discharging circuit, battery charging circuit wherein and battery discharging circuit are connected to the charge and discharge control circuit by the charge and discharge testing circuit jointly, and the charge and discharge control circuit then connects with battery charging circuit and battery discharging circuit respectively by the charge and discharge drive circuit.
The invention has the beneficial effects as follows: the present invention arrives DC-BUS with the power delivery that wind power generation produces, requirement according to energy control, when the energy on the DC-BUS is sufficient, will be according to certain priority, for DC load provides energy, storage battery is implemented charging, provide energy for electrical network and AC load by inverter circuit; When the energy shortage on the DC-BUS, storage battery will provide energy for DC-BUS by discharge circuit, thus the reliability service of the system of assurance; The present invention is according to the operating state of magneto alternator, storage battery, electrical network, and straight/AC load is coordinated, control system is operated in appropriate pattern, make system's security of operation, reasonable energy utilization, miniature wind power generation system can be moved with the highest efficient under different weather conditions, and guarantee that its load can steady in a long-term move.
Description of drawings
Be described further below in conjunction with the drawings and specific embodiments:
Fig. 1 is a system block diagram of the present invention;
Fig. 2 is the schematic diagram of first kind of mode of operation of the present invention;
Fig. 3 is the schematic diagram of second kind of mode of operation of the present invention;
Fig. 4 is the schematic diagram of the third mode of operation of the present invention.
Embodiment
As shown in Figure 1, a kind of EMS that is used for wind power generation of the present invention comprises the magneto alternator that is connected with wind energy conversion system, and:
The uncontrollable rectification circuit that connects magneto alternator;
BOOST (boosting inverter) circuit that connects uncontrollable rectification circuit, wherein magneto alternator is connected to the BOOST circuit by frequency detection circuit, MPPT (MPPT maximum power point tracking) controller of exporting control that detects output frequency, the dc drive circuit that drives output successively, uncontrollable rectification circuit then is connected to the MPPT controller by dc detection circuit, forms the control structure to uncontrollable rectification circuit output electric energy;
Connect the DC-BUS of BOOST circuit, DC-BUS is connected with DC load circuit, inverter circuit and battery charging circuit respectively;
Wherein, the output of DC load circuit is connected to DC load, forms the structure of DC load power supply;
The output of inverter circuit is connected to AC load, and and the testing circuit of joint detection inverter circuit output, inverter control circuit that inverter circuit is controlled, and the drive circuit that drives inverter circuit work forms the feedback syndeton;
The output of battery charging circuit is connected to storage battery, the storage battery side is connected to DC-BUS (dc bus) by the battery discharging circuit, battery charging circuit wherein and battery discharging circuit are connected to the charge and discharge control circuit by the charge and discharge testing circuit jointly, the charge and discharge control circuit then connects with battery charging circuit and battery discharging circuit respectively by the charge and discharge drive circuit, forms the charge and discharge control structure of storage battery;
Be provided with the electrical network that connects AC load in addition, for AC load provides electric energy.
In miniature wind power generation system, magneto alternator is converted into the AC energy that frequency changes with wind speed with mechanical energy, the uncontrollable rectification circuit of three-phase is converted into direct current with the unsettled alternating current of frequency, and be transported to the low-pressure end of BOOST circuit, the BOOST circuit is converted into stable high voltage electric energy with low pressure and unsettled direct current energy, and be transported to DC-BUS, requirement according to energy control, when the energy on the DC-BUS is sufficient, will be according to certain priority, for DC load provides energy, storage battery is implemented charging, provide energy by inverter circuit for electrical network and AC load.When the energy shortage on the DC-BUS, storage battery will provide energy for DC-BUS by discharge circuit, thus the reliability service of the system of assurance; The energy management control algolithm is the operating state according to magneto alternator, storage battery, electrical network, the BOOST translation circuit of the uncontrollable rectification circuit of control three-phase rear end, BUCK charging circuit between storage battery and the DC-BUS, BOOST discharge circuit, switching circuit between electrical network and the AC-BUS is operated in appropriate pattern, thereby make magneto alternator, storage battery, three energy source co-ordinations of electrical network, guarantee the safe and stable operation of system and the reasonable utilization of energy.
System of the present invention is the operating state according to magneto alternator, storage battery, electrical network, and the switching circuit of controlling between BOOST translation circuit, DC-BUS electrical network and the AC load that uncontrollable rectification circuit connects is operated in appropriate pattern.Thereby make magneto alternator, storage battery, three energy source co-ordinations of electrical network, guarantee the safe and stable operation of system and the reasonable utilization of energy.
When the present invention uses in reality, the wind energy conversion system capturing wind energy, and convert it into mechanical energy, magneto alternator is converted into the AC energy that frequency changes with wind speed with mechanical energy, and the unsettled alternating current of frequency is converted into direct current by the uncontrollable rectification circuit of three-phase, and being transported to the low-pressure end of BOOST circuit, the BOOST circuit is converted into stable high voltage electric energy with low pressure and unsettled direct current energy, and is transported to DC-BUS; According to the requirement of energy control, when the energy on the DC-BUS is sufficient, will for DC load provides energy, implement charging according to certain priority to storage battery, provide energy by inverter circuit for electrical network and AC load; And when the energy shortage on the DC-BUS, storage battery will provide electric energy for DC-BUS by discharge circuit, thus the reliability service of the system of assurance.
The operate as normal rotating speed of supposing wind energy conversion system is 20rpm~300rpm, and the rated voltage of the output of uncontrollable rectification circuit is 50VDC~300VDC, enumerates mode of operation of the present invention below respectively:
Pattern 1:
The wind energy conversion system rotating speed reaches 20rpm~300rpm stage, makes that the rated voltage of output of uncontrollable rectification circuit is 50VDC~300VDC, and output to DC-BUS by the BOOST circuit this moment, supplies with storage battery, DC load and AC load electric energy respectively.
Pattern 2:
When blower fan fails to reach the rotating speed of 20rpm~300rpm, when the output voltage of the uncontrollable rectification circuit of three-phase failed to reach 50VDC~300VDC, system judged that output does not meet the requirement of inverter circuit, and its energy can be let out by the drain charge device and remove; This moment, charge-discharge control circuit was controlled storage battery, for DC-BUS provides DC load institute energy requirement, thereby can use for DC load or AC load, and electrical network also provided energy for AC load jointly.
Mode 3:
Fail to reach the rotating speed of 20rpm~300rpm when blower fan, the output voltage of uncontrollable rectification circuit fails to reach 50VDC~300VDC, do not meet the requirement of inverter circuit, its energy is let out by the drain charge device and is removed, meanwhile, electrical network is in maintenance or power down mode, and at this moment, storage battery can provide energy for direct current, AC load by DC-BUS; And be lower than preset value when the voltage of storage battery, and for example during 44V, storage battery enters guard mode, and load will quit work, and system changes shutdown mode over to.
Enumerated several frequently seen mode of operation above respectively, as seen the present invention is according to the operating state of magneto alternator, storage battery, electrical network, and straight/AC load is coordinated, control system is operated in appropriate pattern, make system's security of operation, reasonable energy utilization makes the miniature wind power generation system can be under different weather conditions, can move with the highest efficient, and guarantee that its load can steady in a long-term move.

Claims (1)

1. an EMS that is used for wind power generation comprises the magneto alternator that is connected with wind energy conversion system, it is characterized in that also including:
The uncontrollable rectification circuit that connects magneto alternator;
The BOOST circuit that connects uncontrollable rectification circuit, wherein magneto alternator is connected to the BOOST circuit by frequency detection circuit, MPPT controller, dc drive circuit successively, and uncontrollable rectification circuit then is connected to the MPPT controller by dc detection circuit;
Connect the DC-BUS of BOOST circuit, DC-BUS is connected with DC load circuit, inverter circuit and storage battery charge and discharge circuit respectively;
Wherein, the output of DC load circuit is connected to DC load;
The output of inverter circuit is connected to AC load respectively, and connection detection circuit, inverter control circuit and drive circuit successively, forms feedback and connects;
The AC load input connects electrical network;
The output of battery charging circuit is connected to storage battery, storage battery is connected to DC-BUS by the battery discharging circuit, battery charging circuit wherein and battery discharging circuit are connected to the charge and discharge control circuit by the charge and discharge testing circuit jointly, and the charge and discharge control circuit then connects with battery charging circuit and battery discharging circuit respectively by the charge and discharge drive circuit.
CN201010113439A 2010-01-26 2010-01-26 Energy management system for wind power generation Pending CN101841169A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201010113439A CN101841169A (en) 2010-01-26 2010-01-26 Energy management system for wind power generation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201010113439A CN101841169A (en) 2010-01-26 2010-01-26 Energy management system for wind power generation

Publications (1)

Publication Number Publication Date
CN101841169A true CN101841169A (en) 2010-09-22

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CN201010113439A Pending CN101841169A (en) 2010-01-26 2010-01-26 Energy management system for wind power generation

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102832636A (en) * 2011-06-15 2012-12-19 施耐德电器工业公司 Security control mechanism for distributed photovoltaic system
CN104348389A (en) * 2013-08-07 2015-02-11 广州市香港科大霍英东研究院 Wind power generation controller
CN104852455A (en) * 2015-05-20 2015-08-19 徐伯琴 Blower impeller of sewage treatment equipment power system
CN105244913A (en) * 2015-11-02 2016-01-13 国网天津市电力公司 Small grid-connected wind power generation system and control method thereof
CN105680470A (en) * 2015-11-02 2016-06-15 国网天津市电力公司 Wind power generation system and energy management control method capable of adapting tosmall-sized wind field characteristics
CN106208071A (en) * 2015-05-29 2016-12-07 通用电气公司 Hybrid AC and DC distribution system and using method
CN114157125A (en) * 2021-12-06 2022-03-08 深圳市迪浦电子有限公司 Power converter and system

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102832636A (en) * 2011-06-15 2012-12-19 施耐德电器工业公司 Security control mechanism for distributed photovoltaic system
EP2535996A3 (en) * 2011-06-15 2014-09-03 Schneider Electric Industries SAS Secure control mechanism for distributed photovoltaic system
CN102832636B (en) * 2011-06-15 2015-04-08 施耐德电器工业公司 Security control mechanism for distributed photovoltaic system
CN104348389A (en) * 2013-08-07 2015-02-11 广州市香港科大霍英东研究院 Wind power generation controller
CN104348389B (en) * 2013-08-07 2018-08-28 广州市香港科大霍英东研究院 Wind power generation controller
CN104852455A (en) * 2015-05-20 2015-08-19 徐伯琴 Blower impeller of sewage treatment equipment power system
CN106208071A (en) * 2015-05-29 2016-12-07 通用电气公司 Hybrid AC and DC distribution system and using method
CN105244913A (en) * 2015-11-02 2016-01-13 国网天津市电力公司 Small grid-connected wind power generation system and control method thereof
CN105680470A (en) * 2015-11-02 2016-06-15 国网天津市电力公司 Wind power generation system and energy management control method capable of adapting tosmall-sized wind field characteristics
CN105680470B (en) * 2015-11-02 2018-02-06 国网天津市电力公司 Adapt to the wind generator system and energy management control method of Miniature wind field characteristic
CN114157125A (en) * 2021-12-06 2022-03-08 深圳市迪浦电子有限公司 Power converter and system

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Owner name: GUANGDONG TENFO ELECTRIC GROUP CO., LTD.

Free format text: FORMER OWNER: GUANGDONG TENFO WIND-SOLAR-TIDAL POWER GENERATION EQUIPMENT CO., LTD.

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Free format text: CORRECT: ADDRESS; FROM: 528437 NO. 52, JIANGLING AVENUE, TORCH HIGH-TECH. DEVELOPMENT ZONE, ZHONGSHAN CITY, GUANGDONG PROVINCE TO: 528437 BUILDING B, NO. 53, JIANGLING WEST ROAD, TORCH HIGH-TECH. DEVELOPMENT ZONE, ZHONGSHAN CITY, GUANGDONG PROVINCE

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Effective date of registration: 20110602

Address after: 528437 B building, No. 53 West Jiangling Road, torch hi tech Development Zone, Guangdong, Zhongshan

Applicant after: Guangdong Tenfo Electrical Group Co., Ltd.

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Applicant before: Guangdong Tenfo Fengguangchao Power Equipment Co., Ltd.

C02 Deemed withdrawal of patent application after publication (patent law 2001)
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Open date: 20100922