CN201383688Y - Impulse type charger of wind power variable pitch system - Google Patents
Impulse type charger of wind power variable pitch system Download PDFInfo
- Publication number
- CN201383688Y CN201383688Y CN 200920035596 CN200920035596U CN201383688Y CN 201383688 Y CN201383688 Y CN 201383688Y CN 200920035596 CN200920035596 CN 200920035596 CN 200920035596 U CN200920035596 U CN 200920035596U CN 201383688 Y CN201383688 Y CN 201383688Y
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- transformer
- pond
- wind power
- type charger
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Abstract
The utility model discloses an impulse type charger of a wind power variable pitch system, which comprises a power supply module, a transformer, a monitoring unit and a voltage adjusting circuit. The AC is rectified into a 100HZ to 200HZ low-frequency DC pulsating current by adopting a single-phase transformer, and the charging voltage is adjusted through controlling a tap lead at the input terminal of the transformer, so that the utility model adopts the structure greatly improves the reliability of the charger and the adaptability of the working range of the charger. The utility model adopts an impulse charging method in the charging process; and the battery is charged with periodical pulsating current, so that the battery has time to restore into an original mode, and the influence of the polarization phenomenon is reduced.
Description
Technical field
The utility model relates to a kind of wind power plant, relates in particular to the pulse type charger that charges to the backup battery group that is exclusively used in a kind of wind power pitch-controlled system.
Background technology
Along with non-renewable energy resources face exhausted awkward situation at world wide, for satisfying suitability for industrialized production and the human lives is required, people are to the concern of solar energy, wind-force, these regenerative resources of waterpower and utilize day by day and promote.Wherein, wind power generation is a kind of relatively ripe energy development technology that developed, especially on the plateau, there is popularization and application widely in area such as coastal.
In wind power pitch-controlled system, the timely electric energy supplement of batteries when guaranteeing electric network power-fail, power to the load at the appointed time, guarantee that pitch-controlled system can reliably working a period of time, be by will be in support the battery pack of power supply be articulated on the dc bus of motor driver and realize, as shown in Figure 1.When the electrical network operate as normal, the backup battery group is operated in floating charge state, plays the effect of smothing filtering and maintenance capacity (replenishing the capacitance loss of self discharge).In case electric network power-fail, the backup battery group is devoted oneself to work immediately, is electric; Work as power system restoration, power module charges to the backup battery group immediately.
In wind power pitch-controlled system, the backup battery group generally adopts valve control maintenance-free lead accumulator, and generally adopts switching power circuit to the charger of its charging, controls charged state by the voltage of microcomputer monitoring battery.Export certain voltage by the PWM that adjusts switching tube, battery is charged; And carry out temperature-compensating according to the variation of battery temperature, be a kind of charging modes of switch power supply type.The instantaneous rising of the voltage of this charging modes, electric current is less relatively, makes that the charging interval of battery is longer; And be easy to generate oscillatory occurences and the phenomenon of overcharging when being full of at batteries charging.
The utility model content
The purpose of this utility model is to solve the above-mentioned technical problem that prior art exists, provide a kind of more reliably, short pulse type charger of charging interval.
The purpose of this utility model is achieved through the following technical solutions:
A kind of pulse type charger of wind power pitch-controlled system, comprise to charger itself and operating voltage is provided and the power module of charging current is provided to pond to be charged group, transformer, monitoring unit, voltage-regulating circuit, described transformer is connected to power module, is used for the AC rectification of power module is become can be the direct current that pond to be charged group is charged; The DC output end of described transformer is connected with pond to be charged group; Described monitoring unit is connected between described voltage-regulating circuit and the pond to be charged group, is used to gather and discern voltage, electric current and the temperature of pond to be charged group; The signal output part of described monitoring unit is connected with voltage-regulating circuit, the output voltage of described voltage-regulating circuit control transformer.
Further, described voltage-regulating circuit is connected with the tapped coil of transformer, is used for adjusting by the control transformer tap output voltage of transformer.
Again further, also be connected with a filter circuit between the DC output end of described transformer and the pond to be charged group.Described transformer is a single-phase transformer.
Further, described monitoring unit comprises the transducer of the voltage, electric current and the temperature that are used to gather pond to be charged group.
The beneficial effects of the utility model are mainly reflected in: by adopting single-phase transformer, AC rectification is become 100HZ～120HZ low frequency dc pulse electric current, pass through smoothed filter circuit again, the adjustment of charging voltage is to regulate by the tap of control input end, and such structure has improved the adaptability of the working range of the reliability of charger and charger greatly.Use pulse charging method in charging process, charging the battery with periodic pulsating current to make battery recover its original state if having time, reduces the influence of polarization phenomena.
Description of drawings
Below in conjunction with accompanying drawing technical solutions of the utility model are described further:
Fig. 1: the schematic block diagram of the utility model backup battery group management of charging and discharging system.
Fig. 2: the structured flowchart of the utility model pulse type charger.
Fig. 3: the classification constant-current pulse mise-a-la-masse method schematic diagram of the utility model pulse type charger.
Embodiment
The utility model has disclosed a kind of pulse type charger of wind power pitch-controlled system, as shown in Figure 2, comprise to charger itself and operating voltage is provided and provides the power module of charging current, transformer to backup battery group to be charged, monitoring unit, voltage-regulating circuit.Described transformer is connected to power module, is used for the AC rectification of power module is become can be the direct current that pond to be charged group is charged; The DC output end of described transformer is connected with pond to be charged group; Described monitoring unit is connected between described voltage-regulating circuit and the pond to be charged group, is used to gather and discern voltage, electric current and the temperature of pond to be charged group; The signal output part of described monitoring unit is connected with voltage-regulating circuit, the output voltage of described voltage-regulating circuit control transformer.
The charger of present embodiment relates to parameters such as battery operated voltage, operating current, temperature in the process that charges the battery, these all are the important parameters of characterizing battery state.Adopt transducer to extract these parameters, and then cooperate failure diagnosis, report to the police and function such as scene of the accident processing automatically, just can form the battery cell monitoring unit.
Transformer is a single-phase transformer in the utility model, by direct employing Industrial Frequency Transformer AC rectification is become direct current, increase the tap of regulating at secondary side again, change the alternating voltage of secondary side, behind over commutation, form the dc pulse moving voltage of 100～120HZ, circuit design is simple like this, more can increase the reliability of system.
Described voltage-regulating circuit is connected with the tapped coil of transformer, controls charging voltage by monitoring charging voltage and suitable temperature-compensating, and the change of charging voltage is to realize by the tap of adjusting transformer.Again further, also be connected with a filter circuit between the DC output end of described transformer and the pond to be charged group.
Generally, the charging method of lead acid accumulator mainly contains constant current, constant voltage at present.What the utility model charger adopted is the pulse current charge mode.In charging process, as long as charging current is no more than the acceptable electric current of storage battery, internal storage battery just can not produce a large amount of bubbles.The polarization phenomena that produce in the storage battery can hinder charging, and gas efficiency and temperature rise are significantly raise.Therefore, polarizing voltage is the key factor that influences charging rate, and charging the battery with periodic pulsating current to make battery recover its original state if having time, reduces the influence of polarization phenomena.
In the utility model charging process, adopt classification to decide the current impulse rapid charging, what charging current is divided into, as shown in Figure 3.Adopt big electric current when beginning to charge, along with the increase of battery capacity, voltage raises gradually, and current class begins to reduce, and classification reduces with the rising of accumulator voltage to make the pulse amplitude of charging current and width.Adopt this charging modes can eliminate the oscillatory occurences and the problem of overcharging that is prone to when charging is approaching to be full of.
This charging system also has temperature compensation characteristic, 1 ℃ of the every rising of ambient temperature, the float charge voltage of each battery cell 3mV that just descends.Charging voltage will be improved when battery temperature reduces, charging voltage will be reduced when battery temperature raises.Monitoring unit in the present embodiment receives this temperature information, and the output voltage of control transformer.
Claims (5)
1. the pulse type charger of a wind power pitch-controlled system comprises operating voltage to charger itself being provided and providing the power module of charging current to pond to be charged group that it is characterized in that: described pulse type charger comprises transformer, monitoring unit, and voltage-regulating circuit,
Described transformer is connected to power module, is used for the AC rectification of power module is become can be the direct current that pond to be charged group is charged;
The DC output end of described transformer is connected with pond to be charged group;
Described monitoring unit is connected between described voltage-regulating circuit and the pond to be charged group, is used to gather and discern voltage, electric current and the temperature of pond to be charged group;
The signal output part of described monitoring unit is connected with voltage-regulating circuit, the output voltage of described voltage-regulating circuit control transformer.
2. the pulse type charger of wind power pitch-controlled system according to claim 1, it is characterized in that: described voltage-regulating circuit is connected with the tapped coil of transformer, is used for adjusting by the control transformer tap output voltage of transformer.
3. the pulse type charger of wind power pitch-controlled system according to claim 1 is characterized in that: also be connected with a filter circuit between the DC output end of described transformer and the pond to be charged group.
4. the pulse type charger of wind power pitch-controlled system according to claim 1, it is characterized in that: described transformer is a single-phase transformer.
5. the pulse type charger of wind power pitch-controlled system according to claim 1, it is characterized in that: described monitoring unit comprises the transducer of the voltage, electric current and the temperature that are used to gather pond to be charged group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920035596 CN201383688Y (en) | 2009-03-12 | 2009-03-12 | Impulse type charger of wind power variable pitch system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920035596 CN201383688Y (en) | 2009-03-12 | 2009-03-12 | Impulse type charger of wind power variable pitch system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201383688Y true CN201383688Y (en) | 2010-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920035596 Expired - Lifetime CN201383688Y (en) | 2009-03-12 | 2009-03-12 | Impulse type charger of wind power variable pitch system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201383688Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747373A (en) * | 2013-12-31 | 2015-07-01 | 通用电气公司 | System and method used for protecting standby variable-pitch control system of wind turbine battery |
| CN108306399A (en) * | 2016-02-05 | 2018-07-20 | 广东欧珀移动通信有限公司 | Charging system and power supply adaptor |
| US10910852B2 (en) | 2016-07-26 | 2021-02-02 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Charging system, charging method, and power adapter |
-
2009
- 2009-03-12 CN CN 200920035596 patent/CN201383688Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747373A (en) * | 2013-12-31 | 2015-07-01 | 通用电气公司 | System and method used for protecting standby variable-pitch control system of wind turbine battery |
| CN108306399A (en) * | 2016-02-05 | 2018-07-20 | 广东欧珀移动通信有限公司 | Charging system and power supply adaptor |
| CN108306399B (en) * | 2016-02-05 | 2020-04-10 | Oppo广东移动通信有限公司 | Charging system and power adapter |
| US10910852B2 (en) | 2016-07-26 | 2021-02-02 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Charging system, charging method, and power adapter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100113 |