CN103607164B - A kind of apparatus and method of administering winch RHVC peak voltage - Google Patents
A kind of apparatus and method of administering winch RHVC peak voltage Download PDFInfo
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- CN103607164B CN103607164B CN201310585032.8A CN201310585032A CN103607164B CN 103607164 B CN103607164 B CN 103607164B CN 201310585032 A CN201310585032 A CN 201310585032A CN 103607164 B CN103607164 B CN 103607164B
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Abstract
The present invention relates to a kind of apparatus and method of administering winch RHVC peak voltage, this device comprises diode D1-D12, resistive element R1-R13, capacitor C1-C2, voltage-stabiliser tube Z1-Z10. By reducing the rate of change dv/dt of frequency converter output voltage, reduce the motor side overshoot voltage causing because driving cable is long, protection electrical machine insulation; reduce shaft current, extend cable and electrical machinery life, reduce motor temperature; reduce noise of motor, reduce electromagnetic interference, improve system reliability.
Description
Technical field
The present invention relates to a kind of method of administering winch RHVC peak voltage, be applicable to adopt frequency conversion to adjustThe mine hoist electric drive system of speed technology.
Background technology
At present, the electric drive system of China's underground mine mine hoist mainly contains: promote for large-scale mineMachine, mainly adopts DC drive system, also adopts dc motor-dc generator system and IGCT unsteady flowDevice-DC motor system; These two kinds of systems all exist the intrinsic shortcoming of dc motor, as not high in efficiency,Maintenance load is larger etc. For medium and small elevator, the A.C. transmission systems that adopt, as adopted moreExchange wound-rotor motor, use the speed governing of rotor convert resistance, although the letter of this electric drive system equipmentSingle, but it is step speed regulation, speed adjusting performance is poor, and efficiency is low, and a large amount of power consumptions is at motor rotor resistanceUpper, and reliability is also poor.
The developing direction of mine hoist electric drive system in mine hoist by Application of Frequency Conversion,In the frequency converter course of work, need DC voltage to be transformed into PWM voltage, when PWM voltage is applied on motorTime, can on the winding of motor, produce peak voltage, the amplitude maximum of peak voltage can reach dc bus electricityPress 2 times. Too high peak voltage is added on the coil of motor stator, and coil is caused to voltge surge, frequentPeak voltage impact can cause motor premature failure. Therefore need to study a kind of RHVC spike of administeringThe method of voltage.
Summary of the invention
In order to overcome defect of the prior art, the invention provides a kind of winch RHVC spike electricity of administeringThe apparatus and method of pressing, the rate of change dv/dt of minimizing frequency converter output voltage, reduces because driving cable is longThe motor side overshoot voltage causing, protection electrical machine insulation, reduces shaft current, extends cable and electrical machinery life,Reduce motor temperature, reduce noise of motor, reduce electromagnetic interference, improve system reliability.
The present invention is achieved through the following technical solutions:
Administer a device for winch RHVC peak voltage, it is characterized in that comprising diode D1-D12、Resistive element R1-R13, capacitor C1-C2, voltage-stabiliser tube Z1-Z10。
Described diode D1-D4Respectively with resistance R1-R4Parallel connection, then A phase in series, D5-D8Respectively with resistanceR5-R8Parallel connection, then B phase in series, D9-D12Respectively with resistance R9-R12Parallel connection, then C phase in series,Thereby formation three phase rectifier.
R1、R5、R9Upper end links together, then with C1、C2One end after parallel connection is connected, R4、R8、R12UnderEnd links together, then with C1、C2The other end after parallel connection is connected. Voltage-stabiliser tube Z1Negative pole and C2Upper end phaseConnect then Z1-Z5Both positive and negative polarity connects in turn, voltage-stabiliser tube Z10Positive pole and C2Lower end be connected, then Z10-Z6JustNegative pole is connected in turn, R13One end and Z5Positive pole be connected, the other end and Z6Negative pole be connected.
Adopt a method for foregoing improvement winch RHVC peak voltage, it is characterized in that working asWhile producing overvoltage, through diode D1-D12 charges to capacitor C 1, C2, thereby is cushioned, and has reducedDi/dt, has reduced overshoot voltage. After overvoltage disappears, the electric charge on C1, C2 discharges to resistance R 1-R12,Wait for that next cycle absorbs again.
Di/dt described in the present invention represents current changing rate.
Beneficial effect:
The present invention is simple in structure, reasonable in design, easy to operate, has high practicality. By adopting harmonic waveSpine pulse absorb device, reduces the rate of change dv/dt of frequency converter output voltage greatly, has reduced motor side mistakeRush voltage, reduce electrical fault incidence, extended its life-span.
Brief description of the drawings
Below in conjunction with drawings and the embodiments, the present invention is further detailed explanation:
Fig. 1 is the schematic diagram of the device of improvement winch RHVC peak voltage of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, further set forth the present invention.
By finding out in figure, a kind of device of administering winch RHVC peak voltage, its feature existsIn comprising diode D1-D12, resistive element R1-R13, capacitor C1-C2, voltage-stabiliser tube Z1-Z10。
Described diode D1-D4Respectively with resistance R1-R4Parallel connection, then A phase in series, D5-D8Respectively with resistanceR5-R8Parallel connection, then B phase in series, D9-D12Respectively with resistance R9-R12Parallel connection, then C phase in series,Thereby formation three phase rectifier.
R1、R5、R9Upper end links together, then with C1、C2One end after parallel connection is connected, R4、R8、R12UnderEnd links together, then with C1、C2The other end after parallel connection is connected. Voltage-stabiliser tube Z1Negative pole and C2Upper end phaseConnect then Z1-Z5Both positive and negative polarity connects in turn, voltage-stabiliser tube Z10Positive pole and C2Lower end be connected, then Z10-Z6JustNegative pole is connected in turn, R13One end and Z5Positive pole be connected, the other end and Z6Negative pole be connected.
Adopt a method for foregoing improvement winch RHVC peak voltage, it is characterized in that working asWhile producing overvoltage, through diode D1-D12To capacitor C1、C2Charging, thus cushioned, reduce di/dt,Reduce overshoot voltage. After overvoltage disappears, C1、C2On electric charge to resistance R1-R12Discharge, wait for nextCycle absorbs again, because voltage on electric capacity can not suddenly change, according to true peak voltage and the safety that needs restrictionMagnitude of voltage, calculates the capacitance needing, simultaneously according to calculating resistance value discharge time. Voltage-stabiliser tube Z1-Z10Capacitance voltage is carried out to voltage stabilizing, R13Can play metering function to circuit.
Should be understood that these embodiment are only not used in and limit the scope of the invention for the present invention is described. In addition shouldUnderstand, after having read the content of the present invention's instruction, those skilled in the art can do various changing to the present inventionMove or amendment, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (2)
1. a device of administering winch RHVC peak voltage, is characterized in that,Comprise diode D1-D12, resistive element R1-R13, capacitor C1-C2, voltage-stabiliser tube Z1-Z10; DescribedDiode D1-D4Respectively with resistance R1-R4Parallel connection, then A phase in series, D5-D8RespectivelyWith resistance R5-R8Parallel connection, then B phase in series, D9-D12Respectively with resistance R9-R12AndConnection, then C phase in series, thus form three phase rectifier; A phase, B phase and C phase defeatedEnter the output that end is connected in RHVC;
R1、R5、R9Upper end links together, then with C1、C2One end after parallel connection is connected,R4、R8、R12Lower end links together, then with C1、C2The other end after parallel connection is connected; SurelyPressure pipe Z1Negative pole and C2Upper end be connected, then Z1-Z5Both positive and negative polarity connects in turn, voltage stabilizingPipe Z10Positive pole and C2Lower end be connected, then Z10-Z6Both positive and negative polarity be in turn connected, R13OneEnd and Z5Positive pole be connected, the other end and Z6Negative pole be connected.
2. one kind adopts improvement winch RHVC spike electricity as claimed in claim 1The method that the device of pressing is administered RHVC peak voltage, is characterized in that, works as productWhen raw overvoltage, through diode D1-D12To capacitor C1、C2Charging, thus cushioned,Reduce di/dt, reduced overshoot voltage, after overvoltage disappears, C1、C2On electric charge toResistance R1-R12Discharge, wait for that next cycle absorbs again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310585032.8A CN103607164B (en) | 2013-11-19 | 2013-11-19 | A kind of apparatus and method of administering winch RHVC peak voltage |
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| CN201310585032.8A CN103607164B (en) | 2013-11-19 | 2013-11-19 | A kind of apparatus and method of administering winch RHVC peak voltage |
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| CN103607164A CN103607164A (en) | 2014-02-26 |
| CN103607164B true CN103607164B (en) | 2016-05-11 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201821256U (en) * | 2010-10-25 | 2011-05-04 | 上海鹰峰电子科技有限公司 | Frequency converter output suppressing peak voltage filter |
| CN202042906U (en) * | 2011-05-13 | 2011-11-16 | 北京Abb电气传动系统有限公司 | Voltage spike filter |
| CN202068375U (en) * | 2011-05-18 | 2011-12-07 | 葛音 | Transient voltage suppression high-power-factor rotor frequency conversion and speed regulation controller |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MX2007006440A (en) * | 2004-12-28 | 2008-03-11 | Vestas Wind Sys As | Method of controlling a wind turbine connected to an electric utility grid. |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201821256U (en) * | 2010-10-25 | 2011-05-04 | 上海鹰峰电子科技有限公司 | Frequency converter output suppressing peak voltage filter |
| CN202042906U (en) * | 2011-05-13 | 2011-11-16 | 北京Abb电气传动系统有限公司 | Voltage spike filter |
| CN202068375U (en) * | 2011-05-18 | 2011-12-07 | 葛音 | Transient voltage suppression high-power-factor rotor frequency conversion and speed regulation controller |
Non-Patent Citations (1)
| Title |
|---|
| 高频PWM脉冲波传输引起电机端子过电压的研究;万健如等;《中国电机工程学报》;20011130;第21卷(第11期);第43-47页 * |
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Inventor after: Yu Yuesen Inventor after: Lv Fengxin Inventor after: Chen Hehe Inventor after: Liu Junting Inventor after: Xiu Junrui Inventor after: Lv Wei Inventor after: Qi Wenyan Inventor after: Wu Xiaojie Inventor before: Yu Yuesen Inventor before: Lv Fengxin Inventor before: Lv Wei Inventor before: Qi Wenyan Inventor before: Zhang Chun Inventor before: Wu Xiaojie |
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Effective date of registration: 20160920 Address after: 221116 Xuzhou University Road,, Jiangsu, China University of Mining and Technology Patentee after: China University of Mining & Technology Patentee after: Wang Lou colliery, Dongshan, Shandong Co., Ltd Address before: 221116 Xuzhou University Road,, Jiangsu, China University of Mining and Technology Patentee before: China University of Mining & Technology |
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