CN201699653U - Feedback mine hoist variable-frequency speed regulating device - Google Patents
Feedback mine hoist variable-frequency speed regulating device Download PDFInfo
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- CN201699653U CN201699653U CN2010202236459U CN201020223645U CN201699653U CN 201699653 U CN201699653 U CN 201699653U CN 2010202236459 U CN2010202236459 U CN 2010202236459U CN 201020223645 U CN201020223645 U CN 201020223645U CN 201699653 U CN201699653 U CN 201699653U
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Abstract
The utility model discloses a feedback mine hoist variable-frequency speed regulating device, which mainly modifies a rectifier circuit of a double-quadrant variable-frequency speed regulating device into a rectifier feedback circuit and particularly comprises a reactor, the rectifier feedback circuit, a direct-current intermediate circuit and an inverter circuit. The rectifier feedback circuit adopts an IGBT power module. Since the IGBT power module can realize bidirectional flowing of energy, the speed regulating device can eliminate harmonic pollution of a power grid by regulating inputted power factor. On the other hand, the device can feed back energy generated by feedback of a motor to the power grid, and can achieve the effect of saving power more than 30%. Additionally, the feedback mine hoist variable-frequency speed regulating device can conveniently realize starting, stepless speed regulation and braking of a hoist by the aid of control of a programmable controller, is wide in speed regulation range, high in speed regulation precision, smooth in accelerating and decelerating process and small in current impact, and greatly reduces strength of mechanical impact.
Description
Technical field
The utility model relates to mine hoist, relates in particular to the RHVC of mine hoist.
Background technology
At present, the mine hoist of China, quite a few is arranged is powerful electric motor driven.Because historical reasons, this part elevator is to continue to use the interchange wound rotor motor always, adopts the mode of speed regulation of rotor crosstalk resistance.This kind mode of speed regulation is backward in technique, and operational effect is very undesirable.Obtain the then most of scheme that adopts DC Transmission of more high performance elevator greater than 500KW and hope, DC motor is owing to the complexity of its structure, and what bring then is maintenance cost high in the running.
At present, the mine hoist that has adopts two quadrant RHVC, and its circuit is connected in sequence by three-phase reactor, rectification circuit, direct-flow intermediate circuit, inverter circuit.Because rectification circuit adopts diode rectifier bridge, the two-way flow of energy can't be realized,, the resistance braking unit can only be on two quadrant frequency converters, increased so have no idea to send the energy of motor feedback system back to electrical network, the energy consumption of electromotor feedback is fallen, and this part electric energy will waste.In addition, in some powerful application, diode rectifier bridge produces serious harmonic pollution to electrical network.
Summary of the invention
The purpose of this utility model is the above-mentioned deficiency that overcomes two quadrant RHVC, and a kind of feed-back type mine hoist RHVC is provided, and is used for the frequency control of transportation elevator drive motor under the coal mine.
The utility model is the circuit improvement to two quadrant RHVC, mainly is to change rectification circuit into the rectification feedback circuit.That is to say that feed-back type mine hoist RHVC is to be connected in sequence by reactor, rectification feedback circuit, direct-flow intermediate circuit, inverter circuit.Described rectification feedback circuit adopts IGBT power model (igbt).
Because the IGBT power model can be realized the two-way flow of energy, produce the PWM control impuls with DSP high-speed, high operational capability, so can eliminate harmonic pollution by adjusting the power factor of input to electrical network.On the other hand can be with the anti-electrical network of delivering to of energy of electromotor feedback generation, feedback energy directly is defeated by electrical network and is not subjected to the restriction of feedback energy size, wide accommodation, energy-saving effect is obvious, and energy-saving effect can reach more than 30%.Also can pass through Programmable Logic Controller (PLC) control in addition easily, realize startup, speed governing, deceleration and the braking of elevator automatically, realize stepless speed regulation, speed-regulating range width, the adjusting speed accuracy height, the acceleration, deceleration process is level and smooth, rush of current is little, has alleviated the intensity of mechanical shock greatly.
Description of drawings
Fig. 1 is the circuit diagram of the utility model embodiment.
Among the figure, 1-reactor, 2-IGBT power model, 3-direct-flow intermediate circuit, 4-inverter circuit.
Embodiment
As shown in Figure 1, a kind of feed-back type mine hoist RHVC is to be connected in sequence by reactor 1, IGBT power model 2, direct-flow intermediate circuit 3, inverter circuit 4.Described IGBT power model 2 is igbts, constitutes the rectification feedback circuit.Described reactor 1 has three, whenever on three-phase AC line is connected in series one mutually.Those skilled in the art can implement according to circuit shown in Figure 1.
Claims (1)
1. a feed-back type mine hoist RHVC is characterized in that, it is formed by reactor, rectification feedback circuit, direct-flow intermediate circuit, inverter circuit serial connection; Described rectification feedback circuit adopts the IGBT power model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202236459U CN201699653U (en) | 2010-06-04 | 2010-06-04 | Feedback mine hoist variable-frequency speed regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202236459U CN201699653U (en) | 2010-06-04 | 2010-06-04 | Feedback mine hoist variable-frequency speed regulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201699653U true CN201699653U (en) | 2011-01-05 |
Family
ID=43400898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202236459U Expired - Fee Related CN201699653U (en) | 2010-06-04 | 2010-06-04 | Feedback mine hoist variable-frequency speed regulating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201699653U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102556623A (en) * | 2011-12-20 | 2012-07-11 | 湖北爱默生自动化系统工程有限公司 | Downhill material conveyor belt control system |
-
2010
- 2010-06-04 CN CN2010202236459U patent/CN201699653U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102556623A (en) * | 2011-12-20 | 2012-07-11 | 湖北爱默生自动化系统工程有限公司 | Downhill material conveyor belt control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110105 Termination date: 20130604 |