CN201994906U - Rotary main control module of brushless synchronous motor - Google Patents
Rotary main control module of brushless synchronous motor Download PDFInfo
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- CN201994906U CN201994906U CN2011201411328U CN201120141132U CN201994906U CN 201994906 U CN201994906 U CN 201994906U CN 2011201411328 U CN2011201411328 U CN 2011201411328U CN 201120141132 U CN201120141132 U CN 201120141132U CN 201994906 U CN201994906 U CN 201994906U
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Abstract
The utility model relates to a rotary main control module of a brushless synchronous motor, comprising an alternating-current exciter, a controllable silicon rectifier, an armature excitation coil, a starting resistor and a control logic circuit; the control logic circuit is arranged in a closed metal shell which is filled with epoxy resin; the starting resistor is connected with a diode in series and then connected with the armature excitation coil in parallel; the cathode of the diode is connected with the anode output end of the controllable silicon rectifier; a controllable silicon opposite to the polarity of the diode is connected on the diode in parallel; and the diode and the controllable silicon are conducted to form an asynchronous start-up loop of the motor. The rotary main control module of a brushless synchronous motor is compact in structure and convenient to maintain; the control logic circuit solidified in the metal shell by the epoxy resin solves the destructive effect of the centrifugal force in the motor rotation to a discrete element well; and the starting electronic switch of the controllable silicon solves the problem that the mechanical centrifugal switch has high maintenance rate. The rotary main control module improves the operation reliability of the brushless synchronous motor and reduces the operation cost.
Description
Technical field
The utility model belongs to Motor Control Field, be particularly related to a kind of brushless synchronous motor rotation master control module, this module adopts electronic switch to substitute the control of mechanical type centrifugal switch to starting resistance, whole control logic circuits with in housing of the fixing sealing of epoxy resin, has been improved the operational reliability of brushless synchronous machine.
Background technology
The rotating rectifier dish of traditional brushless synchronous motor is equipped with AC exciter and excitation control circuit; and excitation control circuit all is to be connected to form by discrete component; therefore the installation and control to discrete component requires high; because; discrete component equally also is in the rotation in the rotary course of synchronous machine; action of centrifugal force exerts an influence to discrete component through regular meeting; do not note slightly operation troubles occurring; simultaneously; when changing synchronous operation over to, asynchronous starting need excise the starting resistance that rotor is made up of conductor bar; traditional method is to adopt the mechanical type centrifugal switch to realize; mechanical type centrifugal switch maintenance rate height; control precision is low, and these have all increased operating cost.
Summary of the invention
The purpose of this utility model is to propose a kind of brushless synchronous motor rotation master control building block technique scheme, this technical scheme concentrates on logic control circuit in the housing, and casting epoxy resin is fixed the discrete component mutually insulated of control circuit in housing, has solved the influence of centrifugal force to discrete component; In the starting resistance loop, utilize electronic switch to replace the mechanical type centrifugal switch, improved the startup reliability of synchronous machine.
To achieve these goals, the technical solution of the utility model is: a kind of brushless synchronous motor rotation master control module comprises AC exciter, silicon controlled rectifier, armature magnet exciting coil, starting resistance and control logic circuit; The three-phase alternating current output of described AC exciter is connected to the input of silicon controlled rectifier, the direct current output of described silicon controlled rectifier is connected to the armature magnet exciting coil, described control logic circuit comprises controllable silicon lock-out pulse trigger control circuit, and described controllable silicon lock-out pulse trigger control circuit comprises pulse series generator, synchronous signal circuit, synchronous triggering control circuit; The triggering signal of synchronous triggering control circuit is connected to silicon controlled rectifier; Wherein, connect with armature Li magnet-wire Quan And behind diode of described starting resistance serial connection, the negative pole of described diode is connected with the output of the positive pole of silicon controlled rectifier, on diode with diode Ji Xiang anti-And be connected to a controllable silicon, diode and silicon controlled conducting form motor asynchronous starting loop, described control logic circuit also includes slippage and detects and the start-up control circuit, on starting resistance, be connected with a slippage holding wire, described slippage holding wire is connected to slippage detection and the input of start-up control circuit signal, slippage detects and the input that is connected to the synchronous triggering control circuit is exported in the excitation input control of start-up control circuit, and slippage detects and the start-up control output of start-up control circuit is connected to the controllable silicon that connects with Er Ji Guan And.
Described control logic circuit is welded on respectively on power circuit plate, master control wiring board, electric capacity wiring board and the binding post wiring board, four wiring boards are installed in the metal shell of a sealing, four wiring boards are not less than 30mm apart, be full of epoxy resin in the metal shell, the binding post on the binding post wiring board is drawn from a side of metal shell.
Described slippage detects and the start-up control circuit comprises that a thyristor gating circuit and frequency ratio are than microprocessor, described slippage holding wire is connected to the frequency signal receiving terminal of microprocessor, and the control output of microprocessor is connected to the input of synchronous triggering control circuit and the controllable silicon triggering input that connects with Er Ji Guan And respectively.
Described pulse series generator comprises pulse generator and power amplifier, three photoelectrical couplers of output serial connection of power amplifier, and three photoelectrical couplers produce three group pulse strings; Described synchronous signal circuit comprises three groups of photoelectrical couplers and three and door, each group photoelectrical coupler has two, three groups of photoelectrical couplers connect into the synchronous output circuit of three-phase signal, three groups of photoelectrical couplers input connect the three-phase alternating current output of AC exciter, form the three synchronised square waves output synchronous with three-phase alternating current output at the output of three groups of photoelectrical couplers, the output of three synchronised square waves and described three group pulses were ganged up three and were exported three groups of synchronization bursts with Men Xiangyu; Described synchronous triggering control circuit comprises three two inputs and door, and inputs of three two inputs are three groups of synchronization bursts, and another inputs of three two inputs are that described slippage detects and the excitation input of start-up control circuit is controlled output.
The beneficial effects of the utility model are: the utility model compact conformation, be convenient to safeguard, well solved centrifugal force in the motor rotation to the destruction of discrete component by the control logic circuit of epoxy resin cure in metal shell, adopt silicon controlled to start electronic switch control precision height, solved mechanical type centrifugal switch maintenance rate height, problem that control precision is low; The utility model has improved the operational reliability of brushless synchronous motor, has reduced operating cost.
Below in conjunction with drawings and Examples the utility model being done one describes in detail.
Description of drawings
Fig. 1 is the utility model electrical block diagram;
Fig. 2 is the utility model control logic circuit schematic diagram;
Fig. 3 is the utility model control logic circuit assembly structure schematic diagram.
Embodiment
A kind of brushless synchronous motor rotation master control module embodiment, referring to Fig. 1, Fig. 2 and Fig. 3, described module comprises armature magnet exciting coil 3, starting resistance 4 and the control logic circuit 5 in AC exciter 1, silicon controlled rectifier 2, the synchronous motor; Described silicon controlled rectifier, control logic circuit and starting resistance are installed on the rectifying disc of synchronous electric motor rotor, described silicon controlled rectifier is a three-phase half controlled bridge formula rectification circuit, described starting resistance is composed in series by a plurality of resistance, the three-phase alternating current output U of described AC exciter, V, W is connected to the input of silicon controlled rectifier, the direct current output of described silicon controlled rectifier is connected to the armature magnet exciting coil, described control logic circuit comprises controllable silicon lock-out pulse trigger control circuit 5-1, and described controllable silicon lock-out pulse trigger control circuit comprises pulse series generator 5-1-1, synchronous signal circuit 5-1-2, synchronous triggering control circuit 5-1-3; The triggering signal of synchronous triggering control circuit is connected to silicon controlled rectifier; Wherein, diode of described starting resistance serial connection 6 backs connect with armature Li magnet-wire Quan And, the negative pole of described diode is connected with the output of the positive pole of silicon controlled rectifier, on diode with diode Ji Xiang anti-And be connected to a controllable silicon 7, diode and silicon controlled conducting form motor asynchronous starting loop, described control logic circuit also includes slippage and detects and start-up control circuit 5-2 and rectifier power source 5-3, the input of rectifier power source connects the three-phase output of AC exciter, rectifier power source is told two independently DC power supply, is respectively controllable silicon lock-out pulse trigger control circuit and slippage and detects and the start-up control circuit supply; On starting resistance, be connected with a slippage holding wire 8, described slippage holding wire is connected to slippage detection and the input of start-up control circuit signal, slippage detects and the control input that 5-2-1 is connected to the synchronous triggering control circuit is exported in the excitation input control of start-up control circuit, and slippage detects and the start-up control output 5-2-2 of start-up control circuit is connected to the controllable silicon that connects with Er Ji Guan And.
In the present embodiment in order to solve the influence of centrifugal force to discrete component, as shown in Figure 3, described control logic circuit is welded on respectively on power circuit plate 9, master control wiring board 10, electric capacity wiring board 11 and the binding post wiring board 12, four wiring boards are installed in the metal shell 13 of a sealing, four wiring boards are not less than 30mm apart, be full of epoxy resin 14 in the metal shell, the binding post 12-1 on the binding post wiring board draws from a side of metal shell.
In the present embodiment, described slippage detects and the start-up control circuit comprises that a thyristor gating circuit and frequency ratio are than microprocessor, described slippage holding wire is connected to the frequency signal receiving terminal of microprocessor, and the control output of microprocessor is connected to the input of synchronous triggering control circuit and the controllable silicon triggering input that connects with Er Ji Guan And respectively.
In the present embodiment, described pulse series generator comprises pulse generator 5-1-1-1 and power amplifier 5-1-1-2, three photoelectrical coupler 5-1-1-3 of output serial connection of power amplifier, and three photoelectrical couplers produce three group pulse string 5-1-1-4; Described synchronous signal circuit comprises three groups of photoelectrical coupler 5-1-2-1 and three and a door 5-1-2-2, each group photoelectrical coupler has two, three groups of photoelectrical couplers connect into the synchronous output circuit of three-phase signal, three groups of photoelectrical couplers input connect three-phase alternating current output U, V, the W of AC exciter, form the three synchronised square waves output 5-1-2-3 synchronous with three-phase alternating current output at the output of three groups of photoelectrical couplers, the output of three synchronised square waves and described three group pulses were ganged up three and were exported three groups of synchronization burst 5-1-2-4 with Men Xiangyu; Described synchronous triggering control circuit comprises three two inputs and a 5-1-3-1, and inputs of three two inputs are three groups of synchronization bursts, and another input of three two inputs is that described slippage detects and 5-2-1 is exported in the excitation input control of start-up control circuit.
Described three groups of photoelectrical couplers connect into the synchronous output circuit of three-phase signal: U(A) two of phase photoelectric tube U1, U2 series connection, U is connected to the head end and the tail end of two series connection photoelectric tubes mutually, the mid point of two series connection photoelectric tubes is connected to V(B) phase, in like manner, V(B) be connected to head end and the tail end of two series connection photoelectric tube V1, V2 mutually, the mid point of two series connection photoelectric tubes is connected to W(C) phase, in like manner, W is connected to head end and the tail end of two series connection photoelectric tube W1, W2 mutually, and the mid point of two series connection photoelectric tubes is connected to U(A) phase; U(A) phase, V(B) phase, W(C) output of second photoelectric tube of phase is synchronizing signal output, while U(A) output of first photoelectric tube of phase is connected to V(B) output of second photoelectric tube mutually, V(B) output of first photoelectric tube of phase is connected to W(C) output of second photoelectric tube mutually, W(C) output of first photoelectric tube of phase is connected to U(A) output of second photoelectric tube mutually.
The brushless synchronous motor start-up course is: when the motor stator energising, because the diode of starting resistance serial connection has formed unidirectional circuit with magnet exciting coil, therefore rotor rotation after stator is switched on, this moment, AC excitation motor output AC electricity was after the rectification of control logic circuit, be respectively detection of controllable silicon lock-out pulse trigger control circuit 5-1 and slippage and start-up control circuit 5-2 power supply is provided, slippage detects and the start-up control circuit is in off state with silicon controlled rectifier, the controllable silicon triggering and conducting that slippage detects and the start-up control circuit will connect with Er Ji Guan And, at this moment, magnet exciting coil has formed ac circuit, the resistance of serial connection has improved the staring torque of motor and has accelerated startup, slippage detects and the frequency ratio of start-up control circuit constantly receives the rotor that the slippage holding wire transmits and the slippage of stator rotating magnetic field than microprocessor, judge rotor speed, when microprocessor judges goes out rotor speed and reaches stator rotating magnetic field 90%, slippage detects and the control output that 5-2-1 starts the synchronous triggering control circuit is exported in the excitation input control of start-up control circuit, putting silicon controlled rectifier is fully conducting state, with the AC rectification of excitation AC machine output is that direct current feeds the armature magnet exciting coil, cut off the silicon controlled trigger signal that connects with Er Ji Guan And simultaneously, the diode of this moment is to be operated in a kind of effect that increases excitation having under the situation of slippage, and motor drops into synchronous operation.
Claims (4)
1. brushless synchronous motor rotation master control module comprises AC exciter, silicon controlled rectifier, armature magnet exciting coil, starting resistance and control logic circuit; The three-phase alternating current output of described AC exciter is connected to the input of silicon controlled rectifier, the direct current output of described silicon controlled rectifier is connected to the armature magnet exciting coil, described control logic circuit comprises controllable silicon lock-out pulse trigger control circuit, and described controllable silicon lock-out pulse trigger control circuit comprises pulse series generator, synchronous signal circuit, synchronous triggering control circuit; The triggering signal of synchronous triggering control circuit is connected to silicon controlled rectifier; It is characterized in that, connect with armature Li magnet-wire Quan And behind diode of described starting resistance serial connection, the negative pole of described diode is connected with the output of the positive pole of silicon controlled rectifier, on diode with diode Ji Xiang anti-And be connected to a controllable silicon, diode and silicon controlled conducting form motor asynchronous starting loop, described control logic circuit also includes slippage and detects and the start-up control circuit, on starting resistance, be connected with a slippage holding wire, described slippage holding wire is connected to slippage detection and the input of start-up control circuit signal, slippage detects and the input that is connected to the synchronous triggering control circuit is exported in the excitation input control of start-up control circuit, and slippage detects and the start-up control output of start-up control circuit is connected to the controllable silicon that connects with Er Ji Guan And.
2. brushless synchronous motor rotation master control module according to claim 1, it is characterized in that, described control logic circuit is welded on respectively on power circuit plate, master control wiring board, electric capacity wiring board and the binding post wiring board, four wiring boards are installed in the metal shell of a sealing, four wiring boards are not less than 30mm apart, be full of epoxy resin in the metal shell, the binding post on the binding post wiring board is drawn from a side of metal shell.
3. brushless synchronous motor rotation master control module according to claim 1, it is characterized in that, described slippage detects and the start-up control circuit comprises that a thyristor gating circuit and frequency ratio are than microprocessor, described slippage holding wire is connected to the frequency signal receiving terminal of microprocessor, and the control output of microprocessor is connected to the input of synchronous triggering control circuit and the controllable silicon triggering input that connects with Er Ji Guan And respectively.
4. brushless synchronous motor rotation master control module according to claim 1, it is characterized in that, described pulse series generator comprises pulse generator and power amplifier, three photoelectrical couplers of output serial connection of power amplifier, and three photoelectrical couplers produce three group pulse strings; Described synchronous signal circuit comprises three groups of photoelectrical couplers and three and door, each group photoelectrical coupler has two, three groups of photoelectrical couplers connect into the synchronous output circuit of three-phase signal, three groups of photoelectrical couplers input connect the three-phase alternating current output of AC exciter, form the three synchronised square waves output synchronous with three-phase alternating current output at the output of three groups of photoelectrical couplers, the output of three synchronised square waves and described three group pulses were ganged up three and were exported three groups of synchronization bursts with Men Xiangyu; Described synchronous triggering control circuit comprises three two inputs and door, and inputs of three two inputs are three groups of synchronization bursts, and another inputs of three two inputs are that described slippage detects and the excitation input of start-up control circuit is controlled output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201411328U CN201994906U (en) | 2011-05-06 | 2011-05-06 | Rotary main control module of brushless synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201411328U CN201994906U (en) | 2011-05-06 | 2011-05-06 | Rotary main control module of brushless synchronous motor |
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| Publication Number | Publication Date |
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| CN201994906U true CN201994906U (en) | 2011-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201411328U Expired - Lifetime CN201994906U (en) | 2011-05-06 | 2011-05-06 | Rotary main control module of brushless synchronous motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102170257A (en) * | 2011-05-06 | 2011-08-31 | 北京前锋科技有限公司 | Rotatable master control module of brushless synchronous motor |
| WO2015028322A1 (en) * | 2013-08-30 | 2015-03-05 | Microgen Engine Corporation Holding Bv | Interfacing a prime mover driven alternator with an existing power network |
-
2011
- 2011-05-06 CN CN2011201411328U patent/CN201994906U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102170257A (en) * | 2011-05-06 | 2011-08-31 | 北京前锋科技有限公司 | Rotatable master control module of brushless synchronous motor |
| WO2015028322A1 (en) * | 2013-08-30 | 2015-03-05 | Microgen Engine Corporation Holding Bv | Interfacing a prime mover driven alternator with an existing power network |
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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 |
Granted publication date: 20110928 |
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| CX01 | Expiry of patent term |