CN201611810U - Device for controlling stator winding connection of rare earth permanent-magnet motor - Google Patents
Device for controlling stator winding connection of rare earth permanent-magnet motor Download PDFInfo
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- CN201611810U CN201611810U CN2009203534700U CN200920353470U CN201611810U CN 201611810 U CN201611810 U CN 201611810U CN 2009203534700 U CN2009203534700 U CN 2009203534700U CN 200920353470 U CN200920353470 U CN 200920353470U CN 201611810 U CN201611810 U CN 201611810U
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Abstract
The utility model embodiment provides a device for controlling the stator winding connection of a rare earth permanent-magnet motor. The device changes the effective turn of the stator winding of the rare earth permanent-magnet motor by controlling manually or automatically the connection method of the leading-out terminal on the stator winding of the rare earth permanent-magnet motor, so as to achieve the induced potential matched with supply voltage and improve the power factor of the rare earth permanent-magnet motor.
Description
Technical field
The utility model relates to the motor technology field, particularly a kind of device of controlling the connection of rare-earth permanent magnet motor stator winding.
Background technology
On the oil field, the length of supply line generally can reach about 10 kilometers, have in addition reach 20 to 30 kilometers.Supply line is long more, and the pressure drop that produces in supply line is big more.A large amount of actual measurements show that the head end supply voltage of supply line often reaches 400V-420V, and the supply voltage of supply line's end will be reduced to 350V-360V.This shows that its head end voltage and terminal voltage differ more during supply line head.Like this, the supply voltage that is operated in the rare-earth permanent magnet motor of supply line's end will be lower than its rated voltage.
When rare-earth permanent magnet motor equaled supply voltage at its induced potential, power factor was very high.But when supply voltage departed from mutually with induced potential, because supply voltage and induced potential do not match, its power factor will obviously descend.
For example load is 20% of a rated power, and when supply voltage equaled rated voltage, the power factor of rare-earth permanent magnet motor can reach more than 0.97.But when supply voltage departs from rated voltage ± 5%, the power factor of rare-earth permanent magnet motor will drop to 0.5-0.7.
The utility model content
The technical problems to be solved in the utility model provides a kind of device that the rare-earth permanent magnet motor stator winding connects of controlling, can be by the connected mode of the different leading-out terminals of control rare-earth permanent magnet motor, for rare-earth permanent-magnet electric machine provides different induced potentials, make rare-earth permanent magnet motor when various supply voltage, keep higher power factor.
The device that the utility model embodiment provides a kind of stator winding of controlling rare-earth permanent magnet motor to connect, be applied on the threephase stator winding of symmetry, has a tap between the head and the tail leading-out terminal of every phase stator winding, the head end leading-out terminal of every phase stator winding connects power supply, and comprising: first contactor, second contactor, manual first are often driven button, manual second and often driven button, the manual first normally closed button and the manual second normally closed button:
Described first contactor comprises first contactor coil, first normally opened contact, second normally opened contact, the 3rd normally opened contact, the 4th normally opened contact and the first contactor normally-closed contact; Wherein, first normally opened contact, second normally opened contact and the 3rd normally opened contact are connected between the tail end and neutral point of threephase stator winding, when first normally opened contact, second normally opened contact and the 3rd normally opened contact were closed, the tail end of threephase stator winding connected neutral point;
Described second contactor comprises that second contactor coil, 5 constant virtues opens contact, the 6th normally opened contact, the 7th normally opened contact, the 8th normally opened contact and the second contactor normally-closed contact; Wherein, 5 constant virtues is opened contact, the 6th normally opened contact and the 7th normally opened contact and is connected between the tap and neutral point of threephase stator winding, when contact, the 6th normally opened contact and the 7th normally opened contact closure were opened in 5 constant virtues, the tap of threephase stator winding connected neutral point;
The described manual first normally closed button, manual first is often driven button, first contactor coil, the second contactor normally-closed contact and is followed in series to form first branch road; Described the 4th normally opened contact is connected in parallel on described manual first two ends of often driving button;
The described manual second normally closed button, manual second is often driven button, second contactor coil, the first contactor normally-closed contact and is followed in series to form second branch road; Described the 8th normally opened contact is connected in parallel on described manual second two ends of often driving button.
Preferably, this device also comprises:
The automatic first normally closed button, automatic first is often driven button, the automatic second normally closed button and automatic second is often driven button;
The described automatic first normally closed button is connected with the described manual first normally closed button, and described automatic first often opens the two ends that button is connected in parallel on described the 4th normally opened contact;
The described automatic second normally closed button is connected with the described manual second normally closed button, and described automatic second often opens the two ends that button is connected in parallel on described the 8th normally opened contact.
Preferably, this device also comprises: monitor terminal, described monitor terminal comprise monitor terminal CPU, monitor terminal detecting unit, monitor terminal driver element;
Described monitor terminal detecting unit is sent to described monitor terminal CPU with the supply voltage of the rare-earth permanent magnet motor of detection;
Described monitor terminal CPU judges when described supply voltage is positioned at the first predetermined interval, sends first command signal to described monitor terminal driver element; Described monitor terminal drive unit drives described automatic second is often driven button and is disconnected, and described automatic first often opens the button closure;
Described monitor terminal CPU judges when described supply voltage is positioned at the second predetermined interval, sends second command signal to described monitor terminal driver element; Described monitor terminal drive unit drives described automatic first is often driven button and is disconnected, and described automatic second often opens the button closure.
Preferably, this device also comprises: Surveillance center and monitor terminal communication unit; Described Surveillance center sends order by described monitor terminal communication unit to described monitor terminal CPU, described monitor terminal CPU analyzes the priority of described order and monitor terminal detecting unit, sends described first command signal or second command signal according to the order of high priority to described monitor terminal driver element.
Preferably, this device also comprises: described monitor terminal also comprises display unit.
The device that the utility model embodiment also provides a kind of stator winding of controlling rare-earth permanent magnet motor to connect, be applied on the threephase stator winding of symmetry, has a tap between the head and the tail leading-out terminal of every phase stator winding, the head end leading-out terminal of every phase stator winding connects power supply, and comprising: first contactor, second contactor, automatic first are often driven button, automatic second and often driven button, the automatic first normally closed button and the automatic second normally closed button;
Described first contactor comprises first contactor coil, first normally opened contact, second normally opened contact, the 3rd normally opened contact, the 4th normally opened contact and the first contactor normally-closed contact; Wherein, first normally opened contact, second normally opened contact and the 3rd normally opened contact are connected between the tail end and neutral point of threephase stator winding, when first normally opened contact, second normally opened contact and the 3rd normally opened contact were closed, the tail end of threephase stator winding connected neutral point;
Described second contactor comprises that second contactor coil, 5 constant virtues opens contact, the 6th normally opened contact, the 7th normally opened contact, the 8th normally opened contact and the second contactor normally-closed contact; Wherein, 5 constant virtues is opened contact, the 6th normally opened contact and the 7th normally opened contact and is connected between the tap and neutral point of threephase stator winding, when contact, the 6th normally opened contact and the 7th normally opened contact closure were opened in 5 constant virtues, the tap of threephase stator winding connected neutral point;
The described automatic first normally closed button, automatic first is often driven button, first contactor coil, the second contactor normally-closed contact and is followed in series to form first branch road; Described the 4th normally opened contact is connected in parallel on described automatic first two ends of often driving button;
The described automatic second normally closed button, automatic second is often driven button, second contactor coil, the first contactor normally-closed contact and is followed in series to form second branch road; Described the 8th normally opened contact is connected in parallel on described automatic second two ends of often driving button.
Preferably, this device also comprises: monitor terminal, described monitor terminal comprise monitor terminal CPU, monitor terminal detecting unit, monitor terminal driver element;
Described monitor terminal detecting unit is sent to described monitor terminal CPU with the supply voltage of the rare-earth permanent magnet motor of detection;
Described monitor terminal CPU judges when described supply voltage is positioned at the first predetermined interval, sends first command signal to described monitor terminal driver element; Described monitor terminal drive unit drives described automatic second is often driven button and is disconnected, and described automatic first often opens the button closure;
Described monitor terminal CPU judges when described supply voltage is positioned at the second predetermined interval, sends second command signal to described monitor terminal driver element; Described monitor terminal drive unit drives described automatic first is often driven button and is disconnected, and described automatic second often opens the button closure.
Preferably, this device also comprises: Surveillance center and monitor terminal communication unit; Described Surveillance center sends order by described monitor terminal communication unit to described monitor terminal CPU, described monitor terminal CPU analyzes the priority of described order and monitor terminal detecting unit, sends described first command signal or second command signal according to the order of high priority to described monitor terminal driver element.
Compared with prior art, the utlity model has following advantage: the device that the stator winding by the control rare-earth permanent magnet motor connects, make when supply voltage departs from rare-earth permanent magnet motor, can change the effective turn of the stator winding of rare-earth permanent-magnet electric machine by the connected mode that changes the stator winding leading-out terminal, make it obtain the induced potential that is complementary with supply voltage; Improved the power factor of rare-earth permanent magnet motor.
Description of drawings
Fig. 1 is the structural representation of a kind of rare-earth permanent magnet motor stator winding of providing of the utility model;
Fig. 2 is the structural representation of the device that connects of a kind of manual control rare-earth permanent magnet motor stator winding that the utility model provides;
Fig. 3 is the structural representation of the device that connects of another kind control rare-earth permanent magnet motor stator winding that the utility model provides;
Fig. 4 is the structural representation of the device that connects of a kind of automatic control rare-earth permanent magnet motor stator winding that the utility model provides;
Fig. 5 is the structural representation of the device that connects of another control rare-earth permanent magnet motor stator winding that the utility model provides;
Fig. 6 is the device schematic diagram of a kind of automatic control button of providing of the utility model
Fig. 7 is a kind of monitor terminal structure of driving unit schematic diagram that the utility model provides.
Embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.
Referring to shown in Figure 1, a kind of stator winding structure schematic diagram for rare-earth permanent magnet motor provided by the utility model, this rare-earth permanent magnet motor comprises the threephase stator winding of symmetry, has a tap, the X1 in the corresponding diagram, Y1 and Z1 between the head and the tail leading-out terminal of every phase stator winding; Wherein head end A, the B of threephase stator winding and C are connected respectively on the power supply, and tail end is respectively X2, Y2 and Z2.Further, can have a plurality of taps between the head and the tail leading-out terminal of every phase stator winding, the utility model embodiment is that example describes with a tap.
Embodiment one:
Referring to shown in Figure 2, be the schematic diagram of control rare-earth permanent magnet motor stator winding connector provided by the utility model.
Need to prove that the device that stator winding in the present embodiment connects is by the connection of controlling stator winding manually.
This device comprises: first contactor, second contactor, manual first are often opened button KA12, manual second and are often opened button KA22, the manual first normally closed button KA11 and the manual second normally closed button KA21;
Described first contactor comprises the first contactor coil KM1, the first normally opened contact KM11, the second normally opened contact KM12, the 3rd normally opened contact KM13, the 4th normally opened contact KM14 and the first contactor normally-closed contact KM15; Wherein, the first normally opened contact KM11, the second normally opened contact KM12 and the 3rd normally opened contact KM13 are connected to tail end X2, Y2 and the Z2 of threephase stator winding, when the first normally opened contact KM11, the second normally opened contact KM12 and the 3rd normally opened contact KM13 were closed, tail end X2, Y2 and the Z2 of threephase stator winding were connected to neutral point;
Described second contactor comprises that the second contactor coil KM2,5 constant virtues opens contact KM21, the 6th normally opened contact KM22, the 7th normally opened contact KM23, the 8th normally opened contact KM24 and the second contactor normally-closed contact KM25; Wherein, tap X1, Y1 and the Z1 that contact KM21, the 6th normally opened contact KM22 and the 7th normally opened contact KM23 are connected to the threephase stator winding opened in 5 constant virtues, when contact KM21, the 6th normally opened contact KM22 and the 7th normally opened contact KM23 closure were opened in 5 constant virtues, tap X1, Y1 and the Z1 of threephase stator winding were connected to neutral point;
The described manual first normally closed button KA11, manual first often opens button KA12, the first contactor coil KM1, the second contactor normally-closed contact KM25 is followed in series to form first branch road; Described the 4th normally opened contact KM14 is connected in parallel on described manual first two ends of often opening button KM12;
The described manual second normally closed button KA21, manual second often opens button KA22, the second contactor coil KA2, the first contactor normally-closed contact KA15 is followed in series to form second branch road; Described the 8th normally opened contact KA24 in parallel is at described manual second two ends of often opening button KA22.
In addition, can also be in series with fuse FU1 and FU2 respectively on described first branch road and second branch road, when electric current was excessive, fuse disconnected, and plays the effect of protective circuit.
The method of operation and the realization principle of this control rare-earth permanent magnet motor stator winding connector are as follows: manual control button KA12 closure, then first contactor coil KM1 energising, the pairing first normally opened contact KM11 of described coil KM1, the second normally opened contact KM12 and the 3rd normally opened contact KM13 and the 4th normally opened contact KM14 closure, the first contactor normally-closed contact KM15 disconnects simultaneously, when manual first often opens button KM12 disconnection, because the 4th normally opened contact KM14 is in closure state, so the first contactor coil KM1 still is in "on" position, so the first normally opened contact KM11 of described coil KM1 correspondence, the second normally opened contact KM12 and the 3rd normally opened contact KM13 still are in closure state; This moment, tail end X2, Y2 and the Z2 of threephase stator winding were connected to neutral point, and the whole numbers of turn on the every phase stator winding of rare-earth permanent magnet motor from the head end to the tail end all are effective turn, can provide specified induced potential for rare-earth permanent magnet motor.
When need are adjusted the induced potential of rare-earth permanent magnet motor according to supply voltage, can disconnect first contactor, manual control button KA11 disconnects, first contactor coil KM1 outage this moment, the pairing first normally opened contact KM11 of this coil, the second normally opened contact KM12, the 3rd normally opened contact KM13 and the 4th normally opened contact KM14 disconnect, the while first contactor normally-closed contact KM15 closure, this moment, tail end X2, Y2 and the Z2 of threephase stator winding were not connected to neutral point.
In the time the tap of rare-earth permanent magnet motor need being connected to neutral end, manual control button KA22 closure, then second contactor coil KM2 energising, the described second contactor coil KM2 opens contact KM21 in pairing 5 constant virtues, the 6th normally opened contact KM22 and the 7th normally opened contact KM23 and the 8th normally opened contact KM24 closure, the second contactor normally-closed contact KM25 disconnects simultaneously, when manual second often opens button KM22 disconnection, because the 8th normally opened contact KM24 is in closure state, so the second contactor coil KM2 still is in "on" position, so contact KM21 is opened in 5 constant virtues of described coil KM2 correspondence, the 6th normally opened contact KM22 and the 7th normally opened contact KM23 still are in closure state; This moment, tail end X1, Y1 and the Z1 of threephase stator winding were connected to neutral point, and the number of turn on the every phase stator winding of rare-earth permanent magnet motor from the head end to the tap is an effective turn, can provide the induced potential that is different from rated voltage for rare-earth permanent magnet motor.
When need are adjusted the induced potential of rare-earth permanent magnet motor according to supply voltage, can disconnect second contactor, manual control button KA21 disconnects, second contactor coil KM2 outage this moment, the pairing 5 constant virtues of this coil is opened contact KM21, the 6th normally opened contact KM22, the 7th normally opened contact KM23 and the 8th normally opened contact KM24 and is disconnected, the while second contactor normally-closed contact KM25 closure, this moment, tap X1, Y1 and the Z1 of threephase stator winding were not connected to neutral point.
The device that the stator winding of the control rare-earth permanent magnet motor that present embodiment provided connects, make when supply voltage departs from rare-earth permanent magnet motor, can change the effective turn of rare-earth permanent-magnet electric machine by the connected mode that changes the stator winding leading-out terminal, make it obtain the induced potential that is complementary with supply voltage; Improved the power factor of rare-earth permanent magnet motor.
Embodiment two:
The device that embodiment one provides is by changing the connection of stator winding manually, and embodiment two and the difference of embodiment one are to increase automatic remote to control and change being connected of stator winding.Device in the present embodiment both can also can change the connection of stator winding by Long-distance Control automatically by manually changing the connection of stator winding.
The device that connects referring to the stator winding of control rare-earth permanent magnet motor shown in Figure 3, the device that the stator winding of the control rare-earth permanent magnet motor that is provided with respect to embodiment two connects, the device that present embodiment provided also comprises:
The automatic first normally closed button SB11, automatic first often opens button SB12, the automatic second normally closed button SB21 and automatic second often opens button SB22;
The described automatic first normally closed button SB11 connects with the described manual first normally closed button KA11, and described automatic first often opens the two ends that button SB12 is connected in parallel on described the 4th normally opened contact KM14;
The described automatic second normally closed button SB21 connects with the described manual second normally closed button KA21, and described automatic second often opens the two ends that button SB22 is connected in parallel on described the 8th normally opened contact KM24.
The method of operation of the connection of the manual control of this device stator winding is a kind of identical with embodiment with the realization principle, repeats no more herein.
The method of operation and the realization principle of the connection of this device automatic remote control break stator winding are as follows: according to detected supply voltage, automatic first often opens button SB12 closure, then first contactor coil KM1 energising, the pairing first normally opened contact KM11 of the described first contactor coil KM1, the second normally opened contact KM12 and the 3rd normally opened contact KM13 and the 4th normally opened contact KM14 closure, the first contactor normally-closed contact KM15 disconnects simultaneously, when automatic first often opens button SB12 disconnection, because the 4th normally opened contact KM14 is in closure state, so the first contactor coil KM1 still is in "on" position, so the first normally opened contact KM11 of the described first contactor coil KM1 correspondence, the second normally opened contact KM12 and the 3rd normally opened contact KM13 still are in closure state; This moment, tail end X2, Y2 and the Z2 of threephase stator winding were connected to neutral point, and the whole numbers of turn on the every phase stator winding of rare-earth permanent magnet motor from the head end to the tail end all are effective turn, can provide specified induced potential for rare-earth permanent magnet motor.
When need are adjusted the induced potential of rare-earth permanent magnet motor according to supply voltage, can disconnect first contactor, automatic first often opens button SB11 disconnects, first contactor coil KM1 outage this moment, the pairing first normally opened contact KM11 of this coil, the second normally opened contact KM12, the 3rd normally opened contact KM13 and the 4th normally opened contact KM14 disconnect, the while first contactor normally-closed contact KM15 closure, this moment, tail end X2, Y2 and the Z2 of threephase stator winding were not connected to neutral point.
In the time the tap of rare-earth permanent magnet motor need being connected to neutral end, automatic second often opens button SB22 closure, then second contactor coil KM2 energising, the described second contactor coil KM2 opens contact KM21 in pairing 5 constant virtues, the 6th normally opened contact KM22 and the 7th normally opened contact KM23 and the 8th normally opened contact KM24 closure, the second contactor normally-closed contact KM25 disconnects simultaneously, when automatic second often opens button SB22 disconnection, because the 8th normally opened contact KM24 is in closure state, so the second contactor coil KM2 still is in "on" position, so contact KM21 is opened in 5 constant virtues of described coil KM2 correspondence, the 6th normally opened contact KM22 and the 7th normally opened contact KM23 still are in closure state; This moment, tail end X1, Y1 and the Z1 of threephase stator winding were connected to neutral point, and the number of turn on the every phase stator winding of rare-earth permanent magnet motor from the head end to the tap is an effective turn, can provide the induced potential that is different from rated voltage for rare-earth permanent magnet motor.
When need are adjusted the induced potential of rare-earth permanent magnet motor according to supply voltage, can disconnect second contactor, the automatic second normally closed button SB21 disconnects, second contactor coil KM2 outage this moment, the pairing 5 constant virtues of this coil is opened contact KM21, the 6th normally opened contact KM22, the 7th normally opened contact KM23 and the 8th normally opened contact KM24 and is disconnected, the while second contactor normally-closed contact KM25 closure, this moment, tap X1, Y1 and the Z1 of threephase stator winding were not connected to neutral point.
The device that the stator winding of the control rare-earth permanent magnet motor that present embodiment provides connects, compare and embodiment one, on every branch road, increase by one and often driven button and an automatic normally closed button automatically, control the connection that these two buttons just can realize changing stator winding by remote auto, thereby adjust the induced voltage of rare-earth permanent magnet motor.
Embodiment three:
The device that present embodiment provides a kind of stator winding of control break rare-earth permanent magnet motor automatically to connect, referring to shown in Figure 4, comprising: first contactor, second contactor, automatic first are often opened button SB12, automatic second and are often opened button SB22, the automatic first normally closed button SB11 and the automatic second normally closed button SB21.
Wherein said first contactor is identical with second contactor with a kind of first contactor of mentioning of embodiment with second contactor, repeats no more herein.
The described automatic first normally closed button SB11, automatic first often opens button SB12, the first contactor coil KM1, the second contactor normally-closed contact KM25 is followed in series to form first branch road; Described the 4th normally opened contact KM14 in parallel is at described automatic first two ends of often opening button SB12;
The described automatic second normally closed button SB21, automatic second often opens button SB22, the second contactor coil KM2, the first contactor normally-closed contact KM15 is followed in series to form second branch road; Described the 8th normally opened contact KM25 in parallel is at described automatic second two ends of often opening button SB22.
The method of operation and the realization principle of this control rare-earth permanent magnet motor stator winding connector are as follows: according to detected supply voltage, automatic first often opens button SB12 closure, then first contactor coil KM1 energising, the pairing first normally opened contact KM11 of the described first contactor coil KM1, the second normally opened contact KM12 and the 3rd normally opened contact KM13 and the 4th normally opened contact KM14 closure, the first contactor normally-closed contact KM15 disconnects simultaneously, when automatic first often opens button SB12 disconnection, because the 4th normally opened contact KM14 is in closure state, so the first contactor coil KM1 still is in "on" position, so the first normally opened contact KM11 of described coil KM1 correspondence, the second normally opened contact KM12 and the 3rd normally opened contact KM13 still are in closure state; This moment, tail end X2, Y2 and the Z2 of threephase stator winding were connected to neutral point, and the whole numbers of turn on the every phase stator winding of rare-earth permanent magnet motor from the head end to the tail end all are effective turn, can provide specified induced potential for rare-earth permanent magnet motor.
When need are adjusted the induced potential of rare-earth permanent magnet motor according to supply voltage, can disconnect first contactor, the automatic first normally closed button SB11 disconnects, first contactor coil KM1 outage this moment, the pairing first normally opened contact KM11 of this coil, the second normally opened contact KM12, the 3rd normally opened contact KM13 and the 4th normally opened contact KM14 disconnect, the while first contactor normally-closed contact KM15 closure, this moment, tail end X2, Y2 and the Z2 of threephase stator winding were not connected to neutral point.
In the time the tap of rare-earth permanent magnet motor need being connected to neutral end, automatic second often opens button SB22 closure, then second contactor coil KM2 energising, the described second contactor coil KM2 opens contact KM21 in pairing 5 constant virtues, the 6th normally opened contact KM22 and the 7th normally opened contact KM23 and the 8th normally opened contact KM24 closure, the second contactor normally-closed contact KM25 disconnects simultaneously, when automatic second often opens button SB22 disconnection, because the 8th normally opened contact KM24 is in closure state, so the second contactor coil KM2 still is in "on" position, so contact KM21 is opened in 5 constant virtues of the described second contactor coil KM2 correspondence, the 6th normally opened contact KM22 and the 7th normally opened contact KM23 still are in closure state; This moment, tail end X1, Y1 and the Z1 of threephase stator winding were connected to neutral point, and the number of turn on the every phase stator winding of rare-earth permanent magnet motor from the head end to the tap is an effective turn, can provide the induced potential that is different from rated voltage for rare-earth permanent magnet motor.
When need are adjusted the induced potential of rare-earth permanent magnet motor according to supply voltage, can disconnect second contactor, the automatic second normally closed button SB21 disconnects, second contactor coil KM2 outage this moment, the pairing 5 constant virtues of this coil is opened contact KM21, the 6th normally opened contact KM22, the 7th normally opened contact KM23 and the 8th normally opened contact KM24 and is disconnected, the while second contactor normally-closed contact KM25 closure, this moment, tap X1, Y1 and the Z1 of threephase stator winding were not connected to neutral point.
The device that the stator winding of the control rare-earth permanent magnet motor that present embodiment provides connects, make when supply voltage departs from rare-earth permanent magnet motor, can change the effective turn of rare-earth permanent-magnet electric machine automatically by the connected mode that changes the stator winding leading-out terminal, make it obtain the induced potential that is complementary with supply voltage, improved the power factor of rare-earth permanent magnet motor.
When having a plurality of tap between the stator winding of rare-earth permanent magnet motor, the device that described control rare-earth permanent magnet motor stator winding connects can comprise that a plurality of contactors realize many grades of pressure regulation to rare-earth permanent magnet motor, as shown in Figure 5, the device that connects for control rare-earth permanent magnet motor stator winding with fourth gear voltage regulation function, this device is applicable to the rare-earth permanent magnet motor that has three taps between the head end of stator winding and the tail end, this device comprises that four contactors are respectively: KM1, KM2, KM3 and KM4, this device comprises the branch road of four parallel connections, include manual control button and automatic control button on every the road, and the normally-closed contact of other contactors of connecting, it is interlocking between the contactor, promptly when one of them contactor energising, other contactors disconnect, can change the connected mode of rare-earth permanent-magnet electric machine neutral point according to supply voltage by the manual or automatic button on the control branch road, thereby change the connected mode of stator winding, make the rare-earth permanent magnet motor not induced voltage of difference of attaining the Way, improve its power factor.
Automatic control button in corresponding the foregoing description, referring to shown in Figure 6, for come the device composition diagram of automatic control button according to supply voltage, as shown in the figure, the device that described control rare-earth permanent magnet motor stator winding connects also comprises:
Monitor terminal, described monitor terminal comprise monitor terminal CPU61, monitor terminal detecting unit 62, monitor terminal driver element 63;
Described monitor terminal detecting unit 62 is sent to described monitor terminal CPU61 with the supply voltage of the rare-earth permanent magnet motor of detection;
Described monitor terminal CPU61 judges when described supply voltage is positioned at the first predetermined interval, sends first command signal to described monitor terminal driver element; Described monitor terminal drive unit drives described automatic second is often driven button and is disconnected, and described automatic first often opens the button closure;
Described monitor terminal CPU61 judges when described supply voltage is positioned at the second predetermined interval, to described monitor terminal driver element 63 transmissions second command signal; Described monitor terminal driver element 63 drives described automatic first and often opens the button disconnection, and described automatic second often opens the button closure.
This device also comprises: Surveillance center 60 and monitor terminal communication unit 64; Described Surveillance center 60 sends order by described monitor terminal communication unit to described monitor terminal CPU61, described monitor terminal CPU61 analyzes the priority of described order and monitor terminal detecting unit 62, sends described first command signal or second command signal according to the order of high priority to described monitor terminal driver element.
Described monitor terminal also comprises display unit 65, the instruction that described display unit 65 receives and display monitoring terminal CPU sends, if default control mode is that manually then alert is changed the connected mode of rare-earth permanent magnet motor stator winding neutral point by the manual operation button.
Referring to shown in Figure 7, control the circuit diagram of the closed and disconnected of described automatic button automatically for described monitor terminal driver element
Described monitoring driver element can be high-power optocoupler, described monitor terminal CPU sends described command signal to high-power optocoupler, after the input of high-power light idol obtains command signal, realize disconnection and closed procedure to automatic control button according to described command signal.
For the control that has Fig. 2 of 2 kinds of connected modes at neutral point, need four automatic control button: SB11, SB12, SB21 and SB22 altogether, respectively first branch road and second branch road are provided the function of automatic disconnection and closed first contactor and second contactor.So, by automatic control circuit shown in Figure 5 and drive unit, just can change the connected mode of rare-earth permanent magnet motor stator winding neutral point, promptly realize the automatic switchover of winding connection.
The device that the stator winding of the control rare-earth permanent magnet motor that the utility model embodiment provides connects, when supply voltage departs from rare-earth permanent magnet motor, can change the effective turn of rare-earth permanent-magnet electric machine by the connected mode that changes the stator winding leading-out terminal, make it obtain the induced potential that is complementary with supply voltage, improved the power factor of rare-earth permanent magnet motor.
The above only is preferred embodiment of the present utility model, is not the utility model is done any pro forma restriction.Though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model.Any those of ordinary skill in the art, do not breaking away under the technical solutions of the utility model scope situation, all can utilize the method and the technology contents of above-mentioned announcement that technical solutions of the utility model are made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solutions of the utility model, all still belongs in the scope of technical solutions of the utility model protection any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present utility model.
Claims (8)
1. device that the stator winding of controlling rare-earth permanent magnet motor connects, it is characterized in that, be applied on the threephase stator winding of symmetry, has a tap between the head and the tail leading-out terminal of every phase stator winding, the head end leading-out terminal of every phase stator winding connects power supply, and comprising: first contactor, second contactor, manual first are often driven button, manual second and often driven button, the manual first normally closed button and the manual second normally closed button;
Described first contactor comprises first contactor coil, first normally opened contact, second normally opened contact, the 3rd normally opened contact, the 4th normally opened contact and the first contactor normally-closed contact; Wherein, first normally opened contact, second normally opened contact and the 3rd normally opened contact are connected between the tail end and neutral point of threephase stator winding, when first normally opened contact, second normally opened contact and the 3rd normally opened contact were closed, the tail end of threephase stator winding connected neutral point;
Described second contactor comprises that second contactor coil, 5 constant virtues opens contact, the 6th normally opened contact, the 7th normally opened contact, the 8th normally opened contact and the second contactor normally-closed contact; Wherein, 5 constant virtues is opened contact, the 6th normally opened contact and the 7th normally opened contact and is connected between the tap and neutral point of threephase stator winding, when contact, the 6th normally opened contact and the 7th normally opened contact closure were opened in 5 constant virtues, the tap of threephase stator winding connected neutral point;
The described manual first normally closed button, manual first is often driven button, first contactor coil, the second contactor normally-closed contact and is followed in series to form first branch road; Described the 4th normally opened contact is connected in parallel on described manual first two ends of often driving button;
The described manual second normally closed button, manual second is often driven button, second contactor coil, the first contactor normally-closed contact and is followed in series to form second branch road; Described the 8th normally opened contact is connected in parallel on described manual second two ends of often driving button.
2. the device that the stator winding of control rare-earth permanent magnet motor according to claim 1 connects is characterized in that this device also comprises:
The automatic first normally closed button, automatic first is often driven button, the automatic second normally closed button and automatic second is often driven button;
The described automatic first normally closed button is connected with the described manual first normally closed button, and described automatic first often opens the two ends that button is connected in parallel on described the 4th normally opened contact;
The described automatic second normally closed button is connected with the described manual second normally closed button, and described automatic second often opens the two ends that button is connected in parallel on described the 8th normally opened contact.
3. the device that the stator winding of control rare-earth permanent magnet motor according to claim 2 connects, it is characterized in that this device also comprises: monitor terminal, described monitor terminal comprise monitor terminal CPU, monitor terminal detecting unit, monitor terminal driver element;
Described monitor terminal detecting unit is sent to described monitor terminal CPU with the supply voltage of the rare-earth permanent magnet motor of detection; Described monitor terminal CPU judges when described supply voltage is positioned at the first predetermined interval, sends first command signal to described monitor terminal driver element; Described monitor terminal drive unit drives described automatic second is often driven button and is disconnected, and described automatic first often opens the button closure;
Described monitor terminal CPU judges when described supply voltage is positioned at the second predetermined interval, sends second command signal to described monitor terminal driver element; Described monitor terminal drive unit drives described automatic first is often driven button and is disconnected, and described automatic second often opens the button closure.
4. the device that the stator winding of control rare-earth permanent magnet motor according to claim 3 connects is characterized in that this device also comprises: Surveillance center and monitor terminal communication unit; Described Surveillance center sends order by described monitor terminal communication unit to described monitor terminal CPU, described monitor terminal CPU analyzes the priority of described order and monitor terminal detecting unit, sends described first command signal or second command signal according to the order of high priority to described monitor terminal driver element.
5. the device that the stator winding of control rare-earth permanent magnet motor according to claim 4 connects, it is characterized in that this device also comprises: described monitor terminal also comprises display unit.
6. device that the stator winding of controlling rare-earth permanent magnet motor connects, it is characterized in that, be applied on the threephase stator winding of symmetry, has a tap between the head and the tail leading-out terminal of every phase stator winding, the head end leading-out terminal of every phase stator winding connects power supply, and comprising: first contactor, second contactor, automatic first are often driven button, automatic second and often driven button, the automatic first normally closed button and the automatic second normally closed button;
Described first contactor comprises first contactor coil, first normally opened contact, second normally opened contact, the 3rd normally opened contact, the 4th normally opened contact and the first contactor normally-closed contact; Wherein, first normally opened contact, second normally opened contact and the 3rd normally opened contact are connected between the tail end and neutral point of threephase stator winding, when first normally opened contact, second normally opened contact and the 3rd normally opened contact were closed, the tail end of threephase stator winding connected neutral point;
Described second contactor comprises that second contactor coil, 5 constant virtues opens contact, the 6th normally opened contact, the 7th normally opened contact, the 8th normally opened contact and the second contactor normally-closed contact; Wherein, 5 constant virtues is opened contact, the 6th normally opened contact and the 7th normally opened contact and is connected between the tap and neutral point of threephase stator winding, when contact, the 6th normally opened contact and the 7th normally opened contact closure were opened in 5 constant virtues, the tap of threephase stator winding connected neutral point;
The described automatic first normally closed button, automatic first is often driven button, first contactor coil, the second contactor normally-closed contact and is followed in series to form first branch road; Described the 4th normally opened contact is connected in parallel on described automatic first two ends of often driving button;
The described automatic second normally closed button, automatic second is often driven button, second contactor coil, the first contactor normally-closed contact and is followed in series to form second branch road; Described the 8th normally opened contact is connected in parallel on described automatic second two ends of often driving button.
7. the device that the stator winding of control rare-earth permanent magnet motor according to claim 6 connects, it is characterized in that this device also comprises: monitor terminal, described monitor terminal comprise monitor terminal CPU, monitor terminal detecting unit, monitor terminal driver element;
Described monitor terminal detecting unit is sent to described monitor terminal CPU with the supply voltage of the rare-earth permanent magnet motor of detection;
Described monitor terminal CPU judges when described supply voltage is positioned at the first predetermined interval, sends first command signal to described monitor terminal driver element; Described monitor terminal drive unit drives described automatic second is often driven button and is disconnected, and described automatic first often opens the button closure;
Described monitor terminal CPU judges when described supply voltage is positioned at the second predetermined interval, sends second command signal to described monitor terminal driver element; Described monitor terminal drive unit drives described automatic first is often driven button and is disconnected, and described automatic second often opens the button closure.
8. the device that the stator winding of control rare-earth permanent magnet motor according to claim 7 connects is characterized in that this device also comprises: Surveillance center and monitor terminal communication unit; Described Surveillance center sends order by described monitor terminal communication unit to described monitor terminal CPU, described monitor terminal CPU analyzes the priority of described order and monitor terminal detecting unit, sends described first command signal or second command signal according to the order of high priority to described monitor terminal driver element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203534700U CN201611810U (en) | 2009-12-31 | 2009-12-31 | Device for controlling stator winding connection of rare earth permanent-magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203534700U CN201611810U (en) | 2009-12-31 | 2009-12-31 | Device for controlling stator winding connection of rare earth permanent-magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201611810U true CN201611810U (en) | 2010-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203534700U Expired - Fee Related CN201611810U (en) | 2009-12-31 | 2009-12-31 | Device for controlling stator winding connection of rare earth permanent-magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201611810U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655969A (en) * | 2016-12-01 | 2017-05-10 | 日照正泽自动化科技有限公司 | Automatic on-load non-inrush switching device and method of rare-earth synchronous motor |
| CN112931978A (en) * | 2021-03-11 | 2021-06-11 | 昆明理工大学 | Electromagnetic induction heating non-combustion smoking set |
-
2009
- 2009-12-31 CN CN2009203534700U patent/CN201611810U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655969A (en) * | 2016-12-01 | 2017-05-10 | 日照正泽自动化科技有限公司 | Automatic on-load non-inrush switching device and method of rare-earth synchronous motor |
| CN106655969B (en) * | 2016-12-01 | 2019-05-28 | 日照正泽自动化科技有限公司 | A kind of rare earth synchronous motor has automatically carries no-flashy-flow switching device and method |
| CN112931978A (en) * | 2021-03-11 | 2021-06-11 | 昆明理工大学 | Electromagnetic induction heating non-combustion smoking set |
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