Triangle-connection three-phase alternating-current motor and three-phase electric reactor dual-purpose winding
A three-phase reactor and three-phase AC technology, which is applied in the direction of AC motor control, electric components, and the shape/style/structure of winding conductors, can solve the problems of increasing equipment weight, space occupation, resource waste, etc., and avoid equipment The effect of wasting resources
Inactive Publication Date: 2016-07-20
ANJILI ELECTRIC CONTROL TECH NANJING CO LTD
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Problems solved by technology
This not only wastes resources but also increases equipment weight and space occupation
Method used
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[0025] image 3 On the one hand, it describes the design principle of the present invention, and at the same time, it can be used as an embodiment of realizing the functions of each single-pole double-throw switch by using a mechanical switch or an electromagnetic relay.
[0026] image 3 , when the switches S1-S5 are thrown into the counterclockwise switch position at the same time, the circuit is as follows Figure 4 As shown, the circuit is completely equivalent to figure 1 In the original motor winding, the circuit connection at this time is obviously a three-phase AC motor. When the switches S1-S5 are thrown into the clockwise switch position at the same time, the circuit connection is as follows Figure 5 shown. Compare Figure 5 and figure 2 It can be seen that the two circuits are completely equivalent, so the circuit connection at this time is a three-phase reactor, and the inductance value of each phase coil is equal to L.
[0027] image 3 S1-S5 in can also...
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The invention discloses a triangle-connection three-phase alternating-current motor and three-phase electric reactor dual-purpose winding. The dual-purpose winding comprises three-phase stator winding coils, an affiliated switching circuit and two groups of three-phase external terminals and is characterized in that each phase of the winding, which is positioned in a stator slot, comprises two parts of coils with the same turns, slot positions and winding manners, and the two parts of coils are connected by an affiliated switch. According to the triangle-connection three-phase alternating-current motor and three-phase electric reactor dual-purpose winding, after the affiliated switches are operated simply, connection between coils and connection between a coil and a terminal are changed, the winding in one switching state is equal to a triangle-connection three-phase alternating-current motor winding, and the winding in the other switching state is equivalent to a three-phase electric reactor winding, so that an effect that one device has dual purposes is realized. In certain types of plug-in electric vehicles and grid-connected distributed power generators, an alternating-current motor and an electric reactor need to be provided, but not to be used simultaneously; therefore, due to the arrangement of the device with the dual purposes, resource wasting is avoided, the weight and floor space of the device are reduced, and the utilization rate of the device is improved.
Description
technical field [0001] The invention relates to a dual-purpose coil winding circuit, which enables a triangular-connected three-phase AC motor equipped with the winding to realize the function of a three-phase reactor after being switched by a simple reversible switch. Background technique [0002] Such as figure 1 As shown, the stator windings of a traditional three-phase AC motor can be connected in a delta connection, referred to as a delta connection, that is, the three-phase coil windings are connected end to end in sequence to form a triangle. The three endpoints of the triangle are connected with the external terminals U, V, W to connect an external three-phase symmetrical power supply. When the external power supply provides three-phase symmetrical sinusoidal AC voltage, the stator coil generates a rotating magnetic field, and the electromagnetic torque generated after interacting with the rotor magnetic field causes the motor rotor to rotate. When the rotor has no...
Claims
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IPC IPC(8): H02K3/12H02K3/28H02K11/00H02P25/18
Inventor 戴民
Owner ANJILI ELECTRIC CONTROL TECH NANJING CO LTD