TWI462464B - Electric motor module capable of controlling power factor - Google Patents

Description

Controllable power factor motor module

The invention relates to a motor module, in particular to a controllable power factor motor module.

The alternator is the main source of power for daily life, causing the low-power power circuit to be filled with invalid power, increasing the power loss in the line, affecting the power efficiency, and solving the problem is to improve the power factor.

For low-power AC motors, squirrel-cage motors and brushless motors are often used, and the rotor flux cannot be independently controlled. In practice, the use of series/parallel power capacitors to improve the power factor, but the power The capacitor is too bulky, the control is complicated, and the power factor cannot be smoothly controlled. At the same time, the power factor of the point end can only be improved and connected, so it is not widely used in the field of low power. Moreover, in practice, there is no network. Function, can only operate in a single machine, improve the single point power efficiency in the power circuit, or use complex control methods to change the series/parallel power capacitor, but only limited to small area power control, and can not change the system at will. The architecture, which is not scalable, needs to be improved.

Therefore, the object of the present invention is to provide a controllable power factor motor module, which effectively improves the power factor of the power circuit, thereby effectively promoting power use efficiency.

Thus, the controllable power factor motor module of the present invention comprises a motor and a control device for controlling the operation of the motor; wherein the motor includes a body, a rotating shaft pivoted on the body, and the motor The first and second motor groups on the body; the control device can detect the voltage and power in the first motor group, and calculate the required voltage of the stator flux of the second motor group, Controlling the stator flux generated by inputting the voltage into the second motor group, and simultaneously inducing a voltage for the second rotor coil of the second motor group, and transmitting the voltage to the first rotor coil of the first motor group Indirectly controlling the strength of the rotating magnetic field generated by the first motor group, generating torque and controlling the power factor generated by the motor, thereby effectively promoting power use efficiency; and, in addition, a communication mode is further provided on the control device a group, such that a plurality of controllable power motor modules can be combined with each other, or an independent detecting device is disposed in the same power circuit to detect and control the use Circuit voltage and power at different points, and thus the electric circuit of the power control system network cloud.

The above and other technical contents, features, and advantages of the present invention will become apparent from the Detailed Description of the <RTIgt;

Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 1, the controllable power factor motor module 3 of the present invention includes a motor 31, and a control device 32 for controlling the operation of the motor 31. The motor 31 includes a body 311, and a pivoting body a rotating shaft 312 on the main body 311, a first motor unit 313 disposed on the main body 311, and a second motor unit 314 disposed on the main body 311. The first electric motor unit 313 includes a first motor unit 313. a first stator coil 3131 on the main body 311, a first rotor coil 3132 fixed on the rotating shaft 312 and opposite to the first stator coil 3131, and a short-circuit ring disposed on the first rotor coil 3132 3133, wherein the first stator coil 3131 is available for power input to generate a certain sub-magnetic flux and driving force; and the second motor unit 314 includes a second stator coil 3141 disposed on the body 311. The second rotor coil 3142 is fixed to the second rotor coil 3142 and is electrically connected to the first rotor coil 3132 to provide the first rotor coil. In addition, in this embodiment, a rectifier 315 is further disposed between the second rotor coil 3142 and the first rotor coil 3132 to stabilize the voltage output by the second rotor coil 3142. In addition, in this embodiment, The power of the second motor unit 314 In addition, the power supply device 4 inputs power, and of course, the power supply device 4 uses other energy sources such as solar energy, wind power, etc. for the purpose of environmental protection; and the control device 32 includes a first motor group 313. The voltage detector 321 is a power detector 322 disposed on the first motor group 313, and a controller 323 connected to the voltage detector 321, the power detector 322, and the second stator coil 3141, respectively.

Referring to FIGS. 1 and 2, in the operation of the present embodiment, electric power is input from the external power source to the first stator coil 3131 so that the first stator coil 3131 The stator magnetic flux is generated, and the first rotor wire 3132 is transmitted through the short-circuit ring to induce a surrounding magnetic field to generate a magnetic force to rotate, and the voltage detector 321 and the power detector 322 input the synchronous sensing to the first. After the voltage and power factor in the motor group 313, and the voltage and power factor received by the controller 323, etc., to calculate the stator flux required by the second stator coil 3141, to control the voltage input to the The second stator coil 3141 generates a stator magnetic flux, and at the same time, the second rotor coil 3142 is induced to induce a voltage, and the voltage value is passed through the rectifier 315 and then input into the first rotor coil 3132 to indirectly control the first motor group. The strength of the rotating magnetic field generated by 313 generates torque and controls the power factor generated by the motor 31, thereby effectively promoting power use efficiency.

Referring to FIG. 3, in the second preferred embodiment of the present invention, the controllable power factor motor module 3 further includes components such as an electric motor 31 and a control device 32, and the components and connection relationships are the same as those described in the first embodiment. In particular, when there are a plurality of controllable power motor modules 3, in order to enable the controllable powers to be connected to each other, the control device 32 may be additionally provided with a control device 32. a communication module 33, the communication module 33 has a receiver 331 connected to the controller 323, and a transmitter 332 capable of transmitting data to connect a plurality of controllable power motors through the receiver 331 and the transmitter 332. Module 3; therefore, by the design of the communication module 33, the controllable power factor motor module can be determined by matching the voltage and power factor returned by the plurality of controllable power motor modules 3 3 control mode, complete the controllable power due to electricity The power circuit of the motive module 3 is systemized to achieve optimal power usage efficiency.

Referring to FIG. 4, in a third preferred embodiment of the present invention, the controllable power factor motor module 3 further includes components such as an electric motor 31, a control device 32, and a communication module 33, and the foregoing components and connection relationships are the same as the second implementation. For example, the controllable power can be additionally provided with an independent detecting device 34 on the power circuit of the motor module 3, and the independent detecting device 34 has a connector 341, respectively The connector 341 is connected to the second voltage detector 342, the second power detector 343, and a communicator 344 capable of mutually transmitting signals to the communication module 33, and the communicator 344 sends a message for the reception. The 331 is received; therefore, the connector 341 is mounted on a contact point of the same power circuit as the controllable motor module 3, so that the independent detector 34 detects the voltage of the contact. The power factor and the like are transmitted to the receiver 331 through the communicator 344 for receiving, so that the controller 323 can integrate the voltage and power factor input to the motor 3, thereby controlling the power generated by the motor 3. Factor to eliminate power loops The reactive power to achieve systematic power circuit, prompting the electric circuit to achieve the best efficiency of electricity use.

In summary, the controllable power factor motor module of the present invention can detect the voltage and power in the first motor group by using the control device, and calculate the voltage required for the stator flux of the second motor group. And controlling the stator flux generated by inputting the voltage into the second motor group, and simultaneously inducing a voltage for the second rotor coil of the second motor group, and transmitting the voltage to the first of the first motor group The rotor coil indirectly controls the strength of the rotating magnetic field generated by the first motor group, generates torque and controls the power factor generated by the motor, thereby effectively promoting power use efficiency.

However, the above description is only for the purpose of illustrating the preferred embodiments of the present invention, and is not intended to limit the scope of the embodiments of the present invention. All should remain within the scope of the invention patent.

3. . . Controllable power factor motor module

31. . . electric motor

311. . . Ontology

312. . . Rotating shaft

313. . . First motor unit

3131. . . First stator coil

3132. . . First rotor coil

3133. . . Short circuit ring

314. . . Second motor unit

3141. . . Second stator coil

3142. . . Second rotor coil

315. . . Rectifier

32. . . Control device

321. . . Voltage detector

322. . . Power detector

323. . . Controller

33. . . Communication module

331. . . receiver

332. . . launcher

4. . . Power supply unit

34. . . Independent detection device

341. . . Connector

342. . . Second voltage detector

343. . . Second power detector

344. . . Communicator

Figure 1 is a schematic view of a first preferred embodiment of the present invention;

2 is a flow chart of a first preferred embodiment of the present invention;

Figure 3 is a schematic view of a second preferred embodiment of the present invention; and

Figure 4 is a schematic view of a third preferred embodiment of the present invention.

3. . . Controllable power factor motor module

31. . . electric motor

311. . . Ontology

312. . . Rotating shaft

313. . . First motor unit

3131. . . First stator coil

3132. . . First rotor coil

3133. . . Short circuit ring

314. . . Second motor unit

3141. . . Second stator coil

3142. . . Second rotor coil

315. . . Rectifier

32. . . Control device

321. . . Voltage detector

322. . . Power detector

323. . . Controller

Claims (5)

A controllable power factor motor module includes: a motor comprising a body, a rotating shaft pivoted on the body, a first motor unit disposed on the body, and a body disposed on the body The second motor unit, wherein the first motor includes a first stator coil disposed on the body, a first rotor coil fixed on the rotating shaft and opposite to the first stator coil, and a first motor a shorting ring disposed on the first rotor coil, wherein the first stator coil is electrically input to generate a certain sub-magnetic flux, and the second motor unit includes a second stator disposed on the body a coil, and a second rotor coil fixed on the rotating shaft and opposite to the second stator coil, and the second rotor coil is electrically connected to the first rotor coil to provide the first rotor coil voltage And a control device comprising a voltage detector disposed on the first motor group, a power detector disposed on the first motor group, and a voltage detector and a power detector respectively connected Detector, second stator coil a controller, wherein the controller detects the input voltage and the power factor of the first motor group through the voltage and power detector to calculate a voltage required for the second coil stator flux, and Inputting the voltage into the second stator coil such that the second stator coil generates a stator flux for the second rotor coil to generate an induced voltage and output the voltage to the first rotor coil for indirect control The rotating magnetic field generated by the first motor group is strong, thereby controlling the power factor of the electric circuit of the first motor group. According to the controllable power factor motor module of claim 1, wherein the control device further comprises a communication module, the communication module includes a receiver connected to the controller, and a transmittable data The transmitter transmits the receiver and the transmitter. According to the controllable power factor motor module of claim 2, an independent detecting device is provided, and the independent detecting device has a connector, and a second voltage detector connected to the connector, a second power detector and a communicator capable of mutually transmitting signals to and from the communication module. The controllable power factor motor module according to claim 1 or 2, wherein the power of the second motor group is further input by a power supply device. The controllable power factor motor module according to claim 1 or 2, wherein a rectifier is further disposed between the second rotor coil and the first rotor coil.