KR20160050763A - Motor drive device of single-phase and three-phase - Google Patents

Abstract

The present invention relates to a motor drive device for a single-phase and a three-phase, and the purpose of the present invention is to provide the motor drive device for a single-phase and a three-phase, in which a single-phase controller and a three-phase controller are manufactured in a single chip and a single-phase or three-phase motor drive signal is easily selectable within the single chip. To this end, the motor drive device for the single-phase and the three-phase according to the present invention comprises: a hall sensor input terminal unit having a plurality of input terminals configured to receive an output signal of a hall sensor which detects a rotor position of a motor; a controller unit including a single-phase controller configured to generate a single-phase drive signal for driving the single-phase motor based on a single-phase hall sensor signal provided from the hall sensor input terminal unit, and a three-phase controller configured to generate a three-phase drive signal for driving the three-phase motor based on a three-phase hall sensor signal provided from the hall sensor input terminal; and a cell selector unit configured to output a selection signal for activating the single-phase controller or the three-phase controller based on an input signal applied to at least one of the plurality of input terminals of the hall sensor input terminal unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a motor driving apparatus,

The present invention relates to a single-phase and three-phase motor drive apparatus, and more particularly, to a single-phase and three-phase motor drive apparatus that supports single-phase and multi-phase input by a single chip, Driving device.

Generally, a brushless motor has a permanent magnet as a rotor, and a current according to the position of the permanent magnet is caused to flow through a winding constituting a brushless motor by a power conversion circuit such as an inverter, .

The driving device for driving such a brushless motor controls a power conversion circuit such as an inverter and the power conversion circuit based on the position of the rotor.

Here, as a method of detecting the position of the rotor as the permanent magnet, there have been proposed a method of using a position sensor such as a Hall element, a method of estimating from the current and voltage flowing in the winding, and the like.

As a method of controlling the number of revolutions of the brushless motor, the number of revolutions of the rotor is calculated from the positional information of the rotor obtained by the above-described position detecting method, and the number of revolutions A method of adjusting an applied voltage or current is generally used. This makes it possible to drive the brushless motor at an arbitrary number of revolutions.

The brushless motor may be classified into a single-phase, two-phase, and three-phase motors by the winding structure of the rotor. In general, single-phase brushless motors are mainly used for small-sized cooling fan motors, which are mainly used for cooling fans of electronic products. Three-phase motors with three (W, V, W) Is the mainstream.

Single-phase brushless motors are controlled by only DC voltage of one phase, so they are similar to DC motors. However, the principle and control of three-phase brushless motors are relatively difficult. Such a brushless motor can be classified as a synchronous motor from the viewpoint of controlling the magnetic field generated by the permanent magnets of the rotor and the rotor system generated by the windings of the stator to be synchronized.

As described above, the brushless motor can be driven in a single-phase or three-phase, depending on the application. Conventionally, the controller for driving the motor has been manufactured only for single-phase or three-phase motors.

Therefore, the manufacturer has to separately design the product for manufacturing the single-phase controller and the three-phase controller, and the manufacturing cost must be increased separately.

In addition, since both types of driving ICs are required to be applied to both the single phase and the three phase in terms of the consumer, there is a problem that the purchase cost is doubled.

KR 10-2010-0019182 A KR 10-1041050 B1 KR 10-0202386 B1

SUMMARY OF THE INVENTION An object of the present invention to solve the problems derived from the prior art is to provide a single phase controller and a three phase controller in one chip and a single phase or three phase motor drive signal in a single chip, And a three-phase motor drive apparatus.

According to an embodiment of the present invention, there is provided a Hall sensor input terminal comprising a plurality of input terminals for receiving an output signal of a Hall sensor for detecting a rotor position of a motor, Phase motor based on a three-phase Hall sensor signal provided from the Hall sensor input terminal unit, and a three-phase Hall sensor signal provided from the hall sensor input terminal unit, A controller unit including a three-phase controller for generating a three-phase driving signal for driving the three- And a selector unit for outputting a selection signal for activating the single-phase controller or the three-phase controller based on an input signal applied to at least one input terminal of the plurality of input terminals at the hall sensor input terminal Phase and three-phase motor drive apparatus.

Preferably, when a predetermined voltage signal is input to the hall sensor input terminal portion, the controller unit outputs a single-phase driving signal generated in the single-phase controller.

Preferably, the voltage signal is a voltage of a predetermined voltage level.

Preferably, the apparatus further includes a lead-off detector for determining whether a signal input to the Hall sensor input terminal is ground or an Hall sensor output signal.

Preferably, the apparatus further includes a Hall-amplifier unit for generating three-phase reference signals (U, V, W) corresponding to output signals of Hall sensors input to the Hall sensor input terminal unit, And outputs the single-phase driving signal or the three-phase driving signal.

According to the present invention, since the single-phase controller and the three-phase controller for driving the motor are manufactured as one chip, the manufacturing cost can be greatly reduced from the manufacturer's point of view. So that it is possible to reduce the purchase cost.

FIG. 1 is a block diagram showing an example in which a single-phase and three-phase motor drive apparatus according to an embodiment of the present invention is applied,
FIG. 2 is a block diagram specifically illustrating a configuration of a single-phase and three-phase motor drive apparatus according to an embodiment of the present invention,
FIG. 3 is a block diagram specifically showing the internal configuration of the controller of FIG. 2,
4 is a logic circuit diagram specifically showing the configuration of the selector unit of Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Brief Description of Drawings FIG. 1 is a block diagram of a computer system according to an embodiment of the present invention; FIG. 2 is a block diagram of a computer system according to an embodiment of the present invention; FIG.

The single-phase and three-phase motor drive apparatus 100 according to the embodiment of the present invention can be applied to a motor system as shown in FIG. 1, and is used for selectively driving a single-phase or three-phase motor.

2, the present invention includes a hall sensor input terminal unit 110, a controller unit 130, and a selector unit 150. [

First, the Hall sensor input terminal unit 110 will be described.

The hall sensor input terminal unit 110 includes a plurality of input terminals for receiving an output signal of a hall sensor for detecting a rotor position of the motor.

Here, the Hall sensors may be composed of three motors for driving the motors. The three hall sensors detect the position of the motor rotor in units of 60 electrical degrees to determine the sector, And controls the driving and current of the motor by switching according to the position of each sector of the motor rotor.

The Hall sensor is mounted on the stator of the motor, detects the position of the rotor from the magnitude of the magnetic flux generated when the rotor passes the hall sensor, and outputs a status signal for each sector. That is, the hall sensor is a sensor for measuring the rotation angle of the motor. One pulse is generated in each electric wire, and the three pulses have a phase difference of 60 ° electrical angle with each other. The position can be recognized.

The Hall sensor 120 may further include a Hall amplifier 120 for generating three-phase reference signals U, V, and W corresponding to output signals of Hall sensors input to the Hall sensor input terminal 110. The Hall amplifier 120 receives the signals (HIN1, HIP1, HIN2, HIP2, HIN3, HIP3) output from the Hall sensors and generates a three-phase reference signal for driving the motor. Here, since the three-phase reference signal is generated in correspondence with the signal output from the hall sensor, the three-phase reference signal also includes information on the intensity of the rotor magnetic field (position of the rotor).

Next, the controller unit 130 will be described.

As shown in FIG. 3, the controller 130 includes a single-phase controller 136 for generating a single-phase driving signal for driving a single-phase motor based on a single-phase hall sensor signal provided from the hall sensor input terminal 110, And a three-phase controller 134 for generating a three-phase driving signal for driving the three-phase motor based on the three-phase hall sensor signal provided from the hall sensor input terminal unit 110.

The single-phase controller 136 and the three-phase controller 134 are connected to the output terminal of the selector unit 150. The single-phase controller 136 is connected to the selector unit 150 via the NOT gate 132, And the three-phase controller 134 is directly connected to the selector unit 150. Accordingly, the single-phase controller 136 and the three-phase controller 134 receive the opposite signals of the selector unit 150 by the NOT gate 132.

Accordingly, when the three-phase controller 134 is activated to generate a three-phase driving signal for driving the three-phase motor, the single-phase controller 136 is inactivated.

In contrast, when the single-phase controller 136 is activated to generate a single-phase driving signal for driving the single-phase motor, the three-phase controller 134 is inactivated.

On the other hand, a multiplexer 138 is connected to an output terminal of the controller unit 130 to select and output an activated signal of a single-phase driving signal or a three-phase driving signal.

Next, the selector unit 150 will be described.

The selector unit 150 activates the single-phase controller 136 or the three-phase controller 134 based on an input signal applied to at least one input terminal of the plurality of input terminals at the hall sensor input terminal And outputs a selection signal.

Here, when a preset voltage signal is input to the hall sensor input terminal unit 110, the selector unit 150 outputs a selection signal for activating the single-phase controller 136. At this time, the voltage signal is a voltage source of a preset voltage level, and VDD voltage is used in the present embodiment.

The selector unit 150 for outputting the selection signal by the predetermined voltage source in this way can be constituted by a logic circuit as shown in Fig. 4- (a). 4- (a), the selector unit 150 includes a pair of NAND gates 151 and 152 receiving two Hall sensor signals or voltage signals, and a pair of NAND gates 151 and 152 And a NOR gate 153 receiving the output signal of the three-phase controller 136 or the three-phase controller 134 and outputting a selection signal for operating only one of the single-phase controller 136 and the three-phase controller 134.

To understand the driving principle, a detailed description will be made with reference to, for example, FIG. 3 and FIG. 4- (a).

When the voltage signal VDD is input to the input terminals HIN2 and HINP2 of the pair of NAND gates 151 and 152, the pair of NAND gates 151 and 152 outputs a low signal, 153 receive the low signal and output a high signal. Accordingly, since the single-phase controller directly connected to the NOR gate 153 is activated by receiving the high signal, the controller unit 130 operates as the single-phase controller 136. A NOT gate 132 is connected between the three-phase controller 134 and the NOR gate 153 so that a high signal is converted into a low signal by the NOR gate 153, Signal is received and deactivated.

On the contrary, when the hall sensor signals other than the voltage signal VDD are input to the input terminals HIN2, HINP2, HIN3, HIP3 of the pair of NAND gates 151, 152, the pair of NAND gates 151, And the NOR gate 153 receives the high signal and outputs a low signal. Accordingly, the three-phase controller 134 is activated by receiving the high signal converted by the NOT gate 132, so that the controller unit 130 operates as the three-phase controller 134. At this time, the single-phase controller 136 receives the low signal as it is directly connected to the NOR gate 153, and is inactivated.

When the ground signal is input as the input signal, the single-phase controller 136 is activated to output a single-phase driving signal. When the three-phase (three-phase) driving signal is input to the hall sensor input terminal unit 110, The controller 134 is deactivated. In order to determine whether the hall sensor input terminal unit 110 is electrically grounded or not, a lead-off detection circuit for determining whether the input signal is a ground signal or a Hall sensor output signal, (lead-off detect) unit.

The selector unit 150 may output a selection signal for activating the single-phase controller 136 or the three-phase controller 134 based on the reference signal output from the above-described Hall-amplifier unit 120.

The selector unit 150 for outputting the selection signal by the three-phase reference signal in this way can be constituted by a logic circuit as shown in Fig. 4- (b). 4 (b), the selector unit 150 includes a NAND gate 155 receiving two reference signals among the three-phase reference signals of the Hall-amplifier unit 120, And a NOT gate 156 which receives an output signal of the controller 155 and outputs a selection signal for operating either the single-phase controller 136 or the three-phase controller 134.

According to the present invention described above, the manufacturing cost can be greatly reduced from the standpoint of the manufacturer by manufacturing the single-phase controller 136 and the three-phase controller 134, which are selectively activated, as one chip, Since the motor can be driven by the one-chip without discriminating the motor, it is possible to reduce the purchase cost and improve the use efficiency.

The foregoing has outlined rather broadly the features and technical advantages of the present invention in order that the claims of the invention to be described below may be better understood. The embodiments described above are susceptible to various modifications and changes within the technical scope of the present invention by those skilled in the art. These various modifications and changes are also within the scope of the technical idea of the present invention, and will be included in the claims of the present invention described below.

100: Motor drive device 110: Hall sensor input terminal part
120: Hall amplifier section 130: Controller section
132: NOT gate 134: Three phase controller
136: Single phase controller 138: Multiplexer
150: selector unit 151, 152, 155: NAND gate
153: NOR gate 156: NOT gate
160:

Claims (5)

A hall sensor input terminal portion including a plurality of input terminals for receiving an output signal of a hall sensor for detecting a rotor position of a motor;
Phase motor based on a three-phase Hall sensor signal provided from the Hall sensor input terminal unit, and a three-phase Hall sensor signal provided from the hall sensor input terminal unit, A controller unit including a three-phase controller for generating a three-phase driving signal for driving the three- And
A selector unit for outputting a selection signal for activating the single-phase controller or the three-phase controller based on an input signal applied to at least one input terminal of the plurality of input terminals at the hall sensor input terminal;
Phase and three-phase motor drive apparatuses. The method according to claim 1,
Wherein the controller unit outputs a single-phase driving signal generated by the single-phase controller when a predetermined voltage signal is input to the Hall sensor input terminal unit. 3. The method of claim 2,
Wherein the voltage signal is a voltage of a predetermined voltage level. The method according to claim 1,
Further comprising a lead-off detector for determining whether a signal input to the Hall sensor input terminal is ground or a Hall sensor output signal. The method according to claim 1,
And a Hall-amplifier unit for generating three-phase reference signals (U, V, and W) corresponding to output signals of Hall sensors input to the hall sensor input terminal unit,
And the selector unit selects to output the single-phase drive signal or the three-phase drive signal based on the reference signal of the Hall-amplifier unit.

Images