KR20140121224A - Motor driving device, and method for cotrolling motor - Google Patents
Motor driving device, and method for cotrolling motor Download PDFInfo
- Publication number
- KR20140121224A KR20140121224A KR20130037735A KR20130037735A KR20140121224A KR 20140121224 A KR20140121224 A KR 20140121224A KR 20130037735 A KR20130037735 A KR 20130037735A KR 20130037735 A KR20130037735 A KR 20130037735A KR 20140121224 A KR20140121224 A KR 20140121224A
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- KR
- South Korea
- Prior art keywords
- current
- motor
- drive
- comparator
- driving
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
- H02P29/0241—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the fault being an overvoltage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2203/00—Indexing scheme relating to controlling arrangements characterised by the means for detecting the position of the rotor
- H02P2203/03—Determination of the rotor position, e.g. initial rotor position, during standstill or low speed operation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
Description
BACKGROUND OF THE
In recent years, there has been an increasing demand for electric devices or electronic devices for individuals, homes, offices, and the like. Such a device may employ a driving circuit for driving a specific operation in the inside, for example, a motor device.
A motor drive control device is used to control the driving of the motor device.
Such a motor drive control device is required to sense a current due to the driving of the motor device to sense an overcurrent state and perform appropriate operation control.
In the conventional motor drive control technology, control is performed based on a process of analog-to-digital conversion of the detected current. For example, a method of digitally converting a sensed current and detecting an overload current or a peak current using a control processor is mainly used.
However, in this conventional method, an analog-to-digital conversion process is indispensable, and there is a limitation that an exception process for a current is performed only through a control processor. As a result, there arises a problem that a delay occurs in the control operation, thereby making it difficult to protect the circuit. Further, there is a problem that the configuration of the motor drive control device is complicated and the unit price is increased.
The following
SUMMARY OF THE INVENTION The present invention provides a motor drive control apparatus and method capable of detecting a peak current or an overload current with respect to a drive current of a motor apparatus with a simpler configuration, and a motor system using the same.
A first technical aspect of the present invention proposes a motor drive control device. The motor drive control device includes a control unit for generating a control signal for controlling the operation of the motor device, a drive control unit for generating a drive signal for driving the motor device using the position information of the rotor or the control signal, An inverter unit for supplying a driving current to the motor device according to the driving signal to drive the motor device, and a current detector for detecting a peak current or an overload current in the driving current do.
In one embodiment, the current detector receives a current sensor for sensing the driving current and a predetermined peak threshold and the driving current, and outputs a high value if the driving current is greater than the peak threshold value And a first comparator for providing the control signal to the drive control unit.
In one embodiment, the current detector includes a second comparator that receives a predetermined overload peak value and the drive current, and outputs a high value to the controller when the drive current is greater than the overload threshold value .
In one embodiment, the drive control unit receives the output of the first comparator and may generate the drive signal to stop the operation of the motor device when the output of the first comparator is high.
In one embodiment, the drive control unit includes: a plurality of gate drivers for respectively controlling a plurality of pairs of power switching elements included in the inverter unit; and a control unit for controlling the plurality of pairs of power switching And a gate controller for controlling the plurality of gate drivers to drive the elements separately from each other.
In one embodiment, the gate controller receives the output of the first comparator and, if the output value of the first comparator is high, controls the plurality of gate drivers to stop driving the plurality of power switching elements have.
In one embodiment, the controller receives the output of the second comparator, and determines that the output of the second comparator is overloaded if the output of the second comparator is high for more than a predetermined time.
A second technical aspect of the present invention proposes a motor system. The motor system includes a motor device that rotates using a driving current input from the outside, and a controller that senses generation of a peak current or an overload current in the driving current, and detects a peak current or an overload current according to the operation of the motor device And a motor drive control device for controlling the motor.
In one embodiment, the motor drive control device includes a control unit for generating a control signal for controlling the operation of the motor device, a drive signal for driving the motor device using the position information of the rotor or the control signal, An inverter unit for supplying a driving current to the motor device in accordance with the driving signal to drive the motor device; and a controller for, when a peak current or an overload current occurs in the driving current, And a current detector for detecting the current.
In one embodiment, the current detector includes a current sensor for sensing the driving current, a predetermined peak threshold value and the driving current, and outputs a high value if the driving current is greater than the peak threshold value A second comparator for receiving a driving current and a first comparator for providing a predetermined overload peak value and a driving current to the driving control unit and outputting a high value to the control unit when the driving current is greater than the overload threshold value, .
In one embodiment, the drive control unit includes: a plurality of gate drivers for respectively controlling a plurality of pairs of power switching elements included in the inverter unit; and a control unit for controlling the plurality of pairs of power switching And a gate controller for controlling the plurality of gate drivers to drive the elements separately from each other.
In one embodiment, the gate controller receives the output of the first comparator and, if the output value of the first comparator is high, controls the plurality of gate drivers to stop driving the plurality of power switching elements have.
In one embodiment, the controller receives the output of the second comparator, and may determine that the overload state is present if the output value of the second comparator is high for a predetermined time or more.
A third technical aspect of the present invention proposes a motor drive control method. The motor drive control method is performed in a motor drive control device that controls drive of the motor device by using a drive current of the motor device. The motor drive control method comprising: a detection step of detecting a drive current of the motor device; a step of comparing the detected drive current with a predetermined peak threshold value, and if the detected drive current is greater than a peak threshold value, And controlling the motor device to stop if the detected drive current is greater than a predetermined time longer than the overload threshold value, .
In one embodiment, the peak management step may include inputting the predetermined peak threshold value and the drive current to a first comparator, and outputting the drive current to the motor device using a gate driver if the output value of the first comparator is high. And stopping the operation.
In one embodiment, the overload management step may include inputting the predetermined overload threshold value and the drive current to a second comparator, and if the output value of the second comparator has a high value over the predetermined time, And controlling the operation of the motor device to be stopped by using the control signal.
According to the present invention, it is possible to detect a peak current or an overload current with a relatively simple structure, thereby preventing circuit damage due to an overcurrent detection delay and effectively lowering the unit cost of the device.
1 is a block diagram for explaining an embodiment of a motor system according to the present invention.
2 is a block diagram for explaining an embodiment of the motor
3 is a block diagram for explaining an embodiment of the drive control unit and the interverter unit of FIG.
4 is a flowchart for explaining an embodiment of a motor drive control method according to the present invention.
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
However, the embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. Further, the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art.
In the drawings referred to in the present invention, elements having substantially the same configuration and function will be denoted by the same reference numerals, and the shapes and sizes of the elements and the like in the drawings may be exaggerated for clarity.
Hereinafter, the motor device refers to a device that performs rotational operation using external input power, and the motor drive control device refers to a device that controls the driving of the motor device. It is also referred to as a motor system including a motor device and a motor drive control device. Here, the motor device and the motor drive control device are logically separate components, but may also be implemented as one object according to an embodiment.
1 is a block diagram for explaining an embodiment of a motor system according to the present invention.
As shown in FIG. 1, the motor system includes a motor
The
The motor
The motor
The
The
The
The
Each of the components of the motor
2 is a block diagram for explaining an embodiment of the motor
Referring to FIG. 2, the
The
The
The output (first signal) of the
Accordingly, the
The
If the input second signal maintains a high value for a predetermined time or more, the
FIG. 3 is a configuration diagram for explaining an embodiment of the drive control unit and the interverter unit of FIG. 1;
Referring to FIG. 3, the
The
The
In one embodiment, the
The
The
4 is a flowchart for explaining an embodiment of a motor drive control method according to the present invention.
The embodiment of the motor drive control method to be described with reference to Fig. 4 is performed in the motor drive control device described above with reference to Figs. 1 to 3, and therefore, the same as the above description with reference to Figs. 1 to 3, The corresponding content will not be duplicated again in the following.
Referring to Fig. 4, the motor
Then, the motor
Alternatively, the motor
In the illustrated example, it is described that the overload management step is performed after the peak management step. However, it is for convenience of explanation that it is obvious that the peak management step and the overload management step may be performed independently of each other or in parallel .
In one embodiment of the peak management step, the motor
In one embodiment of the overload management step, the motor
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.
Therefore, the spirit of the present invention should not be construed as being limited to the above-described embodiments, and all of the equivalents or equivalents of the claims, as well as the following claims, I will say.
100: Motor drive control device
110:
120:
121: gate controller
122, 123, 124: gate driver
130:
140:
141: Current sensor
142: first comparator
143: second comparator
200: Motor device
Claims (16)
A drive control unit for generating a drive signal for driving the motor device using position information of the rotor or the control signal;
An inverter unit for supplying a driving current to the motor device according to the driving signal to drive the motor device; And
A current detector for detecting a peak current or an overload current in the driving current when the peak current or the overload current occurs; And the motor drive control device.
A current sensor for sensing the driving current; And
A first comparator receiving a predetermined peak threshold value and the driving current and outputting a high value to the driving control unit if the driving current is greater than the peak threshold value; And the motor drive control device.
A second comparator that receives a predetermined overload peak value and the drive current, and outputs a high value to the control unit if the drive current is greater than the overload threshold value; Further comprising:
And generates the drive signal to stop the operation of the motor device when the output of the first comparator is high and the output of the first comparator is high.
A plurality of gate drivers for respectively controlling a plurality of pairs of power switching elements included in the inverter section; And
A gate controller for controlling the plurality of gate drivers to individually drive the plurality of pairs of power switching elements based on the position information of the rotor and the control signal; And the motor drive control device.
And controls the plurality of gate drivers to stop driving the plurality of power switching elements when the output of the first comparator is high and the output value of the first comparator is high.
When the output of the second comparator is high and the time when the output of the second comparator is high is equal to or longer than a predetermined time, the overload state is determined.
And a motor drive control device for detecting generation of a peak current or an overload current in the drive current and controlling operation of the motor device in accordance with generation of the peak current or the overload current.
A control unit for generating a control signal for controlling the operation of the motor device;
A drive control unit for generating a drive signal for driving the motor device using position information of the rotor or the control signal;
An inverter unit for supplying a driving current to the motor device according to the driving signal to drive the motor device; And
A current detector for detecting a peak current or an overload current in the driving current when the peak current or the overload current occurs; ≪ / RTI >
A current sensor for sensing the driving current;
A first comparator receiving a predetermined peak threshold value and the driving current and outputting a high value to the driving control unit if the driving current is greater than the peak threshold value; And
A second comparator that receives a predetermined overload peak value and the drive current, and outputs a high value to the control unit if the drive current is greater than the overload threshold value; ≪ / RTI >
A plurality of gate drivers for respectively controlling a plurality of pairs of power switching elements included in the inverter section; And
A gate controller for controlling the plurality of gate drivers to individually drive the plurality of pairs of power switching elements based on the position information of the rotor and the control signal; ≪ / RTI >
And receives the output of the first comparator and controls the plurality of gate drivers to stop driving the plurality of pairs of power switching elements when the output value of the first comparator is high.
When the output of the second comparator is high and the time when the output of the second comparator is high is equal to or longer than a predetermined time.
A detecting step of detecting a driving current of the motor device;
A peak management step of comparing the detected drive current with a predetermined peak threshold value and controlling the motor device to stop if the detected drive current is greater than a peak threshold value; And
An overload management step of comparing the detected drive current with a predetermined overload threshold value and stopping the motor device if the detected drive current is greater than a predetermined overload threshold value by more than a predetermined time; And the motor drive control method.
Inputting the predetermined peak threshold value and the drive current into a first comparator; And
Controlling the operation of the motor device to stop using the gate driver when the output value of the first comparator is high; And the motor drive control method.
Inputting the predetermined overload threshold value and the drive current into a second comparator; And
Controlling the operation of the motor device to stop using the control unit if the output value of the second comparator has a value higher than the preset time; And the motor drive control method.
Priority Applications (1)
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KR20130037735A KR20140121224A (en) | 2013-04-05 | 2013-04-05 | Motor driving device, and method for cotrolling motor |
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KR20130037735A KR20140121224A (en) | 2013-04-05 | 2013-04-05 | Motor driving device, and method for cotrolling motor |
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KR20130037735A KR20140121224A (en) | 2013-04-05 | 2013-04-05 | Motor driving device, and method for cotrolling motor |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104698380A (en) * | 2015-02-11 | 2015-06-10 | 昆山华誉自动化科技有限公司 | Comprehensive testing system of automobile motor |
CN107565763A (en) * | 2016-06-29 | 2018-01-09 | 建准电机工业股份有限公司 | Motor, motor power control method and fan with motor |
CN108880342A (en) * | 2017-05-09 | 2018-11-23 | 晶宏半导体股份有限公司 | Three-phase direct-current brushless motor control system |
WO2021194943A1 (en) * | 2020-03-27 | 2021-09-30 | La-Z-Boy Incorporated | Furniture motion control system |
-
2013
- 2013-04-05 KR KR20130037735A patent/KR20140121224A/en not_active Application Discontinuation
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104698380A (en) * | 2015-02-11 | 2015-06-10 | 昆山华誉自动化科技有限公司 | Comprehensive testing system of automobile motor |
CN107565763A (en) * | 2016-06-29 | 2018-01-09 | 建准电机工业股份有限公司 | Motor, motor power control method and fan with motor |
CN108880342A (en) * | 2017-05-09 | 2018-11-23 | 晶宏半导体股份有限公司 | Three-phase direct-current brushless motor control system |
WO2021194943A1 (en) * | 2020-03-27 | 2021-09-30 | La-Z-Boy Incorporated | Furniture motion control system |
GB2607773A (en) * | 2020-03-27 | 2022-12-14 | La Z Boy Inc | Furniture motion control system |
US11844432B2 (en) | 2020-03-27 | 2023-12-19 | La-Z-Boy Incorporated | Furniture motion control system |
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