CN113765461A - Motor control device and method and electronic equipment - Google Patents
Motor control device and method and electronic equipment Download PDFInfo
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- CN113765461A CN113765461A CN202010504506.1A CN202010504506A CN113765461A CN 113765461 A CN113765461 A CN 113765461A CN 202010504506 A CN202010504506 A CN 202010504506A CN 113765461 A CN113765461 A CN 113765461A
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000000126 substance Substances 0.000 claims description 25
- 230000001360 synchronised effect Effects 0.000 description 9
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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
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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
- 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
- H02P29/028—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the motor continuing operation despite the fault condition, e.g. eliminating, compensating for or remedying the fault
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Abstract
The invention discloses a motor control device and method and electronic equipment. Wherein, motor control device includes: a control unit, a first signal switching component and N power components; n power components of the N power components are connected with the motor; n is greater than or equal to 2; n is greater than or equal to 1 and N is less than N; the control unit is used for outputting a first control signal to the first signal switching component when detecting that a fault power component exists in the n power components; and the first signal switching component is used for responding to the first control signal, disconnecting the fault power component from the motor, and selecting a new power component from N-N remaining power components to be connected with the motor. Therefore, when part of power components in the motor control device are in fault, the normal power components are used for replacing the fault power components to work so as to ensure the normal operation of the motor control device and ensure the stability of a motor control system.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a motor control device, a motor control method and electronic equipment.
Background
With the rapid development of modern information, motors are visible everywhere in the current life and production, and are small enough for children electric toys, electric fans, air conditioners and the like, large enough for the automobile industry, the aerospace industry and the like, and people cannot lack motors in life. The motor plays a very important role, and the importance of stable operation thereof is conceivable.
However, in the related art, a motor control apparatus for controlling a motor needs to be optimized.
Disclosure of Invention
In order to solve the related technical problems, embodiments of the present invention provide a motor control apparatus and method, and an electronic device.
The technical scheme of the embodiment of the invention is realized as follows:
an embodiment of the present invention provides a motor control device, including: a control unit, a first signal switching component and N power components; n power components of the N power components are connected with the motor; n is greater than or equal to 2; n is greater than or equal to 1 and N is less than N; wherein the content of the first and second substances,
the control unit is used for outputting a first control signal to the first signal switching component when detecting that a fault power component exists in the n power components;
and the first signal switching component is used for responding to the first control signal, disconnecting the fault power component from the motor, and selecting a new power component from N-N remaining power components to be connected with the motor.
In the above scheme, the number of the control units is N; each of the N control units is connected to one of the N power components; wherein the content of the first and second substances,
when the control unit detects that the power component connected with the control unit is a fault power component, the control unit outputs a first control signal to the first signal switching component;
the first signal switching component responds to the received at least one first control signal, disconnects the fault power component corresponding to each first control signal in the at least one first control signal from the motor, and selects at least one of the N-N remaining power components as a new power component to be connected with the motor.
In the above solution, when the control unit detects that m faulty power components exist among the n power components, it outputs a first control signal to the first signal switching component; m is greater than or equal to 1;
and the first signal switching component responds to the first control signal, disconnects the m fault power components from the motor, and selects m new power components from the N-N residual power components to be connected with the motor.
In the above solution, the apparatus further comprises a second signal switching component; wherein the content of the first and second substances,
the control unit is further configured to: when m failed power components are detected to exist in the n power components, outputting a second control signal to the second signal switching component;
the second signal switching component is used for responding to the second control signal, disconnecting the m fault power components from the control unit, and selecting m new power components from the N-N residual power components to be connected with the control unit; wherein the content of the first and second substances,
the m new power components selected by the second signal switching section are the same as the m new power components selected by the first signal switching section.
In the above solution, the first signal switching component includes a plurality of power electronic tubes or dc contactors; wherein the content of the first and second substances,
and the power electronic tube or the direct current contactor is used for conducting or disconnecting the connection between the corresponding power component and the motor.
In the above solution, the second signal switching part includes a plurality of power electronic tubes or dc contactors; wherein the content of the first and second substances,
the power electronic tube or the direct current contactor is used for conducting or disconnecting the connection between the corresponding power component and the control unit.
The embodiment of the invention also provides a motor control method, which is used for the control unit of the motor control device; the method comprises the following steps:
the control unit detects that a faulty power component exists among n power components in the motor control device;
the control unit outputs a first control signal to a first signal switching component of the motor control device so as to control the first signal switching component to disconnect the fault power component from the motor, and selects a new power component from N-N remaining power components to connect with the motor; wherein the content of the first and second substances,
the motor control device comprises N power components; n power components of the N power components are connected with the motor; n is greater than or equal to 2; n is greater than or equal to 1 and N is less than N.
In the above scheme, the number of the control units is N; each of the N control units is connected to one of the N power components; the method further comprises the following steps:
at least one control unit in the N control units detects that a power component connected with the control unit is a fault power component;
at least one control unit in the N control units outputs a first control signal to the first signal switching part to control the first signal switching part to disconnect the connection between the fault power component corresponding to each first control signal in the received at least one first control signal and the motor, and selects at least one of the N-N remaining power components as a new power component to be connected with the motor.
In the above scheme, the method further comprises:
the control unit detects that m failed power components exist in the n power components;
the control unit outputs a first control signal to the first signal switching component to control the first signal switching component to disconnect the m fault power components from the motor, and selects m new power components from the N-N residual power components to be connected with the motor; wherein the content of the first and second substances,
m is greater than or equal to 1.
An embodiment of the present invention further provides an electronic device, including: a motor and a motor control device according to any one of the above aspects; wherein the content of the first and second substances,
the motor control device controls the operation of the motor.
The embodiment of the invention provides a motor control device, a motor control method and electronic equipment, wherein the motor control device comprises: a control unit, a first signal switching component and N power components; n power components of the N power components are connected with the motor; n is greater than or equal to 2; n is greater than or equal to 1 and N is less than N; wherein the control unit is configured to output a first control signal to the first signal switching unit when it is detected that a faulty power component exists among the n power components; and the first signal switching component is used for responding to the first control signal, disconnecting the fault power component from the motor, and selecting a new power component from N-N remaining power components to be connected with the motor. According to the scheme of the embodiment of the invention, the control unit is used for detecting the fault power component, and when the fault power component is detected, a first control signal is output to the first signal switching component so as to control the first signal switching component to disconnect the fault power component from the motor, and a new power component is selected to be connected with the motor; therefore, when part of power components in the motor control device are in fault, the normal power components are used for replacing the fault power components to work so as to ensure the normal operation of the motor control device and ensure the stability of a motor control system.
Drawings
FIG. 1 is a schematic structural diagram of a motor control system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a motor control apparatus according to an embodiment of the present invention;
fig. 3 is a first schematic structural diagram of a motor control system of a three-phase permanent magnet synchronous motor according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a motor control system of a three-phase permanent magnet synchronous motor according to an embodiment of the present invention;
FIG. 5 is a schematic flow chart of a motor control method according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the invention.
Detailed Description
The technical scheme of the invention is further elaborated by combining the drawings and the embodiments in the specification.
In the related art, a motor control system generally includes a motor control device (also referred to as a motor controller) and a motor; in order to ensure the stability of the operation of a motor control system, various multi-redundancy schemes aiming at the motor exist; the principle of these multiple redundancy schemes for the motor is: a motor can possess a plurality of windings simultaneously, and when a winding appears unusually, redundant winding can also normally work to guarantee the normal operating of motor, and then improve motor control system's stability. However, in practical applications, there is a case where the motor control device is out of order or damaged, and at this time, the out-of-order or damaged motor control device cannot normally control the motor, that is, the motor control system cannot normally operate.
Based on this, in various embodiments of the present invention, a multiple redundancy scheme for the motor control device is proposed; as shown in fig. 1, the working principle of the multiple redundancy scheme of the embodiment of the present invention for the motor control device is as follows: the motor control system comprises a motor control device 101 and a motor 102; the motor control device 101 is used for driving the motor 102 to operate; a redundant component system consisting of N sub-redundant components is arranged in the motor control device 101, wherein N is an integer greater than or equal to 1; each sub-redundant part in the N sub-redundant parts has the same function, and the sub-redundant parts are mutually backed up; in actual application, the components needing redundancy determined according to the requirements of users can be collectively called as sub-redundancy components; the sub-redundant components at least comprise power components, and when the motor control device 101 works normally, any one of the N sub-redundant components can operate independently, so that the motor control system can operate normally; of course, when it is necessary to increase the rated power of the motor 102 controlled by the motor control device 101, the motor control device 101 may operate a plurality of sub-redundant components (corresponding to a plurality of power bridges) at the same time. In this way, when a part of the sub-redundant components fails or is damaged, the motor control device 101 may detect the failed or damaged sub-redundant component, and switch the failed or damaged sub-redundant component to another normal sub-redundant component, so as to ensure the normal operation of the motor control device 101, and thus ensure the stability of the motor control system.
An embodiment of the present invention provides a motor control device, as shown in fig. 2, the motor control device includes: a control unit 21, a first signal switching section 22, and N power sections 23; n power components 23 of the N power components 23 are connected to a motor; n is greater than or equal to 2; n is greater than or equal to 1 and N is less than N; wherein the content of the first and second substances,
the control unit 21 is configured to output a first control signal to the first signal switching unit 22 when it is detected that a faulty power component exists in the n power components 23;
the first signal switching component 22 is configured to disconnect the faulty power component from the motor in response to the first control signal, and select a new power component from the N-N remaining power components 23 to connect to the motor.
Here, it should be noted that, in various embodiments of the present invention, the meaning of connecting one component (referred to as a first component in the following description) to another component (referred to as a second component in the following description) is: conducting a physical line connected between the first component and the second component, namely, after the first component and the second component are electrified, the physical line connected between the first component and the second component has current passing through; of course, disconnecting the first part from the second part means: so that no current can flow through the physical lines connected between the first and second components after power is applied.
In addition, the motor control system formed by the motor control device provided by the embodiment of the invention can be applied to any electronic equipment needing to drive the motor; for example, the electronic device may be a vehicle such as a two-wheeled vehicle or a multi-wheeled vehicle (e.g., a tricycle or a quadricycle); for another example, the electronic device may be a child's electric toy, an electric fan, an air conditioner, or the like.
In practical applications, the power component 23 is used to convert direct current into alternating current.
In practical applications, the first signal switching part 22 may include a plurality of power valves or dc contactors; the power valves or dc contactors may be used to make or break connections of the respective power components to the motor. Of course, the developer may also use other controllable switching devices to construct the first signal switching part 22 according to design requirements.
In practical applications, in order to more accurately detect whether each power component 23 is faulty, N control units 21 may be provided in the motor control apparatus, and each control unit 21 of the N control units 21 may be connected to one power component 23 of the N power components 23; thus, the accuracy of detecting the fault power component can be improved.
Based on this, in an embodiment, the motor control device may include N control units 21; each control unit 21 of said N control units 21 is connected to one power component 23 of said N power components 23; wherein the content of the first and second substances,
when the control unit 21 detects that the power component 23 connected with the control unit is a fault power component, the control unit outputs a first control signal to the first signal switching component 22;
the first signal switching part 22 disconnects the faulty power component corresponding to each of the at least one first control signal from the motor in response to the received at least one first control signal, and selects at least one of the N-N remaining power components 23 as a new power component to be connected to the motor.
Specifically, taking a motor control system of a three-phase permanent magnet synchronous motor as an example (the form and the variety of the motor control system in daily life are numerous, but not one by one, the working principle of other motor control systems is the same as that of the motor control system of the three-phase permanent magnet synchronous motor), as shown in fig. 3, the motor control system of the three-phase permanent magnet synchronous motor includes a motor control device 301 and a motor 302, and the motor 302 is a three-phase permanent magnet synchronous motor; a redundant component system including N control units 21, N power components 23, and a first signal switching component 22 is provided in the motor control device 301; at this time, the function of a partial power tube or a dc contactor in the first signal switching part 22 to which one control unit 21, one power part 23 to which the corresponding control unit 21 is connected, and the corresponding power part 23 are connected corresponds to the function of one sub-redundant part shown in fig. 1; that is, each control unit 21 can drive the motor 302 to normally operate through one power component 23 connected to itself, and the three phases of the outputs U, V, W of all the power components 23 are connected in parallel. In practical application, only one control unit 21 can drive the motor 302 to operate through one power component 23 connected with the control unit; in the case that the rated power of the motor control device 301 needs to be increased, each of the plurality of control units 21 may be configured to drive the motor 302 to operate through one power component 23 connected to each of the plurality of control units 21. In the process that the motor control device 301 drives the motor 302 to operate, when only one control unit 21 drives the motor 302 to operate through one power component 23 connected with the control unit 21, when the control unit 21 detects that the power component 23 connected with the control unit is a fault power component, a first control signal is output to the first signal switching component 22 to control the first signal switching component 22 to disconnect the corresponding power component 23 from the motor 302, and one power component 23 is randomly selected from the power components 23 which are not connected with the motor 302 as a new power component to be connected with the motor 302; in the case that each of the at least two control units 21 drives the motor 302 to operate through one of the power components 23 connected to the control unit 21, when at least one of the at least two control units 21 detects that the power component 23 connected to the control unit is a failed power component, outputting a first control signal to the first signal switching component 22 to control the first signal switching component 22 to disconnect at least one corresponding power component 23 from the motor 302, and randomly selecting at least one power component 23 as a new power component from among the power components 23 not connected to the motor 302; here, the number of the failed power components may be the same as or different from the number of the new power components selected by the first signal switching component 22, and may be specifically set by a developer according to design requirements.
In practical applications, when the motor control apparatus includes N control units 21, there may be a case where the control unit 21 fails, and the failed control unit 21 may not output a signal to notify other components of its failure; therefore, a detection unit may be provided in the first signal switching part 22 for detecting whether or not the N control units 21 corresponding to the N power components 23 connected to the motor are failed, and when at least one failed control unit 21 is detected, disconnecting the power component 23 connected to each control unit 21 in the at least one failed control unit 21 from the motor, and selecting at least one of the N-N remaining power components 23 as a new power component to be connected to the motor.
In practical use, the power component 23 is a more lossy component than the control unit 21; therefore, in order to save cost, only one control unit 21 may be provided in the motor control device.
Based on this, in an embodiment, when the control unit 21 detects that there are m faulty power components among the n power components 23, it outputs a first control signal to the first signal switching component 22; m is greater than or equal to 1;
the first signal switching part 22 disconnects the m failed power parts from the motor and selects m new power parts from the N-N remaining power parts 23 to connect to the motor in response to the first control signal.
In practical applications, in order to reduce component loss and power loss caused by connection between the control unit 21 and each of the N power components 23, a signal switching component (hereinafter referred to as a second signal switching component) may be further disposed between the control unit 21 and the power components 23; when the control unit 21 detects that m faulty power components exist in the N power components 23 and outputs a first control signal to the first signal switching component 22, it may also output a second control signal to the second signal switching component to control the second signal switching component to disconnect the m faulty power components from the control unit, and select m new power components from N-N remaining power components to connect with the control unit; here, the m new power components selected by the second signal switching section are the same as the m new power components selected by the first signal switching section; in this way, power losses and component losses in the motor control device can be reduced.
Based on this, in an embodiment, the motor control apparatus may further include a second signal switching part; wherein the content of the first and second substances,
the control unit 21 may be further configured to: when m faulty power components among the n power components 23 are detected, outputting a second control signal to the second signal switching component;
the second signal switching component may be configured to disconnect the m failed power components from the control unit 21 in response to the second control signal, and select m new power components from the N-N remaining power components 23 to connect to the control unit 21; wherein the content of the first and second substances,
the m new power components selected by the second signal switching section are the same as the m new power components selected by the first signal switching section.
In practical applications, the second signal switching component may include a plurality of power valves or dc contactors; the power valves or dc contactors are used to connect or disconnect the corresponding power components 23 to the control unit 21. Of course, the developer may also use other controllable switching devices to build the second signal switching component according to design requirements.
Specifically, also taking a motor control system of a three-phase permanent magnet synchronous motor as an example, as shown in fig. 4, the motor control system of the three-phase permanent magnet synchronous motor includes a motor control device 401 and a motor 402, and the motor 402 is a three-phase permanent magnet synchronous motor; a control unit 21 and a redundant component system including a first signal switching component 22, N power components 23, and a second signal switching component 403 are provided in the motor control device 401; at this time, the function of one power component 23, the partial power valves or dc contactors in the first signal switching components 22 to which the corresponding power component 23 is connected, and the partial power valves or dc contactors in the second signal switching components 403 to which the corresponding power component 23 is connected corresponds to the function of one sub-redundant component shown in fig. 1; the signal inputs of the N power components 23 are connected in parallel to the signal output of the control unit 21 and are connected in between by the second signal switching component 403, so that the control unit 21 can controllably enable the corresponding power component(s) 23, with the outputs U, V, W of all the power components 23 connected in parallel together for three phases. In practical application, the control unit 21 can drive the motor 402 to operate through a power component 23; of course, the control unit 21 may be configured to drive the motor 402 through the plurality of power components 23 to operate, for example, when the rated power of the motor control device 401 needs to be increased. In the process that the motor control device 401 drives the motor 402 to operate, when the control unit 21 detects that the power component 23 is a failed power component when the control unit 21 drives the motor 402 to operate through one power component 23, the control unit 21 outputs a first control signal to the first signal switching component 22 to control the first signal switching component 22 to disconnect the corresponding power component 23 from the motor 402, randomly selects one power component 23 from the power components 23 which are not connected with the motor 402 as a new power component to be connected with the motor 402, and simultaneously outputs a second control signal to the second signal switching component 403 to control the second signal switching component 403 to disconnect the corresponding power component 23 from the control unit 21 and randomly select one power component 23 from the power components 23 which are not connected with the motor 402 as a new power component to be connected with the control unit 21, one power component 23 randomly selected by the first signal switching part 22 among the power components 23 not connected to the motor 402 is the same as one power component 23 randomly selected by the second signal switching part 403 among the power components 23 not connected to the motor 402; in the case where the control unit 21 drives the motor 402 to operate through the plurality of power components 23, when the control unit 21 detects that there is at least one faulty power component among the plurality of power components 23, a first control signal is output to the first signal switching component 22 to control the first signal switching component 22 to disconnect the at least one faulty power component from the motor 402, and at least one power component 23 among the power components 23 not connected to the motor 402 is randomly selected as a new power component to be connected to the motor 402, and at the same time, a second control signal is output to the second signal switching component 403 to control the second signal switching component to disconnect the at least one faulty power component from the control unit 21, and at least one power component 403 among the power components 23 not connected to the motor 402 is randomly selected as a new power component to be connected to the control unit 21, at least one power component 23 randomly selected by the first signal switching part 22 among the power components 23 not connected with the motor 402 is the same as at least one power component 23 randomly selected by the second signal switching part 403 among the power components 23 not connected with the motor 402; the number of the failed power components may be the same as or different from the number of the new power components selected by the first signal switching component 22, and may be specifically set by a developer according to design requirements. The embodiment of the invention provides a motor control device, which comprises: a control unit 21, a first signal switching section 22, and N power sections 23; n power components 23 of the N power components 23 are connected to a motor; n is greater than or equal to 2; n is greater than or equal to 1 and N is less than N; wherein the control unit 21 is configured to output a first control signal to the first signal switching unit 22 when detecting that a faulty power component exists in the n power components 23; the first signal switching component is used for responding to the first control signal, disconnecting the fault power component from the motor, and selecting a new power component from the N-N remaining power components 23 to be connected with the motor; therefore, when part of power components in the motor control device are in fault, the normal power components are used for replacing the fault power components to work so as to ensure the normal operation of the motor control device and ensure the stability of a motor control system.
Based on the foregoing embodiment of the motor control apparatus, an embodiment of the present invention further provides a motor control method, which is applied to a control unit of the motor control apparatus in any one of the foregoing embodiments of the motor control apparatus, as shown in fig. 5, where the method includes the following steps:
step 501: the control unit detects that a faulty power component exists among n power components in the motor control device;
step 502: the control unit outputs a first control signal to a first signal switching component of the motor control device so as to control the first signal switching component to disconnect the fault power component from the motor, and selects a new power component from N-N remaining power components to connect with the motor;
here, the motor control device includes N power components; n power components of the N power components are connected with the motor; n is greater than or equal to 2; n is greater than or equal to 1 and N is less than N.
In one embodiment, the number of the control units is N; each of the N control units is connected to one of the N power components; the method may further comprise:
at least one control unit in the N control units detects that a power component connected with the control unit is a fault power component;
at least one control unit in the N control units outputs a first control signal to the first signal switching part to control the first signal switching part to disconnect the connection between the fault power component corresponding to each first control signal in the received at least one first control signal and the motor, and selects at least one of the N-N remaining power components as a new power component to be connected with the motor.
In an embodiment, the method may further include:
the control unit detects that m failed power components exist in the n power components;
the control unit outputs a first control signal to the first signal switching component to control the first signal switching component to disconnect the m fault power components from the motor, and selects m new power components from the N-N residual power components to be connected with the motor; wherein the content of the first and second substances,
m is greater than or equal to 1.
Accordingly, when the control unit detects that there are m failed power components among the n power components, the method may further include:
the control unit outputs a second control signal to a second signal switching component of the motor control device to control the second signal switching component to disconnect the m fault power components from the control unit, and selects m new power components from the N-N remaining power components to connect with the control unit; wherein the content of the first and second substances,
the m new power components selected by the second signal switching section are the same as the m new power components selected by the first signal switching section.
It should be noted that: the motor control method provided by the embodiment of the invention and the motor control device embodiment belong to the same concept, and the specific implementation process is described in the motor control device embodiment and is not described again.
Based on the foregoing motor control apparatus embodiment, and in order to implement the motor control method according to the embodiment of the present invention, an embodiment of the present invention further provides an electronic device, as shown in fig. 6, where the electronic device 600 includes: a motor control device 601 and a motor 602; wherein the content of the first and second substances,
the motor control device 601 is the motor control device according to any one of the above embodiments of the motor control device; the motor control device 601 controls the operation of the motor 602.
The motor control device, the motor control method and the electronic equipment provided by the embodiment of the invention have the following advantages:
when partial power components in the motor control device are in fault, the normal power components are used for replacing the fault power components to work, so that the motor control device is ensured to normally drive the motor, and the stability of a motor control system is ensured.
It should be noted that: "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
In addition, the technical solutions described in the embodiments of the present invention may be arbitrarily combined without conflict.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (10)
1. A motor control apparatus, comprising: a control unit, a first signal switching component and N power components; n power components of the N power components are connected with the motor; n is greater than or equal to 2; n is greater than or equal to 1 and N is less than N; wherein the content of the first and second substances,
the control unit is used for outputting a first control signal to the first signal switching component when detecting that a fault power component exists in the n power components;
and the first signal switching component is used for responding to the first control signal, disconnecting the fault power component from the motor, and selecting a new power component from N-N remaining power components to be connected with the motor.
2. The apparatus of claim 1, wherein the number of control units is N; each of the N control units is connected to one of the N power components; wherein the content of the first and second substances,
when the control unit detects that the power component connected with the control unit is a fault power component, the control unit outputs a first control signal to the first signal switching component;
the first signal switching component responds to the received at least one first control signal, disconnects the fault power component corresponding to each first control signal in the at least one first control signal from the motor, and selects at least one of the N-N remaining power components as a new power component to be connected with the motor.
3. The apparatus according to claim 1, wherein the control unit outputs a first control signal to the first signal switching section when detecting that there are m failed power components among the n power components; m is greater than or equal to 1;
and the first signal switching component responds to the first control signal, disconnects the m fault power components from the motor, and selects m new power components from the N-N residual power components to be connected with the motor.
4. The apparatus of claim 3, further comprising a second signal switching component; wherein the content of the first and second substances,
the control unit is further configured to: when m failed power components are detected to exist in the n power components, outputting a second control signal to the second signal switching component;
the second signal switching component is used for responding to the second control signal, disconnecting the m fault power components from the control unit, and selecting m new power components from the N-N residual power components to be connected with the control unit; wherein the content of the first and second substances,
the m new power components selected by the second signal switching section are the same as the m new power components selected by the first signal switching section.
5. The apparatus of any one of claims 1 to 4, wherein the first signal switching means comprises a plurality of power valves or DC contactors; wherein the content of the first and second substances,
and the power electronic tube or the direct current contactor is used for conducting or disconnecting the connection between the corresponding power component and the motor.
6. The apparatus of claim 4, wherein the second signal switching means comprises a plurality of power valves or DC contactors; wherein the content of the first and second substances,
the power electronic tube or the direct current contactor is used for conducting or disconnecting the connection between the corresponding power component and the control unit.
7. A motor control method is used for a control unit of a motor control device; it is characterized by comprising:
the control unit detects that a faulty power component exists among n power components in the motor control device;
the control unit outputs a first control signal to a first signal switching component of the motor control device so as to control the first signal switching component to disconnect the fault power component from the motor, and selects a new power component from N-N remaining power components to connect with the motor; wherein the content of the first and second substances,
the motor control device comprises N power components; n power components of the N power components are connected with the motor; n is greater than or equal to 2; n is greater than or equal to 1 and N is less than N.
8. The method of claim 7, wherein there are N control units; each of the N control units is connected to one of the N power components; the method further comprises the following steps:
at least one control unit in the N control units detects that a power component connected with the control unit is a fault power component;
at least one control unit in the N control units outputs a first control signal to the first signal switching part to control the first signal switching part to disconnect the connection between the fault power component corresponding to each first control signal in the received at least one first control signal and the motor, and selects at least one of the N-N remaining power components as a new power component to be connected with the motor.
9. The method of claim 7, further comprising:
the control unit detects that m failed power components exist in the n power components;
the control unit outputs a first control signal to the first signal switching component to control the first signal switching component to disconnect the m fault power components from the motor, and selects m new power components from the N-N residual power components to be connected with the motor; wherein the content of the first and second substances,
m is greater than or equal to 1.
10. An electronic device, comprising: a motor and the motor control device of any one of claims 1 to 6; wherein the content of the first and second substances,
the motor control device controls the operation of the motor.
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