CN112242807A - Motor drive control circuit and motor drive control method - Google Patents

Motor drive control circuit and motor drive control method Download PDF

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Publication number
CN112242807A
CN112242807A CN202010908143.8A CN202010908143A CN112242807A CN 112242807 A CN112242807 A CN 112242807A CN 202010908143 A CN202010908143 A CN 202010908143A CN 112242807 A CN112242807 A CN 112242807A
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CN
China
Prior art keywords
circuit
power supply
drive control
electrically connected
motor drive
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Pending
Application number
CN202010908143.8A
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Chinese (zh)
Inventor
钟平
傅雄高
陈力
刘涛
乐建锐
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Shenzhen Tongye Technology Co ltd
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Shenzhen Tongye Technology Co ltd
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Application filed by Shenzhen Tongye Technology Co ltd filed Critical Shenzhen Tongye Technology Co ltd
Priority to CN202010908143.8A priority Critical patent/CN112242807A/en
Publication of CN112242807A publication Critical patent/CN112242807A/en
Pending legal-status Critical Current

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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
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/0004—Control strategies in general, e.g. linear type, e.g. P, PI, PID, using robust control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D27/00—Heating, cooling, ventilating, or air-conditioning
    • B61D27/009—Means for ventilating only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
    • 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

Abstract

The invention discloses a motor drive control circuit and a motor drive control method. The motor drive control circuit includes: a power supply circuit for supplying a first power supply or a second power supply; one end of the control switch circuit is electrically connected with the power supply circuit and is used for controlling the motor drive control circuit to receive the first power supply or the second power supply; the rectifying circuit is electrically connected with one end of the control switch circuit and used for processing the first power supply to generate a first electric signal or processing the second power supply to generate a second electric signal; and the driving control circuit is electrically connected with the other end of the rectifying circuit and is used for controlling the motor to work in a first working state according to the first electric signal or controlling the motor to work in a second working state according to the second electric signal. According to the embodiment of the invention, the working state switching of the motor is integrated with the motor driving, so that the control cost of the system is improved, and the control efficiency of the system is improved.

Description

Motor drive control circuit and motor drive control method
Technical Field
The invention relates to the field of motor drive control, in particular to a motor drive control circuit and a motor drive control method.
Background
Currently, air conditioning ventilation motors are AC powered using asynchronous motor AC, for example, by a three-phase three-wire system AC 380V.
In the related art, in order to adapt to the above power supply method, an emergency ventilation inverter is generally configured in a circuit, and when the circuit fails and cannot output alternating current, the emergency ventilation inverter boosts the DC110V in the circuit power supply, and inverts the boosted voltage into AC220V or AC380V to output the AC so as to meet the emergency ventilation requirement. However, the above control method not only increases the complexity of the control system, but also increases the cost of the control system.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a motor drive control circuit and a motor drive control method, which can reduce the control cost of a system and improve the control efficiency of the system.
In a first aspect, an embodiment of the present invention provides a motor driving end control method for switching an operating state of a motor, including: a power supply circuit for supplying a first power supply or a second power supply; one end of the control switch circuit is electrically connected with the power supply circuit and is used for controlling the motor drive control circuit to receive the first power supply or the second power supply; the rectifying circuit is electrically connected with one end of the control switch circuit and used for processing the first power supply to generate a first electric signal or processing the second power supply to generate a second electric signal; and the driving control circuit is electrically connected with the other end of the rectifying circuit and is used for controlling the motor to work in a first working state according to the first electric signal or controlling the motor to work in a second working state according to the second electric signal.
The motor drive control circuit of the embodiment of the invention at least has the following beneficial effects: the motor driving control function and the emergency ventilation function are combined, the power supply received by the motor driving control circuit is controlled through the control switch circuit, the switching between the first working state and the second working state of the motor is realized, the emergency ventilation function can be realized without an emergency ventilation inverter of the vehicle air conditioning system, the cost of the vehicle air conditioning system is reduced, and the control efficiency of the system is improved.
According to further embodiments of the present invention, an electrode driving control circuit, the power supply circuit includes: a first power supply circuit for providing the first power supply and a second power supply circuit for providing the second power supply; the rectifier circuit includes: the rectifier bridge is at least provided with a first input port, a second input port, a third input port, a first output port and a second output port, and is used for rectifying the first power supply to generate a first electric signal or rectifying the second power supply to generate a third electric signal; the control switch circuit includes: a first control switch circuit and a second control switch circuit; one end of the first control switch circuit is electrically connected with the first power supply circuit, and the other end of the first control switch circuit is electrically connected with the first input port, the second input port and the third input port respectively; one end of the second control switch circuit is electrically connected with the second power supply circuit, and the other end of the second control switch circuit is electrically connected with the first input port and the second input port respectively.
According to other embodiments of the present invention, the electrode driving control circuit further includes: and one end of the booster circuit is electrically connected with the rectifier bridge, and the other end of the booster circuit is electrically connected with the drive control circuit and is used for boosting the third electric signal to generate a second electric signal.
According to further embodiments of the present invention, an electrode driving control circuit, the boosting circuit includes: and the collector electrode of the triode is respectively and electrically connected with the first output port and the drive control circuit, and the emitter electrode of the triode is respectively and electrically connected with the second output port and the drive control circuit.
According to further embodiments of the present invention, the electrode driving control circuit further comprises: and one end of the inductor is electrically connected with the first output port, and the other end of the inductor is electrically connected with a collector of the triode and used for inhibiting ripples of the first electric signal or the third electric signal.
According to further embodiments of the present invention, the electrode driving control circuit further comprises: and the anode of the diode is electrically connected with the collector of the triode, and the cathode of the diode is electrically connected with the drive control circuit.
According to further embodiments of the present invention, an electrode driving control circuit includes: and one end of the inverter circuit is at least provided with a fourth input port and a fifth input port, the fourth input port is electrically connected with the cathode of the diode, the fifth input port is electrically connected with the emitting electrode of the triode, and the other end of the inverter circuit is electrically connected with the motor.
In a second aspect, an embodiment of the present invention provides a motor driving control method, applied to the motor driving control circuit described in any embodiment of the first aspect, including obtaining a second operating state request; and controlling the connection state of the control switch circuit according to the request result so as to control the motor drive control circuit to receive the first power supply or the second power supply.
According to another embodiment of the motor driving control method, controlling the connection state of the control switch according to the request result so that the motor driving control circuit receives the first power supply or the second power supply specifically includes: and if the request result is invalid, controlling the first control switch circuit to be closed and controlling the second control switch circuit to be opened so that the motor drive control circuit receives the first power supply and the motor works in a first working state.
According to another embodiment of the motor driving control method, controlling the connection state of the control switch according to the request result so that the motor driving control circuit receives the first power supply or the second power supply specifically includes: and if the request result is valid, controlling the first control switch circuit to be switched off and controlling the second control switch circuit to be switched on so that the motor drive control circuit receives the second power supply and the motor works in a second working state.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
FIG. 1 is a block diagram of a motor drive control circuit according to an embodiment of the present invention;
FIG. 2 is a circuit schematic of an embodiment of a motor drive control circuit in accordance with embodiments of the present invention;
FIG. 3 is a flow chart illustrating a method for controlling a motor driving according to an embodiment of the present invention;
fig. 4 is a schematic flow chart of another embodiment of a motor driving control method according to an embodiment of the present invention.
Reference numerals:
the power supply circuit 100, the first power supply circuit 110, the second power supply circuit 120, the control switch circuit 200, the first control switch circuit 210, the second control switch circuit 220, the rectifier circuit 300, the rectifier bridge 310, the booster circuit 320, the drive control circuit 400, and the inverter circuit 410.
Detailed Description
The concept and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.
In the description of the embodiments of the present invention, if "a number" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than" or "more than" is referred to, it is understood that the number is not included, and if "greater than", "lower" or "inner" is referred to, it is understood that the number is included. If reference is made to "first" or "second", this should be understood to distinguish between features and not to indicate or imply relative importance or to implicitly indicate the number of indicated features or to implicitly indicate the precedence of the indicated features.
In the following embodiments, a motor is used as a driving source of an air conditioner, and a motor drive control circuit is used to control driving of the motor, and in the present application, a vehicle air conditioning system in rail transit is taken as an example for explanation, for example: rail transit such as high-speed rail, motor train, subway, rail motor train. However, it should be understood that other situations requiring the switching control of the operating state of the motor are all within the scope of the present application.
In a first aspect, the present application provides a motor driving control circuit for switching an operating state of a motor.
Referring to fig. 1, in some embodiments, a motor drive control circuit includes: a power supply circuit 100, a control switch circuit 200, a rectifier circuit 300, and a drive control circuit. The power supply circuit 100 is used for providing a first power supply or a second power supply; one end of the control switch circuit 200 is electrically connected to the power circuit 100 for controlling the motor driving control circuit to receive the first power or the second power; one end of the rectifier circuit 300 is electrically connected to the other end of the control switch circuit 200, and is configured to process a first power supply to generate a first electrical signal, or process a second power supply to generate a second electrical signal; the driving control circuit 400 is electrically connected to the other end of the rectifying circuit 300, and is configured to control the motor to operate in a first operating state according to a first electrical signal, or to control the motor to operate in a second operating state according to a second electrical signal.
Specifically, the motor adopts a permanent magnet synchronous motor, and the permanent magnet synchronous motor has the advantages of high efficiency, light weight, small volume, intellectualization and the like compared with an asynchronous motor. The drive control circuit 400 is connected to the motor for controlling the driving of the motor. In some embodiments, the first operating state is a normal operating state and the second operating state is an emergency ventilation state, and accordingly, the first power source is AC380V and the second power source is DC 110V. Under normal conditions, the control switch circuit 200 controls the motor driving control circuit to receive the first power supply, the rectifying circuit 300 processes the first power supply to generate a first electric signal, and the driving control circuit controls the motor to work in a first working state according to the first electric signal, so that the air conditioner performs normal ventilation. When a fault occurs, the control switch circuit 200 controls the motor drive control circuit to receive the second power supply, the rectifier circuit 300 processes the second power supply to generate a second electric signal, and the drive control circuit 400 controls the motor to work in a second working state according to the second electric signal to enable the air conditioner to perform emergency ventilation, so that the emergency ventilation function is realized. It can be understood that the specific power supply sizes of the first power supply and the second power supply can be adaptively adjusted according to actual situations, and in the case of implementing the above functions, the types of the motors can also be adjusted according to actual needs.
In the embodiment of the application, the motor driving control function and the emergency ventilation function are combined, and the control switch circuit 200 is used for controlling the power supply received by the motor driving control circuit, so that the switching between the first working state and the second working state of the motor is realized, the emergency ventilation function can be realized without an emergency ventilation inverter of the vehicle air conditioning system, the cost of the vehicle air conditioning system is reduced, and the control efficiency of the system is improved.
Referring to fig. 2, in some embodiments, power supply circuit 100 includes: a first power circuit 110 and a second power circuit 120, the first power circuit 110 being for providing a first power and the second power circuit 120 being for providing a second power. The rectifier circuit 300 includes: the rectifier bridge 310 is at least provided with a first input port, a second input port, a third input port, a first output port and a second output port, and is used for rectifying the first electric signal to generate a first electric signal or rectifying the second power supply to generate a third electric signal; the control switch circuit 200 includes: a first control switch circuit 210 and a second control switch circuit 220. One end of the first control switch circuit 210 is electrically connected to the first power supply circuit 110, and the other end of the first control switch circuit 210 is electrically connected to the first input port, the second input port, and the third input port, respectively. One end of the second control switch circuit 220 is electrically connected to the second power supply circuit 120, and the other end of the second control switch circuit 220 is electrically connected to the first input port and the second input port, respectively. Specifically, the first power source is a three-phase AC380V power source, the second power source is a DC110V power source, and correspondingly, the rectifier bridge 310 is a three-phase rectifier bridge. Under normal conditions, the external device controls the switch group K1 to be closed and the switch group K2 to be opened, so that the motor driving control circuit operates by using the first power supply. When the emergency ventilation is needed due to the fault, the external equipment controls the switch group K1 to be disconnected and the switch group K2 to be closed, so that the motor drive control circuit operates by using the second power supply, and the switching function of the power supply is realized. When the power driving control circuit receives a first power, the rectifier bridge 310 rectifies the first power to generate a first electrical signal, and the driving control circuit 400 controls the motor to operate in a first operating state according to the first electrical signal; when the power driving control circuit receives the second power, the rectifier bridge 310 rectifies the second power to generate a third electrical signal.
In some embodiments, the rectifier circuit 300 further comprises: a boost circuit 320. One end of the booster circuit 320 is electrically connected to the rectifier bridge 310, the other end of the booster circuit 320 is electrically connected to the drive control circuit 400, and the booster circuit 320 is configured to boost the third electrical signal to generate the second electrical signal. Specifically, when the motor drive control circuit receives the first power supply, the voltage boost circuit 320 does not operate, the rectifier bridge 310 generates the first electric signal after performing rectification processing on the AC380V, and the drive control circuit 400 performs drive control on the motor according to the first electric signal. When the motor drive control circuit receives the second power supply, the rectifier bridge 310 rectifies the DC110V to generate a third electrical signal, and the voltage boost circuit 320 boosts the third electrical signal to generate a second electrical signal, so that the drive control circuit 400 controls the motor to operate in the second operating state according to the second electrical signal. The embodiment of the application integrates the motor drive control and the emergency ventilation boosting function, and the control cost of the vehicle air conditioning system is reduced.
Referring to fig. 2, in some embodiments, boost circuit 320 includes: and a triode Q1, wherein the collector of the triode Q1 is electrically connected with the first output port and the drive control circuit 400 respectively, and the emitter of the triode Q1 is electrically connected with the second output port and the drive control circuit 400 respectively. Specifically, the triode Q1 is used as a Boost switching tube of the Boost circuit, a collector of the triode Q1 is electrically connected with a first output port of the rectifier bridge 310 and the drive control circuit 400, an emitter of the triode Q1 is electrically connected with a second output port of the rectifier bridge 310 and the drive control circuit, a base of the triode Q1 is electrically connected with an output end of an isolation drive optocoupler, and a conduction state of the optocoupler is controlled by the MCU. In a specific embodiment, when the motor driving control circuit receives the first power, the MCU controls the optocoupler to be turned off, and the transistor Q1 is in an off state, the voltage boost circuit 320 does not operate, and the driving control circuit 400 controls the motor to operate in the first operating state according to the first electrical signal. When the motor driving control circuit receives a second power supply, the MCU controls the optocoupler to be conducted, at the moment, the triode Q1 works in a high-frequency switching state, the boosting circuit 320 boosts the third electric signal and boosts the DC110V to a voltage range from 300V to 350V to generate a second electric signal, and the driving control circuit 400 controls the motor to work in a second working state, namely an emergency ventilation state, according to the second electric signal.
In some embodiments, the boost circuit 320 further includes: and one end of the inductor L1, one end of the inductor L1 is electrically connected with the first output port, and the other end of the inductor L1 is electrically connected with the collector of the triode Q1, so that ripples of the first electric signal or the third electric signal are suppressed. Specifically, when the motor drive control circuit receives the first power supply, the inductance L1 functions as a smoothing reactor for suppressing ripples in the first electric signal. When the motor drive control circuit receives the second power supply, the inductor L1 also serves as a boost inductor, and performs boost processing on the third electrical signal together with the transistor Q1.
In some embodiments, the boost circuit 320 further includes: the diode D1 has a positive electrode of the diode D1 electrically connected to the collector of the transistor Q1, and a negative electrode of the diode D1 electrically connected to the driving control circuit 400. Specifically, the other end of the inductor L1 is electrically connected to the anode of the diode D1, and the collector of the transistor Q1 is electrically connected to the connection node between the inductor L1 and the diode D1. The diode D1 is used as an isolation diode of the boost circuit 320 to isolate the conduction of the reverse voltage.
In some embodiments, the drive control circuit 400 includes: the inverter circuit 410. One end of the inverter circuit 410 is at least provided with a fourth input port and a fifth input port, the fourth input port is electrically connected with the cathode of the diode D1, the fifth input port is electrically connected with the emitter of the triode Q1, and the other end of the inverter circuit 410 is electrically connected with the motor. Specifically, the inverter circuit 410 is a three-phase inverter circuit electrically connected to the motor. When the power driving circuit receives a first power, the first electrical signal is converted into a stable dc voltage through the inductor in the inverter circuit 410, and the inverter circuit 410 outputs a three-phase UVW to drive the motor to operate in a first operating state, at this time, the transistor Q1 is in a cut-off state, and the inductor L1 and the capacitor in the inverter circuit 410 are also used for LC filtering. When the power supply driving circuit receives a second power supply, the triode Q1 is in a conducting state, the second power supply is converted into a direct-current voltage second electric signal through chopping and boosting processing, and the inverter circuit 410 outputs a three-phase UVW to drive the motor to work in a second working state, so that the motor can reach a rotating speed in an emergency ventilation state, and an emergency ventilation function is achieved.
In a specific embodiment, when in the normal operation state, the external device controls the first control switch circuit 210 to be closed and controls the second control switch circuit 220 to be opened, so as to control the motor driving control circuit to receive the first power. At this time, the MCU controls the disconnection of the triode Q1, the first power source generates a first electrical signal through the three-phase rectifier bridge 310, and the three-phase inverter circuit 410 performs an inversion process on the first electrical signal, so that the three-phase inverter circuit 410 controls the motor to operate in the first operating state according to the first electrical signal. When a fault occurs, the external device controls the first control switch circuit 210 to be turned off and controls the second control switch circuit 220 to be turned on to control the motor driving control circuit to receive the second power. At this time, the MCU controls the transistor Q1 to be turned on, the first power source generates a third electrical signal through the three-phase rectifier bridge 310, the boost circuit 320 boosts the third electrical signal to generate a second electrical signal, and the three-phase inverter circuit 410 inverts the second electrical signal, so that the three-phase inverter circuit 410 controls the motor to operate in the second operating state according to the second electrical signal.
In a second aspect, embodiments of the present application provide a motor drive control method, which is applied to the motor drive control circuit described in any embodiment of the first aspect.
Referring to fig. 3, in some embodiments, a motor drive control method includes the steps of: s100, acquiring a second working state request; and S200, controlling the connection state of the control switch circuit according to the request result so as to control the motor drive control circuit to receive the first power supply or the second power supply.
In step S100, a specific embodiment of obtaining the second working state request is as follows: the vehicle air conditioning system may obtain the request for the second state in real time, or obtain the second work request according to a certain time interval according to an obtaining rule. Specifically, step S300 is further included before step S100 is executed: and controlling the motor drive control circuit to enter a standby state so as to improve the drive efficiency of the motor drive control circuit. It is understood that the second operation state request may be transmitted by the MCU or by other external devices, and the embodiment of the present application is not particularly limited.
Step S200, controlling the connection state of the control switch circuit according to the request result, and controlling the motor driving control circuit to receive the first power supply or the second power supply according to a specific embodiment of: controlling a motor driving control circuit to receive a first power supply according to a request result so as to enable the motor to work in a first working state; or according to the request result, controlling the motor drive control circuit to receive the second power supply so as to enable the motor to work in the second working state. Specifically, the request result of the second working state is obtained according to the 485 communication condition and/or the first power supply bus voltage sampling condition. When the 485 communication is normal and/or the voltage of the first power supply bus is within a preset threshold range, the request result is considered to be invalid, namely the system is in a normal working state at the moment. And when the 485 communication is abnormal and/or the voltage of the first power supply bus is not in the range of the preset threshold value, the request result is considered to be valid, namely the system is in a fault state at the moment. In some embodiments, step S200 comprises: s210, judging whether the second working state request is effective or not; s220, if the request result is invalid, controlling the first control switch circuit to be closed and controlling the second control switch circuit to be opened so that the motor drive control circuit receives the first power supply and the motor works in a first working state; and S230, if the request result is valid, controlling the first control switch circuit to be switched off, and controlling the second control switch circuit to be switched on, so that the motor drive control circuit receives the second power supply, and the motor works in a second working state.
In step S220, if the request result is invalid, the first control switch circuit is controlled to be closed, and the second control switch circuit is controlled to be opened, so that the motor driving control circuit receives the first power supply, and a specific embodiment of the motor operating in the first operating state is as follows: when the result of the second working state request is invalid, the system is considered to be in a normal working state at the moment, the first control switch circuit is controlled to be closed, the second control switch circuit is controlled to be opened, and the MCU controls the triode Q1 to be cut off, so that the motor drive control circuit receives the first power supply and the motor works in the first working state according to the first electric signal. Specifically, before executing step S220, the method further includes step S600: whether the first power supply is normal is detected. When the first power supply is normal, executing step S220; and when the first power supply is abnormal, judging the second working state request again. It can be understood that whether the first power supply is normal or not is detected by determining whether the first power supply is out of phase and/or whether the first power supply is stable.
Step S230, if the request result is valid, controlling the first control switch circuit to be turned off, and controlling the second control switch circuit to be turned on, so that the motor driving control circuit receives the second power supply, and a specific embodiment of the motor operating in the second operating state is as follows: when the request result of the second working state request is valid, the system is considered to be in a fault state at the moment, the first control switch circuit is controlled to be switched off, the second control switch circuit is controlled to be switched on, and the MCU controls the triode Q1 to be switched on, so that the motor drive control circuit receives the first power supply, and the motor works in the second working state according to the second electric signal. Specifically, before executing step S230, step S500 is further included: and detecting whether the second power supply is normal. When the second power supply is normal, step S230 is executed; and when the second power supply is abnormal, judging the second working state request again. It can be understood that whether the second power supply is normal or not is detected by judging whether the second power supply is out of phase and/or whether the first power supply is stable or not.
According to the embodiment of the application, whether the second working state is effective or not is judged, the motor drive control circuit is controlled to receive the first power supply or the second power supply, so that the switching of the working states of the motors is realized, the control cost of the system is reduced, the control efficiency of the system is improved, the motor drive control circuit can respond timely when the system breaks down, and the control system enters the emergency ventilation state.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

Claims (10)

1. Motor drive control circuit for switching the operating condition of motor, its characterized in that includes:
a power supply circuit for supplying a first power supply or a second power supply;
one end of the control switch circuit is electrically connected with the power supply circuit and is used for controlling the motor drive control circuit to receive the first power supply or the second power supply;
the rectifying circuit is electrically connected with one end of the control switch circuit and used for processing the first power supply to generate a first electric signal or processing the second power supply to generate a second electric signal;
and the driving control circuit is electrically connected with the other end of the rectifying circuit and is used for controlling the motor to work in a first working state according to the first electric signal or controlling the motor to work in a second working state according to the second electric signal.
2. The motor drive control circuit according to claim 1, wherein the power supply circuit comprises: a first power supply circuit for providing the first power supply and a second power supply circuit for providing the second power supply;
the rectifier circuit includes: the rectifier bridge is at least provided with a first input port, a second input port, a third input port, a first output port and a second output port, and is used for rectifying the first power supply to generate a first electric signal or rectifying the second power supply to generate a third electric signal;
the control switch circuit includes: a first control switch circuit and a second control switch circuit; one end of the first control switch circuit is electrically connected with the first power supply circuit, and the other end of the first control switch circuit is electrically connected with the first input port, the second input port and the third input port respectively;
one end of the second control switch circuit is electrically connected with the second power supply circuit, and the other end of the second control switch circuit is electrically connected with the first input port and the second input port respectively.
3. The motor drive control circuit according to claim 2, wherein the rectifier circuit further comprises:
and one end of the booster circuit is electrically connected with the rectifier bridge, and the other end of the booster circuit is electrically connected with the drive control circuit and is used for boosting the third electric signal to generate a second electric signal.
4. The motor drive control circuit according to claim 3, wherein the voltage boost circuit comprises:
and the collector electrode of the triode is respectively and electrically connected with the first output port and the drive control circuit, and the emitter electrode of the triode is respectively and electrically connected with the second output port and the drive control circuit.
5. The motor drive control circuit according to claim 4, wherein the voltage boost circuit further comprises:
and one end of the inductor is electrically connected with the first output port, and the other end of the inductor is electrically connected with a collector of the triode and used for inhibiting ripples of the first electric signal or the third electric signal.
6. The motor drive control circuit according to claim 4, wherein the voltage boost circuit further comprises:
and the anode of the diode is electrically connected with the collector of the triode, and the cathode of the diode is electrically connected with the drive control circuit.
7. The motor drive control circuit according to claim 6, wherein the drive control circuit comprises:
and one end of the inverter circuit is at least provided with a fourth input port and a fifth input port, the fourth input port is electrically connected with the cathode of the diode, the fifth input port is electrically connected with the emitting electrode of the triode, and the other end of the inverter circuit is electrically connected with the motor.
8. A motor drive control method applied to the motor drive control circuit according to any one of claims 1 to 7, characterized by comprising:
acquiring a second working state request;
and controlling the connection state of the control switch circuit according to the request result so as to control the motor drive control circuit to receive the first power supply or the second power supply.
9. The motor drive control method according to claim 8, wherein the controlling the connection state of the control switch according to the request result so that the motor drive control circuit receives the first power supply or the second power supply specifically comprises:
and if the request result is invalid, controlling the first control switch circuit to be closed and controlling the second control switch circuit to be opened so that the motor drive control circuit receives the first power supply and the motor works in a first working state.
10. The motor drive control method according to claim 8, wherein the controlling the connection state of the control switch according to the request result so that the motor drive control circuit receives the first power supply or the second power supply specifically comprises:
and if the request result is valid, controlling the first control switch circuit to be switched off and controlling the second control switch circuit to be switched on so that the motor drive control circuit receives the second power supply and the motor works in a second working state.
CN202010908143.8A 2020-09-02 2020-09-02 Motor drive control circuit and motor drive control method Pending CN112242807A (en)

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Application Number Priority Date Filing Date Title
CN202010908143.8A CN112242807A (en) 2020-09-02 2020-09-02 Motor drive control circuit and motor drive control method

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Application Number Priority Date Filing Date Title
CN202010908143.8A CN112242807A (en) 2020-09-02 2020-09-02 Motor drive control circuit and motor drive control method

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5058710A (en) * 1990-08-14 1991-10-22 Otis Elevator Company Elevator power source device
JPH115676A (en) * 1997-06-13 1999-01-12 Hitachi Building Syst Co Ltd Automatic landing device in power service interruption to elevator
US6732838B1 (en) * 1999-11-17 2004-05-11 Fujitec Co., Ltd. Power supply for ac elevator
JP2012143056A (en) * 2010-12-28 2012-07-26 Fuji Electric Co Ltd Power supply device for elevator
JP2013046539A (en) * 2011-08-26 2013-03-04 Panasonic Corp Inverter control circuit for driving motor, and vacuum cleaner using the same
US20150142204A1 (en) * 2012-08-01 2015-05-21 Huawei Technologies Co., Ltd. Temperature Control Equipment and Communication Equipment Cabinet
CN110641283A (en) * 2018-06-11 2020-01-03 三菱电机株式会社 Power control device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5058710A (en) * 1990-08-14 1991-10-22 Otis Elevator Company Elevator power source device
JPH115676A (en) * 1997-06-13 1999-01-12 Hitachi Building Syst Co Ltd Automatic landing device in power service interruption to elevator
US6732838B1 (en) * 1999-11-17 2004-05-11 Fujitec Co., Ltd. Power supply for ac elevator
JP2012143056A (en) * 2010-12-28 2012-07-26 Fuji Electric Co Ltd Power supply device for elevator
JP2013046539A (en) * 2011-08-26 2013-03-04 Panasonic Corp Inverter control circuit for driving motor, and vacuum cleaner using the same
US20150142204A1 (en) * 2012-08-01 2015-05-21 Huawei Technologies Co., Ltd. Temperature Control Equipment and Communication Equipment Cabinet
CN110641283A (en) * 2018-06-11 2020-01-03 三菱电机株式会社 Power control device

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Application publication date: 20210119