CN210273878U - Control device for high-power motor control mechanism - Google Patents
Control device for high-power motor control mechanism Download PDFInfo
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- CN210273878U CN210273878U CN201921531774.1U CN201921531774U CN210273878U CN 210273878 U CN210273878 U CN 210273878U CN 201921531774 U CN201921531774 U CN 201921531774U CN 210273878 U CN210273878 U CN 210273878U
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Abstract
The utility model provides a high-power motor operating mechanism controlling means relates to the electrical automation control technology field. The device comprises a rectifying unit, a voltage stabilizing capacitor, a buck-boost converter, an energy storage device, a signal acquisition unit, a signal processing unit, an inverter, a main controller, a current conditioning circuit, a position signal conditioning circuit, a capacitor voltage detection unit, an upper computer, a PWM isolation driving unit and a low-voltage direct-current power supply. The upper computer sends different control instructions to the main controller when the breaker is in an open-close short-circuit current, a rated current and a no-load working condition, the main controller sends the instructions to the buck-boost converter and the inverter, the buck-boost converter provides different voltage values for the energy storage device, and the motor operating mechanism moves according to a preset moving contact ideal stroke speed curve. The utility model discloses the device has effectively reduced the rigid collision between moving contact and the static contact, has improved high voltage circuit breaker motor operating mechanism's reliability.
Description
Technical Field
The utility model relates to an electrical automation control technical field especially relates to a high-power motor operating mechanism controlling means.
Background
With the deep development of the intelligent power grid technology in China, the power system puts higher requirements on the reliability and the intelligent operation level of high-voltage electrical equipment. As an important switchgear in a power system, a high voltage circuit breaker is responsible for the dual tasks of protecting and controlling a circuit, and the performance of the high voltage circuit breaker is one of important factors for determining whether the power system can be safely operated. The traditional operating mechanism has the defects of high complexity, poor controllability of a moving contact, easiness in impact on parts, limited state detection range and the like, is difficult to realize high-efficiency and reliable switching-off or switching-on of the circuit breaker, cannot realize high-precision position control of the moving arc contact in the circuit breaker, and can only control switching-off or switching-on motion at a single speed motion characteristic under different working conditions such as switching-off short-circuit current, rated current, no-load operation and the like. The high-voltage circuit breaker has different ideal opening and closing curves under different working conditions, so that a proper control mode of the motor operating mechanism is selected, data intercommunication between an upper computer and a lower computer is realized, and meanwhile, an energy storage system of the motor operating mechanism has energy requirements under different control requirements. Therefore, it is necessary to research a control device for a high-power motor control mechanism, so as to realize the accurate control of the circuit breaker on the travel and speed motion curve of the moving contact of the circuit breaker under different working conditions.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is not enough to above-mentioned prior art, provide a high-power motor operating mechanism controlling means, realize the circuit breaker to circuit breaker moving contact stroke and velocity motion curve's accurate control under different work condition.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is: a control device for a high-power motor control mechanism comprises a rectifying unit, a voltage stabilizing capacitor, a buck-boost converter, an energy storage device, a signal acquisition unit, a signal processing unit, an inverter, a main controller, a current conditioning circuit, a position signal conditioning circuit, a capacitance voltage detection unit, an upper computer, a PWM isolation driving unit and a low-voltage direct-current power supply;
the input end of the rectifying unit is connected with commercial power, the output end of the rectifying unit is connected with a voltage stabilizing capacitor, the output end of the voltage stabilizing capacitor is connected with a buck-boost converter, the output end of the buck-boost converter is connected with an energy storage device, the output end of the energy storage device is connected with a capacitor voltage detection unit and an inverter, the output end of the inverter is connected with a three-phase winding of a permanent magnet synchronous motor, and the capacitor voltage detection unit is connected with; the input end of the signal acquisition unit is connected with the permanent magnet synchronous motor, and the acquired signal is output to the main controller after passing through the current conditioning circuit and the position signal conditioning circuit; the upper computer is connected with the main controller through the communication interface, the PWM output end of the main controller is connected with the input end of the PWM isolation driving unit, the output end of the PWM isolation driving unit is connected with the gate input end of the IGBT of the inverter and the gate input end of the IGBT of the buck-boost converter, and the low-voltage direct-current power supply is connected with the power supply end of the PWM isolation driving unit, the signal acquisition unit, the capacitance voltage detection unit and the power supply end of the main controller to supply power for the whole device.
Preferably, the signal acquisition unit comprises three hall current sensors for acquiring three-phase winding current of the permanent magnet synchronous motor, a rotary transformer for acquiring the position of a rotor of the permanent magnet brushless direct current motor, and a capacitor voltage detection unit for acquiring the voltage value of the energy storage device;
three Hall current sensors of the signal acquisition unit penetrate through a three-phase winding of the permanent magnet synchronous motor, output ends of the three Hall current sensors are connected into a current conditioning circuit, an output end of the current conditioning circuit is connected to an AD (analog-to-digital) port of a main controller, an input end of a rotary transformer is connected to the side of a rotor spindle of a motor operating mechanism of the high-voltage circuit breaker, an output end of the rotary transformer is connected into a position signal conditioning circuit, and an output end of the position signal conditioning circuit is connected to an IO port of the main controller.
Preferably, the main controller adopts a DSP chip.
Preferably, the communication interface circuit comprises a first RS232 serial port of the upper computer, a first MAX3232 chip and a first controller interface, and the communication between the upper computer and the main controller is realized through serial port communication to perform man-machine interaction.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the utility model provides a control device of a high-power motor control mechanism,
(1) the permanent magnet synchronous motor operating mechanism of the utility model has simple mechanical structure, few parts, no need of traditional tripping and locking devices, and small dispersion of the operation of opening or closing the brake;
(2) the utility model discloses the lift voltage converter of device can provide different voltages for energy memory, accomplishes under the different work condition, and main control unit is to energy memory's energy demand. And the reasonable design of the buck-boost conversion circuit ensures that the stress of the switching element is small, the loss is small and the charging efficiency is high.
(3) The utility model discloses the PMSM of device adopts the space vector control strategy, and the torque ripple is little, and control accuracy is high, when adopting the control of maximum torque current ratio simultaneously, can effectively reduce stator copper and consume, accords with the theory that green hangs down the emission.
(4) The utility model discloses the RS232 communication of device design realizes the two CPU communications between DSP controller and the host computer, realizes the change to DSP internal parameter.
(5) The utility model discloses the device can be at electric power system short-circuit current that breaks down, rated current, under the no-load operating mode, the host computer provides corresponding control command, make high voltage circuit breaker motor operating mechanism moving contact according to given different ideal motion stroke and speed curvilinear motion, response time and circuit breaker divide-shut brake action time when both can reducing the motor start, can reduce the last contact velocity of motion of divide-shut brake again, and then reduce the motion, the rigid collision of static contact, avoid appearing contact combined floodgate bounce phenomenon, high voltage circuit breaker motor operating mechanism action reliability has been improved, the extension mechanism life.
Drawings
Fig. 1 is a block diagram of a control device of a high-power motor control mechanism according to an embodiment of the present invention;
fig. 2 is a circuit connection diagram of a control device of a high-power motor control mechanism according to an embodiment of the present invention;
fig. 3 is a circuit connection diagram of a rectifying unit according to an embodiment of the present invention;
fig. 4 is a circuit connection diagram of a buck-boost converter according to an embodiment of the present invention;
fig. 5 is a circuit connection diagram of a communication interface according to an embodiment of the present invention;
fig. 6 is a connection diagram of a current conditioning circuit according to an embodiment of the present invention;
fig. 7 is a schematic circuit diagram of a PWM isolation driving unit according to an embodiment of the present invention;
fig. 8 is a schematic circuit diagram of a voltage capacitance detection unit according to an embodiment of the present invention;
fig. 9 is a wiring diagram of a low-voltage dc power supply according to an embodiment of the present invention;
fig. 10 is a pin diagram of a DSP processor according to an embodiment of the present invention;
fig. 11 is a circuit diagram of a position signal conditioning circuit according to an embodiment of the present invention;
fig. 12 is a flowchart of a control method for a high-power motor operating mechanism according to an embodiment of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In this embodiment, a control device for a high-power motor control mechanism, as shown in fig. 1, includes a rectifying unit, a voltage stabilizing capacitor, a buck-boost converter, an energy storage device, a signal acquisition unit, a signal processing unit, an inverter, a main controller, a current conditioning circuit, a position signal conditioning circuit, a capacitance voltage detection unit, an upper computer, a PWM (Pulse Width Modulation) isolation driving unit, and a low-voltage dc power supply;
in this embodiment, the circuit connection relationship of the control device of the high-power motor control mechanism of the utility model is as shown in fig. 2, the input end of the rectifying unit is connected to the commercial power, the output end of the rectifying unit is connected to the voltage stabilizing capacitor, the output end of the voltage stabilizing capacitor is connected to the buck-boost converter, the output end of the buck-boost converter is connected to the energy storage device, the output end of the energy storage device is connected to the capacitance voltage detection unit and the inverter, the output end of the inverter is connected to the three-phase winding of the permanent magnet synchronous; the input end of the signal acquisition unit is connected with the permanent magnet synchronous motor, and the acquired signal is output to the main controller after passing through the current conditioning circuit and the position signal conditioning circuit; the upper computer passes through communication interface and main control unit, and the input of PWM isolation drive unit is connected to main control unit's PWM output, and inverter IGBT gate input and buck-boost converter IGBT gate input are connected to PWM isolation drive unit output, and low-voltage DC power supply inserts PWM isolation drive unit power end, letter acquisition unit, capacitance voltage detection unit and main control unit power end, supplies power for whole device.
The signal acquisition unit comprises three Hall current sensors for acquiring the current of a three-phase winding of the permanent magnet synchronous motor, a rotary transformer for acquiring the position of a rotor of the permanent magnet brushless direct current motor and a capacitor voltage detection unit for acquiring the voltage value of the energy storage device;
three Hall current sensors of the signal acquisition unit penetrate through a three-phase winding of the permanent magnet synchronous motor, output ends of the three Hall current sensors are connected into a current conditioning circuit, an output end of the current conditioning circuit is connected to an AD (analog-to-digital) port of a main controller, an input end of a rotary transformer is connected to the side of a rotor spindle of a motor operating mechanism of the high-voltage circuit breaker, an output end of the rotary transformer is connected into a position signal conditioning circuit, and an output end of the position signal conditioning circuit is connected to an IO port of the main controller.
The main controller adopts a DSP chip, a PWM 1-output pin of the DSP chip is connected to a Vi1 input pin of a PWM isolation driving unit, a PWM2 output pin is connected to a Vi2 input pin of the PWM isolation driving unit, a PWM3 output pin is connected to a Vi3 input pin of the PWM isolation driving unit, a PWM4 output pin is connected to a Vi4 input pin of the PWM isolation driving unit, a PWM5 output pin is connected to a Vi5 input pin of the PWM isolation driving unit, a PWM6 output pin is connected to a Vi6 input pin of the PWM isolation driving unit, a PWM7 output pin is connected to a Vi7 input pin of the PWM isolation driving unit, and a PWM8 pin is connected to a Vi8 of the PWM isolator driving. An output1 output pin of the PWM isolation driving unit is connected to a V1 pin of the inverter, an output2 output pin is connected to a V2 pin of the inverter, an output3 output pin is connected to a V3 pin of the inverter, an output4 output pin is connected to a V4 pin of the inverter, an output5 output pin is connected to a V5 pin of the inverter, an output6 output pin is connected to a V6 pin of the inverter, an output7 output pin is connected to a V7 pin of the buck-boost converter, and an output8 output pin is connected to a V8 pin of the buck-boost converter.
The rectifier is shown in fig. 3, and comprises a first rectifying diode D1, a second rectifying diode D2, a third rectifying diode D3, and a fourth rectifying diode D4; the mains output is connected to the cathode of the first rectifier diode D1, the anode of the third rectifier diode D3, and the other mains output is connected to the cathode of the second rectifier diode D2, the anode of the fourth rectifier diode D4. The cathode of the third rectifying diode D3 and the cathode of the fourth rectifying diode D4 are connected to the anode of the voltage stabilizing capacitor C1. The anode of the first rectifying diode D1 and the anode of the second rectifying diode D2 are connected to the cathode of the voltage stabilizing capacitor C1. The mains supply is rectified by the rectifier and then supplied to the buck-boost converter through the voltage stabilizing capacitor C1. In the present embodiment, a rectifier bridge of type 6RI100G-160 is selected.
As shown in fig. 4, the buck-boost converter includes a first inductor L1, a second inductor L2, a first IGBT switch T1, a second IGBT switch T2, a first diode DT1, a second diode DT2, a first energy-storage capacitor C0, and a second energy-storage capacitor C2; the output end of a voltage stabilizing capacitor C1 is connected to one end of an inductor L1, the other end of the inductor L1 is connected to the collector of T1 and the anode of a diode DT1, one end of the anode of the diode DT1 is connected to the anode of a capacitor C0 and the collector of T2, one end of the emitter of T2 is connected to the cathode of the diode DT2 and one end of an inductor L2, the other end of the inductor L2 is connected to the anode of an energy storage capacitor C2, the cathode of an energy storage capacitor C2 is connected to the cathode of a voltage stabilizing capacitor C1, the anode of the diode DT2 is connected to the cathode of the voltage stabilizing capacitor C1, the cathode of the capacitor C0 is connected to the cathode of the voltage stabilizing capacitor C1, and the emitter of a switch T1 is connected. When the buck-boost converter performs boost operation, the switch T2 is completely turned on, the switch T1 is in a working state, and when the buck-boost converter performs buck operation, the switch T1 is completely turned off, and the switch T2 is in a working state.
The communication interface circuit is shown in fig. 5 and comprises a first RS232 serial port of the upper computer, a first MAX3232 chip and a first controller interface, and the communication between the upper computer and the main controller can be realized through serial port communication to carry out human-computer interaction.
Current conditioning circuits as shown in fig. 6, each current conditioning circuit includes two operational amplifiers, and the two operational amplifiers are connected in series. The current conditioning circuit converts signals collected by the Hall current sensor into signals which can be identified by the DSP chip within a 0-3.3V range, in the embodiment, the model of two operational amplifiers of the current conditioning circuit is 0P284, a pin 0 of the current conditioning circuit is connected with a pin 2 of the Hall current sensor, pins 1 of three coil current detection circuits are respectively connected with pins ADCINB0, ADCINB1 and ADCINB2 of the DSP chip, a pin 8 of the current conditioning circuit is connected with a pin +15V of the DC power supply module, and a pin 4 of the coil current detection circuit is connected with a pin-15V of the DC power supply module.
In this embodiment, the PWM isolation driving unit employs a 6-unit IGBT driving board DA962D6 and a 2-unit IGBT driving board DA962D2 as shown in fig. 7, the +15V voltage of the driving circuit is supplied by the low-voltage dc power supply, the GND pin of the driving circuit is grounded, the VCC pin of the driving circuit is connected to the +15V pin of the low-voltage dc power supply, the ePWM 1-8 pins of the driving circuit are connected to the PWM 1-8 pins of the DSP processor, the output 1-6 pins of the driving circuit are connected to the V1-V6 pins of the inverter IGBT, and the output 7-8 pins of the driving circuit are connected to the V7-V8 pins of the buck-boost converter IGBT.
The circuit structure of the capacitance voltage detection unit is shown in fig. 8, and includes a first voltage sensor, a first operational amplifier OP07, a first operational amplifier LM358, and two operational amplifiers connected in series. In this embodiment, pin 1 of the capacitor voltage detection circuit is connected to the anode of the energy storage device, pin 2 is connected to the cathode of the energy storage device, and pin 3 is respectively connected to pin ADCINA0 of the DSP processor.
As shown in fig. 9, the low-voltage dc power supply supplies power to the DSP processor, the rotary transformer, the hall current sensor, the current conditioning circuit, the capacitance voltage detection unit, and the PWM isolation driving unit, an input terminal of the low-voltage dc power supply is connected to a 220V power grid, pins ± 12V are connected to pins 0 and 1 of the hall current sensor, pins +5V are connected to a pin 0 of the rotary transformer, pins +5V are connected to a pin VCC of the DSP processor, pins +12 are also connected to pins 2 and 4 of the current conditioning circuit, pins-12V are also connected to pins 3 and 5 of the current conditioning circuit, pins +15 are connected to pins 12 and 16 of the capacitance voltage detection circuit, pins-15V are connected to pins 11 and 15 of the capacitance voltage detection circuit, and pins +15 are also connected to the driving circuit of the PWM isolation driving unit.
In this embodiment, the main controller employs a TMS320F28335DSP processor as shown in fig. 10. The ADCINB 0-ADCINB 2 pins of the DSP processor are connected with a pin 1 of the current conditioning circuit, the ADCINA0 pin of the DSP processor is connected with a pin 3 of the capacitance voltage detection circuit, a GPIO68-79 port of the DSP processor is connected with an SN74ALVC164245 level conversion chip of the position signal conditioning circuit, PWM 1-PWM 8 pins of the DSP processor are respectively connected with sPWM 1-sPWM 8 pins of the isolation driving unit, a VCC pin of the DSP processor is connected with a +5V pin of the low-voltage direct-current power supply, and an SCTDDA port and an SCIRXDA port of the DSP processor are connected with a Tin1 port and an Rout1 port of the signal interface.
As shown in fig. 11, in this embodiment, a position speed signal is collected by a rotary transformer, the model of the rotary transformer is TS225N12e102, the rotary transformer collects an analog signal, and the analog signal needs to be converted into a digital signal and transmitted to a DSP processor, in this embodiment, an AU6802N1 rotary transformer decoding chip is adopted, an interface circuit between AU6802N1 and the rotary transformer is designed, ac excitation voltage provided by AU6802N1 to the rotary transformer is output from an RSO-COM port, and the frequency is set by FSEL1 and FSEL2, in this embodiment, the frequency of the excitation voltage signal is set to 10KHz, and the effective value of the excitation voltage is adjusted by a dual power supply Booster amplifier circuit. The excitation signal is fed back to the ports R1E-R2E for realizing internal phase synchronization detection and phase failure detection. The cos and sin signals generated by the rotary transformer enter a decoding chip through S3-S1 and S4-S2 ports respectively after being conditioned. The AUR802N1 decoding chip converts the analog position signals (sin, cos) output by the resolver into parallel digital signals, and then the digital position signals are read in and processed by the DSP processor. AU6802N1 has three signal output modes, in this embodiment, an absolute output mode is adopted, the output of the absolute output mode is a 12-bit position signal, and the signal is directly connected with the I/O port of the DSP through a level conversion chip SN74ALVC 164245.
In this embodiment, a control method for a high-power motor control mechanism is based on the utility model discloses a control device controls the high-power motor control mechanism, as shown in fig. 12, including the following steps:
step 1: the upper computer sends an energy storage device charging instruction to the main controller through the communication interface, the capacitor voltage detection circuit starts to work, the main controller controls the PWM isolation driving unit to further control the IGBT of the buck-boost converter to be conducted, and the buck-boost converter starts to work; when the high-voltage circuit breaker is opened, the T1 switch tube IGBT of the buck-boost converter is completely turned off, the T2 switch tube IGBT is in a working state, and the charging voltage of the energy storage device is 200V; when the high-voltage circuit breaker is switched on, a T1 switching tube IGBT of the buck-boost converter is in a working state, the T2 switching tube IGBT is completely conducted, and the charging voltage of the energy storage device is 300V; in the whole process of switching on or switching off, the main controller performs PI control on the buck-boost converter; the commercial power grid supplies power to the PWM isolation driving unit, the three Hall current sensors, the capacitance voltage detection unit, the current conditioning unit and the main controller through a low-voltage direct-current power supply;
step 2: when a relay protection device in the power system detects that a short-circuit fault occurs, the upper computer sends a switching-off or switching-on instruction under the working condition of the short-circuit fault to the main controller; when the relay protection device requires the high-voltage circuit breaker to act according to the rated current working condition, the upper computer sends an opening or closing instruction under the rated current working condition to the main controller; when the relay protection device requires the high-voltage circuit breaker to act under the no-load working condition, the upper computer sends an opening or closing instruction under the no-load working condition to the main controller; the main controller sends an instruction to the PWM isolation driving unit to drive the IGBT of the inverter to be conducted, and the high-voltage circuit breaker motor operating mechanism moves according to a preset speed curve;
and step 3: in the operation process of the permanent magnet synchronous motor, the U-phase and V-phase current is obtained by detecting the U-phase and V-phase current through the Hall current sensors arranged on the U-phase and V-phase, the current Iu and the current Iv are obtained and are transmitted to the main controller through the current conditioning circuit; the main controller converts the static two-phase current through CLARKE and converts the static two-phase current into the moving two-phase feedback current through PARK conversion; measuring a rotary transformer arranged at the tail of the permanent magnet synchronous motor to obtain a driving electric angle required by PARK conversion and PARK inverse conversion; and calculating the rotor speed of the permanent magnet synchronous motor through the position;
and 4, step 4: the main controller performs PI regulation on the rotor speed of the permanent magnet synchronous motor obtained through position calculation as a feedback speed and a target speed, outputs Q-axis reference current, keeps the reference current of a D axis to be 0 all the time, performs PI regulation on two currents respectively to obtain two-phase moving current signals, converts the two-phase moving current signals into two-phase static current signals through inverse PARK conversion, and generates six paths of SVPWM signals through the main controller to control an inverter to drive the permanent magnet synchronous motor;
and 5: in the action process of the high-voltage circuit breaker motor operating mechanism, current information collected on the three Hall current sensors, rotor position information of the high-voltage circuit breaker motor operating mechanism collected on the rotary transformer and voltage information of the energy storage device collected by the capacitor voltage detection unit are sent to an upper computer through a communication interface, and the upper computer performs filtering and displays control effects, adjusts a control parameter PI and sends the control parameter PI to a main controller;
step 6: the main controller receives the adjusting information transmitted by the upper computer, and the adjusting information is applied to the inverter and the IGBT of the buck-boost converter, so that the travel and speed curve of the moving contact of the motor operating mechanism of the high-voltage circuit breaker under the working conditions of short-circuit fault, rated current and no-load can be accurately controlled.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; but such modifications and substitutions do not depart from the spirit of the corresponding technical solutions and the scope of the present invention as defined in the appended claims.
Claims (4)
1. A control device for a high-power motor control mechanism is characterized in that: the device comprises a rectifying unit, a voltage stabilizing capacitor, a buck-boost converter, an energy storage device, a signal acquisition unit, a signal processing unit, an inverter, a main controller, a current conditioning circuit, a position signal conditioning circuit, a capacitor voltage detection unit, an upper computer, a PWM isolation driving unit and a low-voltage direct-current power supply;
the input end of the rectifying unit is connected with commercial power, the output end of the rectifying unit is connected with a voltage stabilizing capacitor, the output end of the voltage stabilizing capacitor is connected with a buck-boost converter, the output end of the buck-boost converter is connected with an energy storage device, the output end of the energy storage device is connected with a capacitor voltage detection unit and an inverter, the output end of the inverter is connected with a three-phase winding of a permanent magnet synchronous motor, and the capacitor voltage detection unit is connected with; the input end of the signal acquisition unit is connected with the permanent magnet synchronous motor, and the acquired signal is output to the main controller after passing through the current conditioning circuit and the position signal conditioning circuit; the upper computer is connected with the main controller through the communication interface, the PWM output end of the main controller is connected with the input end of the PWM isolation driving unit, the output end of the PWM isolation driving unit is connected with the gate input end of the IGBT of the inverter and the gate input end of the IGBT of the buck-boost converter, and the low-voltage direct-current power supply is connected with the power supply end of the PWM isolation driving unit, the signal acquisition unit, the capacitance voltage detection unit and the power supply end of the main controller to supply power for the whole device.
2. The control device for the high power motor operating mechanism according to claim 1, wherein: the signal acquisition unit comprises three Hall current sensors for acquiring the current of a three-phase winding of the permanent magnet synchronous motor, a rotary transformer for acquiring the position of a rotor of the permanent magnet brushless direct current motor and a capacitor voltage detection unit for acquiring the voltage value of the energy storage device;
three Hall current sensors of the signal acquisition unit penetrate through a three-phase winding of the permanent magnet synchronous motor, output ends of the three Hall current sensors are connected into a current conditioning circuit, an output end of the current conditioning circuit is connected to an AD (analog-to-digital) port of a main controller, an input end of a rotary transformer is connected to the side of a rotor spindle of a motor operating mechanism of the high-voltage circuit breaker, an output end of the rotary transformer is connected into a position signal conditioning circuit, and an output end of the position signal conditioning circuit is connected to an IO port of the main controller.
3. The control device for the high power motor operating mechanism according to claim 1, wherein: the main controller adopts a DSP chip.
4. The control device for the high power motor operating mechanism according to claim 1, wherein: the communication interface circuit comprises a first RS232 serial port of the upper computer, a first MAX3232 chip and a first controller interface, and realizes communication between the upper computer and the main controller through serial port communication to perform man-machine interaction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921531774.1U CN210273878U (en) | 2019-09-16 | 2019-09-16 | Control device for high-power motor control mechanism |
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| CN201921531774.1U CN210273878U (en) | 2019-09-16 | 2019-09-16 | Control device for high-power motor control mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492796A (en) * | 2019-09-16 | 2019-11-22 | 沈阳工业大学 | A kind of heavy-duty motor operating mechanism control device and method |
| CN111749547A (en) * | 2020-05-19 | 2020-10-09 | 东风汽车有限公司 | Electronic lock control device of charging gun and charging gun |
-
2019
- 2019-09-16 CN CN201921531774.1U patent/CN210273878U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492796A (en) * | 2019-09-16 | 2019-11-22 | 沈阳工业大学 | A kind of heavy-duty motor operating mechanism control device and method |
| CN111749547A (en) * | 2020-05-19 | 2020-10-09 | 东风汽车有限公司 | Electronic lock control device of charging gun and charging gun |
| CN111749547B (en) * | 2020-05-19 | 2022-07-01 | 东风汽车有限公司 | Electronic lock control device of charging gun, charging pile and automobile |
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