WO2017046965A1 - Dispositif onduleur et procédé de fabrication de dispositif onduleur - Google Patents

Dispositif onduleur et procédé de fabrication de dispositif onduleur Download PDF

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Publication number
WO2017046965A1
WO2017046965A1 PCT/JP2015/076812 JP2015076812W WO2017046965A1 WO 2017046965 A1 WO2017046965 A1 WO 2017046965A1 JP 2015076812 W JP2015076812 W JP 2015076812W WO 2017046965 A1 WO2017046965 A1 WO 2017046965A1
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Prior art keywords
unit
control
main circuit
microcomputer
signal
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PCT/JP2015/076812
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English (en)
Japanese (ja)
Inventor
幸司 岩橋
賢志 末島
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株式会社安川電機
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Application filed by 株式会社安川電機 filed Critical 株式会社安川電機
Priority to JP2016550828A priority Critical patent/JP6099004B1/ja
Priority to PCT/JP2015/076812 priority patent/WO2017046965A1/fr
Priority to CN201580083003.9A priority patent/CN108141144B/zh
Publication of WO2017046965A1 publication Critical patent/WO2017046965A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

Definitions

  • the disclosed embodiment relates to an inverter device and a method for manufacturing the inverter device.
  • Patent Document 1 describes an inverter device including a main circuit unit and a control unit.
  • inverters In general, many types of inverters are lined up according to required specifications such as size, control performance, function, cost, etc., but if each component is developed individually, the development delivery date Becomes longer. For this reason, when the development delivery time is to be shortened, further optimization of the device configuration is desired.
  • the present invention has been made in view of such problems, and an object of the present invention is to provide an inverter device and a method for manufacturing the inverter device that can shorten the development delivery time.
  • a main circuit board including a main circuit unit including an inverter unit and a detection unit that detects a state quantity of the main circuit unit, and the main circuit board
  • a first control board that is detachably connected and includes a first control unit that performs a first control based on a detection signal of the detection unit, and is detachable from the main circuit board via the first control board.
  • An inverter device including a second control board that is connected and includes a second control unit that performs second control based on the detection signal is applied.
  • a main circuit board including an inverter unit, a main circuit board including a detection unit that detects a state quantity of the main circuit unit, and a detection signal of the detection unit
  • a method for manufacturing an inverter device comprising: a first control board including a first control unit that performs a first control; and a second control board including a second control unit that performs a second control based on the detection signal.
  • the main circuit board, the first control board, and the second according to required specifications from among a plurality of types of the main circuit board, the first control board, and the second control board prepared in advance.
  • a method of manufacturing an inverter device that selects and combines control boards is applied.
  • a main circuit board including an inverter unit and a detection unit that detects a state quantity of the main circuit part, and the main circuit board are detachably connected to the main circuit board.
  • a first control board including a first control unit that performs first control based on a detection signal of the detection unit, and the main circuit board is detachably connected to the main circuit board via the first control board, and the detection From a second control board having a second control unit for performing second control based on the signal, and a plurality of types of the main circuit board, the first control board, and the second control board prepared in advance.
  • An inverter device is applied, which has means for enabling a combination of the main circuit board, the first control board, and the second control board selected according to required specifications.
  • control performance can be improved.
  • FIG. 2 is a functional block diagram showing main components in the inverter device of the first embodiment and various information transmission / reception paths between them. It is a functional block diagram inside the sensor microcomputer of 1st Embodiment. It is a figure explaining the high frequency component decreasing process of the output voltage detection signal by a low-pass filter and a low-pass filter part. It is a functional block diagram of the inverter apparatus of a 1st comparative example. It is a functional block diagram of the inverter apparatus of the 2nd comparative example.
  • FIG. 5 is a functional block diagram showing main components in the inverter device of the second embodiment and various information transmission / reception paths between them. It is a functional block diagram inside the sensor microcomputer of 2nd Embodiment.
  • FIG. 1 shows functional blocks representing main components in the inverter device of the first embodiment and various information transmission / reception paths between them.
  • an inverter device 1 is a power conversion device that converts three-phase AC power supplied from the outside into drive control power input to an electric motor such as a motor (not shown), and is mainly used as a primary system. It has a circuit unit 2 and a control circuit unit 3 as a secondary system.
  • a three-phase induction motor (control target) is assumed as a target motor to be driven and controlled by the inverter device 1.
  • the main circuit unit 2 rectifies the three-phase AC power of high voltage and current fed from an external commercial power source (not shown) into DC power, and the DC power has a desired frequency based on a PWM signal described later.
  • the output voltage and the output current are converted into three-phase AC power, and this is input to the motor as the drive control power. That is, the main circuit unit 2 is configured as a so-called strong electric circuit unit that mainly handles large electric power.
  • the control circuit unit 3 generates a PWM signal based on a control command input from the sequencer 4 (external device) which is an external host control device, and inputs this to the main circuit unit 2 to perform the above power conversion operation. While controlling, it has the function to perform operation management on safety or control performance of the whole inverter device 1 by transmitting and receiving various information signals and command signals to and from the main circuit unit 2. That is, the control circuit unit 3 is configured as a so-called weak electric circuit unit that mainly handles only low voltage and current information signals.
  • the high-power (primary) main circuit unit 2 and the weak-electric (secondary) control circuit unit 3 are electrically reinforced with respect to various safety standards. It is stipulated to be designed to be insulated.
  • various information and command signals transmitted and received between the main circuit unit 2 and the control circuit 3 are all composed of low-voltage digital signals, and these digital signals are converted into the main circuit unit. 2 and the control circuit unit 3 via a digital photocoupler 5 (abbreviated as “PHC” in the figure) (except for an output current detection signal described later).
  • PLC digital photocoupler 5
  • the main circuit unit 2 mainly includes an inverter unit 11, an auxiliary unit 12, a detection unit 13, a low-pass filter 14, and a sensor microcomputer 15.
  • the inverter unit 11 controls the switching operation of a semiconductor bridge circuit made of, for example, an IGBT semiconductor switching element based on a PWM signal output from a drive microcomputer 32 of the control circuit unit 3 to be described later, and drives driving power for three-phase alternating current Is output to the motor.
  • the auxiliary unit 12 mainly has various auxiliary functions related to the safety operation of the main circuit unit 2.
  • a function unit related to so-called VPH a function unit related to protection of the smoothing capacitor of the rectifier, and a function unit related to operation of the so-called dynamic brake are provided.
  • the connection of the inrush current preventing resistor is switched by the input / output of the MCON signal and the MCA signal.
  • the operation of the dynamic brake is switched by the input / output of the BTON signal and the BTA signal.
  • the auxiliary unit 12 sends and receives digital input / output signals to / from the sensor microcomputer 15 described later.
  • the detection unit 13 mainly has a function of detecting various state quantities in the main circuit unit 2.
  • an output voltage detector 21 (abbreviated as “Vu, Vv, Vw” in the figure)
  • an output current detector 22 (abbreviated as “CT” in the figure)
  • various state quantity detectors 23 have.
  • the output voltage detector 21 detects the output voltage of the three-phase AC drive control power output to the motor for each phase.
  • the output current detector 22 detects the output current of the three-phase AC drive control power output to the motor.
  • Various state quantity detectors 23 detect a voltage VAC of three-phase AC power fed from the outside, a DC bus voltage VPN after rectification, a temperature THM of the semiconductor bridge circuit, and a so-called US.
  • the detection unit 13 unilaterally outputs various state quantities detected to a sensor microcomputer 15 described later as an analog detection signal.
  • the output current detection unit 22 performs detection using a so-called Hall element (Hall effect), and the detection signal is electrically reinforced and insulated from the high-voltage main circuit unit 2. Since it is detected as an analog signal, it is directly input to the control circuit unit 3 of the weak electric system.
  • the low-pass filter 14 is configured by a hardware actual circuit using, for example, an RLC element or an operational amplifier, and has a frequency higher than a predetermined cutoff frequency from the output voltage detection signal of each phase detected by the output voltage detection unit 21.
  • the noise component is gradually reduced and output to the sensor microcomputer 15 described later.
  • the sensor microcomputer 15 is constituted by a so-called programmable CPU of one chip, and has a function of executing predetermined control in the main circuit unit 2 in an integrated manner. Specific contents of the integrated control function of the sensor microcomputer 15 will be described in detail later. Most of the sensor microcomputer 15 itself is composed of a digital circuit, and directly transmits and receives digital signals to and from the auxiliary unit 12 as an information transmission / reception mode. Further, the sensor microcomputer 15 responds to various analog detection signals (excluding output current detection signals) output from the detection unit 13 with an A / D conversion unit (“ADC” in the figure) provided in the sensor microcomputer 15. And unilaterally.
  • ADC A / D conversion unit
  • the sensor microcomputer 15 unilaterally transmits a digital abnormality detection signal to the overall control microcomputer of the control circuit unit 3 to be described later in a serial communication transmission form.
  • the sensor microcomputer 15 transmits / receives digital control-related signals to / from a drive microcomputer 32 of the control circuit unit 3 to be described later in a serial communication transmission form.
  • the sensor microcomputer 15 corresponds to a first control unit described in each claim.
  • control circuit unit 3 mainly includes an overall control microcomputer 31 and a drive microcomputer 32.
  • the overall control microcomputer 31 is constituted by a so-called programmable CPU of one chip, and has a function of executing predetermined control in the entire inverter device 1 in an integrated manner.
  • Specific contents of the integrated control function of the overall control microcomputer 31 include, for example, processing directly related to motor drive control and safety processing executed in response to detection of various abnormalities. To do.
  • motor drive control processing a speed command and a current command (torque command) generated based on a control command directly input from the sequencer 4 which is an external host control device are output to the drive microcomputer 32 described later.
  • a corresponding process is selected based on an output current detection signal directly input from the output current detection unit 22 of the main circuit unit 2 or an abnormality detection signal input from the sensor microcomputer 15. And run. For this reason, according to the various safety standards described above, at least only the overall control microcomputer 31 is defined to be electrically reinforced and insulated from the main circuit unit 2.
  • the overall control microcomputer 31 itself is almost entirely composed of a digital circuit, and as a data transmission / reception mode, a plurality of digital signals are transmitted / received to / from the drive microcomputer 32 in parallel and at high speed.
  • This digital signal transmission / reception via the parallel bus can be realized easily and inexpensively because the overall control microcomputer 31 is provided on the same circuit as the drive microcomputer 32, and the overall control microcomputer 31 and the drive can thereby be realized. If the microcomputer 32 is composed of substantially the same chip, the microcomputer 32 can perform cooperative processing as fast as possible.
  • the two chips of the overall control microcomputer 31 and the drive microcomputer 32 each of which reduces the processing load, perform the cooperative processing, so that the cost can be significantly reduced as compared with the case where the processing is concentrated on one chip and concentrated.
  • the overall control microcomputer 31 responds to an analog detection signal output from the output current detection unit 22 of the main circuit unit 2 with an A / D conversion unit ("ADC" in the figure) provided in the overall control microcomputer 31. Abbreviated).
  • ADC A / D conversion unit
  • the overall control microcomputer 31 unilaterally receives the digital abnormality detection signal output from the sensor microcomputer 15 of the main circuit unit 2 in the serial communication transmission form.
  • the drive microcomputer 32 is configured by a so-called programmable CPU of one chip, and includes a speed command and a current command (torque command) input from the overall control microcomputer 31, a control related signal input from the sensor microcomputer 15, and the like. Based on the above, the PWM signal is generated and input to the inverter unit 11 of the main circuit unit 2.
  • the PWM signal generation function is performed by, for example, a speed control unit (abbreviated as “ASR” in the drawing) and a current control unit (equivalent to the torque control unit: abbreviated as “ACR” in the drawing) implemented by software.
  • the drive microcomputer 32 has a function of compensating for an error between the voltage command and the output voltage actually output to the motor.
  • the drive microcomputer 32 itself is configured by a digital circuit, and as a data transmission / reception mode, a digital PWM signal is unilaterally transmitted to the inverter unit 11 of the main circuit unit 2. Further, the drive microcomputer 32 transmits and receives digital control-related signals to and from the sensor microcomputer 15 of the main circuit unit 2 in a serial communication transmission form.
  • the drive microcomputer 32 corresponds to the first microcomputer described in each claim
  • the overall control microcomputer 31 corresponds to the second microcomputer described in each claim
  • the combination of the overall control microcomputer 31 and the drive microcomputer 32 corresponds to each.
  • the drive control of the motor via the main circuit unit 2 (mainly the inverter unit 11) performed in cooperation with the overall control microcomputer 31 and the drive microcomputer 32 corresponds to the second control unit described in the claims. This corresponds to control No. 2.
  • the control of the speed control unit ASR and the current control unit ACR executed inside the drive microcomputer 32 corresponds to a control algorithm for the controlled object described in each claim.
  • various digital signals other than the detection signal of the output current detection unit 22 are transmitted and received between the main circuit unit 2 and the control circuit unit 3 via the digital photocoupler 5.
  • an abnormality detection signal transmitted unilaterally from the sensor microcomputer 15 to the overall control microcomputer 31 is transmitted via two systems of digital photocouplers 5 in the illustrated example.
  • control-related signals transmitted and received between the sensor microcomputer 15 and the drive microcomputer 32 are transmitted and received via the two systems of digital photocouplers 5 in the illustrated example.
  • the PWM signal unilaterally transmitted from the drive microcomputer 32 to the inverter unit 11 is transmitted via the six digital photocouplers 5 in the illustrated example.
  • Each digital photocoupler 5 may be provided in either the main circuit unit 2 or the control circuit unit 3, and the main circuit unit 2 and the control circuit unit 3 are connected by electrical wiring such as a cable or a connector. do it.
  • the photocoupler corresponds to the signal transmission unit described in each claim.
  • FIG. 2 shows each functional block in the sensor microcomputer 15.
  • the sensor microcomputer 15 includes an A / D conversion unit 41, a sequence control unit 42, an abnormality determination unit 43, a low-pass filter unit 44, and a signal transmission unit 45.
  • the A / D conversion unit 41 and the signal transmission unit are implemented by hardware circuits, and the other sequence control unit 42, abnormality determination unit 43, and low-pass filter unit 44. Is implemented by software processing.
  • the A / D converter 41 converts all of the various analog detection signals VAC, VPN, THM, US input from the detector 13 to the sensor microcomputer 15 into digital signals.
  • the sequence control unit 42 executes sequence control for predetermined circuit components provided in the main circuit unit 2 based on the digitally converted AC voltage detection signal VAC and the DC bus voltage detection signal VPN.
  • sequence control in the example of the present embodiment, when a large inrush current is input to the smoothing capacitor of the rectifier when the inverter device 1 is turned on, a connection transistor (predetermined circuit component) of the inrush current prevention circuit is used. ) Is turned on, control is performed such that the inrush current is consumed by the inrush current prevention resistor. The control at this time is performed by transmitting and receiving the MCON signal and the MCA signal to and from the auxiliary device unit 12.
  • the control at this time is performed by sending and receiving a BTON signal and a BTA signal to and from the auxiliary device unit 12.
  • the abnormality determination unit 43 determines whether or not the detection unit 13 is abnormal based on the detected temperature THM of the semiconductor bridge circuit that has been digitally converted. For example, when it is determined by comparison of the abnormality determination unit 43 that the detected temperature THM exceeds a predetermined threshold and there is an abnormality, an abnormality detection signal (abnormal signal) having a predetermined content is transmitted via a signal transmission unit 45 described later. To the overall control microcomputer 31.
  • the low-pass filter unit 44 gradually reduces a frequency component higher than a predetermined cut-off frequency with respect to the digitally converted output voltage detection signal (see FIG. 3 described later), and sends it to the drive microcomputer 32 via a signal transmission unit 45 described later. Send.
  • the signal transmission unit integrates the abnormality detection signal input from the abnormality determination unit 43 and the output voltage detection signal input from the low-pass filter unit 44 to integrate the control microcomputer 31 or the drive microcomputer 32 in a serial communication transmission form. Send to.
  • the sensor microcomputer 15 outputs the various detection signals (or control-related signals) in addition to outputting the detected detection signals (or control-related signals) via the processing of each internal functional block as described above. It is also possible to output the signal input to the relay as it is and relay it (not shown).
  • the integrated control function of the sensor microcomputer 15 shown in FIG. 2 corresponds to the first control described in each claim.
  • the output voltage detection signal (solid line part) immediately after detection of the output voltage detection part 21 shown in the upper stage part is a rectangular wave-shaped signal formed by PWM control, and this is an element referred to in the drive microcomputer 32.
  • 5 is a pulse signal having a width and a sign corresponding to each instantaneous value level of the sinusoidal waveform (dotted line portion) of the voltage command.
  • This pulse signal is normally at the same level corresponding to each sign (positive or negative direction), but when a sudden load fluctuation or the like occurs in the motor, it is different from the normal around the sign inversion point. There is a case where level-like noise N is mixed.
  • the noise N can be removed as shown in the middle part. Note that noise having a width and level other than the illustrated example may occur, but the cutoff frequency of the low-pass filter 14 may be appropriately set so as to be appropriately removed.
  • the output voltage detection signal whose pulse waveform is shaped in this way is further reduced by a high-frequency component by a low-pass filter unit 44 implemented in software in the sensor microcomputer 15 to detect the output voltage as shown in the lower part.
  • the signal waveform (solid line portion) can be demodulated into a shape close to the original voltage command sinusoidal waveform (dotted line portion). Since the low-pass filter unit 44 is implemented in software, the cut-off frequency can be easily and arbitrarily set, and is appropriately adjusted so as to be closer to the sine waveform of the original voltage command. be able to.
  • the drive microcomputer 32 compares the voltage command with the output voltage inside.
  • the compensation accuracy of the output voltage error compensation function can be improved.
  • the auxiliary unit 12 of the main circuit unit 2 sends and receives digital control related signals to and from the overall control microcomputer 31 and the drive microcomputer 32 of the control circuit unit 3 via the digital photocoupler 5.
  • the detection unit 13 of the main circuit unit 2 excluding the output current detection unit 22 sends analog detection signals to the analog photocoupler 6 for both the general control microcomputer 31 and the drive microcomputer 32 of the control circuit unit 3. Send unilaterally.
  • the circuit configuration of the first comparative example it is necessary to provide more photocouplers in order to function in the same manner as the circuit configuration of the first embodiment.
  • Such an increase in the number of photocouplers used becomes a factor that increases the manufacturing cost of the inverter device 1.
  • the analog photocoupler 6 that secures a sufficient reinforced insulation function and detection accuracy is more expensive than the digital photocoupler 5, and its use greatly affects the overall manufacturing cost.
  • the sensor microcomputer 15 provided in the main circuit unit 2 converts all control-related signals and various detection signals (except for the output current detection signal) into a digital format, and transmits / receives to / from the control circuit unit 3. Therefore, the use of the analog photocoupler 6 can be avoided, and the number of digital photocouplers 5 used can be suppressed because the transmission and reception of the serial communication is concentrated in a small number of systems. That is, the first embodiment can be reduced in cost compared to the first comparative example.
  • the drive microcomputer 32 is arranged in the main circuit unit 2, and the drive microcomputer 32 includes various detection signals of the detection unit 13 (in this case, also including detection signals of the output current detection unit 22) and control related to the auxiliary unit 12.
  • a circuit configuration for transmitting and receiving all signals is conceivable.
  • the overall control microcomputer 31 and the drive As shown in the figure, it is necessary to send and receive various information and commands between the microcomputers 32 in the form of serial communication transmission via the four systems of digital photocouplers 5. In this way, when information and commands are transmitted and received between the general control microcomputer 31 and the drive microcomputer 32 by serial communication, the overall cooperative processing speed is significantly reduced due to the delay of the transmission speed, and the motor control performance is lowered. Resulting in.
  • the overall control microcomputer 31 and the drive microcomputer 32 are arranged on the same control circuit unit 3 and can transmit and receive information at high speed via the parallel bus. When configured, it can perform cooperative processing as fast as possible.
  • the output voltage detection unit 21 detects the output voltage by the on / off logic of the switching element, and the output voltage detection signal is sent to the comparison circuit 16 such as a comparator. If the detection signal is generated as an output voltage error compensation signal, there is a possibility that the compensation accuracy is lowered due to a large detection error.
  • Factors that cause detection errors in this way include variations in the reference voltage level and threshold level of the comparator used in the comparison circuit 16, changes in the output voltage due to the polarity of the current flowing through the snubber return diode during the IGBT dead time, Alternatively, variations such as the characteristic error of each component in the circuit such as the on-resistance and parasitic capacitance of the IGBT can be considered.
  • the output voltage detection unit 21 outputs an output voltage detection signal in an analog format, and this is removed from the high frequency noise by the low-pass filter 14, and the sensor microcomputer 15.
  • the low-pass filter unit 44 implemented in software in the sensor microcomputer 15 can obtain an output voltage detection signal shaped with a waveform close to a sine wave by decreasing the high frequency component with higher accuracy.
  • the compensation accuracy of the output voltage error compensation can be improved without being affected by variations in the characteristic errors of the component elements as in the second comparative example.
  • the A / D conversion unit 41 of the sensor microcomputer 15 converts the detection signal that is an analog signal into a digital signal, and the signal transmission unit 45 is converted.
  • the plurality of detection signals are integrated and transmitted to the drive microcomputer 32 by serial communication.
  • the drive microcomputer 32 controls the main circuit unit 2 based on the received detection signal (control related signal). Since a plurality of detection signals are integrated and output, the number of photocouplers can be reduced and the circuit configuration can be simplified. In addition, since it is possible to use, for example, a digital photocoupler 5 that is cheaper than the analog photocoupler 6 as a photocoupler, the cost can be greatly reduced.
  • the abnormality determination unit 43 of the sensor microcomputer 15 determines the abnormality of the detection unit 13. For example, the detected temperature THM of the IGBT switching element of the inverter unit 11 is compared with a threshold value, and when the detected temperature THM exceeds the threshold value, it is determined that there is an abnormality. If it is determined that there is an abnormality, an abnormality detection signal is transmitted to the overall control microcomputer 31. As a result, the overall control microcomputer 31 can execute processing such as stopping the operation of the inverter device 1, so that the inverter device 1 (main circuit unit 2 and the like) can be protected. In addition, since the abnormality determination is performed by the sensor microcomputer 15 and only the result is transmitted to the overall control microcomputer 31, the processing load on the overall control microcomputer 31 can be reduced.
  • the sequence control unit 42 of the sensor microcomputer 15 executes sequence control for predetermined circuit components in the auxiliary device unit 12 provided in the main circuit unit 2.
  • the sequence control unit 42 of the sensor microcomputer 15 executes sequence control for predetermined circuit components in the auxiliary device unit 12 provided in the main circuit unit 2.
  • the drive microcomputer 32 has an output voltage error compensation function
  • the sensor microcomputer 15 that relays the detection signal of the output voltage detection unit 21 has a low-pass filter unit 44. Therefore, the rectangular wave output voltage detection signal (PWM output voltage) can be demodulated into a sine wave detection signal and transmitted to the drive microcomputer 32. Thereby, the drive microcomputer 32 can compare the sine wave-like output voltage closer to the actual output voltage with the voltage command. Therefore, detection errors can be suppressed and compensation accuracy can be improved.
  • the low-pass filter unit 44 of the sensor microcomputer 15 has a filter function by software, detection errors can be reduced by arbitrarily setting parameters (cutoff frequency, etc.), and it does not depend on component variations or characteristics. The output voltage can be detected.
  • the detection signal of the output voltage detector 21 is filtered by the low-pass filter 14 implemented by a hardware circuit before being input to the sensor microcomputer 15.
  • noise included in the detection signal of the output voltage detection unit 21 can be reduced, so that the compensation accuracy of the output voltage error can be further improved.
  • the control circuit unit 3 that performs drive control of the motor via the main circuit unit 2 is composed of two microcomputers (overall control microcomputer, drive microcomputer 32), but the control algorithm (ASR, Since the execution function of (ACR) is integrated in the drive microcomputer 32, the control performance of the inverter device 1 can be suppressed from being affected by the delay due to the transmission speed between the microcomputers.
  • ASR Since the execution function of (ACR) is integrated in the drive microcomputer 32, the control performance of the inverter device 1 can be suppressed from being affected by the delay due to the transmission speed between the microcomputers.
  • functions other than execution of the control algorithm for example, a communication function between the drive microcomputer 32 and the sequencer 4 are implemented.
  • the overall control microcomputer 31 can communicate with the drive microcomputer 32 at high speed various data received from, for example, the sequencer 4 or the sensor microcomputer 15. Therefore, control performance can be improved.
  • the drive microcomputer 32 has an output voltage error compensation function that compares the output voltage detection signal input from the sensor microcomputer 15 with the voltage command and compensates for an error therebetween, so that it is highly accurate. It was possible to control the drive of the motor.
  • this output voltage error compensation function is not indispensable for controlling the driving of the motor, and can be omitted when it is desired to control the driving of the motor simply by specifying an approximate rotational speed or torque.
  • an inverter device 1A having a simple configuration in which the output voltage error compensation function is omitted will be described.
  • FIG. 6 shows the main components of the inverter device 1A of the second embodiment which is a simple configuration type as described above and functional blocks representing the transmission / reception paths of various information between them.
  • part which has the structure equivalent to the said 1st Embodiment the same code
  • the detection unit 13 of the main circuit unit 2 does not have the output voltage detection unit 21, and the sensor
  • the drive microcomputer 32 is omitted, and the overall control microcomputer 31A is configured by one chip by integrating the functions of the drive microcomputer 32.
  • the overall control microcomputer 31A has the functions of the speed control unit ASR and the current control unit ACR, but does not have the output voltage error compensation function. For this reason, the sensor microcomputer 15A does not transmit the output voltage detection signal to the overall control microcomputer 31A. Instead, the sensor microcomputer 15A sends the output current detection signal together with the abnormality detection signal through the same system serial communication. To 31A.
  • the overall control microcomputer 31A transmits a digital AD trigger signal (synchronization signal) to the sensor microcomputer 15A via one digital photocoupler 5 in the illustrated example. Since other configurations are the same as those of the first embodiment, description thereof is omitted.
  • FIG. 7 shows each functional block in the sensor microcomputer 15A in the second embodiment corresponding to FIG. In FIG. 7, the low-pass filter unit 44 is omitted.
  • the A / D conversion unit 41 converts the output current detection signal into a digital format, and the signal transmission unit transmits the output current detection signal and the abnormality detection signal. Can be integrated in a serial communication transmission form and transmitted to the overall control microcomputer 31A.
  • the overall control microcomputer 31A used for such a circuit configuration, there is a case where the motor cannot be normally controlled unless an output current detection signal can be received in synchronization with the PWM calculation cycle.
  • the overall control microcomputer 31A since the overall control microcomputer 31A directly receives the output current detection signal from the output current detection unit 22, the synchronization of the reception can be easily realized.
  • the output current detection signal is input to the overall control microcomputer 31A via the sensor microcomputer 15A, the output current detection signal is transmitted and received between the overall control microcomputer 31A and the sensor microcomputer 15A. It is necessary to perform synchronous control for this purpose.
  • the overall control microcomputer 31A is provided with a synchronization signal transmission unit 46, and when this outputs an AD trigger signal in synchronization with the PWM calculation cycle, the sensor microcomputer 15A responds and sends an output current detection signal to the overall control microcomputer 31A. Send.
  • the carrier signal shown in the upper part of the figure is a triangular wave that is referred to when generating a PWM signal in the overall control microcomputer 31A, and its frequency varies depending on the control state of the motor.
  • the output current detection signal is transmitted and received when the carrier signal reaches the lowest level (the lowest point of the valley), and the synchronization signal transmission unit 46 of the overall control microcomputer 31A has a pulse waveform at that timing.
  • An AD trigger signal (negative logic in the illustrated example) is output to the sensor microcomputer 15A. There are two types of AD trigger signals with different pulse widths, and each time a narrow pulse is repeated a predetermined number of times, a wide pulse is output once.
  • the sensor microcomputer 15A When the sensor microcomputer 15A receives an AD trigger signal regardless of the pulse width, the sensor microcomputer 15A detects the output current detection signal from the output current detection unit 22 and accumulates the detection result. In particular, when the received pulse width is wide, the detection results of the output current detection signals accumulated so far from the previous transmission are collectively transmitted to the overall control microcomputer 31A. Thereby, the overall control microcomputer 31A can receive the detection result of the output current from the sensor microcomputer 15A in synchronization with the PWM calculation period with the carrier period corresponding to the control state at that time as a unit.
  • the timing for transmitting and receiving the detection result of the output current may be, for example, the highest level (vertex) other than the lowest level of the carrier signal (lowest point of the valley).
  • the inverter device 1A of the present embodiment the inverter device 1A that can function in the same manner as the first embodiment other than the output voltage error compensation function can be realized while greatly simplifying the circuit configuration. .
  • the AD trigger signal is transmitted from the overall control microcomputer 31A to the sensor microcomputer 15A at a timing corresponding to the PWM calculation cycle, and the signal transmission unit 45 of the sensor microcomputer 15A receives the specific AD trigger signal. Then, the detection signal of the output current detector 22 is transmitted to the overall control microcomputer 31A.
  • the carrier frequency or the PWM calculation cycle is arbitrarily changed in the overall control microcomputer 31A during the operation of the inverter device 1A, synchronization can be achieved and the motor can be controlled normally.
  • the main circuit unit 2 and the control circuit unit 3 are electrically reinforced and insulated, the main circuit unit 2 and the control circuit unit 3 are mechanically separated from each other by a circuit board provided independently. Often configured.
  • the periphery of the sensor microcomputer 15 is also configured separately with its own circuit board, and is configured with a total of three circuit boards.
  • the circuit board 52 of the sensor microcomputer 15 is inserted and connected to a connector 54 provided on the surface of the circuit board 51 of the main circuit unit 2, and the sensor 55 is further connected via a cable 55.
  • the circuit board 52 of the microcomputer 15 and the circuit board 53 of the control circuit unit 3 are connected.
  • the digital photocoupler 5 may be provided on any one of the circuit boards 51, 52, and 53 and connected via electrical wiring. Since the circuit board 52 of the sensor microcomputer 15 can be made relatively small, even if it is connected in such a mechanical arrangement, the entire capacity can be suppressed.
  • the circuit boards 51, 52, and 53 are configured in such a division as shown in FIG. That is, of the main circuit unit 2, the inverter unit 11, the auxiliary unit 12, and the detection unit 13 are mounted on one main circuit board 51, the sensor microcomputer 15 is mounted on the first control board 52, and the overall control microcomputer 31 and the drive microcomputer 32 are mounted on the second control board 53.
  • the main circuit board, the first control board, and the second control board in this section are A type boards corresponding to the first embodiment.
  • the circuit boards 51, 52, and 53 are configured in the sections as shown in FIG. That is, only the overall control microcomputer 31 is mounted on the second control board 53.
  • the main circuit board 51, the first control board 52, and the second control board 53 in this section are B-type boards corresponding to the second embodiment.
  • the inverter device 1 generally has a variety of products lined up according to required specifications such as size, control performance, function, cost, and the like. Therefore, in the third embodiment, the connection configuration between the circuit boards 51, 52, and 53 described above is compatible with both the electrical and mechanical sides of the circuit boards of the corresponding sections, and can be replaced. As a result, a plurality of variations of specifications are provided from the combination.
  • the connection configuration between the circuit boards 51, 52, and 53 in this way has a configuration in which the circuit boards in the corresponding sections are compatible in both electrical and mechanical aspects and can be replaced.
  • the main circuit board, the first control board, and the second control board selected according to the required specifications from a plurality of types of main circuit boards, first control boards, and second control boards prepared in advance. It corresponds to a means that enables the combination of
  • the main circuit board 51, the first control board 52, and the second control board 53 are included.
  • the first control board 52 is detachably connected to the main circuit board 51
  • the second control board 53 is detachably connected to the main circuit board 51 via the first control board 52.
  • the main circuit board 51 and the three main boards including the two control boards 52 and 53 that perform control based on the detection signal are configured to be separable, so that, for example, a plurality of types having different control performances, functions, etc.
  • the main circuit board 51, the first control board 52, and the second control board 53 are prepared, and the main circuit board 51, the first control board 52, and the second control board 53 according to the required specifications are prepared.
  • each product can be configured by combining them after sharing the main board, so compared to the case where each board is individually developed as a dedicated part for each product in the lineup, Development lead time can be greatly shortened.
  • the first control board 52 is erected on the main circuit board 51, so that another board such as an I / O board is erected side by side on the main circuit board 51. It becomes easy to add more, and expandability can be improved. Further, since the second control board 53 is connected to the first control board 52 via the cable 55, the degree of freedom in the arrangement of the second control board 53 can be improved, and the degree of freedom in designing the inverter device 1 can be improved.
  • the induction motor is driven and controlled, but the present invention is not limited to this.
  • the design method regarding the arrangement and functions of the microcomputers 15, 31, and 32 in the main circuit unit 2 and the control circuit unit 3 and the flow of various signals is described above. The same method as in each of the embodiments can be applied.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

La présente invention comprend : une carte de circuit principal (51) pourvue d'une partie circuit principal (2) qui comprend une unité d'onduleur (1), et d'une unité de détection (13) pour détecter une grandeur d'état de la partie circuit principal (2) ; une première carte de commande (52) connectée de façon amovible à la carte de circuit principal (51), la première carte de commande (52) étant pourvue d'un micro-ordinateur de capteur pour effectuer une première commande sur la base d'un signal de détection provenant de l'unité de détection (13) ; et une seconde carte de commande (53) connectée de façon amovible à la carte de circuit principal (51) par l'intermédiaire de la première carte de commande (52), la seconde carte de commande (53) étant pourvue d'un micro-ordinateur de commande intégrée (31) et d'un micro-ordinateur d'attaque (32) pour effectuer une seconde commande sur la base du signal de détection.
PCT/JP2015/076812 2015-09-18 2015-09-18 Dispositif onduleur et procédé de fabrication de dispositif onduleur WO2017046965A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2016550828A JP6099004B1 (ja) 2015-09-18 2015-09-18 インバータ装置及びインバータ装置の製造方法
PCT/JP2015/076812 WO2017046965A1 (fr) 2015-09-18 2015-09-18 Dispositif onduleur et procédé de fabrication de dispositif onduleur
CN201580083003.9A CN108141144B (zh) 2015-09-18 2015-09-18 逆变器装置以及逆变器装置的制造方法

Applications Claiming Priority (1)

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PCT/JP2015/076812 WO2017046965A1 (fr) 2015-09-18 2015-09-18 Dispositif onduleur et procédé de fabrication de dispositif onduleur

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JPS5992774A (ja) * 1982-11-17 1984-05-29 Toshiba Corp インバ−タのｐｗｍ制御方法
JPS6084973A (ja) * 1983-10-14 1985-05-14 Hitachi Ltd 電圧形インバ−タの電流制御方法
JPH1151977A (ja) * 1997-07-31 1999-02-26 Sanyo Electric Co Ltd インバータ回路
JP2001008482A (ja) * 1999-06-22 2001-01-12 Hitachi Ltd 電動機の制御システム及び制御方法
JP2003339168A (ja) * 2002-05-22 2003-11-28 Hitachi Ltd 絶縁駆動型インバータ装置
JP2005033997A (ja) * 1998-09-30 2005-02-03 Hitachi Ltd 電力変換装置
JP2006109603A (ja) * 2004-10-05 2006-04-20 Densei Lambda Kk 無停電電源装置、無停電電源装置の制御方法、無停電電源システム、および、無停電電源用プログラム
JP2006288155A (ja) * 2005-04-04 2006-10-19 Canon Inc 電源装置
JP2009165327A (ja) * 2008-01-10 2009-07-23 Mitsubishi Electric Corp インバータ装置及びその製造方法
JP2010206909A (ja) * 2009-03-03 2010-09-16 Hitachi Automotive Systems Ltd 電力変換装置
WO2011030628A1 (fr) * 2009-09-09 2011-03-17 株式会社安川電機 Circuit d'interface, appareil onduleur, système onduleur et procédé d'émission/réception
JP2012039712A (ja) * 2010-08-05 2012-02-23 Toshiba Schneider Inverter Corp インバータ装置、その周辺機器並びに梱包体

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5992774A (ja) * 1982-11-17 1984-05-29 Toshiba Corp インバ−タのｐｗｍ制御方法
JPS6084973A (ja) * 1983-10-14 1985-05-14 Hitachi Ltd 電圧形インバ−タの電流制御方法
JPH1151977A (ja) * 1997-07-31 1999-02-26 Sanyo Electric Co Ltd インバータ回路
JP2005033997A (ja) * 1998-09-30 2005-02-03 Hitachi Ltd 電力変換装置
JP2001008482A (ja) * 1999-06-22 2001-01-12 Hitachi Ltd 電動機の制御システム及び制御方法
JP2003339168A (ja) * 2002-05-22 2003-11-28 Hitachi Ltd 絶縁駆動型インバータ装置
JP2006109603A (ja) * 2004-10-05 2006-04-20 Densei Lambda Kk 無停電電源装置、無停電電源装置の制御方法、無停電電源システム、および、無停電電源用プログラム
JP2006288155A (ja) * 2005-04-04 2006-10-19 Canon Inc 電源装置
JP2009165327A (ja) * 2008-01-10 2009-07-23 Mitsubishi Electric Corp インバータ装置及びその製造方法
JP2010206909A (ja) * 2009-03-03 2010-09-16 Hitachi Automotive Systems Ltd 電力変換装置
WO2011030628A1 (fr) * 2009-09-09 2011-03-17 株式会社安川電機 Circuit d'interface, appareil onduleur, système onduleur et procédé d'émission/réception
JP2012039712A (ja) * 2010-08-05 2012-02-23 Toshiba Schneider Inverter Corp インバータ装置、その周辺機器並びに梱包体

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CN108141144A (zh) 2018-06-08
CN108141144B (zh) 2020-10-23
JPWO2017046965A1 (ja) 2017-09-14
JP6099004B1 (ja) 2017-03-22

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