WO2010058449A1 - 同期機起動装置 - Google Patents
同期機起動装置 Download PDFInfo
- Publication number
- WO2010058449A1 WO2010058449A1 PCT/JP2008/070900 JP2008070900W WO2010058449A1 WO 2010058449 A1 WO2010058449 A1 WO 2010058449A1 JP 2008070900 W JP2008070900 W JP 2008070900W WO 2010058449 A1 WO2010058449 A1 WO 2010058449A1
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- phase
- synchronous machine
- voltage
- induced voltage
- estimated
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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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/20—Arrangements for starting
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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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
- H02P6/18—Circuit arrangements for detecting position without separate position detecting elements
- H02P6/185—Circuit arrangements for detecting position without separate position detecting elements using inductance sensing, e.g. pulse excitation
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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
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/14—Estimation or adaptation of machine parameters, e.g. flux, current or voltage
- H02P21/18—Estimation of position or speed
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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
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/34—Arrangements for starting
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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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
- H02P6/18—Circuit arrangements for detecting position without separate position detecting elements
- H02P6/181—Circuit arrangements for detecting position without separate position detecting elements using different methods depending on the speed
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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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
- H02P6/18—Circuit arrangements for detecting position without separate position detecting elements
- H02P6/182—Circuit arrangements for detecting position without separate position detecting elements using back-emf in windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2203/00—Indexing scheme relating to controlling arrangements characterised by the means for detecting the position of the rotor
- H02P2203/03—Determination of the rotor position, e.g. initial rotor position, during standstill or low speed operation
Definitions
- the present invention relates to a synchronous machine starting device, and more particularly to a synchronous machine starting device that detects a rotor position of the synchronous machine.
- Synchronous machine starting devices for starting synchronous machines such as generators and motors have been developed.
- a mechanical distributor that detects the position of the rotor of the synchronous machine with a proximity switch or the like is used.
- mechanical distributors are fragile and are susceptible to noise due to the large number of wires.
- the synchronous generator starting device includes a separately-excited converter including a separately-excited element such as a thyristor, and a separately-excited inverter including a separately-excited element such as a thyristor that converts DC power obtained by the converter into AC power. Start the synchronous generator with AC power obtained by the inverter.
- this synchronous generator starting device includes an AC voltage detector for detecting the voltage of the armature terminal of the synchronous generator, an AC current detector for detecting an inverter output current flowing from the inverter to the armature of the synchronous generator, From the detected AC current value of the inverter from the output current detector and the estimated value of the first synchronous generator rotation speed, the induced voltage induced in the armature winding of the synchronous generator by the field current of the synchronous generator , An induced voltage calculation circuit that calculates an in-phase component and a quadrature component with respect to the first reference phase, and a second reference phase that sets the quadrature component of the first reference phase of the induced voltage from the induced voltage calculation circuit to zero.
- a PLL circuit that outputs a second synchronous generator rotational speed estimated value.
- this synchronous generator starting device produces
- the second synchronous generator rotational speed estimated value is input to the first synchronous generator rotational speed estimated value of the induced voltage calculation circuit.
- an object of the present invention is to provide a synchronous machine starting device capable of stably starting a synchronous machine.
- a synchronous machine starting device is a power converter that converts supplied power into AC power and supplies the AC power to an armature of the synchronous machine, and detects an AC voltage supplied to the armature of the synchronous machine.
- An AC voltage detection unit that outputs an AC voltage signal indicating the detected AC voltage
- an AC current detection that detects an AC current supplied to the armature of the synchronous machine and outputs an AC current signal indicating the detected AC current
- a rotor position detection unit that detects the rotor position of the synchronous machine based on the AC voltage signal and the AC current signal, and a power conversion control unit that controls the power conversion unit based on the detected rotor position
- the rotor position detector calculates an induced voltage induced in the armature of the synchronous machine based on the estimated phase indicating the rotor position, the estimated rotational speed of the rotor, the AC voltage signal, and the AC current signal.
- An induction voltage calculation unit that outputs an induced voltage signal
- a selection unit that selects and outputs either an induced voltage signal received from the induction voltage calculation unit or an AC voltage signal received from the AC voltage detection unit
- a selection unit An estimated phase error is calculated based on the received induced voltage signal or AC voltage signal, an estimated phase and an estimated rotational speed are calculated based on the calculated phase error, and a speed signal indicating the calculated estimated rotational speed is calculated as an induced voltage.
- a feedback calculation unit that outputs a position signal indicating the calculated estimated phase to the power conversion control unit and the induced voltage calculation unit.
- a synchronous machine starting device includes a power conversion unit that converts supplied power into AC power and supplies the AC power to the armature of the synchronous machine, and an AC supplied to the armature of the synchronous machine.
- AC voltage detector for detecting voltage
- AC current detector for detecting AC current supplied to the armature of the synchronous machine, and detecting the rotor position of the synchronous machine based on the detected AC voltage and AC current
- a power conversion control unit that controls the power conversion unit based on the detected rotor position, the rotor position detection unit including an estimated phase indicating the rotor position,
- an induced voltage calculation unit that calculates an induced voltage of the first phase and an induced voltage of the second phase induced in the armature of the synchronous machine, and calculated Phase 1 induced voltage and second phase
- a feedback calculation unit that calculates an estimated phase error based on the induced voltage, calculates an estimated phase and an estimated rotation speed based on the calculated phase error
- the feedback calculation unit calculates a phase error based on a result of division using the induced voltage of the first phase as a dividend and the induced voltage of the second phase as a divisor, and calculates the induced voltage of the first phase. It is possible to switch the calculation of the phase error based on the result of division with the divisor fixed to a predetermined value.
- a synchronous machine starting device includes a power conversion unit that converts supplied power into AC power and supplies the AC power to the armature of the synchronous machine, and an AC supplied to the armature of the synchronous machine.
- An AC voltage detector that detects voltage
- an AC current detector that detects AC current supplied to the armature of the synchronous machine, and detects the rotor position of the synchronous machine based on the detected AC voltage and AC current.
- a power conversion control unit that controls the power conversion unit based on the detected rotor position, the rotor position detection unit including an estimated phase indicating the rotor position, Based on the estimated rotational speed and the detected AC voltage and AC current, an induced voltage calculation unit that calculates an induced voltage of the first phase and an induced voltage of the second phase induced in the armature of the synchronous machine, and calculated Phase 1 induced voltage and second phase
- a feedback calculation unit that calculates an error of the estimated phase based on the induced voltage, calculates an estimated phase and an estimated rotation speed based on the calculated phase error, and outputs a position signal indicating the calculated estimated phase to the power conversion control unit
- the feedback calculation unit calculates the estimated rotational speed by amplifying the calculated phase error, calculates the estimated phase by integrating the calculated estimated rotational speed, and can switch the gain in amplification. .
- the synchronous machine can be started stably.
- FIG. 3 is a diagram illustrating a configuration of a rotor position detection unit 11. It is a figure which shows the structure of the PLL circuit in the synchronous machine starting device which concerns on the 2nd Embodiment of this invention. It is a figure which shows the structure of the error amplification part in the synchronous machine starting device which concerns on the 3rd Embodiment of this invention.
- FIG. 1 is a diagram showing the configuration of the synchronous machine starting device according to the first embodiment of the present invention.
- a synchronous machine starting device 101 includes a power conversion unit 71, an AC voltage detector 8, an AC current detector 9, a rotor position detection unit 11, an inverter control unit (power conversion control unit). 19).
- the power conversion unit 71 includes a converter 1, an inverter 2, and a DC reactor 3.
- the inverter control unit 19 includes a reference sine wave calculator 12, a gate pulse generator 13, and a ⁇ command circuit 14.
- the synchronous machine 4 and the motor M are connected via an axis SH.
- the synchronous machine 4 is a synchronous generator or a synchronous motor, for example, and has an armature and a rotor.
- the motor M rotates at a predetermined speed when the synchronous machine 4 is on standby. This rotational speed is low, for example several rpm. On the other hand, the normal rotation speed is 3000 rpm to 3600 rpm. For this reason, the voltage applied to the armature of the synchronous machine 4 at the time of start-up is very small as 1/1000 of the steady state as described above, and the detection voltage by the AC voltage detector 8 is often distorted. It is difficult to detect accurately.
- Converter 1 is composed of an element such as a thyristor, and converts AC power from AC power supply e1 into DC power.
- the inverter 2 is composed of an element such as a thyristor, and drives the synchronous machine 4 by converting DC power obtained by the converter 1 into AC power and supplying it to the armature of the synchronous machine 4.
- the converter 1 and the inverter 2 are connected via a DC reactor 3.
- the AC side of the inverter 2 is connected to the armature of the synchronous machine 4.
- the AC voltage detector 8 detects the three-phase AC voltage supplied to the armature of the synchronous machine 4 and outputs the voltage detection values V1, V2, and V3 to the rotor position detection unit 11.
- the alternating current detector 9 detects a three-phase alternating current supplied to the armature of the synchronous machine 4 and outputs detected current values I1, I2, and I3 to the rotor position detector 11.
- the rotor position detector 11 detects the rotor position (phase) of the synchronous machine 4 based on the detection values received from the AC voltage detector 8 and the AC current detector 9, and the rotor position of the synchronous machine 4. Is output to the inverter control unit 19.
- the inverter control unit 19 controls the inverter 2 based on the rotor position signal POS received from the rotor position detection unit 11.
- the reference sine wave calculator 12 outputs a reference sine wave sin ⁇ based on the position signal POS received from the rotor position detection unit 11.
- the ⁇ command circuit 14 calculates the control advance angle command value ⁇ and outputs it to the gate pulse generator 13.
- Gate pulse generator 13 outputs a gate pulse to the elements in inverter 2 based on reference sine wave sin ⁇ received from reference sine wave calculator 12 and control advance angle command value ⁇ received from ⁇ command circuit 14. .
- FIG. 2 is a diagram illustrating a configuration of the rotor position detection unit 11.
- rotor position detection unit 11 includes an induced voltage calculation unit 61, a PLL circuit (feedback calculation unit) 34, and a selection unit SEL.
- the induced voltage calculation unit 61 includes three-phase to two-phase conversion circuits 31 and 32 and an induced voltage calculation circuit 33.
- the induced voltage calculation unit 61 includes an estimated phase indicating the rotor position of the synchronous machine 4, an estimated rotational speed of the rotor of the synchronous machine 4, voltage detection values V 1, V 2, V 3 received from the AC voltage detector 8 and AC current detection. Based on the current detection values I1, I2, and I3 received from the generator 9, the induced voltage induced in the armature of the synchronous machine 4 is calculated, and the calculated induced voltage values Zq and Zd are output.
- the selection unit SEL selects and outputs one of the induced voltage values Zq and Zd received from the induced voltage calculation circuit 33 and the voltage values Vd and Vq received from the three-phase / two-phase conversion circuit 31.
- the PLL circuit 34 calculates an error of the estimated phase based on the induced voltage values Zq and Zd received from the selection unit SEL or the voltage values Vd and Vq. Then, the PLL circuit 34 calculates an estimated phase and an estimated rotation speed based on the calculated phase error, outputs a speed signal ⁇ indicating the calculated estimated rotation speed to the induced voltage calculation unit 61, and calculates the calculated estimated phase.
- the position signal ⁇ shown is output to the inverter control unit 2 and the induced voltage calculation unit 61.
- the induced voltage calculation unit 61 receives the speed signal ⁇ and the position signal ⁇ received from the PLL circuit 34, the voltage detection values V1, V2, V3 newly received from the AC voltage detector 8, and the new AC current detector 9. An induced voltage induced in the armature of the synchronous machine 4 is newly calculated based on the received current detection values I1, I2, and I3.
- the three-phase to two-phase conversion circuit 31 performs three-phase to two-phase conversion (dq conversion) on the detected voltage values V1, V2, and V3 received from the AC voltage detector 8 based on the reference phase ⁇ . .
- the three-phase to two-phase conversion circuit 32 performs three-phase to two-phase conversion (dq conversion) on the current detection values I1, I2, and I3 received from the AC current detector 9 based on the reference phase ⁇ .
- the induced voltage calculation circuit 33 is based on the voltage values Vd and Vq that have been three-phase to two-phase converted by the three-phase to two-phase conversion circuit 31 and the current values Id and Iq that have been three-phase to two-phase converted by the three-phase to two-phase conversion circuit 32. Thus, the two-phase induced voltage induced in the armature of the synchronous machine 4 is calculated.
- the three-phase two-phase conversion circuits 31 and 32 are given an initial value of the reference phase ⁇ when the synchronous machine starting device 101 is started, and coordinate conversion is performed. To do.
- the induced voltage calculation circuit 33 is based on the d-axis (in-phase) of the synchronous machine 4 based on the voltage values Vd, Vq and current values Id, Iq on the dq axis converted by the three-phase two-phase conversion circuits 31 and 32. Component) The induced voltage of the armature on the -q axis (orthogonal component) is calculated.
- the rotational speed ⁇ is required, but since there is no position sensor, the initial value of the rotational speed ⁇ of the synchronous machine 4 is given to the induced voltage calculation circuit 33 when the synchronous machine starting device 101 is started. It is done.
- the synchronous machine starting device is provided with a PLL circuit 34 that performs control so that the q-axis component Zq of the induced voltage becomes zero.
- the PLL circuit 34 calculates the rotational speed ⁇ that causes the q-axis component Zq of the induced voltage to become zero, that is, the estimated rotational speed of the rotor of the synchronous machine 4, and the reference phase ⁇ , that is, the estimated phase of the rotor of the synchronous machine 4. To do.
- the reference phase ⁇ calculated by the PLL circuit 34 is fed back to the three-phase / two-phase conversion circuits 31 and 32 and is output to the inverter control unit 19 as the position signal POS. Thereafter, the three-phase / two-phase conversion circuits 31 and 32 perform the three-phase / two-phase conversion based on the reference phase ⁇ from the PLL circuit 34.
- the rotation speed ⁇ calculated by the PLL circuit 34 is given to the induced voltage calculation circuit 33.
- the induced voltage calculation circuit 33 thereafter calculates an induced voltage value (in-phase component) Zd and an induced voltage value (orthogonal component) Zq based on the rotational speed ⁇ from the PLL circuit 34.
- the induced voltage calculation circuit 33 is based on the voltage values Vd and Vq converted by the three-phase two-phase conversion circuit 31 and the current values Id and Iq converted by the three-phase two-phase conversion circuit 32.
- the induced voltage induced in the armature 4 is calculated.
- the voltage supplied to the armature of the synchronous machine 4 at the time of start-up is very small, for example, 1/1000 compared to the rated voltage in the steady state. Further, since the frequency of the current supplied to the armature of the synchronous machine 4 at the time of startup is low, the detection error of the AC current detector 9 may become large in the low frequency range.
- the induced voltage is calculated based on the very small voltage values Vd and Vq and the large current values Id and Iq in the induced voltage calculation circuit 33, the induced voltage calculated by the induced voltage calculation circuit 33 and the actual voltage are calculated. In addition, the difference from the voltage induced in the armature of the synchronous machine 4 becomes very large.
- the selection unit SEL is provided. That is, the selection unit SEL outputs the voltage values Vd and Vq converted by the three-phase / two-phase conversion circuit 31 to the PLL circuit 34 as the selection voltage values Sd and Sq based on the rotational speed ⁇ received from the PLL circuit 34. Or whether to output the induced voltage values Zd and Zq calculated by the induced voltage calculation circuit 33 to the PLL circuit 34 as the selection voltage values Sd and Sq.
- the selection unit SEL bypasses the induced voltage calculation circuit 33 and directly supplies the voltage values Vd and Vq to the PLL circuit 34 when the synchronous machine 4 is started, that is, when the rotational speed ⁇ is less than a predetermined value.
- the selection unit SEL gives the induced voltage values Zd and Zq to the PLL circuit 34 when the rotational speed ⁇ of the synchronous machine 4 becomes equal to or higher than a predetermined value.
- the selection unit SEL is configured to select one of the voltage values Vd and Vq and the induced voltage values Zd and Zq based on the rotational speed ⁇ received from the PLL circuit 34.
- the selection unit SEL is not limited thereto. is not.
- Selection unit SEL may be configured to perform selection based on the square root of the sum of the square of voltage value Vd and the square of Vq, for example. Further, since the voltage value Vq is very small as compared with the voltage value Vd, a configuration in which selection is performed simply based on the voltage value Vd may be employed.
- the voltage supplied to the armature of the synchronous machine 4 is small and the current supplied to the armature of the synchronous machine 4 is detected.
- the induced voltage calculation circuit 33 is bypassed, and the estimated rotational speed of the rotor of the synchronous machine 4 and the estimated phase of the rotor of the synchronous machine 4 are calculated based on the voltage values Vd and Vq. To do.
- errors in the estimated rotational speed and estimated phase of the rotor of the synchronous machine at the time of startup can be reduced, so that the synchronous machine can be started up stably.
- the power converter 71 is configured to include the converter 1, the inverter 2, and the DC reactor 3, but the present invention is limited to this. It is not a thing.
- the power conversion unit 71 may include a circuit such as a matrix converter that converts the supplied power into AC power and supplies it to the armature of the synchronous machine 4 instead of the converter 1, the inverter 2, and the DC reactor 3. That's fine.
- the present embodiment relates to a synchronous machine starting device to which a function for accurately performing the operation of the PLL circuit is added as compared with the synchronous machine starting device according to the first embodiment.
- the contents other than those described below are the same as those of the synchronous machine starting device according to the first embodiment.
- FIG. 3 is a diagram showing a configuration of a PLL circuit in the synchronous machine starting device according to the second embodiment of the present invention.
- the PLL circuit 34 includes a division unit 41, a clamp unit 42, an error amplification unit 43, and an integration unit 44.
- the division unit 41 performs division using the selection voltage value Sq received from the selection unit SEL as a dividend and the selection voltage value Sd as a divisor.
- the division result DIV is not zero, the estimated phase calculated by the PLL circuit 34 is shifted from the actual rotor phase of the synchronous machine 4.
- the division result DIV corresponds to an error in the estimated phase of the rotor in the synchronous machine 4.
- phase estimation is achieved by controlling the PLL circuit 34 so that Zq becomes zero.
- the voltage induced in the armature of the synchronous machine 4 increases as the rotational speed of the synchronous machine 4 increases.
- the voltage induced in the armature of the synchronous machine 4 is small immediately after the start of the synchronous machine 4 and at a low speed during the speed increase. Therefore, at low speed and high speed, the magnitude of the induced voltage value Zq is larger at high speed even if the phase error is the same.
- the error amplification unit 43 receives the induced voltage value Zq that varies depending on the rotation speed of the synchronous machine 4, so that the phase tracking performance of the PLL circuit 34 is that of the synchronous machine 4. It will change depending on the rotation speed.
- the PLL circuit 34 cannot follow the phase change of the synchronous machine 4, and the rotation of the synchronous machine 4 and the synchronous machine starting device 101 May be out of sync with.
- the error amplification unit 43 is not the induced voltage value Zq but Zq / Zd or tan ⁇ 1. It can be set as the structure which receives (Zq / Zd). Therefore, it is possible to improve the response of the PLL circuit 34 at a low speed with a small induced voltage. Note that the calculation accuracy can be improved by adopting a configuration in which the error amplifying unit 43 receives tan ⁇ 1 (Zq / Zd) and performs the calculation. Further, by adopting a configuration in which the error amplifying unit 43 receives Zq / Zd and performs the calculation, the calculation process can be simplified.
- PLL circuit 34 performs division using selection voltage value Sq received from selection unit SEL as a dividend and selection voltage value Sd as a divisor. , And the selection voltage value Sq received from the selection unit SEL is used as a dividend, and the division is fixed with the divisor fixed to a predetermined value.
- the clamp unit 42 clamps the selection voltage value Sd to a predetermined value and outputs the clamped voltage value Sd to the division unit 41.
- the clamping unit 42 determines whether to output the selection voltage value Sd received from the selection unit SEL to the division unit 41 or to output a predetermined value to the division unit 41 based on the rotational speed ⁇ received from the PLL circuit 34. It may be configured to switch.
- the division unit 41 performs division using the selection voltage value Sq received from the selection unit SEL as a dividend and the voltage received from the clamp unit 42 as a divisor, and outputs the division result DIV to the error amplification unit 43.
- the error amplifying unit 43 calculates the estimated rotation speed of the rotor in the synchronous machine 4 by amplifying the phase error calculated by the division result DIV, that is, the division result DIV received from the division unit 41, and outputs it as the rotation speed ⁇ . .
- the error amplifying unit 43 proportionally integrates the division result DIV, for example.
- the integrating unit 44 calculates the estimated phase of the rotor in the synchronous machine 4 by integrating the rotational speed ⁇ received from the error amplifying unit 43 and outputs it as the reference phase ⁇ .
- the detection error is large.
- the d-axis component Zd of the induced voltage has a larger value than the q-axis component Zq
- the error of the d-axis component Zd is calculated as a phase error by the division unit 41, that is, the selection voltage value Sq / selection voltage value Sd. Large impact on computation.
- a clamp unit 42 is provided in the synchronous machine starting device according to the second embodiment of the present invention. Accordingly, the selection voltage value Sd corresponding to the d-axis component Zd is clamped to a predetermined value, so that a voltage less than the predetermined value is not output to the division unit 41. With such a configuration, it is possible to prevent a phase error calculation of the rotor of the synchronous machine from being greatly mistaken at the time of startup, so that the synchronous machine 4 can be started up stably.
- the present embodiment relates to a synchronous machine starting device to which a function for accurately performing PI calculation is added as compared with the synchronous machine starting device according to the first embodiment.
- the contents other than those described below are the same as those of the synchronous machine starting device according to the second embodiment.
- FIG. 4 is a diagram showing a configuration of an error amplifying unit in the synchronous machine starting device according to the third embodiment of the present invention.
- error amplifying unit 43 includes a gain multiplying unit 51, an adding unit 52, and an integrating unit 53.
- the gain multiplication unit 51 multiplies the division result DIV received from the division unit 41 and the gain K1.
- the integrating unit 53 integrates the division result DIV received from the dividing unit 41 based on the gain K2.
- the addition unit 52 adds the multiplication result of the gain multiplication unit 51 and the integration result of the integration unit 53, and outputs the result as a rotation speed ⁇ .
- the gain multiplication unit 51 switches the gain K1 when the synchronous machine 4 is activated and when it is stationary. Further, the integrating unit 53 switches the gain K2 when the synchronous machine 4 is activated and when it is stationary. For example, since the voltage value received by the PLL circuit 34 when the synchronous machine 4 is started is small and the detection error is large, the gains K1 and K2 are reduced. Thereby, the influence of detection error can be reduced.
- the acceleration of the synchronous machine 4 is large when the synchronous machine 4 is started up, it may be required to make the PLL circuit 34 follow faster even if there is some detection error.
- the gain K1 is increased to increase the response of the PLL circuit 34, and the gain K2 is further decreased so that the detection error is not greatly amplified.
- the balance between the starting speed of the synchronous machine 4 and the phase error detection accuracy is adjusted by switching the gains of the gain multiplier 51 and the integrator 53. It becomes possible to do.
Abstract
Description
図1は、本発明の第1の実施の形態に係る同期機起動装置の構成を示す図である。
図2を参照して、回転子位置検出部11は、誘起電圧演算部61と、PLL回路(フィードバック演算部)34と、選択部SELとを含む。誘起電圧演算部61は、三相二相変換回路31および32と、誘起電圧演算回路33とを含む。
本実施の形態は、第1の実施の形態に係る同期機起動装置と比べてPLL回路の演算を正確に行なうための機能を追加した同期機起動装置に関する。以下で説明する内容以外は第1の実施の形態に係る同期機起動装置と同様である。
本実施の形態は、第1の実施の形態に係る同期機起動装置と比べてPI演算を正確に行なう機能を追加した同期機起動装置に関する。以下で説明する内容以外は第2の実施の形態に係る同期機起動装置と同様である。
Claims (4)
- 供給された電力を交流電力に変換して同期機(4)の電機子に供給する電力変換部(71)と、
前記同期機(4)の電機子に供給される交流電圧を検出し、前記検出した交流電圧を示す交流電圧信号を出力する交流電圧検出部(8)と、
前記同期機(4)の電機子に供給される交流電流を検出し、前記検出した交流電流を示す交流電流信号を出力する交流電流検出部(9)と、
前記交流電圧信号および前記交流電流信号に基づいて、前記同期機(4)の回転子位置を検出する回転子位置検出部(11)と、
前記検出された回転子位置に基づいて、前記電力変換部(71)を制御する電力変換制御部(19)とを備え、
前記回転子位置検出部(11)は、
前記回転子位置を示す推定位相、前記回転子の推定回転速度、前記交流電圧信号および前記交流電流信号に基づいて前記同期機(4)の電機子に誘起される誘起電圧を算出し、前記算出した誘起電圧を示す誘起電圧信号を出力する誘起電圧演算部(61)と、
前記誘起電圧演算部(61)から受けた前記誘起電圧信号および前記交流電圧検出部(8)から受けた前記交流電圧信号のいずれかを選択して出力する選択部(SEL)と、
前記選択部(SEL)から受けた前記誘起電圧信号または前記交流電圧信号に基づいて前記推定位相の誤差を算出し、前記算出した位相誤差に基づいて前記推定位相および前記推定回転速度を算出し、前記算出した推定回転速度を示す速度信号を前記誘起電圧演算部(61)へ出力し、かつ前記算出した推定位相を示す位置信号を前記電力変換制御部(19)および前記誘起電圧演算部(61)へ出力するフィードバック演算部(34)とを含む同期機起動装置。 - 供給された電力を交流電力に変換して同期機(4)の電機子に供給する電力変換部(71)と、
前記同期機(4)の電機子に供給される交流電圧を検出する交流電圧検出部(8)と、
前記同期機(4)の電機子に供給される交流電流を検出する交流電流検出部(9)と、
前記検出された交流電圧および交流電流に基づいて、前記同期機(4)の回転子位置を検出する回転子位置検出部(11)と、
前記検出された回転子位置に基づいて、前記電力変換部(71)を制御する電力変換制御部(19)とを備え、
前記回転子位置検出部(11)は、
前記回転子位置を示す推定位相、前記回転子の推定回転速度ならびに前記検出された交流電圧および交流電流に基づいて、前記同期機(4)の電機子に誘起される第1相の誘起電圧および第2相の誘起電圧を算出する誘起電圧演算部(61)と、
前記算出された第1相の誘起電圧および第2相の誘起電圧に基づいて前記推定位相の誤差を算出し、前記算出した位相誤差に基づいて前記推定位相および前記推定回転速度を算出し、前記算出した推定位相を示す位置信号を前記電力変換制御部(19)へ出力するフィードバック演算部(34)とを含み、
前記フィードバック演算部(34)は、前記第1相の誘起電圧を被除数とし、前記第2相の誘起電圧を除数として除算を行なった結果に基づいて前記位相誤差を算出する同期機起動装置。 - 前記フィードバック演算部(34)は、前記第1相の誘起電圧を被除数とし、前記第2相の誘起電圧を除数として除算を行なった結果に基づいて前記位相誤差を算出すること、および前記第1相の誘起電圧を被除数とし、前記除数を所定値に固定して除算を行なった結果に基づいて前記位相誤差を算出することを切り替え可能である請求の範囲第2項に記載の同期機起動装置。
- 供給された電力を交流電力に変換して同期機(4)の電機子に供給する電力変換部(71)と、
前記同期機(4)の電機子に供給される交流電圧を検出する交流電圧検出部(8)と、
前記同期機(4)の電機子に供給される交流電流を検出する交流電流検出部(9)と、
前記検出された交流電圧および交流電流に基づいて、前記同期機(4)の回転子位置を検出する回転子位置検出部(11)と、
前記検出された回転子位置に基づいて、前記電力変換部(71)を制御する電力変換制御部(19)とを備え、
前記回転子位置検出部(11)は、
前記回転子位置を示す推定位相、前記回転子の推定回転速度ならびに前記検出された交流電圧および交流電流に基づいて、前記同期機(4)の電機子に誘起される第1相の誘起電圧および第2相の誘起電圧を算出する誘起電圧演算部(61)と、
前記算出された第1相の誘起電圧および第2相の誘起電圧に基づいて前記推定位相の誤差を算出し、前記算出した位相誤差に基づいて前記推定位相および前記推定回転速度を算出し、前記算出した推定位相を示す位置信号を前記電力変換制御部(19)へ出力するフィードバック演算部(34)とを含み、
前記フィードバック演算部(34)は、前記算出した位相誤差を増幅することにより前記推定回転速度を算出し、前記算出した前記推定回転速度を積分することにより前記推定位相を算出し、かつ前記増幅におけるゲインを切り替え可能である同期機起動装置。
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EP08878246.1A EP2357722B1 (en) | 2008-11-18 | 2008-11-18 | Synchronous machine starting device |
JP2010539060A JP5421287B2 (ja) | 2008-11-18 | 2008-11-18 | 同期機起動装置 |
EP14181990.4A EP2824827B1 (en) | 2008-11-18 | 2008-11-18 | Synchronous-machine starting device |
PCT/JP2008/070900 WO2010058449A1 (ja) | 2008-11-18 | 2008-11-18 | 同期機起動装置 |
US13/129,993 US8531144B2 (en) | 2008-11-18 | 2008-11-18 | Synchronous-machine starting device |
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DE102010020215A1 (de) * | 2010-05-12 | 2011-11-17 | Andreas Stihl Ag & Co. Kg | Verfahren zum Betrieb eines elektronisch kommutierten Elektromotors sowie Vorrichtung zur Durchführung des Verfahrens |
US9048770B2 (en) | 2010-10-15 | 2015-06-02 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | Synchronous machine starting device |
US11028812B2 (en) | 2016-07-27 | 2021-06-08 | Astronics Advanced Electronic Systems Corp. | Integrated brushless starter generator |
EP3644498A4 (en) * | 2017-06-21 | 2020-12-30 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | THYRISTOR STARTER |
KR102357119B1 (ko) * | 2020-10-16 | 2022-02-07 | 한국전력공사 | 동기기 정지중 기동장치 제어루프 튜닝 시스템 및 방법 |
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JP2002272194A (ja) * | 2001-03-08 | 2002-09-20 | Hitachi Ltd | 同期電動機の駆動装置 |
JP2003259699A (ja) * | 2002-03-06 | 2003-09-12 | Toshiba Corp | 電力変換装置 |
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EP2357722B1 (en) | 2020-01-08 |
EP2357722A1 (en) | 2011-08-17 |
EP2824827A2 (en) | 2015-01-14 |
EP2824827B1 (en) | 2019-07-03 |
US20110254491A1 (en) | 2011-10-20 |
EP2824827A3 (en) | 2015-01-28 |
EP2357722A4 (en) | 2014-06-25 |
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