CN109995305B - Moment input control method, device and equipment of compressor and refrigerator - Google Patents
Moment input control method, device and equipment of compressor and refrigerator Download PDFInfo
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- CN109995305B CN109995305B CN201910348240.3A CN201910348240A CN109995305B CN 109995305 B CN109995305 B CN 109995305B CN 201910348240 A CN201910348240 A CN 201910348240A CN 109995305 B CN109995305 B CN 109995305B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
- H02P27/12—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation pulsing by guiding the flux vector, current vector or voltage vector on a circle or a closed curve, e.g. for direct torque control
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Abstract
The embodiment of the invention discloses a moment input control method, a moment input control device, moment input control equipment and a refrigerator of a compressor, wherein the method comprises the following steps: the method comprises the steps of performing phase locking on the accessed commercial power to acquire phase information of the commercial power; acquiring the speed loop output of the compressor control system, and forming a torque input signal according to the speed loop output and the phase information of the commercial power; adjusting an output of the inverter in combination with the speed loop output based on the torque input signal to control operation of the compressor. By the method, the compressor can be in a stable and reliable high-rotating-speed state, the cost of the frequency conversion plate can be greatly saved, and the application value of the product is improved.
Description
Technical Field
The invention relates to the technical field of electronics, in particular to a moment input control method, a moment input control device, moment input control equipment and a refrigerator of a compressor.
Background
At present, most of refrigerator compressors adopt a traditional frequency conversion control method, an electrolytic capacitor with a large capacitance value is needed to support the voltage of a direct-current bus after rectification, and a high enough chopping voltage is provided for an inverter. In recent years, the driving system of the compressor without electrolytic capacitor has become a research hotspot of experts at home and abroad due to the superiority of the technology without electrolytic capacitor in the aspects of reliability, cost and the like.
A control method for a compressor of a refrigerator without an electrolytic capacitor at the present stage mainly adds an output power regulation strategy, adopts a Quasi-proportional resonance (QPR) controller to enable power output to have a pulsating effect and indirectly offset fluctuation of a direct current bus, but the method is complex in control, needs an auxiliary circuit, has high requirements on accuracy of signal acquisition and is poor in controllability.
Disclosure of Invention
The embodiment of the invention provides a moment input control method, a moment input control device, moment input control equipment and a refrigerator of a compressor, which can improve the stability of the compressor during high-speed operation and reduce the cost.
A torque input control method of a compressor is applied to a compressor control system, and the system comprises an inverter and a torque input control device, wherein the inverter is used for outputting electric energy to the compressor; the method comprises the following steps:
the method comprises the steps of performing phase locking on the accessed commercial power to acquire phase information of the commercial power;
acquiring the speed loop output of the compressor control system, and forming a torque input signal according to the speed loop output and the phase information of the commercial power;
adjusting an output of the inverter in combination with the speed loop output based on the torque input signal to control operation of the compressor.
Optionally, in one embodiment, the forming a torque input signal according to the phase information of the speed loop output and the commercial power includes:
and determining the torque input signal according to a sine proportional function formed by the phase information of the speed loop output and the commercial power.
Optionally, in one embodiment, the determining the torque input signal according to a sinusoidal proportional function formed by the speed loop output and the phase information of the commercial power includes:
according to the formula:
M＝Asin2(ωint+γ)
determining the torque input signal, where M is the torque input signal and A is the speed loop output gain, ωint + gamma is the phase information of the mains supply, omegainThe angular frequency of the voltage of the power grid and gamma is the initial phase.
Optionally, in one embodiment, the compressor control system further comprises a controller;
the regulating the output of the inverter in combination with the speed loop output in accordance with the torque input signal includes:
the torque input signal is input to the controller, the speed loop output is coupled with the torque input signal based on the controller to be given as the torque of a current loop, and the output of the inverter is controlled through current loop operation, inverse transformation operation and space vector pulse width modulation in sequence to control the operation of the compressor.
Optionally, in one embodiment, the method further includes:
converting the commercial power into direct-current voltage after passing through a rectifying circuit;
and forming a bus voltage by combining the direct-current voltage with a load, wherein the bus voltage is used for providing a chopping voltage for the inverter.
A torque input control apparatus of a compressor, comprising:
the phase acquisition module is used for carrying out phase locking on the accessed commercial power and acquiring the phase information of the commercial power;
the moment forming module is used for acquiring the speed loop output of the compressor control system and forming a moment input signal according to the speed loop output and the phase information of the commercial power;
and the output adjusting module is used for combining the output of the speed ring output adjusting inverter according to the torque input signal so as to control the operation of the compressor.
Optionally, in one embodiment, the output adjusting module is specifically configured to:
the torque input signal is input to the controller, the speed loop output is coupled with the torque input signal based on the controller to be given as the torque of a current loop, and the output of the inverter is controlled through current loop operation, inverse transformation operation and space vector pulse width modulation in sequence to control the operation of the compressor.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method.
A torque input control apparatus of a compressor, comprising a controller having a computer program stored therein, the computer program, when executed by the controller, causing the controller to perform the steps of the method described above.
A refrigerator comprises the moment input control device of the compressor.
The embodiment of the invention has the following beneficial effects:
according to the torque input control method, the torque input control device, the torque input control equipment and the refrigerator of the compressor, phase locking is carried out on the accessed commercial power, and phase information of the commercial power is obtained; acquiring the speed loop output of the compressor control system, and forming a torque input signal according to the speed loop output and the phase information of the commercial power; adjusting an output of the inverter in combination with a speed loop output based on the torque input signal to control operation of the compressor. The method enables the power output to have a pulsation effect by inputting the torque input signal to the compressor control system, and enables the compressor to be in a stable and reliable high-rotating-speed state under the condition of no electrolytic capacitor with a large capacitance value, thereby ensuring the working stability of the compressor.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Wherein:
FIG. 1 is a flow chart of a torque input control method of a compressor in one embodiment;
FIG. 2 is a schematic diagram of the effect of the bus capacitance on the bus voltage in one embodiment;
FIG. 3 is a schematic diagram of a compressor control system in accordance with one embodiment;
FIG. 4 is a block diagram of torque injection control in one embodiment;
fig. 5 is a block diagram showing a torque input control apparatus of a compressor in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first application may be referred to as a second application, and similarly, the second application may be the first application, without departing from the scope of the present application. The first application and the second application are both applications, but they are not the same application.
Fig. 1 is a flowchart of a torque input control method of a compressor in an embodiment, which is applied to a compressor control system, and more particularly, to a compressor control system without an electrolytic capacitor. For example, a compressor control system of a refrigerator, it is understood that the present invention may be applied to a compressor control system of other electric appliances, such as an air conditioner. The system comprises an inverter, wherein the inverter is used for outputting electric energy to the compressor, specifically, the inverter can convert direct current electric energy into alternating current electric energy and can provide three-phase alternating current electric energy to the compressor. The torque input control method of the compressor provided by the embodiment can improve the stability of the compressor in high-speed operation and reduce the cost. As shown in fig. 1, the method includes the following steps 102 to 106:
step 102: and carrying out phase locking on the accessed commercial power to acquire the phase information of the commercial power.
Specifically, the utility power refers to power frequency alternating current, and can be characterized by three common quantities of alternating current: voltage, current, frequency; the commercial power of the present embodiment refers to 220V/50Hz alternating current. Phase locking refers to a technique for causing the phase of a controlled oscillator to be controlled by a standard signal or an extraneous signal to achieve phase synchronization with the extraneous signal or to track the frequency or phase of the extraneous signal. The embodiment acquires the frequency, the phase and other information of the commercial power through a phase locking technology, and acquires useful phase information of the commercial power through phase locking of the commercial power so as to construct the torque.
Step 104: and acquiring the speed loop output of the compressor control system, and combining the speed loop output with the phase information of the commercial power to form a torque input signal.
The compressor is a driven fluid machine for lifting low-pressure gas into high-pressure gas, and after the compressor is driven by the operation of a motor to compress a piston, high-temperature and high-pressure refrigerant gas is discharged to an exhaust pipe to provide power for a refrigeration cycle. The speed loop refers to a loop for controlling the motion of a servo motor in a compressor control system, and the speed loop is output to a current loop of the compressor control system after proportional-derivative-integral (PID) adjustment is performed on a difference value obtained by comparing an input value with a speed loop feedback value in the speed loop.
The present embodiment forms a torque input signal according to the phase information of the commercial power combined with the output of the speed loop. Specifically, the torque input signal may be determined according to a sinusoidal proportional function formed by the output of the speed loop and the phase information of the utility power. For example, the speed loop outputs a gain as a sine proportional function, the phase information of the commercial power is used as the phase of the sine proportional function, and the torque input signal is calculated through the sine proportional function.
Step 106: adjusting an output of the inverter in combination with a speed loop output based on the torque input signal to control operation of the compressor.
Specifically, because the speed loop is output to the current loop after being subjected to PID adjustment, and a difference value obtained by comparing an input value of the current loop with a feedback value of the current loop is output to the motor after being subjected to PID adjustment in the current loop, in this embodiment, a torque input signal is added between the speed loop and the current loop, an error between a given speed and a feedback speed passes through the speed loop, an output of the speed loop is coupled with a torque injection signal to serve as a torque given of the current loop, and the output of the inverter is controlled through current loop operation, inverse transformation operation, and Space Vector Pulse Width Modulation (SVPWM) in sequence, so as to control the operation of the compressor.
According to the torque input control method of the compressor, phase locking is carried out on the accessed commercial power, and phase information of the commercial power is obtained; acquiring the speed loop output of the compressor control system, and forming a torque input signal according to the speed loop output and the phase information of the commercial power; adjusting an output of the inverter in combination with a speed loop output based on the torque input signal to control operation of the compressor. The method inputs the torque input signal to the compressor control system without the electrolytic capacitor, so that the power output has a pulsating effect, and the compressor can be in a stable and reliable high-rotating-speed state under the condition of no electrolytic capacitor with a large capacitance value, thereby ensuring the working stability of the compressor.
In one embodiment, the torque input control method of a compressor further includes: converting the commercial power into direct-current voltage after passing through a rectifying circuit; and forming a bus voltage by combining the direct-current voltage with a load, wherein the bus voltage is used for being provided for the inverter to carry out chopping.
Wherein chopping refers to the process of converting direct current to direct current of another fixed or adjustable voltage. Specifically, the commercial power passes through a rectifying circuit, converts alternating current into direct current, and forms a bus voltage after loading, and the bus voltage is used for providing a chopping voltage for the inverter.
Because there is not big electrolytic capacitor, so the busbar voltage that forms after the area carries has the pulsation characteristic, as shown in fig. 2, after the motor runs, there is not the support of large capacity electrolytic capacitor, busbar voltage can fluctuate with the power frequency of 2 doubling, along with the reduction of the appearance value of busbar capacitor, this kind of pulsation amplitude of busbar will be more obvious. In the embodiment, the output is adjusted by increasing the torque input signal, and the output torque pulsation of the motor is controlled to compensate the pulsation of the bus voltage, so that the power output has a pulsation effect and the fluctuation of the direct-current bus is indirectly counteracted.
In one embodiment, the obtaining a speed loop output of a compressor control system, and forming a torque input signal according to the speed loop output and the phase information of the utility power, that is, step 104 includes: and determining the torque input signal according to a sine proportional function formed by the phase information of the speed loop output and the commercial power.
Specifically, since the bus voltage has a ripple characteristic, input power, dc bus capacitance power, and inverter output power can be derived under the condition that the power factor is assumed to be 1.
Wherein the input power may be expressed as:
Pin＝uin*iin＝Uinsinωint*Iin sinωint＝UinIin sin2ωint
wherein, PinRepresenting input power, uinRepresenting the input voltage, UinRepresenting the magnitude of the input voltage, iinRepresents the input current, IinRepresenting input current amplitude, ωinRepresenting the grid voltage angular frequency.
The dc bus capacitance power can be expressed as:
Pdc＝udc*idc＝Uinsinωint*ωinCdcUincosωint＝0.5ωinCdcUin 2sin2ωint
wherein, PdcRepresenting the DC bus capacitive power, udcRepresenting the DC bus voltage, idcRepresenting the DC bus current, UinRepresenting the input voltage amplitude, ωinRepresenting the angular frequency, C, of the mains voltagedcAnd represents the capacitance value of the bus capacitor.
The inverter output power can be expressed as:
Pinv＝Pin-Pdc＝(UinIin-0.5ωinCdcUin 2)sin2ωint
wherein, PinvRepresenting the inverter output power, PinRepresenting input power, PdcRepresenting the DC bus capacitive power, UinRepresenting the magnitude of the input voltage, IinRepresenting input current amplitude, ωinRepresenting the angular frequency, C, of the mains voltagedcAnd represents the capacitance value of the bus capacitor.
According to the formula, the inverter output power is frequency fluctuation of 2-frequency multiplication power, and in order to reduce an auxiliary circuit, simplify a software flow and facilitate product application and development, the torque can be constructed according to the rule, and specifically can be constructed according to the following formula:
M＝Asin2(ωint+γ)
where M is the torque input signal, A is the speed loop output gain, ωint + gamma is the phase information of the mains supply, omegainThe angular frequency of the voltage of the power grid and gamma is the initial phase.
In one embodiment, the regulating the output of the inverter in combination with the speed loop output based on the torque input signal, i.e. step 106, further comprises: and inputting the torque input signal to a controller, coupling the speed loop output and the torque input signal based on the controller to be used as torque setting of a current loop, and controlling the operation of the compressor after the current loop operation.
Specifically, as shown in fig. 3, which is a schematic structural diagram of a compressor Control system in an embodiment, the compressor Control system further includes a Field-Oriented Control (FOC) controller, also called vector frequency conversion, which can be used to Control a brushless direct current motor (BLDC) and a Permanent Magnet Synchronous Motor (PMSM), and the FOC can precisely Control the magnitude and direction of a magnetic Field, so that the motor has smooth torque, low noise, high efficiency, and high-speed dynamic response. In this embodiment, the torque input signal is input to the non-inductive FOC controller, the speed loop output and the torque input signal are coupled based on the non-inductive FOC controller to be used as the torque setting of the current loop, and the operation of the compressor is controlled after the current loop operation.
Furthermore, the controller comprehensively controls and outputs PWM signals through three-phase current sampling, speed loop, current loop and torque injection, and controls the on-off of the inverter switch tube so as to control the operation of the compressor.
The current loop is a current feedback system, and is a method for connecting the output current to a processing link in a positive feedback or negative feedback mode, and is used for improving the performance of the system by improving the stability of the current. Inverse transformation refers to the process of converting from one transform to another transform specifically associated with it by changing the point to the original point. SVPWM means that ideal flux linkage circles of stators of three-phase symmetrical motors are used as a reference standard when three-phase symmetrical sine-wave voltage is used for supplying power, different switching modes of a three-phase inverter are properly switched, PWM waves are formed, and accurate flux linkage circles are tracked by formed actual flux linkage vectors.
For example, as shown in fig. 4, a torque injection control block diagram in an embodiment is shown, in the embodiment, a dual loop employs a PI controller, a torque injection position is between a speed loop and a current loop, an error between a given speed and a feedback speed passes through the speed loop, an output of the speed loop is coupled with a torque injection signal to serve as a torque given of the current loop, and an output of an inverter is controlled sequentially through the current loop, an inverse transformation, and an SVPWM link.
According to the torque input control method of the compressor, the torque input signal is input into the compressor control system without the electrolytic capacitor, so that the power output has a pulsating effect, the compressor can be in a stable and reliable high-rotating-speed state, the cost of the frequency conversion plate can be greatly saved by adopting a control mode without the electrolytic capacitor, and the application value of the product is improved.
As shown in fig. 5, in one embodiment, a torque input control apparatus of a compressor is provided, which includes a phase obtaining module 510, a torque forming module 520, and an output adjusting module 530.
And a phase obtaining module 510, configured to perform phase locking on the accessed mains supply, and obtain phase information of the mains supply.
And a torque forming module 520, configured to obtain a speed loop output of the compressor control system, and form a torque input signal according to the speed loop output and phase information of the commercial power.
An output adjust module 530 for adjusting the output of the inverter in conjunction with the speed loop output based on the torque input signal to control the operation of the compressor.
The moment input control device of the compressor acquires the phase information of the mains supply by phase locking the accessed mains supply; acquiring the speed loop output of the compressor control system, and forming a torque input signal according to the speed loop output and the phase information of the commercial power; adjusting an output of the inverter in combination with a speed loop output based on the torque input signal to control operation of the compressor. Through the device, a torque input signal is input to the compressor control system without the electrolytic capacitor, so that the power output has a pulsation effect, and the compressor can be in a stable and reliable high-rotating-speed state under the condition that the electrolytic capacitor with a large capacitance value does not exist, thereby ensuring the working stability of the compressor.
For specific limitations of the compressor-based torque input control device, reference may be made to the above limitations of the compressor torque input control method, which are not described herein again. The various modules in the compressor-based torque input control apparatus described above may be implemented in whole or in part by software, hardware, and combinations thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
The implementation of each module in the compressor-based torque input control apparatus provided in the embodiments of the present application may be in the form of a computer program. The computer program may be run on a terminal or a server. The program modules constituted by the computer program may be stored on the memory of the terminal or the server. The computer program, when executed by a processor, implements the steps of the torque input control method of the compressor described in the embodiments of the present application.
The embodiment of the application also provides a computer readable storage medium. One or more non-transitory computer-readable storage media containing computer-executable instructions that, when executed by one or more processors, cause the processors to perform a method of torque input control for a compressor as described in the embodiments above.
The embodiment of the application also provides a computer program product. A computer program product containing instructions which, when run on a computer, cause the computer to perform the torque input control method of a compressor as described in the embodiments above.
The embodiment of the present application further provides a torque input control apparatus for a compressor, which includes a controller, where a computer program is stored in the controller, and when the computer program is executed by the controller, the controller is enabled to execute the torque input control method for the compressor as described in the above embodiments.
The embodiment of the application also provides a refrigerator, which comprises the moment input control device of the compressor, and the refrigerator executes the moment input control method of the compressor in the embodiments when in operation.
In the above embodiments, all or part of the implementation may be realized by software, hardware, firmware, or any combination thereof. When implemented using a software program, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (8)
1. A torque input control method of a compressor is applied to a compressor control system, and the system comprises an inverter and a torque input control device, wherein the inverter is used for outputting electric energy to the compressor; characterized in that the method comprises:
the method comprises the steps of performing phase locking on the accessed commercial power to acquire phase information of the commercial power;
acquiring the speed loop output of the compressor control system, and forming a torque input signal according to the speed loop output and the phase information of the commercial power;
adjusting an output of the inverter in combination with the speed loop output according to the torque input signal to control operation of the compressor;
wherein, the output of combining the phase information of the commercial power to form a moment input signal according to the speed ring comprises:
determining the torque input signal according to a sine proportional function formed by the phase information of the speed loop output and the commercial power;
wherein, the determining the torque input signal according to a sinusoidal proportional function formed by the output of the speed loop and the phase information of the utility power comprises:
according to the formula:
M＝Asin2(ωint+γ)
determining the torque input signal, where M is the torque input signal and A is the speed loop output gain, ωint + gamma is the phase information of the mains supply, omegainThe angular frequency of the voltage of the power grid and gamma is the initial phase.
2. The method of claim 1, wherein the compressor control system further comprises a controller;
the regulating the output of the inverter in combination with the speed loop output in accordance with the torque input signal includes:
the torque input signal is input to the controller, the speed loop output is coupled with the torque input signal based on the controller to be given as the torque of a current loop, and the output of the inverter is controlled through current loop operation, inverse transformation operation and space vector pulse width modulation in sequence to control the operation of the compressor.
3. The method of claim 1, further comprising:
converting the commercial power into direct-current voltage after passing through a rectifying circuit;
and forming a bus voltage by combining the direct-current voltage with a load, wherein the bus voltage is used for providing a chopping voltage for the inverter.
4. A torque input control device of a compressor, comprising:
the phase acquisition module is used for carrying out phase locking on the accessed commercial power and acquiring the phase information of the commercial power;
the moment forming module is used for acquiring the speed loop output of the compressor control system and forming a moment input signal according to the speed loop output and the phase information of the commercial power;
the output adjusting module is used for combining the output of the speed loop output adjusting inverter according to the moment input signal so as to control the operation of the compressor;
the torque forming module is specifically used for determining the torque input signal according to a sine proportional function formed by the phase information of the commercial power and the output of the speed loop;
wherein, the determining the torque input signal according to a sinusoidal proportional function formed by the output of the speed loop and the phase information of the utility power comprises:
according to the formula:
M＝Asin2(ωint+γ)
determining the torque input signal, wherein M is the torque input signal, A is the speed loop output gain,ωint + gamma is the phase information of the mains supply, omegainThe angular frequency of the voltage of the power grid and gamma is the initial phase.
5. The apparatus of claim 4, wherein the output adjustment module is specifically configured to:
the torque input signal is input to the controller, the speed loop output is coupled with the torque input signal based on the controller to be given as the torque of a current loop, and the output of the inverter is controlled through current loop operation, inverse transformation operation and space vector pulse width modulation in sequence to control the operation of the compressor.
6. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 3.
7. A torque input control apparatus of a compressor, comprising a controller having a computer program stored therein, the computer program, when executed by the controller, causing the controller to perform the steps of the method of any one of claims 1 to 3.
8. A refrigerator comprising the torque input control apparatus of the compressor of claim 7.
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| JP3699663B2 (en) * | 2001-05-24 | 2005-09-28 | 勲 高橋 | Inverter control method and apparatus |
| ES2816386T3 (en) * | 2011-01-18 | 2021-04-05 | Daikin Ind Ltd | Energy conversion apparatus |
| JP5212491B2 (en) * | 2011-01-18 | 2013-06-19 | ダイキン工業株式会社 | Power converter |
| KR101995864B1 (en) * | 2012-07-25 | 2019-07-04 | 삼성전자주식회사 | Inverter control apparatus and method thereof |
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| CN105577060B (en) * | 2016-01-08 | 2018-01-23 | 清华大学 | A kind of AC Motor Driver Control System and control method for reducing DC bus capacitor |
| CN106208868B (en) * | 2016-07-13 | 2019-02-01 | 广东美的制冷设备有限公司 | No electrolytic capacitor motor driven systems and its control method, device |
| WO2019039168A1 (en) * | 2017-08-24 | 2019-02-28 | サンデンホールディングス株式会社 | Power conversion device |
| CN109004883B (en) * | 2018-09-04 | 2020-12-18 | 深圳市锐钜科技有限公司 | Bus voltage low-voltage region control method of small-capacitance motor driving system |
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