CN108322099B - Shutdown control method for variable frequency compressor - Google Patents
Shutdown control method for variable frequency compressor Download PDFInfo
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- CN108322099B CN108322099B CN201710040085.XA CN201710040085A CN108322099B CN 108322099 B CN108322099 B CN 108322099B CN 201710040085 A CN201710040085 A CN 201710040085A CN 108322099 B CN108322099 B CN 108322099B
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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
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Air Conditioning Control Device (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Control Of Ac Motors In General (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a control method of a driving system of a variable frequency compressor, which comprises the following steps: the control module receives a shutdown instruction; the control module detects whether the energy storage condition of the inductor meets a shutdown condition in real time and stops the operation of the variable frequency compressor according to a detection result; the invention has the beneficial effects that: (1) when the variable-frequency compressor is stopped, the current on the inductor is detected, the stop operation is executed at the moment when the current is proper, and the capacitor is prevented from being overcharged; (2) and stopping the compressor after gradually reducing the working frequency or the working power of the variable frequency compressor through the corresponding relation between the working frequency or the working power of the variable frequency compressor and the stored energy in the inductor, so as to ensure that the capacitor is not overcharged.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to a shutdown control method for a variable frequency compressor.
Background
In the prior art, as shown in fig. 1, a driving circuit of an air conditioner inverter compressor includes a rectifying module 2, an inductor 3, a capacitor 4, an inverter circuit 5 and a control module 7, the inductor 3, the capacitor 4 are connected in series with the rectifying module 2, the inverter circuit 5 is connected in parallel to the capacitor 4, the control module 7 is connected to the inverter circuit 5 and is configured to control the inverter circuit 5 to output a three-phase alternating current, the inverter circuit 5 is connected to the inverter compressor 6, and the three-phase alternating current output by the inverter circuit 5 is configured to drive the inverter compressor 6 to operate. As shown in fig. 2, when the inverter compressor 6 is suddenly stopped at a moment, since the current in the inductor 3 cannot instantaneously become 0, the current in the inductor 3 still charges the capacitor 4 until the moment charging is stopped, and the voltage on the capacitor 4 continuously rises during the moment, which may cause the voltage on the capacitor 4 to be too high, exceeding a dangerous value, and easily cause a danger that the capacitor 4 is broken down.
Disclosure of Invention
An object of the present invention is to provide a shutdown control method for an inverter compressor, so that when the inverter compressor is shutdown and the current in an inductor is too large, a capacitor is not overcharged, thereby protecting the safety of a driving circuit of the inverter compressor.
Specifically, the invention is realized by the following technical scheme:
a shutdown control method for a variable frequency compressor is used for a variable frequency compressor driving system, the variable frequency compressor driving system comprises a rectifying module, an inductor, a capacitor, an inverter circuit and a control module, the inductor and the capacitor are connected in series with the rectifying module, the inverter circuit is arranged on the capacitor in parallel, the control module is connected with the inverter circuit and used for controlling the inverter circuit to output three-phase alternating current, the inverter circuit is connected with the variable frequency compressor, the three-phase alternating current output by the inverter circuit is used for driving the variable frequency compressor to operate, and the method comprises the following steps:
s101, a control module receives a shutdown instruction;
and S102, detecting whether the energy storage condition of the inductor meets a shutdown condition in real time by a control module, and stopping the operation of the variable frequency compressor according to a detection result.
Preferably, the control module is capable of detecting an ac voltage value of the ac power connected to the rectifier module, and the S102 includes:
s501, detecting the absolute value of the alternating voltage value in real time by a control module;
and S502, judging whether the absolute value of the alternating voltage value is smaller than a preset voltage threshold value or not by the control module, if so, stopping the operation of the variable frequency compressor, and if not, returning to S501.
Preferably, the control module is capable of detecting an ac current value of the ac power connected to the rectifying module, and the S102 includes:
s401, detecting the absolute value of the alternating current value in real time by a control module;
s402, the control module judges whether the absolute value of the alternating current value is smaller than a preset first current threshold value, if so, the operation of the variable frequency compressor is stopped, and if not, the control module returns to S401.
Preferably, the control module is capable of detecting a phase of an alternating current or an alternating voltage of the alternating current connected to the rectifying module, and the S102 includes:
s601, detecting the phase of the alternating current or the alternating voltage in real time by a control module;
and S602, the control module judges whether the phase of the alternating current or the alternating voltage is 0 degree or 180 degrees, if so, the operation of the variable frequency compressor is stopped, and if not, the operation returns to S601.
Preferably, a current detection device is disposed on a loop formed by connecting the inductor, the capacitor and the rectification module in series, the current detection device is connected to the control module, and the control module can obtain an absolute value of a loop current in real time through the current detection device, where the S102 includes:
s701, detecting the absolute value of the loop current in real time by a control module;
and S702, judging whether the absolute value of the loop current is smaller than or equal to a preset second current threshold value or not by the control module, if so, stopping driving the variable frequency compressor to operate, and if not, returning to S701.
Preferably, the preset second current threshold is 0.
Preferably, the control module is capable of detecting a current operating frequency of the inverter compressor (6), and the S102 includes:
s201, a control module detects the current working frequency of the variable frequency compressor;
s202, judging whether the current working frequency of the variable frequency compressor is smaller than a preset frequency threshold value or not by a control module, and if so, stopping the operation of the variable frequency compressor; if not, reducing the working frequency of the inverter compressor below the frequency threshold value, and then stopping the operation of the inverter compressor.
Preferably, the control module is capable of detecting a current power of the inverter compressor, and the S102 includes:
s301, a control module detects the current power of the inverter compressor;
s302, judging whether the current power of the inverter compressor is smaller than a preset power threshold value or not by a control module, and if so, stopping the operation of the inverter compressor; if not, reducing the power of the inverter compressor below the power threshold value, and then stopping the operation of the inverter compressor.
The utility model provides a frequency conversion compressor driving system, frequency conversion compressor driving system includes rectifier module, inductor, condenser, inverter circuit and control module, inductor, condenser with rectifier module establishes ties, inverter circuit connects in parallel and sets up on the condenser, control module with inverter circuit connects for control inverter circuit outputs three-phase alternating current, inverter circuit is connected with frequency conversion compressor, the three-phase alternating current of inverter circuit output is used for the drive frequency conversion compressor operation inductor, condenser with set up current detection device on the return circuit that rectifier module establishes ties, current detection device with control module connects, control module can pass through current detection device acquires the absolute value of return circuit current in real time.
Preferably, the current detection device is a current transformer or a hall sensor.
The invention has the beneficial effects that: (1) when the variable-frequency compressor is stopped, the current on the inductor is detected, the stop operation is executed at the moment when the current is proper, and the capacitor is prevented from being overcharged; (2) and stopping the compressor after gradually reducing the working frequency or the working power of the variable frequency compressor through the corresponding relation between the working frequency or the working power of the variable frequency compressor and the stored energy in the inductor, so as to ensure that the capacitor is not overcharged.
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.
FIG. 1 is a schematic structural diagram of a driving circuit of a conventional inverter compressor of an air conditioner;
FIG. 2 is a schematic diagram illustrating a relationship between a current or voltage value of each circuit branch of the air-conditioning compressor and an operating state of the inverter compressor in the prior art;
FIG. 3 is a schematic diagram illustrating a relationship between a current or voltage value on each circuit branch of the inverter compressor of the air conditioner and an operating state of the inverter compressor according to an embodiment of the present invention;
fig. 4 is a schematic flow chart of a shutdown control method for a compressor of an inverter air conditioner according to an embodiment of the present invention;
fig. 5 is a schematic flow chart of a shutdown control method for a compressor of an inverter air conditioner according to a second embodiment of the present invention;
fig. 6 is a schematic flow chart of a shutdown control method for a compressor of an inverter air conditioner according to a third embodiment of the present invention;
fig. 7 is a schematic flow chart of a shutdown control method for a compressor of an inverter air conditioner according to a fourth embodiment of the present invention;
fig. 8 is a schematic flow chart of a shutdown control method for a compressor of an inverter air conditioner according to a fifth embodiment of the present invention;
fig. 9 is a schematic flow chart of a shutdown control method for a compressor of an inverter air conditioner according to a sixth embodiment of the present invention;
fig. 10 is a schematic structural diagram of a driving circuit of an inverter compressor of an air conditioner according to a seventh embodiment of the present invention;
fig. 11 is a schematic flow chart of a method for controlling shutdown of an inverter air conditioner compressor according to a seventh embodiment of the present invention.
Description of the reference numerals
To further clarify the structure and connection between the various components of the present invention, the following reference numerals are given and described.
1. An alternating current power supply; 2. a rectification module; 3. an inductor; 4. a capacitor; 5. an inverter circuit; 6. a variable frequency compressor; 7. a control module; 8. and a current detection device.
The technical scheme of the invention can be more clearly understood and explained by combining the embodiment of the invention through the reference sign description.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
The present invention will be described in detail below by way of examples.
As shown in fig. 1, the inverter compressor driving system includes a rectifying module 2, an inductor 3, a capacitor 4, an inverter circuit 5 and a control module 7, wherein the inductor 3, the capacitor 4 are connected in series with the rectifying module 2, the inverter circuit 5 is connected in parallel to the capacitor 4, the control module 7 is connected to the inverter circuit 5 and is configured to control the inverter circuit 5 to output a three-phase alternating current, the inverter circuit 5 is connected to an inverter compressor 6, and the three-phase alternating current output by the inverter circuit 5 is configured to drive the inverter compressor 6 to operate. Specifically, the control circuit 7 inputs PWM waves with different duty ratios to the inverter circuit 5 according to different control instructions, and then controls the inverter compressor 6 to operate at different operating frequencies. The control circuit inputs PWM waves with different duty ratios to the inverter circuit to control the inverter compressor is the prior art, and the control circuit is not repeated in the invention.
As known in the prior art, the larger the working frequency of the inverter compressor 5 is, the larger the current input into the inverter circuit 5 is, and the current input into the inverter circuit 5 is obtained by performing passive filtering on the current in the inductor 3 through the capacitor 4, so that the working frequency of the inverter compressor 5 is in a positive correlation relationship, and a specific numerical relationship between the working frequency of the inverter compressor 5 can be measured through experiments; since the stored energy W in the inductor 3 is determined by the formula, where L is the inductance value of the inductor 3, it can be seen that the smaller the operating frequency of the inverter compressor 5 is, the less the stored energy in the inductor 3 is, and as shown in fig. 3, when the stored energy in the inductor 3 is smaller than a certain value (the second current threshold value in fig. 3), even if the inverter compressor is suddenly stopped at any time, the inductor 3 continues to charge the capacitor 4, and finally, an excessive voltage exceeding a dangerous value does not occur on the capacitor 4, thereby protecting the capacitor 4 from breakdown.
As shown in fig. 4, a shutdown control method of an inverter compressor, the method comprising the steps of:
s101: the control module receives a shutdown command.
S102: and the control module detects whether the energy storage condition of the inductor meets a shutdown condition in real time and stops the operation of the variable frequency compressor according to a detection result.
Specifically, the stored energy of the inductor can be determined through a pre-stored corresponding relation table of the stored energy of the inductor and the working frequency of the inverter compressor, if the stored energy is lower than a preset energy threshold value, the inverter compressor is stopped to operate, if the stored energy is not lower than the preset energy threshold value, the working frequency of the inverter compressor is continuously reduced, and the inverter compressor is stopped to operate until the working frequency is reduced to be less than or equal to the working frequency which enables the stored energy of the inductor to be less than the preset energy threshold value in the corresponding relation table. The corresponding relation table of the stored energy of the inductor and the working frequency of the variable-frequency compressor can be obtained through experiments and is solidified in a storage chip of the control module when the variable-frequency compressor leaves a factory. Defining a working frequency value in the correspondence table, which enables the inductor stored energy to be smaller than a preset energy threshold value, as a frequency threshold value, as shown in fig. 5, the step S102 may be:
s201: the control module detects the current working frequency of the variable frequency compressor;
s202: the control module judges whether the current working frequency of the variable frequency compressor is smaller than a preset frequency threshold value, and if so, the variable frequency compressor is stopped to operate; if not, reducing the working frequency of the inverter compressor below the frequency threshold value, and then stopping the operation of the inverter compressor.
And because the working power of the inverter compressor is positively correlated with the working frequency, namely the working frequency is larger, the working power is also larger, the working power of the inverter compressor can be measured by measuring the voltage and the current on the inverter compressor, and the corresponding circuit structure is simpler, so that the energy storage of the inductor can be determined by determining a corresponding relation table of the energy storage of the inductor and the working power of the inverter compressor in modes of experiments and the like, if the energy storage is lower than a preset energy threshold value, the inverter compressor is stopped to operate, and if the energy storage is not lower than the preset energy threshold value, the working power of the inverter compressor is continuously reduced until the working power is reduced to be less than or equal to the working power which can enable the energy storage of the inductor to be less than the preset energy threshold value in the corresponding relation table, and the. The corresponding relation table of the stored energy of the inductor and the working power of the variable-frequency compressor can be obtained through experiments and is solidified in a storage chip of the control module when the storage module leaves a factory. If the working power value capable of making the energy stored in the inductor smaller than the preset energy threshold in the correspondence table is defined as a power threshold, as shown in fig. 6, the step S102 may be:
s301: the control module detects the current power of the variable-frequency compressor;
s302: the control module judges whether the current power of the variable frequency compressor is smaller than a preset power threshold value or not, and if so, the variable frequency compressor is stopped to operate; if not, reducing the power of the inverter compressor below the power threshold value, and then stopping the operation of the inverter compressor.
As shown in fig. 2, the waveform of the current in the inductor 3 is formed by inverting the waveform of the negative half cycle of the alternating current output by the alternating current power supply 1 to the waveform of the positive half cycle, and it can be known from the waveform relationship that the current value of the current is consistent with the absolute value of the alternating current, and the smaller the current value in the inductor 3 is, the smaller the stored energy in the inductor 3 is; in another embodiment of the present invention, the control module is capable of detecting an ac current value of the ac power connected to the rectification module, as shown in fig. 7, and the step S102 may include:
s401: the control module detects the absolute value of the alternating current value in real time;
s402: and the control module judges whether the absolute value of the alternating current value is smaller than a preset first current threshold value, if so, the operation of the variable frequency compressor is stopped, and if not, the step returns to S401.
Because the alternating voltage and the alternating current of the alternating current power supply 1 are in phase and have a fixed multiple relation in numerical value, the stored energy in the inductor 3 can be judged according to the value of the alternating voltage; in another embodiment of the present invention, the control module is capable of detecting an ac voltage value of the ac power coupled to the rectifying module, as shown in fig. 8, where the step S102 includes:
s501: the control module detects the absolute value of the alternating voltage value in real time;
s502: and the control module judges whether the absolute value of the alternating voltage value is smaller than a preset voltage threshold value, if so, the operation of the variable frequency compressor is stopped, and if not, the step returns to S501.
As can be seen from the waveform diagram shown in fig. 2, when the phase of the ac current (or ac voltage) is 0 ° or 180 °, the value of the ac current (or ac voltage) is 0, the corresponding current value on the inductor 3 is also 0, and the stored energy in the inductor 3 is 0 at this time, and when the inverter compressor 6 is stopped, no extra current is generated to charge the capacitor 4, in another embodiment of the present invention, the control module can detect the phase of the ac current (or ac voltage) of the ac power connected to the rectification module, and the S102 includes:
s601: the control module detects the phase of the alternating current (or alternating voltage) in real time;
s602: the control module judges whether the phase of the alternating current (or the alternating voltage) is 0 degree or 180 degrees, if so, the operation of the variable frequency compressor is stopped, and if not, the operation returns to S601.
Further, as shown in fig. 10, a current detection device 8 may be directly disposed on a loop formed by the inductor 3, the capacitor 4 and the rectification module 2 in series, the current detection device 8 is connected to the control module 7, and the control module 7 can obtain a current on the inductor 3 in real time through the current detection device 8, that is, an absolute value of a loop current, as shown in fig. 11, where S102 includes:
s701: the control module detects the absolute value of the loop current in real time;
s702: and the control module judges whether the absolute value of the loop current is detected to be smaller than or equal to a preset second current threshold value, if so, the operation of the variable frequency compressor is stopped, and if not, the operation returns to the step S701.
Preferably, when the preset second current threshold is 0, that is, when the absolute value of the loop current is judged to be 0, the inverter compressor is stopped to be driven to operate, the stored energy in the inductor 3 is 0, and when the inverter compressor 6 is stopped, no extra current is generated to charge the capacitor 4.
Preferably, the current detection device 8 is a current transformer or a hall sensor.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. A frequency conversion compressor shutdown control method is used for a frequency conversion compressor driving system, the frequency conversion compressor driving system comprises a rectifying module (2), an inductor (3), a capacitor (4), an inverter circuit (5) and a control module (7), the inductor (3) and the capacitor (4) are connected with the rectifying module (2) in series, the inverter circuit (5) is arranged on the capacitor (4) in parallel, the control module (7) is connected with the inverter circuit (5) and used for controlling the inverter circuit (5) to output three-phase alternating current, the inverter circuit (5) is connected with a frequency conversion compressor (6), the three-phase alternating current output by the inverter circuit (5) is used for driving the frequency conversion compressor (6) to operate, and the frequency conversion compressor shutdown control method is characterized in that a current detection device (8) is arranged on a loop formed by connecting the inductor (3), the capacitor (4) and the rectifying module (2) in series, the current detection device (8) is connected with the control module (7), and the control module (7) can acquire the absolute value of the loop current in real time through the current detection device (8), and the method comprises the following steps:
s101, a control module receives a shutdown instruction;
and S102, the control module detects whether the energy storage condition of the inductor meets a shutdown condition in real time, wherein the control module can detect any one of an alternating voltage value and an alternating current value of alternating current of the rectifying module (2) and alternating current or phase of the alternating voltage of the alternating current, and stops the operation of the variable frequency compressor according to a detection result.
2. Shutdown control method of an inverter compressor according to claim 1, characterized in that the control module (7) is able to detect the value of the alternating voltage of the alternating current incoming to the rectifier module (2), the S102 comprising:
s501, detecting the absolute value of the alternating voltage value in real time by a control module;
and S502, judging whether the absolute value of the alternating voltage value is smaller than a preset voltage threshold value or not by the control module, if so, stopping the operation of the variable frequency compressor, and if not, returning to S501.
3. Shutdown control method for an inverter compressor according to claim 1, characterized in that the control module (7) is capable of detecting the ac current value of the ac power switched in to the rectifier module, the S102 comprising:
s401, detecting the absolute value of the alternating current value in real time by a control module;
s402, the control module judges whether the absolute value of the alternating current value is smaller than a preset first current threshold value, if so, the operation of the variable frequency compressor is stopped, and if not, the control module returns to S401.
4. The inverter compressor shutdown control method according to claim 1, wherein the control module (7) is capable of detecting a phase of an alternating current or an alternating voltage of the alternating current incoming to the rectifier module (2), the S102 includes: s601, detecting the phase of the alternating current or the alternating voltage in real time by a control module;
and S602, the control module judges whether the phase of the alternating current or the alternating voltage is 0 degree or 180 degrees, if so, the operation of the variable frequency compressor is stopped, and if not, the operation returns to S601.
5. -inverter compressor shutdown control method according to claim 1, characterized in that the current detection means (8) are a current transformer or a hall sensor.
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| CN201710040085.XA CN108322099B (en) | 2017-01-18 | 2017-01-18 | Shutdown control method for variable frequency compressor |
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| CN201710040085.XA CN108322099B (en) | 2017-01-18 | 2017-01-18 | Shutdown control method for variable frequency compressor |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109539482A (en) * | 2018-10-29 | 2019-03-29 | 珠海格力电器股份有限公司 | Electric quantity calculation method and device and air conditioning system |
| CN110429898B (en) * | 2019-08-15 | 2021-11-30 | 海信（山东）空调有限公司 | Control method and device of frequency conversion equipment and frequency conversion equipment |
| TWI724571B (en) * | 2019-10-04 | 2021-04-11 | 建準電機工業股份有限公司 | Protection control method for halting of the motor |
| CN113346805B (en) * | 2020-03-02 | 2022-05-20 | 广东威灵电机制造有限公司 | Motor control method, motor control device, motor system, and storage medium |
| CN113346731B (en) * | 2021-05-10 | 2023-01-20 | Tcl空调器(中山)有限公司 | Compressor shutdown circuit and method and air conditioner |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6628099B2 (en) * | 2001-08-09 | 2003-09-30 | Hitachi, Ltd. | Synchronous motor driving system and sensorless control method for a synchronous motor |
| CN1543047A (en) * | 2003-03-25 | 2004-11-03 | ���µ�����ҵ��ʽ���� | Inverter controller for driving motor, and air conditioner |
| CN104270052A (en) * | 2014-10-08 | 2015-01-07 | 北京新能源汽车股份有限公司 | Permanent magnet synchronous motor controller for vehicle |
| CN104601075A (en) * | 2014-12-31 | 2015-05-06 | 广东美的制冷设备有限公司 | Frequency conversion air conditioner controlling method and control system of frequency conversion air conditioner |
| CN105850031A (en) * | 2013-12-27 | 2016-08-10 | 大金工业株式会社 | Motor driving device |
| CN106288237A (en) * | 2016-10-10 | 2017-01-04 | 芜湖美智空调设备有限公司 | The halt control method of a kind of air-conditioner, control device and air-conditioner |
-
2017
- 2017-01-18 CN CN201710040085.XA patent/CN108322099B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6628099B2 (en) * | 2001-08-09 | 2003-09-30 | Hitachi, Ltd. | Synchronous motor driving system and sensorless control method for a synchronous motor |
| CN1543047A (en) * | 2003-03-25 | 2004-11-03 | ���µ�����ҵ��ʽ���� | Inverter controller for driving motor, and air conditioner |
| CN105850031A (en) * | 2013-12-27 | 2016-08-10 | 大金工业株式会社 | Motor driving device |
| CN104270052A (en) * | 2014-10-08 | 2015-01-07 | 北京新能源汽车股份有限公司 | Permanent magnet synchronous motor controller for vehicle |
| CN104601075A (en) * | 2014-12-31 | 2015-05-06 | 广东美的制冷设备有限公司 | Frequency conversion air conditioner controlling method and control system of frequency conversion air conditioner |
| CN106288237A (en) * | 2016-10-10 | 2017-01-04 | 芜湖美智空调设备有限公司 | The halt control method of a kind of air-conditioner, control device and air-conditioner |
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