Shutdown control method for inverter compressor
A variable frequency compressor and control method technology, applied in the direction of motor generator control, control system, motor/generator/inverter limiter, etc., can solve the problems of capacitor 4 breakdown, voltage rise, capacitor 4 voltage high, etc. , to ensure the effect of not being overcharged
Active Publication Date: 2018-07-24
AUX AIR CONDITIONING LTD BY SHARE LTD
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Problems solved by technology
like figure 2 As shown, when the variable frequency compressor 6 stops suddenly at time, since the current in the inductor 3 cannot instantly become 0, the current in the inductor 3 still charges the capacitor 4 until the charging stops at time, the voltage on the capacitor 4 Continue to rise during the period, which will cause the voltage on the capacitor 4 to be too high, exceeding the dangerous value, and the danger of capacitor 4 being broken down is prone to occur
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[0046] 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, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.
[0047] The terminology used in the present invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used herein and in the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as use...
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The invention discloses a drive system control method for an inverter compressor. The method comprises the steps as follows: a control module receives a shutdown instruction; and the control module detects whether the energy storage condition of an inductor meets shutdown conditions or not in real time and makes the inverter compressor stop running according to the detection result. The control method has the beneficial effects that (1) when the inverter compressor is shut down, the moment with proper current is determined to execute the shutdown operation through detecting the current on theinductor, thereby ensuring that a capacitor is not overcharged; and (2) the working frequency or working power of the inverter compressor is gradually reduced and then the inverter compressor is shutdown through the corresponding relationship between the working frequency or working power of the inverter compressor and energy stored in the inductor, thereby ensuring that the capacitor is not overcharged.
Description
technical field [0001] The invention relates to the field of air conditioners, in particular to a method for controlling the shutdown of an inverter compressor. Background technique [0002] In the existing technology, such as figure 1 As shown, the drive circuit of the air conditioner inverter compressor includes a rectifier 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 in series with the rectifier module 2, and the inverter The circuit 5 is arranged in parallel on the capacitor 4, the control module 7 is connected to the inverter circuit 5, and is used to control the inverter circuit 5 to output three-phase alternating current, and the inverter circuit 5 is connected to the frequency conversion compressor 6, The three-phase alternating current output by the inverter circuit 5 is used to drive the inverter compressor 6 to run. Such as figure 2 As shown, when the variable frequency c...
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Login to View More IPC IPC(8): H02P3/18H02M1/32
CPCH02M1/32H02P3/18
Inventor 卓森庆
Owner AUX AIR CONDITIONING LTD BY SHARE LTD