Motor drive control modules, compressors and air conditioners
A motor drive control and module technology, applied in the field of compressors, can solve the problems of slow response speed and inapplicability of demagnetization protection, and achieve the effects of more timely protection, low cost and simple circuit structure
Active Publication Date: 2022-03-11
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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Problems solved by technology
In addition, IPM (Intelligent Power Module, Intelligent Power Module) also has protection points for over-current, over-temperature, under-voltage and other functions, and the two protection points need to occupy at least two processor interrupt pin resources, and the frequency conversion The air conditioner also has a DC fan, and corresponding protection points also need to be set, so this design is not suitable for applications with limited main control resources
In addition, the software internal processing demagnetization protection response speed is slow
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[0034] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.
[0035] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.
[0036] Refer below Figure 1 to Figure 2 A motor drive control module, a compressor, and an air conditioner according to some embodiments of the present invention are described.
[0037] like figu...
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The invention provides a motor-driven control module, a compressor and an air conditioner. The motor drive control module includes: an intelligent power module and a sampling circuit; a comparison circuit, which is used to generate a corresponding demagnetization protection signal according to the drive current of the motor. The comparison circuit is connected in series between the sampling circuit and the main control chip, and the demagnetization protection signal Input to the main control chip; the AND gate circuit is used to obtain the demagnetization protection signal and the fault detection signal of the intelligent power module, and generate a corresponding interrupt signal; the main control chip is used to determine whether the motor has a fault according to the interrupt signal and the demagnetization protection signal . Through the motor drive control module of the present invention, a rapid interrupt response of two signals can be achieved at the same time using one interrupt port, and the judgment of the fault type can be realized, so that the demagnetization protection signal of the non-interrupt port has the processing speed of interrupt response, so that The protection of the motor is more timely.
Description
technical field [0001] The invention relates to the technical field of air conditioners, in particular to a motor-driven control module, a compressor, and an air conditioner. Background technique [0002] The electric control of the outdoor unit of the inverter air conditioner mainly loads the driving motor of the compressor, which contains a permanent magnet for excitation. Its magnetic flux decreases as the temperature rises. When it reaches the demagnetization point, it will cause irreversible damage to the compressor. Therefore, the electric control is used to drive the compressor. During operation, motor heating and demagnetization current should be considered. [0003] A common practice is to sample the motor current and send it to a comparator, which is used to set the demagnetization current protection point. In addition, IPM (Intelligent Power Module, Intelligent Power Module) also has protection points for over-current, over-temperature, under-voltage and other fu...
Claims
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IPC IPC(8): H02H7/08H02H1/00
CPCH02H7/0822H02H1/0038
Inventor 文先仕
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD