Motor control method, motor control circuit and motor
A motor control and circuit technology, applied in the direction of motor control, control system, electrical components, etc., can solve the problems of motor overheating, shutdown, etc., achieve the effect of overheating protection and improve user experience
Active Publication Date: 2018-09-04
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology
[0005] Embodiments of the present invention provide a motor control method, a motor control circuit, and a motor to solve the problem of the motor overheating and directly shutting down in the existing motor overheating protection scheme
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[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.
[0034] In the following description, use of suffixes such as 'module', 'part' or 'unit' for denoting elements is only for facilitating description of the present invention, and has no specific meaning by itself. Therefore, 'module', 'part' or 'unit' may be used in combination.
[0035] The present invention provides a motor control circuit to realize the overheat protection of the motor, which will be described in detail through specific embodiments below.
[0036] figure 2 is a schematic structural diagram of a motor control circuit according to an embodiment of the present invention, such as figure 2 As shown, the motor control circuit includes: a motor (such as...
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The invention discloses a motor control method, a motor control circuit and a motor. The motor control circuit comprises a motor, a control unit, one or more temperature sensors, and one or more voltage-dividing capacitors. The temperature sensors are arranged outside or inside the motor and are used for monitoring the motor temperature. The voltage-dividing capacitors are connected in series withthe motor by means of short circuit or access. The control unit is used for controlling a fan to carry out gear adjustment when the motor temperature exceeds an action threshold and / or controlling the voltage-dividing capacitors to be connected to the motor control circuit in an access or short-circuit manner. Therefore, because the motor is provided with the temperature sensors, over-heating controlling is realized without a thermal protector; voltage division is carried out by reducing the gear or carrying out capacitor access or short circuit so as to reduce the motor temperature and thusdirect shutdown by the thermal protector is not needed, so that a problem that the motor is stopped due to over heating or other fault shutdown is triggered by the set due to the shutdown of the motoris solved and thus overheat protection of the motor is realized and the user experience is improved.
Description
technical field [0001] The invention relates to the technical field of motors, in particular to a motor control method, a motor control circuit and a motor. Background technique [0002] At present, air conditioners use multi-level AC capacitors to run asynchronous motors. In order to prevent the motor from overheating and burning due to overload, stalling, and environmental changes, air conditioners currently use multi-level AC capacitors to run asynchronous motors. figure 1 It is a schematic diagram of the principle of a 4-speed AC capacitor running asynchronous motor according to the related technology, such as figure 1 As shown, the motor has a thermal protector on the zero line, which can automatically disconnect when the motor is overheated, so that the motor will stop when it is powered off. When the temperature of the thermal protector reaches the protection action value, the thermal protector is disconnected, and the motor is powered off and stops; when the tempera...
Claims
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IPC IPC(8): H02P29/60
CPCH02P29/60
Inventor 李章玉杜进吴超陈生劳家卓
Owner GREE ELECTRIC APPLIANCES INC