Do you know of air-conditioner in the power supply equipment

in the commercial freezer to provide power supply device is called motor, its main function is to provide energy and motivation. Must have a lot of customers buy freezers for it are very strange, let the cooler price to give you say its features and functions. In the commercial freezer compressor motor must have a high temperature resistant, has large starting torque, can adapt to the fluctuation of the power supply voltage, resistance to impact and vibration, refrigerant and oil properties, such as erosion. Commonly used compressor motor is single-phase asynchronous motor and asynchronous frequency conversion motor, etc. ( 1) Single-phase induction motor. Air-conditioner compressor with single-phase asynchronous motor structure and refrigerator compressor with basically the same. Household commercial freezer compressor motor USES capacitance running type ( PSC) 。 The motor during the whole process from the start to the normal operation, vice winding always connect a capacitor in the circuit. This motor operation performance is good, efficiency and power factor is higher, reliable work, but the starting torque is small, no-load current. If the instantaneous power restart, the interval time is too short, may be overloaded, and therefore must have over-current protection device. ( 2) Asynchronous motor frequency control of motor speed. If you can according to the size of the room air-conditioner load smoothly adjust the speed of compressor motor, which regulates the refrigeration ( Or heating) The amount of size, can reduce energy consumption, improve efficiency, make the power supply voltage stability, reduce indoor temperature fluctuations. Frequency control of motor speed to achieve smooth speed regulation, and wide speed range, high efficiency, fast response, small startup current, small impact on the grid, comfort performance is good, the ideal is a kind of energy-saving control method. Especially heat pump air-conditioner, frequency modulation speed control to control the size of the heat pump system of the heat, don't have to be limited to outdoor temperature, thus greatly improve the heating capacity. The basic structure of the frequency converter are divided into direct ( Hand in a hand in) Frequency conversion and indirect ( Has a hand in) Frequency conversion two kinds big. Pay a alternating frequency converter to constant voltage constant frequency alternating current (ac) directly into ac voltage and frequency can be controlled. Pay to have a hand in the inverter inverter is used first power frequency alternating current into direct current (dc), and then through the inverter the dc into ac frequency and voltage can be controlled. Compressor motor frequency control of motor speed usually use has a hand in the inverter. This is the motor characteristics and role of the air-conditioner, thus, it is one of important components for air-conditioner.
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