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    Refrigerator compressor

    The compressor is the heart of the refrigeration system. It inhales the low-temperature and low-pressure refrigerant gas from the inspirition tube, drives the piston through motor to compress such gas and discharges the high-temperature and high-pressure refrigerant gas to the exhaust pipe to provide power for the refrigeration cycle, thus realizing the refrigeration cycle of compression→ condensation → expansion → evaporation (heat absorption). The compressor consists of shell, motor, cylinder, piston, control equipment (starter and thermal protector) and cooling system.

    Based on MindMotion’s MM32SPIN05TUOP / MM32SPIN0230 microcontroller, the refrigerator compressor takes MM32SPIN05TUOP / MM32SPIN0230 as its main control.





    MM32 MCU Model：

    MM32SPIN05TUOP

    MCU Specifications：

    - Arm® Cortex-M0 core, operating at a frequency of up to 72MHz
    - 32KB Flash, 4KB SRAM
    - Include 12-bit ADCs, with the sampling speed up to 1Msps
    - Five general-purpose timers and one PWM advanced timers for motor control
    - One I2C interface, two SPI interfaces, two UART interfaces
    - Embed one operation amplifiers and five comparators for motor applications
    - Working voltage: 2.0V~5.5V
    - Working temperature range: -40℃ to +85℃

    MM32 MCU Model:

    MM32SPIN0230 Series

    MCU Specifications:

    - Arm® Cortex-M0 core, operating at a frequency of up to 96MHz
    - 32KB Flash, 4KB SRAM
    - One 12-bit analog-to-digital converter ADC, 11 channels supported and sampling rate 1Msps
    - Four general-purpose timers and one PWM advanced timers for motor control
    - Supports UART/SPI communication
    - Embed two operation amplifiers and two comparators for motor applications

    Features:

    - Single resistor sensorless FOC control to save cost and board space
    - Back pressure (0.7Mpa) and equilibrium pressure (0.4Mpa) startup
    - Rotational speed closed-loop control to maintain high accuracy within the full rotational speed range
    - Limited power control
    - Weak magnetic acceleration and MTPA, low speed with high efficiency
    - Vibration suppression algorithm and ultra-quiet working mode
    - Sliding mode control and primary energy efficiency
    - Overcurrent, over-and under voltage, block running and startup protection

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