公开(公告)号：US06244061B1

公开(公告)日：2001-06-12

申请号：US09335781

申请日：1999-06-18

申请人： Junichi Takagi ,  Makoto Ishii ,  Noriaki Arakawa ,  Takeshi Wakatabe ,  Hideki Yoshida ,  Hideyuki Nakamura ,  Hideo Kumakura

发明人： Junichi Takagi ,  Makoto Ishii ,  Noriaki Arakawa ,  Takeshi Wakatabe ,  Hideki Yoshida ,  Hideyuki Nakamura ,  Hideo Kumakura

IPC分类号： F25B4900

CPC分类号： F25B49/025 ,  F25B2600/021 ,  F25D2400/30 ,  Y02B30/741

摘要： When inverter control is implemented in a refrigerator or the like, the rotating speed of a compressor motor is often operated at the preset minimum rotating speed. At this time, there has been a problem that when the DC voltage is boosted, the efficiency of the circuit drops due to switching loss in the power element. Still more, when the DC voltage is boosted even at the minimum rotating speed, the lowest voltage of the DC voltage must be controlled at 163 V or more including the fluctuation of the voltage. Therefore, there has been a problem in that the efficiency of the compressor motor also drops. To avoid these problems, when the temperature within a compartment of a refrigerator is cooled and approaches a preset temperature, and when a conduction ratio of the compressor motor falls below a preset value or a command on a rotating speed of the compressor motor becomes a preset rotating speed and the actual rotating speed also becomes the preset rotating speed, the control of the converter control circuit is turned off.

摘要翻译： 当在冰箱等中实现变频器控制时，压缩机电动机的转速通常以预设的最小转速运转。 此时存在直流电压升高的问题，由于功率元件的开关损耗，电路的效率下降。 此外，即使在最小旋转速度下直流电压升压时，直流电压的最低电压必须控制在包括电压波动在内的163V以上。 因此，存在压缩机电动机的效率也下降的问题。 为了避免这些问题，当冰箱的室内的温度被冷却并且接近预设温度时，并且当压缩机电动机的导通比低于预设值或者压缩机电动机的转速的指令变为预设值时 转速和实际转速也成为预设的转速，转换器控制电路的控制被关闭。

公开(公告)号：US06367273B2

公开(公告)日：2002-04-09

申请号：US09833556

申请日：2001-04-13

申请人： Junichi Takagi ,  Makoto Ishii ,  Noriaki Arakawa ,  Takeshi Wakatabe ,  Hideki Yoshida ,  Hideyuki Nakamura ,  Hideo Kumakura

发明人： Junichi Takagi ,  Makoto Ishii ,  Noriaki Arakawa ,  Takeshi Wakatabe ,  Hideki Yoshida ,  Hideyuki Nakamura ,  Hideo Kumakura

IPC分类号： F25B4902

CPC分类号： F25B49/025 ,  F25B2600/021 ,  F25D2400/30 ,  Y02B30/741

摘要： A refrigerator, having a motor for driving a compressor, an inverter for controlling the operation of the motor, a converter responsive to AC to perform a boosting function to supply DC of variable voltage to the inverter, converter control means for controlling the converter so that a plurality of DC voltages are outputted thereby and inverter control means for controlling the inverter in pulse width modulation each of the plurality of voltages. The lowest voltage among the plurality of voltages being a voltage which turns off the boosting function of the converter.

摘要翻译： 一种具有用于驱动压缩机的电动机，用于控制电动机的操作的逆变器的逆变器，响应于AC的转换器，以执行升压功能以向逆变器提供可变电压的DC，转换器控制装置，用于控制转换器，使得 输出多个直流电压，逆变器控制装置用于以多个电压的脉冲宽度调制控制逆变器。 多个电压中的最低电压是切断转换器的升压功能的电压。