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    • 2. 发明授权
    • Inverter controlled air conditioner capable of effectively reducing a
rush current at starting
    • 逆变器控制空调可以有效地降低启动电流
    • US5179842A
    • 1993-01-19
    • US889988
    • 1992-05-29
    • Hidetoshi Kanazawa
    • Hidetoshi Kanazawa
    • H02M1/16F25B49/02H02H9/00H02M7/48
    • H02H9/001F25B49/025H02M7/48F25B2600/021Y02B30/741
    • This invention provides an inverter controlled air conditioner capable of employing a rush current preventing relay having a small capacitance, thereby decreasing the cost. An inverter circuit includes a rectifying circuit connected to an AC power supply, a smoothing capacitor connected to the output terminals of the rectifying circuit, and a switching circuit, connected to the two terminals of the capacitor, for outputting a voltage having a predetermined frequency upon performing switching. An auxiliary power supply circuit has a rectifying circuit connected to the AC power supply. A control section drives the switching circuit with an output from the rectifying circuit as the operation voltage. Relay drive circuits for receiving the output from the rectifying circuit as the operation voltage are connected to an electromagnetic contactor and a relay. When the air conditioner is started, the control section energizes the relay for a predetermined period of time t.sub.s through the relay drive circuits and thereafter energizes the electromagnetic contactor. Normally-open contacts of the electromagnetic contactor are connected between the AC power supply and the inverter circuit. The capacitor of the inverter circuit is connected to the output terminals of the rectifying circuit of the auxiliary power supply circuit through a resistor and normally-open contacts of the relay.
    • 本发明提供一种能够采用具有小电容的冲击电流防止继电器的逆变器控制空调,从而降低成本。 逆变器电路包括连接到AC电源的整流电路,连接到整流电路的输出端的平滑电容器和连接到电容器的两个端子的开关电路,用于将具有预定频率的电压输出到 执行切换。 辅助电源电路具有连接到AC电源的整流电路。 控制部用整流电路的输出驱动开关电路作为工作电压。 当操作电压连接到电磁接触器和继电器时,用于接收整流电路的输出的继电器驱动电路。 当空调启动时,控制部通过继电器驱动电路对继电器通电一段时间ts,然后对电磁接触器通电。 电磁接触器的常开触点连接在交流电源和逆变电路之间。 逆变器电路的电容通过电阻和继电器的常开触点连接到辅助电源电路整流电路的输出端。
    • 5. 发明授权
    • Air conditioner
    • 冷气机
    • US4738118A
    • 1988-04-19
    • US15023
    • 1987-02-17
    • Hidetoshi Kanazawa
    • Hidetoshi Kanazawa
    • H02P27/06B60H1/32F24F11/02F25B49/02G05D23/24F25B1/00
    • F25B49/025G05D23/1917G05D23/24F25B2600/021
    • An air conditioner having a heat exchange cycle which includes at least a compressor motor that is driven by an inverting apparatus at a variable speed, an indoor heat exchanger and an outdoor heat exchanger is provided. This air conditioner comprises a memory for storing a plurality of voltage to frequency ratio pattern data that is predetermined in accordance with different load states of the compressor motor for control of the inverting apparatus, a load state detector which is coupled at a predetermined position in the air conditioner and detects a variation in load of the compressor motor with respect to a plurality of predetermined states, a selector which receives the result of detection by the load state detector and supplies a pattern selection signal to selectively read out a voltage to frequency ratio pattern data corresponding to this detection result to the memory, and a controller which receives the voltage to frequency ratio pattern data read out selectively from the memory in response to the pattern selection signal and supplies a predetermined control output corresponding to the load variation to the inverting apparatus.
    • 本发明提供一种具有热交换循环的空调器,其至少包括由可变速度的反转装置驱动的压缩机电动机,室内热交换器和室外热交换器。 该空调机包括:存储器,用于存储根据用于控制反相装置的压缩机电机的不同负载状态预定的多个电压频率比模式数据;负载状态检测器,其耦合在 空气调节器,检测压缩机马达相对于多个预定状态的负载变化;选择器,其接收负载状态检测器的检测结果,并提供模式选择信号以选择性地读出电压/频率比模式 将与该检测结果相对应的数据存储到存储器中,以及控制器,其响应于模式选择信号选择性地从存储器读出的电压 - 频率比模式数据,并将对应于负载变化的预定控制输出提供给反相装置 。
    • 10. 发明授权
    • PWM inverter controller for starting and driving an AC motor
    • 用于启动和驱动交流电机的PWM逆变器控制器
    • US4758938A
    • 1988-07-19
    • US10337
    • 1987-02-03
    • Hidetoshi Kanazawa
    • Hidetoshi Kanazawa
    • H02M7/48H02P27/08H02M1/12
    • H02M7/53873H02P27/08
    • A first memory stores first PWM control signal pattern data being calculated in advance according to the sine-triangle wave comparison modulation system in the frequency region below a predetermined frequency, for each of predetermined frequency intervals. A second memory stores second PWM control signal pattern data being calculated in advance according to the harmonic removal pattern modulation system in the frequency region above the predetermined frequency for each of predetermined frequency intervals. A frequency designating section supplies frequency designating data. A controller reads out, when receiving the frequency designating data, either the first or second PWM control signal pattern data in accordance with the frequency designating data, from the first or second memory. An inverter outputs a predetermined AC power in accordance with the read-out first or second PWM control signal pattern data. An AC motor is variably speed driven in accordance with the frequency designating data, when receiving the predetermined AC power from the inverter.
    • 对于每个预定频率间隔,第一存储器存储根据正弦三角波比较调制系统在预定频率以下的频率区域中预先计算的第一PWM控制信号模式数据。 第二存储器存储根据预定频率间隔中的每一个的预定频率以上的频率区域中的谐波去除模式调制系统预先计算的第二PWM控制信号模式数据。 频率指定部分提供频率指定数据。 当从第一或第二存储器接收到频率指定数据时,控制器读出根据频率指定数据的第一或第二PWM控制信号模式数据。 逆变器根据读出的第一或第二PWM控制信号模式数据输出预定的交流电力。 当从逆变器接收到预定的AC电力时,AC电动机根据频率指定数据可变速度地驱动。