WO2016101467A1 - 一种隔离调速接口电路及应用其的电器设备系统 - Google Patents

一种隔离调速接口电路及应用其的电器设备系统 Download PDF

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Publication number
WO2016101467A1
WO2016101467A1 PCT/CN2015/077457 CN2015077457W WO2016101467A1 WO 2016101467 A1 WO2016101467 A1 WO 2016101467A1 CN 2015077457 W CN2015077457 W CN 2015077457W WO 2016101467 A1 WO2016101467 A1 WO 2016101467A1
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Prior art keywords
signal
microprocessor
circuit board
circuit
motor
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PCT/CN2015/077457
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English (en)
French (fr)
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边文清
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中山大洋电机股份有限公司
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Publication of WO2016101467A1 publication Critical patent/WO2016101467A1/zh
Priority to US15/599,444 priority Critical patent/US10135370B2/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/06—Arrangements for speed regulation of a single motor wherein the motor speed is measured and compared with a given physical value so as to adjust the motor speed
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
    • H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/12—Monitoring commutation; Providing indication of commutation failure
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/14—Electronic commutators
    • H02P6/16—Circuit arrangements for detecting position
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/26—Arrangements for controlling single phase motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
    • H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
    • H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
    • H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
    • H02P7/29—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation

Definitions

  • the invention relates to an isolated speed regulating interface circuit and an electrical equipment system using the same.
  • the traditional motor adopts the single-phase AC motor PSC.
  • the single-phase AC motor has low efficiency, relatively high energy consumption, high noise and low controllability.
  • DC brushless motor which has the characteristics of high energy saving, high reliability and controllability, low noise, easy to realize intelligence, etc., can solve the shortage of AC motor. Therefore, DC brushless motor is used in many equipments to reduce Low energy consumption.
  • the 0-10V analog voltage speed regulation method is more common ECM motor speed control mode, but the ECM motor controller and speed controller (The main control circuit board of electrical equipment is generally not common. As shown in Figure 1, the ECM motor cannot directly read the voltage.
  • the common solution is linear optocoupler isolation signal transmission. This scheme is complicated in configuration and linear optocoupler. The cost is very high; in addition, the US patent also has a serial communication method using a special communication protocol for speed regulation, but the mechanism is complicated and the cost is high.
  • An object of the present invention is to provide an isolated speed regulation interface circuit, which has low cost and simple circuit structure, and adopts a low-cost microprocessor MCU and an isolated power supply.
  • the microprocessor MCU reads 0-10V analog voltage signals. Size, then output PWM signal or variable frequency signal through another pin of the microprocessor MCU.
  • the converted signal is transmitted to the ECM motor through a low-cost signal isolation circuit (digital optocoupler), thus reducing the overall Cost, and the signal converted by the microprocessor MCU is higher in accuracy and reliability.
  • Another object of the present invention is to provide an electrical equipment system, which adopts an isolated speed regulating interface circuit to adjust the speed of the ECM motor, and is suitable for the analog voltage speed regulation mode of 0-10V, and has the advantages of simple structure, low cost, high signal conversion precision and reliable operation.
  • An isolated speed regulating interface circuit is characterized in that it comprises a microprocessor integrated on the circuit board, an isolated power supply and a signal isolation circuit, the output end of the isolated power supply supplies power to each part of the circuit, and the input end of the isolated power supply is connected to an external input power supply.
  • the microprocessor's A/D conversion input port is connected to the analog voltage signal VSP, and the microprocessor converts the analog voltage signal VSP into a PWM signal having a certain duty ratio or a variable frequency signal output to the input end of the signal isolation circuit, the signal isolation circuit
  • the output has a PWM signal or a variable frequency signal with a certain duty cycle.
  • the circuit board described above has two signal input ports, namely a COM port and an analog voltage signal input port, and the COM port is a common port, and the analog voltage signal VSP is in the range of 0-10V.
  • the circuit board described above has a PWM signal output port and an isolated power input port.
  • the microprocessor described above stores an analog voltage signal VSP and a PWM signal comparison table with different duty ratios, and the microprocessor determines the corresponding certain amount according to the analog voltage signal VSP of the A/D conversion input port.
  • the PWM signal of the air ratio the microprocessor will determine the corresponding PWM signal of a certain duty ratio to output to the signal isolation circuit.
  • An electrical equipment system comprising at least one ECM motor and an electrical equipment main control circuit board, wherein the ECM motor and the electrical equipment main control circuit board are connected to the AC input power source, and the ECM motor and the electrical equipment main control circuit board are respectively connected independently Different grounding lines, the main control circuit board of the electrical equipment output 0-10V analog voltage signal is used to adjust the speed of the ECM motor, which is characterized in that an isolated speed regulating interface circuit is also connected to the main control circuit board of the ECM motor and electrical equipment.
  • the isolated speed regulating interface circuit comprises a microprocessor integrated on the circuit board, an isolated power supply and a signal isolation circuit, and the output end of the isolated power supply is a part
  • the circuit is powered, the input end of the isolated power supply is connected to the power output end of the ECM motor, the A/D conversion input port of the microprocessor is connected to the analog voltage signal VSP, and the microprocessor converts the analog voltage signal VSP into a PWM signal with a certain duty ratio.
  • the new frequency conversion model is output to the input end of the signal isolation circuit, and the output isolation PWM signal or the frequency conversion signal of the signal isolation circuit is sent to the motor controller of the ECM motor.
  • the ECM motor described above includes a motor controller and a motor body, the motor body includes a stator assembly, a rotor assembly and a casing assembly, the stator assembly and the rotor assembly are mounted inside the casing assembly, and the stator assembly includes a stator core and a coil a coil winding wound around a stator core, the rotor assembly including a rotor core and a permanent magnet nested inside the rotor core, the motor controller including a control circuit board, a motor microprocessor disposed on the control circuit board, and a reverse Variable circuit, motor running parameter detecting unit and power supply circuit, the input end of the power circuit is connected to the AC input power, the output end of the power circuit supplies power to each part of the circuit, and the motor running parameter detecting unit transmits the motor running data to the motor microprocessor, the motor The output end of the microprocessor is connected to the input end of the inverter circuit, and the output end of the inverter circuit is connected to the coil winding wound on the stator core
  • the above-mentioned isolated speed regulating interface circuit has two signal input ports on the circuit board, namely a COM port and an analog voltage signal input port, the COM port is a common port, and the circuit board has one PWM signal output port and one isolated power input. Port, analog voltage signal VSP is in the range of 0-10V.
  • the main control circuit board of the electrical equipment described above may be a main control circuit board of the air conditioner, or a main control circuit board of the stove, or a main control circuit board of the washing machine, or a main control circuit of the HVAC device. board.
  • the signal isolation circuit described above is an optocoupler isolator.
  • the microprocessor on the circuit board of the isolated speed regulation interface circuit described above stores an analog voltage signal VSP and a PWM signal comparison table with different duty ratios, and the microprocessor converts the analog voltage signal VSP according to the A/D conversion input port.
  • the PWM signal corresponding to a certain duty ratio is determined by the lookup table, and the microprocessor determines that the corresponding PWM signal of a certain duty ratio is output to the signal isolation circuit.
  • the isolated power supply described above is co-located with the main control circuit board of the electrical equipment.
  • the present invention uses a low-cost microprocessor MCU and an isolated power supply, and the microprocessor MCU reads the size of the 0-10V analog voltage signal. Then, the PWM signal or the frequency conversion signal is output through another pin of the microprocessor MCU, and the converted signal is transmitted to the ECM motor through a low-cost signal isolation circuit (digital type photocoupler), the cost is low, and the circuit structure is simple, so that The overall cost is reduced, and the signal converted by the microprocessor MCU is higher in accuracy and reliability. 2)
  • the isolation speed control interface circuit has two signal input ports on the circuit board, namely COM port and analog voltage signal input port.
  • the COM port is a common port.
  • the analog voltage signal VSP is in the range of 0-10V, and the circuit board has one way. PWM signal output port and one isolated power input port, the interface structure is simple and convenient to connect; 3)
  • the microprocessor stores the analog voltage signal VSP and the PWM signal comparison table with different duty cycles, and the microprocessor inputs according to the A/D conversion.
  • the analog voltage signal VSP of the port determines the corresponding PWM signal of a certain duty ratio through the lookup comparison table, and the microprocessor determines that the corresponding PWM signal of a certain duty ratio is output to the signal isolation circuit.
  • the ratio of the PWM signal is output to the signal isolation circuit, where K is the proportionality factor. Its algorithm is simple, occupies a small microprocessor MCU resources, so it can use a lower cost microcontroller MCU. 4)
  • the electrical equipment system of the present invention the main control circuit board of the electrical equipment outputs an analog voltage signal of 0-10V for speed regulation of the ECM motor, and an isolation speed regulating interface circuit is also connected to the main control circuit board of the ECM motor and the electrical equipment.
  • the isolated speed regulation interface circuit has low cost, simple circuit structure, high precision of the signal converted by the microprocessor MCU, and good reliability.
  • 1 is a connection diagram of a conventional electrical equipment system and an ECM motor
  • FIG. 2 is a block diagram of the circuit of the present invention.
  • Figure 3 is a view of a specific embodiment of Figure 2;
  • FIG. 4 is a perspective view of the ECM motor of the present invention.
  • Figure 5 is a perspective view of a motor controller of the ECM motor of the present invention.
  • Figure 6 is a cross-sectional view showing the structure of an ECM motor of the present invention.
  • FIG. 7 is a circuit block diagram of an ECM motor of the present invention.
  • an electrical equipment system of the present invention includes at least one ECM motor and an electrical equipment main control circuit board, and the ECM motor and the main control circuit board of the electrical equipment are connected to the AC input power source.
  • the main control circuit board of ECM motor and electrical equipment is independently connected to different grounding wires.
  • the main control circuit board of the electrical equipment outputs 0-10V analog voltage signal for speed regulation of ECM motor.
  • the main control circuit board of ECM motor and electrical equipment Also connected with an isolation speed control interface circuit, the isolation speed control interface circuit comprises a microprocessor integrated on the circuit board, an isolated power supply and a signal isolation circuit, the output end of the isolated power supply supplies power to each part of the circuit, and the input end of the isolated power supply is connected to the ECM motor.
  • the power output terminal, the A/D conversion input port of the microprocessor is connected to the analog voltage signal VSP, and the microprocessor converts the analog voltage signal VSP into a PWM signal with a certain duty ratio or a new type of inverter output to the input of the signal isolation circuit.
  • the signal isolation circuit outputs the PWM signal or the variable frequency signal to the motor controller of the ECM motor.
  • the ECM motor 1 includes a motor controller 12 and a motor body 11, and the motor body 11 includes a stator assembly 112, a rotor assembly 13, and a casing assembly. 111.
  • the stator assembly 112 and the rotor assembly 113 are mounted inside the casing assembly 111.
  • the stator assembly 112 includes a stator core and a coil winding wound on the stator core.
  • the rotor assembly 113 includes a rotor core and is nested in the rotor core.
  • the motor controller 12 includes a control circuit board 121.
  • the control circuit board 121 is provided with a motor microprocessor, an inverter circuit, a motor operating parameter detecting unit and a power supply circuit, and the input end of the power circuit is connected to the AC input. Power supply, the output of the power circuit is the circuit of each part.
  • the power supply, the motor running parameter detecting unit transmits the motor running data to the motor microprocessor, the output end of the motor microprocessor is connected to the input end of the inverter circuit, and the output end of the inverter circuit is connected to the coil winding wound on the stator core
  • the output PWM signal or the variable frequency signal of the signal isolation circuit is directly sent to the input end of the motor microprocessor, and one output end of the power supply circuit is connected to the input end of the isolated power supply.
  • the motor operating parameter detecting unit may include the rotor position measuring circuit of FIG.
  • the supply voltage in the output 3 of the power circuit includes the DC bus voltage V1, the DC voltage V2 used by the inverter circuit, and the DC voltage V3 used by the power supply microprocessor.
  • the DC voltage V3 is output to the input end of the isolated power supply.
  • the circuit structure of the isolated power supply is in both the textbook and the patent literature, and will not be described in detail herein.
  • the circuit board with isolated speed control interface circuit has two signal input ports, namely COM port and analog voltage signal input port. COM port is a common port.
  • the circuit board has one PWM signal output port and one isolated power input port, analog voltage.
  • the signal VSP is in the range of 0-10V.
  • the isolated power supply is shared with the main control circuit board of the electrical equipment through the COM port.
  • the main control circuit board of the electrical equipment may be a main control circuit board of the air conditioner, or a main control circuit board of the stove, or a main control circuit board of the washing machine, or a main control circuit board of the HVAC device.
  • the signal isolation circuit is an optocoupler isolator.
  • the microprocessor on the circuit board of the isolated speed regulating interface circuit stores an analog voltage signal VSP and a PWM signal comparison table with different duty ratios (see Table 1), and the microprocessor simulates the input port according to the A/D conversion.
  • the voltage signal VSP is determined by the lookup comparison table to determine a corresponding PWM signal of a certain duty ratio, and the microprocessor determines that the corresponding PWM signal of a certain duty ratio is output to the signal isolation circuit.

Abstract

一种隔离调速接口电路及应用其的电器设备系统，隔离调速接口电路安装在ECM电机和电器设备主控制线路板，包括集成在线路板上微处理器、隔离电源和信号隔离电路，隔离电源的输出端为各部分电路供电，隔离电源的输入端连接外部输入电源，微处理器的A/D转换输入端口连接模拟电压信号VSP，微处理器将模拟电压信号VSP转换成具有一定占空比的PWM信号或变频信号输出到信号隔离电路的输入端，信号隔离电路的输出具有一定占空比的PWM信号或变频信号值T0时，微处理器选择第二档速度S2并控制电机以第二档速度S2恒速运行。以上电路结构简单，成本低，微处理器MCU转换的信号精度高、可靠性好。

Description

一种隔离调速接口电路及应用其的电器设备系统 技术领域：
本发明涉及一种隔离调速接口电路及应用其的电器设备系统。
背景技术：
近年来，随着电器领域竞争日趋激烈，对产品技术要求不断提高，如要求产品节能环保、可控性智能化程度高、开发周期短、噪音小等。作为核心部件——电机，无疑成为解决上述技术问题的关键部件，传统的电机采用单相交流电机PSC，单相交流电机效率低，比较耗能、噪音也大，可控性智能程度低。
随着电机技术的发展，出现了永磁同步电机，该种电机必须带有电机控制器，利用电机控制器实现电流的电子换向的目的，所以行业里也有人简称ECM电机(electronically commutated motor)或者直流无刷电机，具有节能环保、可靠性和可控性都比较高、噪音小、容易实现智能化等特点，可以解决交流电机的不足，因此，许多设备中开始应用直流无刷电机，以降低能耗。
现在的中央空调系统，通风系统、洗衣机系统等电器设备中存在多台ECM电机，0-10V的模拟电压调速方式较为通用的ECM电机调速方式，但是ECM电机控制器与调速控制器(电器设备主控制线路板)一般不共地，如图1所示，ECM电机不能直接读取电压的大小，常用解决方案：线性光耦隔离信号传输，这种方案配置复杂，而且线性光耦的成本很高；另外美国专利也出现了采用专门通信协议的串行通信的方式进行调速，但该种方式机构复杂，成本较高。
发明内容：
本发明的一个目的是提供一种隔离调速接口电路，成本低，电路结构简单，采用了一个低成本的微处理器MCU和一个隔离电源，微处理器MCU读取0-10V模拟电压信号的大小，然后通过微处理器MCU的另外一个引脚输出PWM信号或变频信号，转换后的信号通过一个低成本的信号隔离电路(数字型光耦)来传输给ECM电机，这样就整体上降低了成本，而且微处理器MCU转换的信号精度较高，可靠性好。
本发明的另一个目的是提供电器设备系统，采用隔离调速接口电路对ECM电机进行调速，适用0-10V的模拟电压调速方式，结构简单，成本低，信号转换精度高，工作可靠。
本发明是通过下述技术方案予以实现的：
一种隔离调速接口电路，其特征在于：它包括集成在线路板上微处理器、隔离电源和信号隔离电路，隔离电源的输出端为各部分电路供电，隔离电源的输入端连接外部输入电源，微处理器的A/D转换输入端口连接模拟电压信号VSP，微处理器将模拟电压信号VSP转换成具有一定占空比的PWM信号或变频信号输出到信号隔离电路的输入端，信号隔离电路的输出具有一定占空比的PWM信号或变频信号。
上述所述的线路板上具有两个信号输入端口，即COM端口和模拟电压信号输入端口，COM端口是公共端口，模拟电压信号VSP在0-10V的范围，。
上述所述的线路板上具一路PWM信号输出端口和一路隔离电源输入端口。
上述所述的微处理器里面存储有模拟电压信号VSP与不同占空比的PWM信号对照表，微处理器根据A/D转换输入端口的模拟电压信号VSP的通过查找对照表确定对应的一定占空比的PWM信号，微处理器将确定对应的一定占空比的PWM信号输出到信号隔离电路。
上述所述的微处理器输入模拟电压信号VSP，微处理器根据一定的函数关系F＝V/K*100％计算出对应的一定占空比的PWM信号，微处理器将计算出的对应的一定占空比的PWM信号输出到信号隔离电路,其中K是比例系数。
一种电器设备系统，包括至少一台ECM电机和电器设备主控制线路板，所述的ECM电机和电器设备主控制线路板共同连接AC输入电源，ECM电机和电器设备主控制线路板分别独立连接不同的接地线，电器设备主控制线路板输出0-10V的模拟电压信号用于对ECM电机进行调速，其特征在于：在ECM电机和电器设备主控制线路板还连接有隔离调速接口电路，隔离调速接口电路包括集成在线路板上微处理器、隔离电源和信号隔离电路，隔离电源的输出端为各部分 电路供电，隔离电源的输入端连接ECM电机的电源输出端，微处理器的A/D转换输入端口连接模拟电压信号VSP，微处理器将模拟电压信号VSP转换成具有一定占空比的PWM信号或者变频新型号输出到信号隔离电路的输入端，信号隔离电路的输出PWM信号或变频信号到ECM电机的电机控制器。
上述所述的ECM电机包括电机控制器及电机实体，所述的电机实体包括定子组件、转子组件和机壳组件，定子组件、转子组件安装在机壳组件里面，定子组件包括定子铁芯和卷绕在定子铁芯上的线圈绕组，转子组件包括转子铁芯和嵌套在转子铁芯里面的永磁体，所述的电机控制器包括控制线路板，控制线路板上设置电机微处理器、逆变电路、电机运行参数检测单元和电源电路，电源电路的输入端连接AC输入电源，电源电路的输出端为各部分电路供电，电机运行参数检测单元将电机运行数据传输到电机微处理器，电机微处理器的输出端连接逆变电路的输入端，逆变电路的输出端连接卷绕在定子铁芯上的线圈绕组，信号隔离电路的输出PWM信号或者变频信号直接送到电机微处理器的输入端，电源电路的其中一个输出端连接隔离电源的输入端。
上述所述的隔离调速接口电路的线路板上具有两个信号输入端口，即COM端口和模拟电压信号输入端口，COM端口是公共端口，线路板上具一路PWM信号输出端口和一路隔离电源输入端口，模拟电压信号VSP在0-10V的范围。
上述所述的所述的电器设备主控制线路板可以是空调设备的主控制线路板，或者是炉具主控制线路板，或者是洗衣机的主控制线路板，或者是暖通设备的主控制线路板。
上述所述的所述的信号隔离电路是光耦隔离器。
上述所述的隔离调速接口电路的线路板上的微处理器里面存储有模拟电压信号VSP与不同占空比的PWM信号对照表，微处理器根据A/D转换输入端口的模拟电压信号VSP的通过查找对照表确定对应的一定占空比的PWM信号，微处理器将确定对应的一定占空比的PWM信号输出到信号隔离电路。
上述所述的隔离调速接口电路的线路板上的微处理器输入模拟电压信号V SP，微处理器根据一定的函数关系F＝V/K*100％计算出对应的一定占空比的PWM信号，微处理器将计算出的对应的一定占空比的PWM信号输出到信号隔离电路,其中K是比例系数。
上述所述的隔离电源与电器设备主控制线路板共地。
本发明与现有技术相比，1)本发明的隔离调速接口电路，采用了一个低成本的微处理器MCU和一个隔离电源，微处理器MCU读取0-10V模拟电压信号的大小，然后通过微处理器MCU的另外一个引脚输出PWM信号或变频信号，转换后的信号通过一个低成本的信号隔离电路(数字型光耦)来传输给ECM电机，成本低，电路结构简单，这样就整体上降低了成本，而且微处理器MCU转换的信号精度较高，可靠性好。2)隔离调速接口电路的线路板上具有两个信号输入端口，即COM端口和模拟电压信号输入端口，COM端口是公共端口，模拟电压信号VSP在0-10V的范围，线路板上具一路PWM信号输出端口和一路隔离电源输入端口，接口结构简单，连接方便；3)微处理器里面存储有模拟电压信号VSP与不同占空比的PWM信号对照表，微处理器根据A/D转换输入端口的模拟电压信号VSP的通过查找对照表确定对应的一定占空比的PWM信号，微处理器将确定对应的一定占空比的PWM信号输出到信号隔离电路。或者微处理器输入模拟电压信号VSP，微处理器根据一定的函数关系F＝V/K*100％计算出对应的一定占空比的PWM信号，微处理器将计算出的对应的一定占空比的PWM信号输出到信号隔离电路,其中K是比例系数。它的算法简单，占用较小的微处理器MCU资源，因此能采用成本较低的单片机MCU。4)本发明的电器设备系统，电器设备主控制线路板输出0-10V的模拟电压信号用于对ECM电机进行调速，在ECM电机和电器设备主控制线路板还连接有隔离调速接口电路，该隔离调速接口电路成本低，电路结构简单，微处理器MCU转换的信号精度较高，可靠性好。
附图说明：
图1是现有的电器设备系统与ECM电机的连接图；
图2本发明的电路方框图；
图3是图2的具体的实施方案图；
图4本发明的ECM电机的立体图；
图5是本发明的ECM电机的电机控制器的立体图；
图6是本发明的ECM电机的结构剖视图；
图7是本发明的ECM电机的电路方框图。
具体实施方式：
下面通过具体实施例并结合附图对本发明作进一步详细的描述。
如图2至图3所示，本发明的一种电器设备系统，包括至少一台ECM电机和电器设备主控制线路板，所述的ECM电机和电器设备主控制线路板共同连接AC输入电源，ECM电机和电器设备主控制线路板分别独立连接不同的接地线，电器设备主控制线路板输出0-10V的模拟电压信号用于对ECM电机进行调速，在ECM电机和电器设备主控制线路板还连接有隔离调速接口电路，隔离调速接口电路包括集成在线路板上微处理器、隔离电源和信号隔离电路，隔离电源的输出端为各部分电路供电，隔离电源的输入端连接ECM电机的电源输出端，微处理器的A/D转换输入端口连接模拟电压信号VSP，微处理器将模拟电压信号VSP转换成具有一定占空比的PWM信号或者变频新型号输出到信号隔离电路的输入端，信号隔离电路的输出PWM信号或变频信号到ECM电机的电机控制器。
如图3、图4、图5、图6和图7，所述的ECM电机1包括电机控制器12及电机实体11，所述的电机实体11包括定子组件112、转子组件13和机壳组件111，定子组件112、转子组件113安装在机壳组件111里面，定子组件112包括定子铁芯和卷绕在定子铁芯上的线圈绕组，转子组件113包括转子铁芯和嵌套在转子铁芯里面的永磁体，所述的电机控制器12包括控制线路板121，控制线路板121上设置电机微处理器、逆变电路、电机运行参数检测单元和电源电路，电源电路的输入端连接AC输入电源，电源电路的输出端为各部分电路 供电，电机运行参数检测单元将电机运行数据传输到电机微处理器，电机微处理器的输出端连接逆变电路的输入端，逆变电路的输出端连接卷绕在定子铁芯上的线圈绕组，信号隔离电路的输出PWM信号或者变频信号直接送到电机微处理器的输入端，电源电路的其中一个输出端连接隔离电源的输入端。电机运行参数检测单元可以包括图7的转子位置测量电路。电源电路的输出3中供电电压，包括直流母线电压V1，供逆变电路使用的直流电压V2，供电机微处理器使用的直流电压V3。直流电压V3输出到隔离电源的输入端，隔离电源的电路结构在教课书和专利文献均有，在这里不再详述。隔离调速接口电路的线路板上具有两个信号输入端口，即COM端口和模拟电压信号输入端口，COM端口是公共端口，线路板上具一路PWM信号输出端口和一路隔离电源输入端口，模拟电压信号VSP在0-10V的范围。隔离电源通过COM端口与与电器设备主控制线路板共地。
所述的电器设备主控制线路板可以是空调设备的主控制线路板，或者是炉具主控制线路板，或者是洗衣机的主控制线路板，或者是暖通设备的主控制线路板。所述的信号隔离电路是光耦隔离器。
隔离调速接口电路的线路板上的微处理器里面存储有模拟电压信号VSP与不同占空比的PWM信号对照表(见表1所示)，微处理器根据A/D转换输入端口的模拟电压信号VSP的通过查找对照表确定对应的一定占空比的PWM信号，微处理器将确定对应的一定占空比的PWM信号输出到信号隔离电路。
模拟电压信号VSP PWM信号的占空比
0.1V 1％
0.2 2％
... ...
1.1V 11％
1.5V 15％
... ...
... ...
4.5V 45％
4.6V 46％
... ...
9.9V 99％
10V 100％
表1
隔离调速接口电路的线路板上的微处理器输入模拟电压信号VSP，微处理器根据一定的函数关系F＝V/K*100％计算出对应的一定占空比的PWM信号，微处理器将计算出的对应的一定占空比的PWM信号输出到信号隔离电路,其中K是比例系数，这里K＝10。

Claims (13)

  1. 一种隔离调速接口电路，其特征在于：它包括集成在线路板上微处理器、隔离电源和信号隔离电路，隔离电源的输出端为各部分电路供电，隔离电源的输入端连接外部输入电源，微处理器的A/D转换输入端口连接模拟电压信号VSP，微处理器将模拟电压信号VSP转换成具有一定占空比的PWM信号或变频信号输出到信号隔离电路的输入端，信号隔离电路的输出具有一定占空比的PWM信号或变频信号。
  2. 根据权利要求1所述的一种隔离调速接口电路，其特征在于：线路板上具有两个信号输入端口，即COM端口和模拟电压信号输入端口，COM端口是公共端口，模拟电压信号VSP在0-10V的范围。
  3. 根据权利要求1或2所述的一种隔离调速接口电路，其特征在于：线路板上具一路PWM信号输出端口和一路隔离电源输入端口。
  4. 根据权利要求1或2所述的一种隔离调速接口电路，其特征在于：微处理器里面存储有模拟电压信号VSP与不同占空比的PWM信号对照表，微处理器根据A/D转换输入端口的模拟电压信号VSP的通过查找对照表确定对应的一定占空比的PWM信号，微处理器将确定对应的一定占空比的PWM信号输出到信号隔离电路。
  5. 根据权利要求1或2所述的一种隔离调速接口电路，其特征在于：微处理器输入模拟电压信号VSP，微处理器根据一定的函数关系F＝V/K*100％计算出对应的一定占空比的PWM信号，微处理器将计算出的对应的一定占空比的PWM信号输出到信号隔离电路,其中K是比例系数。
  6. 一种电器设备系统，包括至少一台ECM电机和电器设备主控制线路板，所述的ECM电机和电器设备主控制线路板共同连接AC输入电源，ECM电机和电器设备主控制线路板分别独立连接不同的接地线，电器设备主控制线路板输出0-10V的模拟电压信号用于对ECM电机进行调速，其特征在于：在ECM电机和电器设备主控制线路板还连接有隔离调速接口电路，隔离调速接口电路包括集成 在线路板上微处理器、隔离电源和信号隔离电路，隔离电源的输出端为各部分电路供电，隔离电源的输入端连接ECM电机的电源输出端，微处理器的A/D转换输入端口连接模拟电压信号VSP，微处理器将模拟电压信号VSP转换成具有一定占空比的PWM信号或者变频新型号输出到信号隔离电路的输入端，信号隔离电路的输出PWM信号或变频信号到ECM电机的电机控制器。
  7. 根据权利要求6所述的一种电器设备系统，其特征在于：所述的ECM电机包括电机控制器及电机实体，所述的电机实体包括定子组件、转子组件和机壳组件，定子组件、转子组件安装在机壳组件里面，定子组件包括定子铁芯和卷绕在定子铁芯上的线圈绕组，转子组件包括转子铁芯和嵌套在转子铁芯里面的永磁体，所述的电机控制器包括控制线路板，控制线路板上设置电机微处理器、逆变电路、电机运行参数检测单元和电源电路，电源电路的输入端连接AC输入电源，电源电路的输出端为各部分电路供电，电机运行参数检测单元将电机运行数据传输到电机微处理器，电机微处理器的输出端连接逆变电路的输入端，逆变电路的输出端连接卷绕在定子铁芯上的线圈绕组，信号隔离电路的输出PWM信号或者变频信号直接送到电机微处理器的输入端，电源电路的其中一个输出端连接隔离电源的输入端。
  8. 根据权利要求6或7所述的一种电器设备系统，其特征在于：隔离调速接口电路的线路板上具有两个信号输入端口，即COM端口和模拟电压信号输入端口，COM端口是公共端口，线路板上具一路PWM信号输出端口和一路隔离电源输入端口，模拟电压信号VSP在0-10V的范围。
  9. 根据权利要求6或7所述的一种电器设备系统，其特征在于：所述的电器设备主控制线路板可以是空调设备的主控制线路板，或者是炉具主控制线路板，或者是洗衣机的主控制线路板，或者是暖通设备的主控制线路板。
  10. 根据权利要求8所述的一种电器设备系统，其特征在于：所述的信号隔离电路是光耦隔离器。
  11. 根据权利要求6或7所述的一种电器设备系统，其特征在于：隔离调 速接口电路的线路板上的微处理器里面存储有模拟电压信号VSP与不同占空比的PWM信号对照表，微处理器根据A/D转换输入端口的模拟电压信号VSP的通过查找对照表确定对应的一定占空比的PWM信号，微处理器将确定对应的一定占空比的PWM信号输出到信号隔离电路。
  12. 根据权利要求6或7所述的一种电器设备系统，其特征在于：隔离调速接口电路的线路板上的微处理器输入模拟电压信号VSP，微处理器根据一定的函数关系F＝V/K*100％计算出对应的一定占空比的PWM信号，微处理器将计算出的对应的一定占空比的PWM信号输出到信号隔离电路,其中K是比例系数。
  13. 根据权利要求6或7所述的一种电器设备系统，其特征在于：隔离电源与电器设备主控制线路板共地。
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