WO2014019371A1

WO2014019371A1 - Centralized motor controller convenient in configuring motors

Info

Publication number: WO2014019371A1
Application number: PCT/CN2013/073219
Authority: WO
Inventors: 赵勇; 胡戈; 周一桥; 鲁楚平
Original assignee: 中山大洋电机股份有限公司
Priority date: 2012-07-28
Filing date: 2013-03-26
Publication date: 2014-02-06
Also published as: CN102769419B; CN102769419A

Abstract

A centralized motor controller convenient in configuring motors is connected to an application system controller and used for receiving an instruction of the application system controller to control multiple independent motors. The centralized motor controller comprises a mother circuit board, at least two sub-circuit boards and multiple motors. A power supply portion and a mother board microprocessor are arranged on the mother circuit board, the power supply portion is used for supplying power for each circuit and each sub-circuit board, and the mother board microprocessor receives the instruction of the application system controller. The multiple motors comprise three motors or more, among which at least two motors adopt a permanent magnet synchronous motor without a motor controller. The multiple sub-circuit board at least comprise two sub-circuit boards, each sub-circuit board comprises a sub-board microprocessor, an inverter unit, and a rotor position detection unit, each sub-circuit board is connected to one permanent magnet synchronous motor without the motor controller, the sub-board microprocessor drives the permanent magnet synchronous motor without the motor controller through the inverter unit, and the rotator position detection unit sends rotor position data of the permanent magnet synchronous motor without the motor controller to the sub-board microprocessor. The mother circuit board is electrically connected to the multiple sub-circuit boards through connectors, and the mother board microprocessor establishes connection communication with the sub-board microprocessor. The centralized motor controller is convenient in configuring and assembling motors of different types, and can eliminate overlapping circuit configuration, thereby simplifying the circuit structure and lowering the product cost.

Description

Centralized motor controller for easy configuration of motor

Technical field:

The invention relates to a centralized motor controller for conveniently configuring a motor.

Background technique :

In recent years, with the increasingly fierce competition in the electrical field, the technical requirements for products have been continuously improved, such as requiring energy conservation and environmental protection, high degree of controllability, short development cycle, and low noise. As a core component, the motor is undoubtedly the key component to solve the above technical problems. The traditional motor uses a single-phase AC motor PSC. The single-phase AC motor has low efficiency, relatively high energy consumption, high noise, and low controllability.

With the development of motor technology, a permanent magnet synchronous motor has emerged. This kind of motor must be equipped with a motor controller. The motor controller is used to achieve the purpose of electronic commutation of current, so there are also people in the industry.

ECM motor (e lectronica l ly commutated motor), permanent magnet synchronous motor has the characteristics of high energy saving, high reliability and controllability, low noise, easy to realize intelligence, etc. It can solve the shortage of AC motor, therefore, many equipment The application of permanent magnet synchronous motors began to reduce energy consumption.

There are many motors in the central air conditioning system, ventilation system, washing machine system, etc. There may be two or more motors using permanent magnet synchronous motors. Each permanent magnet synchronous motor has an independent motor controller. 1 is a structural block diagram of an existing central air conditioning system HVAC, each motor controller includes a separate power supply part, a microprocessor, an inverter unit, and a rotor position detecting unit. In the prior art solution, each motor controller The power supply part, the microprocessor, the inverter circuit and the motor operation parameter detecting unit are all set up, so that the entire control part circuit is overlapped and configured, the structure is complicated, and the hardware and software resources cannot be fully utilized, which is bound to cause a great increase in product cost and resources. waste. In addition, due to the limited layout space of the motor controller, heat dissipation becomes a more difficult problem.

In addition, in the research and development, the number of motors that need to be controlled by different application system controllers is different. As such, the configuration of the permanent magnet synchronous motor and the AC motor without the motor controller is different. It is urgently required that the centralized motor controller can flexibly configure and combine different types of motors.

Summary of the invention:

An object of the present invention is to provide a centralized motor controller that is convenient for arranging a motor, which is flexible and convenient to configure and combine different types of motors, and uses at least two permanent magnet synchronous motors without motor controllers, and uses a mother circuit board. Plug-in connection with several sub-circuit boards, the power supply part of the mother circuit board supplies power to each sub-circuit board, simplifies the circuit structure, removes overlapping circuit configurations, greatly reduces product cost, and reduces resource waste.

The object of the present invention is achieved by the following technical solutions:

A centralized motor controller for conveniently configuring a motor, which is connected to an application system controller for receiving an instruction of an application system controller to control operation of a plurality of independent motors, including a mother circuit board, a plurality of sub-circuit boards, and a plurality of a motor, a power supply part and a motherboard microprocessor are arranged on the mother circuit board, the power part supplies power to each part of the circuit and each sub-board, and the motherboard microprocessor receives an instruction of the application system controller, and the plurality of motors are 3 or more, at least 2 motors use a 7-wire synchronous motor without a motor controller, and at least 2 sub-circuit boards, each sub-board contains a sub-board microprocessor, inverter unit and rotor position The detecting unit, each sub-board is connected with a permanent magnet synchronous motor without a motor controller, the sub-board microprocessor drives the permanent magnet synchronous motor without the motor controller through the inverter unit, and the rotor position detecting unit will have no motor controller The rotor position data of the permanent magnet synchronous motor is sent to the sub-board microprocessor, and the mother circuit board and the plurality of sub-circuit boards are electrically connected through the connector, the mother board The microprocessor establishes connection communication with the daughter board microprocessor.

The plurality of motors described above include an AC motor, and an AC motor drive interface is disposed on the motherboard, and the motherboard microprocessor drives the interface AC motor through the AC motor.

The AC motor drive interface described above includes at least one relay and its drive circuit, and the motherboard micro The processor controls an AC motor through a relay and its drive circuit.

The rotor position detecting unit described above is a phase current detecting unit, and the rotor position data is calculated by real-time phase current.

The motherboard microprocessor has built-in or external memory, and the memory stores motor operating parameters and operating modes.

The motherboard microprocessor described above communicates with each sub-board microprocessor via a bus, and the bus is distributed on the mother board.

The application system controller described above is an air conditioning system controller or a HVAC system controller or a pump system controller or a washing machine controller or a car controller.

The power supply section described above includes a rectified current, DC/DC buck circuit.

Compared with the prior art, the present invention has the following advantages: 1) The centralized motor controller of the present invention is connected to the application system controller, including a mother circuit board, a plurality of sub-circuit boards and a plurality of motors, and a mother circuit board. The power supply part and the motherboard microprocessor are set, and the power supply part supplies power to each part of the circuit and each sub-circuit board. The plurality of motors are three or more, and at least two motors are used without a motor controller. Synchronous motor, there are at least two sub-circuit boards, each sub-board contains a sub-board microprocessor, an inverter unit and a rotor position detecting unit, and each sub-board is connected to a permanent magnet synchronous motor without a motor controller. The mother circuit board and the plurality of sub circuit boards are electrically connected through the connector, and the motherboard microprocessor establishes connection communication with the daughter board microprocessor, simplifies the circuit structure, removes overlapping circuit configurations, greatly reduces product cost, and reduces resource waste. It is flexible and convenient to configure and combine different types of motors. It is very convenient to use. The centralized motor controller has better heat dissipation conditions and solves the original single motor controller. The thermal difference causes the control instability problem; 2) The plurality of motors include an AC motor, the AC circuit drive interface is provided on the mother circuit board, and the motherboard microprocessor drives the interface AC motor through the AC motor, which is more adaptable; The motherboard microprocessor and each sub-board microprocessor communicate by bus, and the bus is distributed on the bus Board, easy to manufacture. 4) The rotor position detecting unit is a phase current detecting circuit, which can simplify the connection and eliminate the use of Hall elements to reduce the cost. 5) The motherboard microprocessor is also connected with a memory for storing motor operating parameters and operating modes, which is flexible and convenient to use.

BRIEF DESCRIPTION OF THE DRAWINGS:

Figure 1 is a block diagram showing the structure of a conventional air conditioning system HVAC;

Figure 2 is a block diagram of Embodiment 1 of the present invention;

Figure 3 is a detailed block diagram of Figure 2;

4 is a circuit diagram of an inverter unit and a rotor position detecting unit of the present invention.

Figure 5 is a block diagram of a second embodiment of the present invention.

Figure 6 is a block diagram of Embodiment 3 of the present invention;

Figure 7 is a detailed structural diagram of Figure 5:

Figure 4 is a block diagram of Embodiment 4 of the present invention;

Figure 9 is a block diagram of Embodiment 5 of the present invention;

Figure 10 is a schematic view showing the connection of the mother circuit board and the sub-circuit board of Figure 9;

Figure 11 is a block diagram of Embodiment 6 of the present invention;

detailed description:

The present invention will now be described in further detail by way of specific embodiments and the accompanying drawings.

Embodiment 1: As shown in FIG. 2 and FIG. 3, a centralized motor controller for conveniently configuring a motor is connected to an application system controller for receiving an instruction of an application system controller to control operation of a plurality of independent motors. The utility model comprises a mother circuit board, a plurality of sub-circuit boards and a plurality of motors, a power supply part and a motherboard microprocessor are arranged on the mother circuit board, the power part supplies power for each part circuit and each sub-circuit board, and the motherboard microprocessor receiving application system According to the instruction of the controller, the plurality of motors are three, which are respectively a first motor, a second motor and a third motor, and the first motor and the second motor use a permanent magnet synchronous motor without a motor controller, The three motors are AC motors. There are two sub-circuit boards. Each sub-board contains a sub-board microprocessor, an inverter unit and a rotor position detection unit. Each sub-board is connected to a permanent magnet without a motor controller. Synchronous motor, the sub-board microprocessor drives the permanent magnet synchronous motor without the motor controller through the inverter unit, and the rotor position detecting unit sends the rotor position data of the permanent magnet synchronous motor without the motor controller to the sub-board microprocessor, The circuit board and the plurality of sub-circuit boards are electrically connected by a connector, and the motherboard microprocessor establishes connection communication with the daughter board microprocessor.

The mother circuit board is provided with an AC motor drive interface, and the motherboard microprocessor controls the third motor through an AC motor drive interface, the AC motor drive interface includes a relay and a drive circuit thereof, and the motherboard microprocessor passes through The relay and its driving circuit control an AC motor; the motherboard microprocessor has built-in or external memory, the memory stores the motor operating parameters and the operating mode; the motherboard microprocessor communicates with each sub-board microprocessor via a bus, the bus Distributed in the mother circuit board; the application system controller is an air conditioning system controller or a HVAC system controller or a pump system controller or a washing machine controller or a car controller, and the power supply part includes a rectified current, a DC/DC step-down circuit .

As shown in FIG. 4, the permanent magnet synchronous motor of the motorless controller of the present invention is controlled by a sub-board microprocessor MCU, and the rotor position detecting unit is a phase current detecting unit, and the rotor position data is calculated by real-time phase current, phase current. The detection unit mainly includes the resistor R20 and A/D conversion, and uses the vector control of the position sensor to detect only the phase current of the motor winding and calculate the rotor position data. The inverter chip (INVERTER) is driven by the HVIC and the multi-drive unit. IGBT switches Ql, Q2, Q3, Q4, Q5, Q6 control the motor winding current, the circuit structure is simple, the measurement signal is small, the connection is simple, the circuit structure is simplified, and the cost is further reduced.

The motherboard microprocessor of the present invention receives the instruction of the application system controller, and communicates with each sub-board microprocessor through a bus mode, and the sub-board microprocessor controls the motorless controller according to the instruction sent by the motherboard microprocessor. Permanent magnet synchronous motor operation. Embodiment 2: As shown in FIG. 5, the difference from Embodiment 1 is that: the first motor, the second motor, and the third motor are both permanent magnet synchronous motors without a motor controller, and the motherboard microprocessor is connected. Block circuit boards, each of which is connected to a permanent magnet synchronous motor without a motor controller.

Embodiment 3: As shown in FIG. 6 and FIG. 7, the difference from Embodiment 1 is: The centralized motor controller of the present invention controls four motors, which are a first motor, a second motor, a third motor, and a fourth The motor, the first motor and the second motor use a permanent magnet synchronous motor without a motor controller, the third motor and the fourth motor are AC motors, and the sub-circuit boards have two pieces, each of which has a sub-board microprocessor , the inverter unit and the rotor position detecting unit, each of the sub-circuit boards is connected with a permanent magnet synchronous motor without a motor controller, and the sub-board microprocessor drives the permanent magnet synchronous motor without the motor controller through the inverter unit, and the rotor position The detecting unit sends the rotor position data of the permanent magnet synchronous motor without the motor controller to the daughter board microprocessor, and the mother circuit board and the plurality of sub circuit boards are electrically connected through the connector, the motherboard microprocessor and the daughter board microprocessor Establishing connection communication, two sub-circuit boards are respectively connected to control the first motor and the second motor, the mother circuit board is provided with an AC motor drive interface, and the motherboard microprocessor is powered by an alternating current Controlling the third motor drive interface, and a fourth motor, the AC motor drive interface comprises a relay and a driving circuit 2, a motherboard microprocessor 2 through the relay driving circuit controls the third and fourth motors and the motor, respectively.

Embodiment 4: FIG. 8 is different from the third embodiment in that: the centralized motor controller of the present invention controls four motors, which are a first motor, a second motor, a third motor, and a fourth motor, respectively. The motor, the second motor and the third motor both use a permanent magnet synchronous motor without a motor controller, the fourth motor is an AC motor, and the sub-circuit board has three blocks, each of which has a sub-board microprocessor and an inverter. Unit and rotor position detecting unit, each sub-board is connected with a permanent magnet synchronous motor without a motor controller, and the sub-board microprocessor drives a permanent magnet synchronous motor without a motor controller through an inverter unit, and the rotor position detecting unit will The rotor position data of the permanent magnet synchronous motor without motor controller is sent to the daughter board microprocessor, the mother circuit board and several sub circuit boards are electrically connected through the connector, and the motherboard microprocessor is connected with the daughter board microprocessor. Communication, three sub-circuit boards are respectively connected to control the first motor, the second motor and the third motor, the mother circuit board is provided with an AC motor drive interface, and the motherboard microprocessor controls the fourth motor through the AC motor drive interface. The AC motor drive interface includes a relay and a drive circuit thereof, and the motherboard microprocessor controls the fourth motor through a relay and a drive circuit thereof.

Embodiment 5: FIG. 9 is different from Embodiment 4 in that: the centralized motor controller of the present invention controls four motors, which are a first motor, a second motor, a third motor, and a fourth motor, respectively. The motor, the second motor, the third motor, and the fourth motor all use a permanent magnet synchronous motor without a motor controller, and the sub-circuit board has four blocks, each of which has a sub-board microprocessor, an inverter unit, and a rotor. Position detecting unit, each sub-board is connected with a permanent magnet synchronous motor without a motor controller, the sub-board microprocessor drives the permanent magnet synchronous motor without the motor controller through the inverter unit, and the rotor position detecting unit will have no motor control The rotor position data of the permanent magnet synchronous motor of the device is sent to the sub-board microprocessor, the female circuit board and the plurality of sub-circuit boards are electrically connected through the connector, and the motherboard microprocessor establishes connection communication with the sub-board microprocessor, 4 blocks The sub-circuit boards are respectively connected to control the first motor, the second motor, the third motor, and the fourth motor.

As shown in Fig. 10, the present invention has a mother circuit board 1 and four sub-circuit boards 2 electrically connected through a connector 3, and the motherboard microprocessor establishes connection communication with the daughter board microprocessor.

Embodiment 6: FIG. 11 is different from Embodiment 4 in that: the centralized motor controller of the present invention controls five motors, which are a first motor, a second motor, a third motor, a fourth motor, and a fifth The motor, the first motor, the second motor and the third motor both use a permanent magnet synchronous motor without a motor controller, the fourth motor and the fifth motor are AC motors, and the sub-circuit boards have three blocks, each of which has a sub-circuit board Sub-board microprocessor, inverter unit and rotor position detecting unit, each sub-board is connected with a permanent magnet synchronous motor without a motor controller, and the sub-board microprocessor drives the permanent magnet of the motorless controller through the inverter unit The synchronous motor, the rotor position detecting unit sends the rotor position data of the permanent magnet synchronous motor without the motor controller to the sub-board microprocessor, and the female circuit board and the plurality of sub-circuit boards are electrically connected through the connector, the motherboard microprocessor Establishing connection communication with the sub-board microprocessor, three sub-circuit boards are respectively connected to control the first motor, the second motor and the third motor, the mother circuit board is provided with an AC motor drive interface, and the motherboard microprocessor is exchanged The motor drive interface controls the fourth motor and the fifth motor, the AC motor drive interface includes two relays and a drive circuit thereof, and the motherboard microprocessor controls the fourth motor and the fifth motor respectively through two relays and a drive circuit thereof .

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and scope of the present invention are equivalent. The manner of replacement is included in the scope of protection of the present invention.

Claims

Rights request

1. A centralized motor controller that facilitates the configuration of motors. It is connected to the application system controller and used to receive instructions from the application system controller to control the operation of multiple independent motors. It is characterized by: It includes a bus circuit board, Several sub-circuit boards and multiple motors. The bus circuit board is equipped with a power supply section and a motherboard microprocessor. The power supply section supplies power to each part of the circuit and each sub-circuit board. The motherboard microprocessor receives instructions from the application system controller. The above-mentioned multiple motors are 3 or more, at least 2 motors adopt permanent magnet synchronous motors without motor controllers, and there are at least 2 sub-circuit boards, each sub-circuit board contains a sub-board microprocessor, Inverter unit and rotor position detection unit. Each sub-circuit board is connected to a permanent magnet synchronous motor without a motor controller. The sub-board microprocessor drives the permanent magnet synchronous motor without a motor controller through the inverter unit, and the rotor position is detected. The unit sends the rotor position data of the permanent magnet synchronous motor without a motor controller to the daughter board microprocessor. The bus circuit board and several sub circuit boards form electrical connections through connectors. The motherboard microprocessor and the daughter board microprocessor establish Connect communication.

2. A centralized motor controller for convenient motor configuration according to claim 1, characterized in that: the plurality of motors contain AC motors, an AC motor drive interface is provided on the bus circuit board, and the motherboard microprocessor The device drives the AC motor through the AC motor interface.

3. A centralized motor controller for convenient motor configuration according to claim 2, characterized in that: the AC motor drive interface includes at least one relay and its drive circuit, and the motherboard microprocessor passes a relay and Its drive circuit controls an AC motor.

4. A centralized motor controller for convenient motor configuration according to claim 1 or 2 or 3, characterized in that: the rotor position detection unit is a phase current detection unit, and the rotor position data is calculated through real-time phase current inferred.

5. A centralized motor controller for convenient motor configuration according to claim 1 or 2 or 3, characterized in that: the motherboard microprocessor has a built-in or external memory, and the memory stores the operation of the motor Parameters and operating modes.

6. A centralized motor controller that facilitates the configuration of motors according to claim 1 or 2 or 3, characterized in that: the motherboard microprocessor communicates with each daughter board microprocessor through a bus, and the bus is distributed in Bus circuit board.

7. A centralized motor controller for convenient motor configuration according to claim 1 or 2 or 3, characterized in that: the application system controller is an air conditioning system controller or an HVAC system controller or a pump system. Controller or washing machine controller or car controller.

8. A centralized motor controller for convenient motor configuration according to claim 6, characterized in that: the power supply part includes a rectified current and a DC/DC step-down circuit.