CENTRALIZED MOTOR CONTROLLER

• US 20140320052A1
• Filed: 07/17/2014
• Published: 10/30/2014
• Est. Priority Date: 07/28/2012
• Status: Active Grant

• Current Assignee: Zhongshan Broad-Ocean Motor Company Limited
• Original Assignee: Zhongshan Broad-Ocean Motor Company Limited
• Inventors: ZHAO, Yong, HU, Ge, ZHOU, Yiqiao, LU, Chuping
• Granted Patent: US 9,859,825 B2
• Time in Patent Office: Days
• US Class Current: 318/400.32
• CPC Class Codes: F24F 11/70 Control systems characterised by their outputs; Constructional details thereof
• CPC Class Codes: H02P 2207/05 Synchronous machines, e.g. with permanent magnets or DC excitation
• CPC Class Codes: H02P 27/06 using dc to ac converters or inverters H02P27/05 takes precedence
• CPC Class Codes: H02P 31/00 Arrangements for regulating or controlling electric motors not provided for in groups H02P1/00 - H02P5/00, H02P7/00 or H02P21/00 - H02P29/00
• CPC Class Codes: H02P 5/74 controlling two or more ac dynamo-electric motors H02P5/46, H02P5/60 take precedence
• CPC Class Codes: H02P 6/18 without separate position detecting elements

Abstract

A centralized motor controller for receiving commands from an application system controller and for controlling operation of a plurality of independent motors. The centralized motor controller includes: a power supply; a microprocessor; and an interface circuit for motor control including at least two inverter units and two rotor position detection units. The power supply supplies power for each circuit part. The motors are controlled by the microprocessor via the interface circuit for motor control. The number of the motors is equal to or more than three, in which, at least two of the motors are permanent magnet synchronous motors in the absence of a motor controller. The permanent magnet synchronous motors are driven by the microprocessor via the inverter units, respectively. Rotor position data of the permanent magnet synchronous motors are transmitted to the microprocessor via the rotor position detection units, respectively.

Claims

1. A centralized motor controller for receiving commands from an application system controller and for controlling operations of a plurality of independent motors, the centralized motor controller comprising:

a) a power supply;

b) a microprocessor; and

c) an interface circuit for motor control, the interface circuit for motor control comprising at least two inverter units and two rotor position detection units;

wherein

the power supply supplies power for each circuit part;

the motors are controlled by the microprocessor via the interface circuit for motor control;

a number of the motors is equal to or more than three, in which, at least two of the motors are permanent magnet synchronous motors in the absence of a motor controller;

the permanent magnet synchronous motors are driven by the microprocessor via the inverter units, respectively; and

rotor position data of the permanent magnet synchronous motors are transmitted to the microprocessor via the rotor position detection units, respectively.

2. The centralized motor controller of claim 1, wherein

the motors comprise an AC motor;

the interface circuit for motor control comprises a relay and a drive circuit thereof; and

the AC motor is controlled by the microprocessor via the relay and the drive circuit thereof.

3. The centralized motor controller of claim 1, wherein

the motors are all permanent magnet synchronous motors in the absence of motor controllers;

the interface circuit for motor control comprises a plurality of inverter units and a plurality of rotor position detection units; and

one motor is connected to the microprocessor via one inverter unit and one rotor position detection unit.

4. The centralized motor controller of claim 1, wherein the rotor position detection unit is a phase current detection unit;

and the rotor position data are calculated by real time phase current.

5. The centralized motor controller of claim 4, wherein the microprocessor is provided with an internal or external memory for storing operating parameters and operating models of the motors.

6. The centralized motor controller of claim 5, wherein

the application system controller is an air conditioning system controller, an HVAC system controller, a pump system controller, a washing machine controller, or an automotive controller;

and

the microprocessor is connected to the application system controller via a user interface.

7. The centralized motor controller of claim 6, wherein

the power supply, the microprocessor, the user interface, and the memory are integrated on a main circuit board;

one inverter and one rotor position detection unit are integrated on one daughter circuit board; and

the main circuit board and the daughter circuit boards are connected via connector ports and connectors.

8. A centralized motor controller for receiving commands from an application system controller and for controlling operations of a plurality of independent motors, the centralized motor controller comprising:

a) a mother circuit board, the mother circuit board comprises a power supply and a first microprocessor; and

b) a plurality of daughter circuit boards, each daughter circuit board comprising a second microprocessor, an inverter unit, and a rotor position detection unit;

wherein

the power supply supplies power to each circuit part and each daughter circuit board;

the first microprocessor receives commands from the application system controller;

a number of the motors is equal to or more than three, in which, at least two of the motors are permanent magnet synchronous motors in the absence of a motor controller;

at least two daughter circuit boards are provided;

each daughter circuit board is connected to one permanent magnet synchronous motor;

the permanent magnet synchronous motors are driven by the second microprocessors via the inverter circuits, respectively;

rotor position data of the permanent magnet synchronous motors are transmitted to the second microprocessors via the rotor position detection units, respectively;

the mother circuit board and the daughter circuit boards form electric connection via connectors; and

the first microprocessor communicates with the second microprocessors.

9. The centralized motor controller of claim 8, wherein

the motors comprise an AC motor;

the mother circuit board is provided with a drive interface for the AC motor; and

the AC motor is controlled by the first microprocessor via the drive interface.

10. The centralized motor controller of claim 9, wherein

the drive interface for the AC motor comprises at least one relay and a drive circuit thereof;

and

one of the AC motors is controlled by the first microprocessor via one of the relays and the drive circuit thereof.

11. The centralized motor controller of claim 8, wherein the rotor position detection unit is a phase current detection unit;

and the rotor position data are calculated by real time phase current.

12. The centralized motor controller of claim 10, wherein the rotor position detection unit is a phase current detection unit;

and the rotor position data are calculated by real time phase current.

13. The centralized motor controller of claim 8, wherein the first microprocessor is provided with an internal or external memory for storing operating parameters and operating modes of the motors.

14. The centralized motor controller of claim 10, wherein the first microprocessor is provided with an internal or external memory for storing operating parameters and operating modes of the motors.

15. The centralized motor controller of claim 8, wherein the first microprocessor communicates with the second microprocessors via a bus mode;

and a bus is distributed on the mother circuit board.

16. The centralized motor controller of claim 10, wherein the first microprocessor communicates with the second microprocessors via a bus mode;

and a bus is distributed on the mother circuit board.

17. The centralized motor controller of claim 8, wherein the application system controller is an air conditioning system controller, an HVAC system controller, a pump system controller, a washing machine controller, or an automotive controller.

18. The centralized motor controller of claim 10, wherein the application system controller is an air conditioning system controller, an HVAC system controller, a pump system controller, a washing machine controller, or an automotive controller.

19. The centralized motor controller of claim 15, wherein the power supply comprises a commutated current and a DC/DC step-down circuit.

20. The centralized motor controller of claim 16, wherein the power supply comprises a commutated current and a DC/DC step-down circuit.