Drive control method, drive system, processing system and storage medium

Patent metadata

Field	Value
Publication number	US-11682987-B2
Application number	US-201917051510-A
Country	US
Kind code	B2
Filing date	May 2, 2019
Priority date	May 2, 2018
Publication date	Jun 20, 2023
Grant date	Jun 20, 2023

Abstract

A drive control method is applicable to a drive system including a driver, a bus and a motor, the motor being directly connected to the bus in a first connection mode or connected to the driver in a second connection mode. The drive control method includes the driver feeding an electric signal to the motor through the output port and simultaneously detecting its own actual output feature; and the driver determining whether the output port is connected to the bus according to the actual output feature. Upon the output port being determined not to be connected to the bus, the driver starts the motor normally. Upon the output port being determined to be connected to the bus, the driver disconnects the output port. In addition, a corresponding drive system, a processing system and a storage medium are disclosed.

First claim

The invention claimed is:

1. A drive control method applicable to a drive system including a driver, a bus and a motor, the motor being directly connected to the bus in a first connection mode or connected to the driver in a second connection mode, the drive control method comprising:
feeding a preset electric signal to the motor, via the driver, through an output port of the driver and simultaneously detecting an actual output frequency of the output port of the driver, the driver being configured to determine a switch interlock relationship by determining whether the output port is connected to the bus based on a comparison of the actual output frequency of the output port to the preset electric signal;
the driver starting the motor normally upon determining that the output port is not connected to the bus when the actual output frequency of the output port is not different from the preset electric signal; and
the driver disconnecting the output port upon determining that the output port is connected to the bus when the actual output frequency of the output port is different from the preset electric signal.

2. The drive control method of claim 1 , wherein the preset electric signal is a current signal or a voltage signal, and wherein a frequency of the electric signal is different from a frequency of the bus.

3. A non-transitory storage medium storing one or more programs, the one or more programs comprising instructions, and upon the instructions being executed by a data processing system, the data processing system is configured to execute the drive control method of claim 1 .

4. The drive control method of claim 1 , wherein the output port being connected to the bus indicates that the motor is connected in both the first connection mode and the second connection mode.

5. The drive control method of claim 2 , wherein the actual output frequency includes at least one of the actual output frequency or an energy flow direction of the output port.

6. The drive control method of claim 2 , wherein the actual output frequency includes at least whether an electric signal is collectable on a shunt resistor in an output port detection circuit of the output port.

7. The drive control method of claim 2 , wherein the actual output frequency includes at least whether a line end voltage signal is collectable on a voltage sampling resistor in an output port detection circuit of the output port.

8. A non-transitory storage medium storing one or more programs, the one or more programs comprising instructions, and upon the instructions being executed by a data processing system, the data processing system is configured to execute the drive control method of claim 2 .

9. The drive control method of claim 5 , wherein the determining whether the output port is connected to the bus according to the actual output frequency comprises:
comparing the actual output frequency of the output port with the frequency of the preset electric signal;
upon the comparing indicating that a difference between the actual output frequency and the frequency of the electric signal is greater than or equal to a threshold, determining that the output port is connected to the bus; and
upon the comparing indicating that the difference between the actual output frequency and the frequency of the electric signal is not greater than or equal to the threshold, determining that the output port is not connected to the bus.

10. The drive control method of claim 5 , wherein the determining whether the output port is connected to the bus according to the actual output frequency comprises:
determining an actual output energy flow direction of the output port;
upon the determining that the actual output energy flow direction of the output port is from the driver to the motor, determining that the output port is not connected to the bus; and
upon the determining that the actual output energy flow direction of the output port is from the motor to the driver, determining that the output port is connected to the bus.

11. A non-transitory storage medium storing one or more programs, the one or more programs comprising instructions, and upon the instructions being executed by a data processing system, the data processing system is configured to execute the drive control method of claim 5 .

12. A drive system, comprising:
a driver;
a bus; and
a motor, the motor being directly connected to the bus in a first connection mode or connected to the driver in a second connection mode,
wherein the driver is configured to
feed a preset electric signal to the motor through an output port of the driver and is configured to simultaneously detect an actual output frequency at the output port of the driver, the driver being further configured to determine a switch interlock relationship by
determining whether the output port is connected to the bus based on a comparison of the actual output frequency and the preset electric signal,
upon determining that the output port is not connected to the bus, the driver is configured to start the motor normally when the actual output frequency is not different from the preset electrical signal, and
upon determining that the output port is connected to the bus, the driver is configured to disconnect the output port when the actual output frequency is different from the preset electrical signal.

13. The drive system of claim 12 , wherein the preset electric signal is a current signal or a voltage signal, and wherein a frequency of the electric signal is different from a frequency of the bus.

14. The drive system of claim 12 , wherein the actual output frequency includes at least one of the actual output frequency or an energy flow direction of the output port.

15. The drive system of claim 12 , further comprising:
a first switch connected between the motor and the bus, the first switch configured to directly connect the motor to the bus in the first connection mode; and
a second switch connected between the motor and the driver, the second switch configured to connect the motor to the driver in the second connection mode.

16. A processing system, comprising
one or more processors; and
a memory storing one or more programs configured to be executed by the one or more processors, the one or more programs including instructions for executing a drive control method applicable to a drive system including a driver, a bus and a motor, the motor being directly connected to the bus in a first connection mode or connected to the driver in a second connection mode, the drive control method including
feeding a preset electric signal to the motor, via the driver, through an output port of the driver and simultaneously detecting an actual output frequency at the output port of the driver, the driver being configured to determine a switch interlock relationship by determining whether the output port is connected to the bus according to a comparison of the actual output frequency to the preset electric signal;
the driver starting the motor normally upon determining that the output port is not connected to the bus when the actual output frequency of the output port is not different from the preset electric signal; and
the driver disconnecting the output port upon determining that the output port is connected to the bus when the actual output frequency of the output port is different from the preset electric signal.

17. The processing system of claim 16 , wherein the preset electric signal is a current signal or a voltage signal, and wherein a frequency of the preset electric signal is different from a frequ

Assignees

• Siemens Ag

Inventors

• Hu Hao
• Guo yong lin
• Li Bin
• Wang Yu
• Li peng cheng

Classifications

• H04L12/40

  Bus networks · CPC title

• H02P1/025

  Protection against starting if starting resistor is not at zero position · CPC title

• H02P1/04 Primary

  Means for controlling progress of starting sequence in dependence upon time or upon current, speed, or other motor parameter · CPC title

• H04L2012/40273

  the transportation system being a vehicle · CPC title

• H02P1/00 Primary

  Arrangements for starting electric motors or dynamo-electric converters (starting of synchronous motors with electronic commutators H02P6/20, H02P6/22; starting dynamo-electric motors rotating step by step H02P8/04; vector control H02P21/00) · CPC title