1. A novel high-power motor excitation device is characterized by comprising a main control box and a fault emergency excitation box;

the main control box comprises a first excitation device, a second excitation device and a reversible control device;

two ends of the first excitation device and the second excitation device are respectively connected with the main motor control station and the reversible control device;

the other end of the reversible control device is connected with the main motor and is used for controlling the reversible operation of the main propulsion motor in forward and reverse rotation;

the main control box is of a chopper main body structure, and basic function units of the main control box comprise an input filter, a chopper main circuit, an output filter, input given coupling, redundant coupling control, chopper control protection and a fault alarm module.

2. The novel high-power motor excitation device according to claim 1, further comprising a fault emergency excitation box, wherein the fault emergency excitation box is a current limiting resistor module and is used for limiting excitation current when a chopping excitation fault is switched to a fixed excitation mode.

3. A control system for a novel high-power motor excitation device as claimed in any one of claims 1-2, characterized in that the control system for the novel high-power motor excitation device comprises:

the signal acquisition module is used for acquiring data information through the detection sensor;

the signal processing module is used for carrying out signal conditioning work such as filtering, amplification and the like on the signals collected by the sensor and then inputting the signals into the controller for processing;

the control module is used for processing the acquired information through the controller;

the signal output module is used for outputting a control signal according to the processing result of the controller;

the power amplification module is used for amplifying the output control signal through the power amplifier and inputting the amplified control signal into the active vibration absorber;

and the power supply module is used for providing a 190-320V direct-current amplitude voltage power supply through the storage battery pack.

4. A control method for operating the novel high-power motor excitation device as claimed in any one of claims 1-2, characterized in that the control method for the novel high-power motor excitation device comprises the following steps:

the main power supply is a 190-320V direct-current amplitude and voltage power supply provided by a storage battery pack, and direct current provided by the direct-current power supply is chopped by a chopper after passing through an input contactor and a filter so as to provide exciting current for an exciting winding of the main propulsion motor;

the chopper adopts two groups of 4 chopping modules, the modules realize hot backup work in the running process of the excitation device, and once one or N modules have faults (N <3), the rest chopping modules can realize seamless switching; when the number of the fault modules reaches or exceeds 3, the excitation device can be switched to a fault emergency excitation box, so that the forward and reverse rotation adjustment of the main propulsion motor can be realized, and the fault excitation current for emergency can be provided.

5. A program storage medium for receiving user input, the stored computer program making electronic equipment execute the control method of the novel high-power motor excitation device of claim 4.

6. A computer program product stored on a computer readable medium, comprising a computer readable program for providing a user input interface to implement the method of controlling the novel high power motor excitation device of claim 4 when executed on an electronic device.

Background

At present: the motor excitation device provides excitation current for the main propulsion motor, and the ship navigation speed and the ship navigation direction are adjusted by adjusting the excitation hand wheel. The novel motor excitation device changes the original excitation unit into the static chopper, can realize all functions of the excitation unit, improves the reliability of the excitation unit and increases the protection function.

The propulsion motor excitation system is used for ship navigation speed regulation, forward and reverse control and system safety protection, and is an important device for ship navigation maneuver. The typical composition equipment comprises a rotary excitation machine set, a machine set starting control box, and ship navigational speed adjusting, forward and reverse reversible control and related protection equipment which are arranged in a main propulsion motor control station.

Through the above analysis, the problems and defects of the prior art are as follows: at the present stage, the sailing speed and the sailing direction of a ship are still adjusted by the excitation hand wheel for the motor excitation device, but the novel high-power motor excitation device provided by the invention changes the original excitation unit into a static chopper, so that all functions of the excitation unit can be realized, the reliability of the excitation unit is improved, and the protection function is increased.

The difficulty in solving the above problems and defects is: no hot backup, poor fault tolerance, difficult control method change, no user interface and poor compatibility.

The significance of solving the problems and the defects is as follows: the novel high-power motor excitation device changes an original excitation unit into a static chopper, a main power supply supplies a 190-320V direct-current amplitude and voltage power supply through a storage battery pack, and after the direct-current amplitude and voltage power supply passes through an input contactor and a filter, the chopper chops direct current supplied by the direct-current power supply to supply excitation current for an excitation winding of a main propulsion motor; therefore, all functions of the excitation unit can be realized, and the reliability and the protection effect are improved. The chopper adopts two groups of 4 chopping modules, the modules realize hot backup work in the running process of the excitation device, and once one or N modules have faults (N <3), the rest chopping modules can realize seamless switching; when the number of the fault modules reaches or exceeds 3, the excitation device can be switched to a fault emergency excitation box, so that the forward and reverse rotation adjustment of the main propulsion motor can be realized, and the fault excitation current for emergency can be provided. A program storage medium for receiving user input is also provided, and the stored computer program makes the electronic equipment execute the control method of the novel high-power motor excitation device. A computer program product stored on a computer readable medium, comprising a computer readable program and executable on an electronic device, is provided providing a user input interface to implement a method of controlling a novel high power motor excitation device.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a novel high-power motor excitation device and a control system and a control method thereof.

The invention is realized in this way, a new high-power motor excitation device includes the master control box and the failure emergency excitation box;

the main control box comprises a first excitation device, a second excitation device and a reversible control device;

two ends of the first excitation device and the second excitation device are respectively connected with the main motor control station and the reversible control device;

the other end of the reversible control device is connected with the main motor and is used for controlling the reversible operation of the main propulsion motor in forward and reverse rotation;

the main control box is of a chopper main body structure, and basic function units of the main control box comprise an input filter, a chopper main circuit, an output filter, input given coupling, redundant coupling control, chopper control protection and a fault alarm module.

Furthermore, the novel high-power motor excitation device further comprises a fault emergency excitation box, wherein the fault emergency excitation box is a current limiting resistor module and is used for limiting current of excitation when a chopping excitation fault is switched to a fixed excitation mode.

Another object of the present invention is to provide a control system for a novel excitation device of a high power motor, the control system comprising:

the signal acquisition module is used for acquiring data information through the detection sensor;

the signal processing module is used for carrying out signal conditioning work such as filtering, amplification and the like on the signals collected by the sensor and then inputting the signals into the controller for processing;

the control module is used for processing the acquired information through the controller;

the signal output module is used for outputting a control signal according to the processing result of the controller;

the power amplification module is used for amplifying the output control signal through the power amplifier and inputting the amplified control signal into the active vibration absorber;

and the power supply module is used for providing a 190-320V direct-current amplitude voltage power supply through the storage battery pack.

Another object of the present invention is to provide a method for controlling a novel excitation device of a high power motor, the method comprising:

the main power supply is a 190-320V direct-current amplitude and voltage power supply provided by a storage battery pack, and direct current provided by the direct-current power supply is chopped by a chopper after passing through an input contactor and a filter so as to provide exciting current for an exciting winding of the main propulsion motor;

the chopper adopts two groups of 4 chopping modules, the modules realize hot backup work in the running process of the excitation device, and once one or N modules have faults (N <3), the rest chopping modules can realize seamless switching; when the number of the fault modules reaches or exceeds 3, the excitation device can be switched to a fault emergency excitation box, so that the forward and reverse rotation adjustment of the main propulsion motor can be realized, and the fault excitation current for emergency can be provided.

Another object of the present invention is to provide a program storage medium for receiving user input, the stored computer program making an electronic device execute the control method of the novel high-power motor excitation device.

Another object of the present invention is to provide a computer program product stored on a computer readable medium, which includes a computer readable program, when the computer program product is executed on an electronic device, the computer program product provides a user input interface to implement the control method of the novel high-power motor excitation device.

By combining all the technical schemes, the invention has the advantages and positive effects that: the motor excitation device of the invention provides excitation current for the main propulsion motor, and realizes the adjustment of the sailing speed and the change of the sailing direction of the ship by adjusting the excitation hand wheel. The novel motor excitation device changes the original excitation unit into the static chopper, can realize all functions of the excitation unit, improves the reliability of the excitation unit and increases the protection function.

Drawings

Fig. 1 is a structural schematic diagram of a novel high-power motor excitation device provided by an embodiment of the invention.

Fig. 2 is a schematic block diagram of a novel high-power motor excitation device provided by the embodiment of the invention.

Fig. 3 is a flowchart of a control method of a novel high-power motor excitation device according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Aiming at the problems in the prior art, the invention provides a novel high-power motor excitation device, a control system and a control method thereof, and the invention is described in detail below with reference to the accompanying drawings.

As shown in fig. 1 and fig. 2, the novel high-power motor excitation device provided by the embodiment of the invention uses a static excitation device, and the device adopts a split structure and is composed of a main control box and a fault emergency excitation box.

The main control box is arranged at the position of an original exciter unit and forms a chopper main structure comprising an excitation device I (a channel I), an excitation device II (a channel II) and a reversible control device.

The basic function units comprise input filter, chopper main circuit, output filter, input given coupling, redundant coupling control, chopper control protection, fault alarm and other function circuit units.

The basic principle is that the chopping controller regulates the duty cycle to stabilize the output voltage (current) according to a given setting.

The input/output filter is used for improving the electromagnetic compatibility of the chopper circuit; the forward and reverse reversible control module is used for controlling forward and reverse reversible operation of the main propulsion motor; and the fault alarm module is used for alarming the fault of the excitation system.

The fault emergency excitation box is arranged at the position of a starting box of an original excitation unit, and the main composition structure of the fault emergency excitation box is mainly a current limiting resistor module and used for limiting excitation current when a chopping excitation fault is switched to a fixed excitation mode.

The controller is a carrying platform of control software and is the basis for realizing the control law. Under the control of control software, the controller regularly realizes the functions of signal acquisition, signal processing, signal output control and the like. The controller also undertakes control of the signal lamp of the control box panel. The controller is composed of an NI PXIe-1071 chassis, an NI PXIe-8135RT control module, an NI PXIe-6368 signal acquisition module and an NI PXI-6733 signal output module 4.

The main technical indexes of the controller are as follows:

main technical indexes of NI PXIe-8135RT control module

(1) A processor: TMS28335 DSP chip;

(2) the support system comprises: NI LabVIEW Real-Time 2013 version or higher.

Main technical indexes of NI PXIe-6368 signal acquisition module

(1) Input signal type: simulating a voltage;

(2) the number of channels: 16;

(3) resolution ratio: 16 bits;

(4) measuring range: -10V to + 10V;

(5) precision: 2.24 mV;

(6) frequency range: 2 MS/s;

(7) timing type: hardware timing;

(8) an input mode is as follows: and (4) differential input.

Main technical indexes of NI PXI-6733 signal output module

(1) Output signal type: simulating a voltage;

(2) the number of channels: 8, the number of the cells is 8;

(3) resolution ratio: 16 bits;

(4) measuring range: -10V to + 10V;

(5) precision: 2.24 mV;

(6) frequency range: 1 MS/s;

(7) timing type: and hardware timing.

4, main technical indexes of NI PXIe-1071 case

(1) Power supply requirements: 110-240V and 50-60 Hz;

(2) rated power consumption: 230W.

5. Power amplifier

Since the voltage type control signal outputted by the controller does not have a load capacity, the control signal must be amplified by the power amplifier before being inputted into the active vibration absorber. The analog power amplifier is widely applied due to good linear characteristic, but has the defects of large volume, low efficiency, large heat productivity and the like. In the active vibration absorption device of the hydraulic pump, each active vibration absorber needs to be matched with a power amplifier, so the characteristic of large demand on the power amplifier exists. Considering that the installation space of a real ship is limited, and the power consumption on the ship also influences the cruising ability of the ship, the traditional analog power amplifier is not suitable for the device. The project group focuses on the digital power amplifier with higher efficiency, less heat productivity and smaller volume, and the efficiency of the power amplifier can reach more than 85%.

According to the index requirement, each path of power amplifier can provide power output of at least 150W, and according to the reliability requirement, a certain power margin is reserved for the power amplifier in the design process. The design process is integrated with the reliability design, the service life is prolonged, and the device has the performances of salt spray resistance, high and low temperature, vibration resistance, impact resistance and the like.

The digital power amplifier mainly comprises a power supply module and a power amplification module. Each power amplification module contains two groups of power amplifiers.

The main technical indexes of each group of power amplifiers are as follows:

(1) power supply requirements: DC +/-55V;

(2) fixing the gain: 40 dB;

(3) input range: -5V to + 5V;

(4) rated output power: 200W @4 omega;

(5) frequency range: 20Hz to 1 kHz;

(6) working temperature: 0-55 ℃;

(7) over-temperature, over-current, over-voltage, surge (surge) protection and indication is provided.

Technical parameters of the matched power supply:

(1) input voltage: AC127V + -10%, 50 Hz;

(2) output voltage: DC +/-55V +/-5V;

(3) power consumption: less than or equal to 2 kW;

(4) a cooling mode: and cooling by a fan.

6. Charge amplifier

The existing mature charge amplifier products on the market are adopted, and the signals collected by the acceleration sensor are mainly subjected to signal conditioning work such as filtering, amplification and the like, and then are input into the controller for processing.

The main technical indexes of the charge amplifier are as follows:

input range: plus or minus 100 PC;

sensor sensitivity: fixing and selecting;

gain: 100mV/PC (fixed optional);

output range: +/-5V;

power supply requirements: DC + -15V.

It should be noted that the embodiments of the present invention can be realized by hardware, software, or a combination of software and hardware. The hardware portion may be implemented using dedicated logic; the software portions may be stored in a memory and executed by a suitable instruction execution system, such as a microprocessor or specially designed hardware. Those skilled in the art will appreciate that the apparatus and methods described above may be implemented using computer executable instructions and/or embodied in processor control code, such code being provided on a carrier medium such as a disk, CD-or DVD-ROM, programmable memory such as read only memory (firmware), or a data carrier such as an optical or electronic signal carrier, for example. The apparatus and its modules of the present invention may be implemented by hardware circuits such as very large scale integrated circuits or gate arrays, semiconductors such as logic chips, transistors, or programmable hardware devices such as field programmable gate arrays, programmable logic devices, etc., or by software executed by various types of processors, or by a combination of hardware circuits and software, e.g., firmware.

The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims.