TWI498762B - Ship Passive Harmonic Passive Filter Design System - Google Patents

Description

Ship Power Harmonic Passive Filter Design System

The invention relates to a design system, in particular to a ship power harmonic passive filter design system.

In recent years, Taiwan's shipbuilding industry (especially yachts) has gradually gained its edge in the international market through its technological upgrading, product transformation and customized services, with its high customer-friendliness and low production costs. In order to meet the requirements of future customers for green energy, environmental protection, safety, etc., the ship industry is constantly introducing the latest electronic control technology and equipment, semiconductor components, power converters, motor drives, and inverters to meet the shipowners. Energy saving, safety, and control requirements.

However, the above-described introduction of the electronic device based non-linear loads, during use will produce harmonics (Harmonic) current and harmonic current by the impedance when the ship power system, harmonic currents will cause a pressure drop, and further A problem of voltage distortion occurs, causing harmonic voltages to appear on the busbars. The interference of these harmonics not only causes the measurement error on the instrument, but also causes the resonance to be destroyed due to the impedance of the ship's power system impedance, thus jeopardizing the safety of the ship during navigation.

Since the ship's harmonic source equipment is numerous and limited in space, it is more appropriate and feasible to install a passive filter on the main switchboard for harmonic improvement from a management point of view. In this case, if the passive filter can be carefully designed, while improving the system harmonics, the virtual power compensation capability of the capacitive component in the passive filter can be fully utilized to provide a partial reactive current and improve the power factor of the ship generator. Further mention Increase operating efficiency to reduce fuel consumption of marine generators. The main difference between this design concept and the land-based system is that the energy saving of the ship generator is considered in the passive filter design, so that the passive filter can maximize its benefits. Here, the power quality and efficiency improvement are defined as the reduction of the voltage and current harmonic distortion rate on the ship and the reduction of the fuel consumption caused by the improvement of the power factor of the generator. In order to improve the power quality and efficiency of marine generators, this paper proposes a passive filter design mode that combines harmonic improvement and energy saving of generators.

In view of the deficiencies mentioned in the prior art, the inventors provide a solution for a ship power harmonic passive filter design system, comprising: a first human machine interface: the first human machine interface The utility model comprises a construction frame, which can be used for constructing a minimum power requirement data of a ship power system, a rated voltage data of a ship power system, a harmonic order data to be filtered, and a ship power system rating Frequency data, a generator impedance data, and a current amount data for each harmonic order.

One processor:

The processor is electrically connected to the first human interface, and the processor writes a first design program, where the first design program is executable by the processor: taking the reactive power minimum demand data and the rated voltage data, and calculating the passive type The fundamental frequency of the filter at the fundamental frequency is the reactance value, and the fundamental reactance value and the harmonic order data are filtered, and the passive filter is used to filter the harmonic resistance value of the harmonic order. Taking the capacitive reactance value and the rated frequency data, and calculating the capacitance of the passive filter to filter the harmonic order a value, taking the capacitive reactance value and the harmonic order data to be filtered, calculating the inductive reactance value of the passive filter to filter the harmonic order, taking the inductive reactance value and the rated frequency data, and calculating the passive type The filter is used to filter out the inductance value of the harmonic order.

The processor writes a second design program, the two design programs are executable by the processor: taking the harmonic order data, the rated frequency data, the capacitance value, and the inductance value, and calculating the passive filtering In order to filter out the apparent reactance of the harmonic order, take the impedance data of the generator and the harmonic order data, and calculate the reactance value of the generator to filter out the harmonic order. The apparent reactance, the generator reactance value, and the current amount data are calculated by the passive filter to filter out the harmonic order current amount, and the harmonic order current amount, the capacitive reactance value, and To filter the harmonic order data, calculate the harmonic order voltage to be filtered by the passive filter, take the apparent reactance value and the rated voltage data, calculate the current value of the processor at the fundamental frequency, and take The capacitive reactance value and the current value calculate an operating voltage value of the passive filter at a fundamental frequency.

The processor writes a third design program, the third design program is executable by the processor: taking the operating voltage value, and the amount of the harmonic order voltage to be filtered, and calculating the minimum withstand voltage value of the passive filter Taking the current value and the harmonic order current amount to be filtered, and calculating the minimum current resistance value of the passive filter.

The processor writes a fourth design program, the fourth design program is executable by the processor: displaying the minimum withstand voltage value, the minimum withstand current value, the capacitance value, and the inductance value on the first human machine The display box of the interface.

Therefore, through the design system provided by the inventor, the shipowner can display various necessary materials through the first human machine interface, and then display in the first human machine interface. A suitable passive filter specification (including: current value, inductance value, minimum current resistance value, and minimum withstand voltage value) is used to filter the harmonic current generated when the ship's power system is actuated to allow the ship to It improves the safety of power consumption during navigation. At the same time, the passive filter will provide virtual power, which will help reduce the ineffective current of the ship generator, thereby improving the efficiency of the generator operation and achieving the goal of energy saving and carbon reduction for ship power generation.

The construction, features and embodiments of the present invention are illustrated by the accompanying drawings, which will be further understood by the review.

The following description refers to the fourth figure and the fifth figure. The present invention relates to a ship power harmonic passive filter design system, including:

One human machine interface (1):

Please refer to the first figure and the second figure, the human interface (1) is electrically connected to a first human interface (2), and a first selection box (11) is selected in the human interface (1). (input Data), you can enter a first human machine interface (2) (see the second figure), the first human machine interface (2) includes three building frames (21, 22, 23) and build a boat load electrical box (24), the build box (21) available to build the generator voltage data (V), a generator impedance data (X _G), the generator rated power (Kw). The construction frame (22) can be used to construct a minimum power requirement data ( Q _C ) of a ship power system, a rated voltage data ( V _S ) of a ship power system, and a rated frequency data of a ship power system ( f _S ). The building frame (23) can be used to construct a harmonic order data ( h ). Wherein, the harmonic order data ( h ) to be filtered is preferably a positive integer.

One processor:

The processor is electrically connected to a load device harmonic current database, and a load data is built in the ship load construction frame (24) (including the quantity and type of each yacht load device, as shown in the table) After the hydraulic pump, the air conditioner, and the blower, the processor executes a setup program, and according to the load data, and the harmonic current database of the load device, completes the current amount data of each harmonic order ( I _h ), and presented in the first human machine interface (2) by a current data frame (25), thereby letting the user know the harmonic order to be filtered, and determining the desired harmonic filtering Wave order data ( h ).

The minimum power requirement data ( Q _C ) is the virtual power supplied to the system by the ship generator. If more than two passive filters are used (please refer to the second figure, the construction box (22) If the number of filter segments refers to the number of passive filters, the minimum required data ( Q _C ) of the reactive power should be evenly distributed according to the number of passive filters. For example, if the passive power of a passive filter is 13.11 ( kVar), if the passive filter is two, the power change is changed to input 6.56 (kVar). And the first human interface (2) includes a return button (27), and the return button (27) is selected to return to the human interface (1).

The ship referred to in the present invention generally refers to various ships, such as yachts, fishing boats, etc. The following description of the present invention is a yacht to illustrate the advantages of the present invention, and the ship power system may be referred to simply as ship power. Wherein, the human-machine interface (1) sequentially displays the yacht length, the generator output power, the number of generators, the rated voltage data of the ship power system, and the rated frequency data of the ship power system from top to bottom, and One to third selection boxes (11, 12, 13).

The processor writes a first design program, wherein the first design program is configured to perform the following steps: taking the invalid power minimum demand data ( Q _C ) and the rated voltage data ( V _S ), and operating the passive filter The fundamental frequency at the fundamental frequency is the apparent reactance value ( X _F ). Where the processor is utilized To calculate the fundamental frequency reactance value ( X _F ).

Afterwards, the processor takes the fundamental frequency reactance value ( X _F ) and the harmonic order data ( h ), and calculates the capacitive reactance value of the passive filter to filter the harmonic order ( X _C ). The operation of the processor is sequentially used: X _F ? | X _C ? X _L |, X _C ? h ² * X _L , To calculate the capacitive reactance value ( X _C ). Wherein, the harmonic order of the harmonic order data to be filtered is a positive integer.

Then, the processor takes the capacitive reactance value ( X _C ) and the rated frequency data ( f _S ), and calculates the capacitance value ( C ) of the passive filter to filter the harmonic order. The computing system of the processor is: To calculate the capacitance value ( C ).

Then, the processor takes the capacitive reactance value ( X _C ) and the harmonic order data ( h ), and calculates the inductive reactance value ( X _L ) of the passive filter to filter the harmonic order. Where the processor is utilized To calculate the inductive reactance value ( X _L ).

Thereafter, the processor takes the inductive reactance value ( X _L ) and the rated frequency data ( f _S ), and calculates the inductance value ( L ) of the passive filter to filter the harmonic order, wherein the processor utilizes: To calculate the inductance value ( L ).

For the power system of the ship and the yacht, the first design program can calculate the appropriate capacitance value and inductance value of the passive filter. Next, the load demand of the passive filter needs to be confirmed as will be described later to determine the appropriate current resistance value and withstand voltage value of the passive filter.

The processor writes a second design program, wherein the second design program can be used by the processor to perform the following steps: taking the harmonic order data ( h ), the rated frequency data ( f _S ), the capacitance value (C), and the inductance value (L), calculating the passive filters to filter out the harmonic orders to be followed depending on the reactance (X _Fh), wherein the processor utilizes To calculate the apparent reactance ( X _Fh ).

Then, the processor takes the generator impedance data ( X _G ) and the harmonic order data ( h ), and calculates the generator reactance value ( X _Gh ) of the generator to filter the harmonic order. Where the processor utilizes X _Gh ? h * X _G , to calculate the generator reactance value ( X _Gh ).

Then, the processor takes the apparent reactance ( X _Fh ), the generator reactance value ( X _Gh ), and the current amount data ( I _h ), and calculates the harmonic order current amount to be filtered by the passive filter. ( I _Fh ), where the processor utilizes To calculate the amount of harmonic order current ( I _Fh ) to be filtered out.

After that, the processor takes the harmonic order current amount ( I _Fh ), the capacitive reactance value ( X _C ), and the harmonic order data ( h ) to be filtered, and the operation is filtered by the passive filter. In addition to the harmonic order voltage ( V _Ch ), where the processor utilizes To calculate the amount of harmonic order voltage ( V _Ch ) to be filtered out.

Then, the processor takes the fundamental frequency reactance value ( X _F ) and the rated voltage data ( V _S ) operation, and calculates the current value ( I _{F 1} ) of the passive filter at the fundamental frequency, wherein the processor utilizes To calculate the current value ( I _{F 1} ).

Then, the processor takes the capacitive reactance value ( X _Fh ) and the current value ( I _{F 1} ), and calculates an operating voltage value ( V _{C 1} ) of the passive filter at a fundamental frequency, wherein the processor utilizes V _{C 1} ? I _{F 1} * X _C , to calculate the operating voltage value ( V _{C 1} ).

The processor writes a third design program, and the third design program is configured to perform the following steps: taking the operating voltage value ( V _{C 1} ), and filtering the harmonic order voltage amount ( V _Ch ) Calculating the minimum withstand voltage of the passive filter ( ), where the processor is utilized To calculate the minimum withstand voltage value ( ).

Then, the processor takes the current value ( I _{F 1} ) and the harmonic order current amount ( I _Fh ) to be filtered, and calculates the minimum current resistance value of the passive filter ( ), where the processor is utilized To calculate the minimum current resistance value ( ).

The processor writes a fourth design program, and the fourth design program is executable by the processor: the display frame (26) of the first human machine interface (2) displays the specifications of the passive filter, as shown in the figure. The display preferably includes the minimum current resistance value (Ifrms (A)_tmp), the minimum withstand voltage value (Vcmax (V)_tmp), the minimum withstand current input value (Ifrms (A)), the Minimum withstand voltage input value (Vcmax(V)), inductance value (L(mH)), and capacitance value (C(μF)), so that the shipowner can know the passive filter through the display frame (26). What are the appropriate specifications?

Through the design system of the present invention, a passive filter of a suitable specification can be provided for a power system of a ship of different specifications and designs (such as a yacht) and a harmonic order to be filtered, wherein the specification includes: a filter Minimum current resistance, minimum withstand voltage of the filter, capacitance of the filter, and inductance of the filter. Therefore, the shipowner can use the design system of the present invention to select a passive filter of a more appropriate specification, and reduce the harmonic order generated by the ship power system during operation, thereby improving the safety during navigation to solve the previous problem. The shortcomings of the technology. In addition, after the harmonics in the ship power system are reduced, the power generation load of the ship generator is also reduced, thereby reducing the fuel consumption of the ship generator, and the energy saving effect is achieved. And the ship owner can directly and clearly know the harmonic order in the ship power system through the current data frame (25). The amount of current, and through the display frame (26), can be used to understand the specifications of a more suitable passive filter.

In addition, in order to prevent different minimum withstand voltage values from affecting the capacitance value of the passive filter, the design system of the present invention may be further implemented by: the processor writing a correction program, the correction program being executable by the processor The following steps: take the minimum withstand voltage value ( ), the minimum power requirement data ( Q _C ), and the rated voltage data, and the minimum required correction amount of the invalid power of the ship power system ( ). Among them, the processor utilizes: To calculate the minimum power correction amount of the invalid power ( ).

Then, the processor takes the minimum demand correction amount ( ) and the minimum withstand voltage value ( ), calculate the capacitive reactance correction value of the passive filter ( ). The processor is used: And calculate the capacitance correction value ( ).

Afterwards, the processor takes the harmonic order data ( h ) and the capacitive reactance correction value ( ), calculating the inductive impedance correction value of the passive filter ( ). Where the processor is taken To calculate the inductive impedance correction value ( ).

Then, the processor takes the capacitive reactance correction value ( And the rated frequency data ( f _S ), the capacitance correction value ( C ^' ) of the passive filter is calculated. Among them, the processor utilizes: To calculate the capacitance correction value ( C ^' ). The processor takes the inductive impedance correction value ( And the rated frequency data ( f _S ), the inductance correction value ( L ^' ) of the passive filter is calculated. Where the processor is utilized To calculate the inductance correction value ( L ^' ).

Since the inductance value ( L ) includes the inductance correction value ( L ^' ), the capacitance value ( C ) includes the capacitance correction value ( C ^' ), and the processor displays the display in the display frame (26). Passive filters are more suitable specifications, and their specifications include the inductance correction value ( L ^' ), the capacitance correction value ( C ^' ), and the minimum withstand voltage value ( ) and minimum flow resistance ( ).

Please refer to the third fitting shown, in order to allow the owner may be more appropriate specifications is clear that the passive input filter, the total harmonic distortion of the vessel power demand systems (total harmonic demand distortion, TDD) , and To filter out the harmonic order, followed by harmonic distortion rate demand (individual harmonic demand distortion, IDD) . Therefore, the design system of the present invention can also be implemented as follows: the processor writes a fifth design program, and the fifth design program can be used by the processor to perform the following steps: electrically connecting a passive filter for filtering harmonic orders Equivalent impedance data ( X _Fthh ), a load basic wave current maximum data ( After that, the processor takes the passive filter equivalent impedance data ( X _Fthh ), the current amount data ( I _h ), and the generator reactance value ( X _Gh ), according to The operation is to filter out the harmonic current ( I _Sh ) of the harmonic order, and then the processor takes the maximum value of the basic wave current of the load ( ), and the system harmonic current ( I _Sh ), according to: , Calculation of total harmonic distortion of the vessel power demand systems (I _TDD), and the harmonic orders to be filtered off, followed by harmonic distortion rate requirements _(I TDDh), then to the second man-machine interface (3) of the a first display frame (31) and the second display frame (32) show the total harmonic distortion rate demand _(I TDDh), and harmonic distortion rate demand (I _TDD).

The human-machine interface (1) is electrically connected to the second human-machine interface (3), so after the second selection frame (12) is selected from the human-machine interface (1), the second human-machine interface is entered ( 3), the owner can demand that the total harmonic distortion rate _(I TDDh), and harmonic distortion rate demand (I _Sh) (3) by the second man-machine interface. The second human interface (3) includes a third display frame, which displays the current quantity of each harmonic order in the ship power system, the specification of the passive filter, and the passive filtering of various specifications. The harmonic current is filtered after the system is put into the system.

In order to let the shipowner know the filtering effect of the passive filter of different specifications, the second human machine interface (3) further includes a selection button (34), and when the ship owner selects the selection button (34), it will be in the first The improvement effect is shown in the three display frame (33), for example, the third column in the third figure (including the column "the harmonic current input to the first segment filter"), when the user selects the selection above the third column After the key, the lower half of the third column will show the improvement of the harmonic current of the overall marine power system after the passive filter of this specification is put into operation. In addition, the second human interface (3) includes a return button (35) that enters the human interface (1) when the return button (35) is selected. In addition, the human interface (1) includes a third selection frame (13), and after selecting the third selection frame (13), the minimum withstand current value, the minimum withstand voltage value, the capacitance value, And the inductance value, preferably, the first human machine interface (1) and the second human machine interface (3) are printed in a paper form.

In summary, the present invention is indeed in line with industrial utilization, and is not found in publications or publicly used before application, nor is it known to the public, and has non-obvious knowledge, conforms to patentable requirements, and patents are filed according to law. .

However, the above-mentioned statements are a more appropriate embodiment of the invention in the industry, and all the equivalent changes made according to the scope of the patent application of the present invention belong to the scope of the claim.

(1) ‧‧‧Human Machine Interface

(11) ‧‧‧ first choice box

(12)‧‧‧Second selection box

(13) ‧‧‧ third choice box

(2) ‧‧‧First Human Machine Interface

(21)‧‧‧Building frame

(22)‧‧‧Building frame

(23)‧‧‧Building frame

(24) ‧‧‧Ship power load construction frame

(25)‧‧‧ Current data box

(26)‧‧‧Display box

(27)‧‧‧ Return button

(3) ‧‧‧Second human machine interface

(31)‧‧‧First display box

(32)‧‧‧Second display box

(33) ‧‧‧ third display box

(34)‧‧‧Selection key

(35)‧‧‧ Return button

The first figure is a schematic diagram of the human machine interface of the present invention.

The second figure is a schematic diagram of the first human interface of the present invention.

The third figure is a schematic diagram of the second human machine interface of the present invention.

The fourth figure is a flow chart of the various design programs of the present invention.

The fifth picture is the flow chart of each design program connected to the fourth figure.

Claims (6)

A marine power harmonic passive filter design system includes: a first human machine interface: the first human machine interface includes a construction frame, and the construction frame can be used to construct a minimum power requirement data of a ship power system , the rated voltage data of a ship power system, a harmonic order data, a rated frequency data of a ship power system, a generator impedance data, and a current quantity data of each harmonic order; a processor Electrically connecting the first human interface, the processor writes a first design program, the first design program is executable by the processor: taking the reactive power minimum demand data and the rated voltage data, and operating the passive filter The fundamental frequency of the fundamental frequency is regarded as the reactance value, and then the fundamental frequency reactance value and the harmonic order data are filtered, and the passive filter is used to filter the harmonic resistance value of the harmonic order. And taking the capacitive reactance value and the rated frequency data, calculating the capacitance value of the passive filter to filter out the harmonic order, and then taking the capacitive reactance value and the harmonic order data to be filtered, and calculating the passive filter In order to filter out the inductive reactance value of the harmonic order, and then take the inductive reactance value and the rated frequency data, and calculate the inductance value of the passive filter to filter out the harmonic order; the processor writes a second a design program, the second design program is executable by the processor: taking the harmonic order data, the rated frequency data, the capacitance value, and the inductance value, and calculating the passive filter to filter harmonics The order is determined by the reactance, and then the impedance data of the generator and the harmonic order data are filtered, and the generator reactance value of the generator is filtered to remove the harmonic order, and then the apparent reactance is taken. The generator reactance value and the current amount data are calculated by being The dynamic filter wants to filter out the harmonic order current quantity, and then takes the harmonic order current quantity, the capacitive reactance value, and the harmonic order data to be filtered, and the operation is filtered by the passive filter. In addition to the harmonic order voltage quantity, the apparent reactance value and the rated voltage data are calculated, the current value of the processor at the fundamental frequency is calculated, and the capacitive reactance value and the current value are obtained, and the passive filter is calculated. The operating voltage value at the fundamental frequency; the processor writes a third design program, the third design program is executable by the processor: taking the operating voltage value, and the amount of the harmonic order voltage to be filtered, and calculating the The minimum withstand voltage value of the passive filter, and then the current value, and the amount of harmonic order current to be filtered, the minimum current resistance value of the passive filter is calculated; the processor writes a fourth design program, the first The fourth design program is executable by the processor to display the minimum withstand voltage value, the minimum withstand current value, the capacitance value, and the inductance value in a display frame of the first human machine interface. For example, in the ship power harmonic passive filter design system described in claim 1, the processor writes a correction program, and the correction program is executable by the processor: taking the minimum withstand voltage value and the minimum power requirement data of the invalid power. And the rated voltage data, calculating a minimum required correction amount of the invalid power of the ship power system, taking the minimum demand correction amount and the minimum withstand voltage value, calculating a capacitive reactance correction value of the passive filter, and taking the desired filter Calculating the inductive reactance correction value of the passive filter in addition to the harmonic order data and the capacitive reactance correction value, taking the capacitive reactance correction value and the rated frequency data, and calculating the capacitance correction value of the passive filter, Calculating the inductance correction value of the passive filter according to the inductive impedance correction value and the rated frequency data; and the fourth design program is executable by the processor: the minimum withstand voltage value, The minimum withstand current value, the capacitance correction value, and the inductance correction value are displayed on a display frame of the first human machine interface. For example, the ship power harmonic passive filter design system described in claim 2, wherein the processor is electrically connected to a passive filter equivalent impedance data for filtering harmonic orders, and a load basic wave current maximum value. The processor writes a fifth design program, and the fifth design program is executable by the processor: taking the passive filter equivalent impedance data, the current amount data, and the generator reactance value, and calculating followed by addition harmonic order harmonic current systems, to take the fundamental wave current maximum data carrier, and the harmonic current system, each calculation of total harmonic distortion of the vessel power demand systems (total harmonic demand distortion, TDD) and harmonic orders to be filtered off, followed by harmonic distortion rate demand (individual harmonic demand distortion, IDD) , then in a second man-machine interface of the first display frame and the second display frame show the total harmonic demand Distortion rate, and the harmonic demand distortion rate of the harmonic order to be filtered out. The ship power harmonic passive filter design system according to claim 3, wherein the second human machine interface comprises a third display frame and a selection button, and the third display frame is selected after the selection button is selected. The improvement result after the passive filter is put into the ship power system is shown. The ship power harmonic passive filter design system according to claim 4, further comprising a human machine interface, the human machine interface includes a first to third selection frame, the first selection frame is available for selection and then enters the a first human-machine interface, the second selection frame is available for selection to enter the second human-machine interface, and the third selection frame is operable to print the capacitance value, the inductance value, the minimum withstand voltage value, and the minimum Resistance to flow; The first and second human-machine interfaces respectively include a return button, and the return button is available for selection to enter the human-machine interface. The ship power harmonic passive filter design system according to claim 1, wherein the processor is electrically connected to a load device harmonic current database, and the first human machine interface comprises a ship power load construction frame. The ship power load building frame is configured to build a load data, and the processor writes a building program, wherein the building program is executable by the processor: according to the load data and the harmonic current database of the load device The current amount data is built and displayed on the first human machine interface.