Power generation device

Abstract

The utility model provides a power generation device, which is characterized in that a first excitation regulator and a second excitation regulator which are mutually connected in parallel are connected between an exciter and an excitation winding of a generator, the generator is also connected with a first output loop and a second output loop, and the mode selection switch is switched through the switching operation of the mode selection switch. The excitation regulator and the output loop can be synchronously switched, meanwhile, the unit controller is controlled to switch internal parameters, and the output loop monitored by the unit controller is controlled, so that when the output voltage of the generator is matched with the switched internal parameters of the unit controller, it is confirmed that the output voltage reaches the standard; and the unit controller is used for controlling the circuit breakers on the corresponding output loops to be switched on, so that the switching of output voltage is realized. According to the power generation device provided by the utility model, by additionally arranging the excitation regulator, the output voltage of the generator is adjustable, no transformer needs to be added, the hardware cost is low, switching can be completed only by operating the mode selection switch, and the operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of power generation technology, and in particular to a power generation device. Background Technology

[0002] When using a diesel generator set to supply power to a load, under normal circumstances, the voltage and frequency of the diesel generator set are consistent with the load. When the mains power supply fails or needs maintenance, the diesel generator set is started to supply power to the load. For some diesel generator sets used in vehicles or for rental, a single voltage output cannot meet the needs of the operating conditions. In such operating conditions, multiple voltage outputs of the generator set are required.

[0003] Currently, the commonly used solution is to output two voltage power supplies. One solution is to use the diesel generator set to output its rated voltage, and then add a transformer to this rated voltage. When voltage switching is required, the load is connected to the transformer, and the transformer switches the diesel generator set's rated voltage to the required voltage. This solution increases the cost of the transformer and requires additional installation space.

[0004] Another common approach for diesel generator sets with dual output voltages is to adjust an external potentiometer. When voltage switching is needed, the external potentiometer changes the generating voltage, thus achieving voltage regulation and allowing for different output voltage levels. However, this method requires manually changing the potentiometer's resistance to adjust the output voltage, even in automatic mode, making it inconvenient. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a power generation device to solve the problems of high cost or inconvenient adjustment operation of existing diesel generator sets with multiple voltage outputs.

[0006] This utility model provides a power generation device, including: an exciter, a generator, a unit controller, and a mode selection switch, wherein,

[0007] A first excitation regulator is connected between the excitation winding of the exciter and the generator, and a second excitation regulator is connected in parallel with the first excitation regulator.

[0008] The generator is connected to a first output circuit and a second output circuit, and a first circuit breaker and a second circuit breaker are connected in series on the first output circuit and the second output circuit, respectively.

[0009] The mode selection switch includes a first control loop and a second control loop. The first control loop and the second control loop are respectively provided with a first relay and a second relay. One side of the first control loop and the second control loop are respectively connected to the input side of the first output loop and the second output loop. The other side of the first control loop and the second control loop are connected in parallel to the generator output voltage sampling terminal of the unit controller.

[0010] One contact switch of the first relay is connected in series in the enable circuit of the parameter switching enable terminal of the unit controller, and two contact switches of the first relay with opposite actions are connected in series in the output paths of the first excitation regulator and the second excitation regulator, respectively.

[0011] The contact switches of the first relay and the second relay are also coupled to the control terminals of the first circuit breaker and the second circuit breaker;

[0012] The output control terminal of the unit controller is coupled to the control terminals of the first circuit breaker and the second circuit breaker.

[0013] Optionally, the two contact switches of the first relay are connected in series in the energized paths of the closing coil and the opening coil of the first circuit breaker, respectively, and the two contact switches of the second relay are connected in series in the energized paths of the closing coil and the opening coil of the second circuit breaker, respectively.

[0014] The output control terminal of the unit controller includes a time-division closed control relay and a closed control relay. The two contact switches of the closed control relay are connected in series in the energized paths of the closed coils of the first circuit breaker and the second circuit breaker, respectively. The two contact switches of the closed control relay are connected in series in the energized paths of the closed coils of the first circuit breaker and the second circuit breaker, respectively.

[0015] Optionally, the mode selection switch is a rotary switch.

[0016] Optionally, the generator output voltage sampling terminal of the unit controller is a three-phase sampling terminal.

[0017] Optionally, a mechanical interlocking structure is also provided between the first circuit breaker and the second circuit breaker.

[0018] The power generation device provided by this utility model includes: an exciter, a generator, a unit controller, and a mode selection switch. A first excitation regulator is connected between the excitation winding of the exciter and the generator, and a second excitation regulator is connected in parallel with the first excitation regulator. The generator is also connected to a first output circuit and a second output circuit. By switching the mode selection switch, the excitation regulator and the output circuit can be switched synchronously, simultaneously controlling the unit controller to switch its internal parameters and monitor the output circuit. When the generator's output voltage matches the switched internal parameters of the unit controller, the output voltage is confirmed to be up to standard. Then, the unit controller controls the circuit breaker on the corresponding output circuit to close, achieving the switching of the output voltage. The power generation device provided by this utility model achieves adjustable generator output voltage by adding an excitation regulator, eliminating the need for a transformer and reducing hardware costs. Switching can be completed simply by operating the mode selection switch, making operation convenient. Through the combined control of the unit controller and the mode selection switch, the output voltage quality after voltage switching can be effectively controlled, ensuring the effectiveness and reliability of voltage switching. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main module structure of the power generation device in this embodiment of the utility model;

[0020] Figure 2 This is a partial structural schematic diagram of the power generation device in an embodiment of the present utility model;

[0021] Figure 3 and Figure 4 This is a schematic diagram of the main control circuit structure of the two circuit breakers of the power generation device in this embodiment of the present invention.

[0022] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0023] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0024] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] To address the issues of high cost or inconvenient operation in existing multi-voltage output diesel generator sets, this invention provides a generator unit comprising: an exciter, a generator, a generator controller, and a mode selection switch. A first excitation regulator is connected between the exciter and the generator's excitation winding, and a second excitation regulator is connected in parallel with the first excitation regulator. The generator is also connected to a first output circuit and a second output circuit. By switching the mode selection switch, the excitation regulator and the output circuit can be switched synchronously, simultaneously controlling the generator controller to switch its internal parameters and monitor the output circuit. When the generator's output voltage matches the switched internal parameters of the generator controller, the output voltage is confirmed to be within acceptable limits. Then, the generator controller controls the circuit breaker on the corresponding output circuit to close, achieving the output voltage switching. By adding an excitation regulator, the generator's output voltage can be adjusted without adding a transformer, resulting in low hardware costs. Switching is only required by operating the mode selection switch, making operation convenient. The combined control of the generator controller and the mode selection switch effectively controls the output voltage quality after voltage switching, ensuring the effectiveness and reliability of voltage switching.

[0027] The excitation regulator includes a constant machine terminal voltage regulating type and a constant excitation current regulating type, both of which can achieve the excitation regulation purpose of this utility model. In practice, the appropriate type can be selected according to specific needs, and this application does not make any special limitation on this.

[0028] Specifically, please refer to Figures 1 to 4 The diagram shows the structural schematic of each part of the power generation device in this embodiment of the present invention, which includes: an exciter 10, a generator 20, a mode selection switch 30, and a unit controller 40. A first excitation regulator 11 is connected between the excitation windings of the exciter 10 and the generator 20, and a second excitation regulator 12 is connected in parallel with the first excitation regulator 11. The configuration parameters of the first excitation regulator 11 and the second excitation regulator 12 are different from each other to provide different excitation current outputs, so that the generator 20 provides different specifications of output voltage under different excitation currents.

[0029] To prevent the load from being connected to the wrong voltage specification, in this embodiment, the generator 20 is connected to a first output circuit 201 and a second output circuit 202. A first circuit breaker QF1 and a second circuit breaker QF2 are connected in series on the first output circuit 201 and the second output circuit 202, respectively. When switching the output voltage specification, the circuit breaker is controlled to switch the output circuit, and different voltage specifications are output from different output circuits.

[0030] The mode selection switch 30 includes a first control loop and a second control loop, such as... Figure 2 As shown, the first control circuit and the second control circuit are respectively equipped with a first relay KA1 and a second relay KA2. In this embodiment, their working voltage is 24V DC. One side of the first control circuit and the second control circuit are also connected to the input side of the first output circuit 201 and the second output circuit 202, respectively. The other side of the first control circuit and the second control circuit are connected in parallel to the generator output voltage sampling terminal B02 of the unit controller 40. The first contact switch KA1-1 and the second contact switch KA1-2 of the first relay KA1 are connected in series in the output circuit of the first excitation regulator 11 and the second excitation regulator 12, respectively.

[0031] The first contact switch KA1-1 and the second contact switch KA1-2 operate in opposite directions, conducting in a time-sharing manner. By switching the control circuit through the operation mode selection switch 30, the energization state of the first relay KA1 is changed, controlling one of the first contact switches KA1-1 and the second contact switch KA1-2 to conduct, thereby switching the excitation regulator connected to the excitation winding of the generator 20 and switching the power generation specifications of the generator 20.

[0032] The third contact switch KA1-3 of the first relay KA1 is connected in series in the enable circuit of the parameter switching enable terminal B01 of the unit controller 40. When the energized state of the first relay KA1 is switched, the switching state of the third contact switch KA1-3 is switched synchronously, causing the enable signal state connected to the parameter switching enable terminal B01 to flip. This can switch the internal parameters of the unit controller 40, so that the unit controller 40 can monitor and regulate the output voltage of the generator 20 according to the switched internal parameters, and stabilize the output voltage of the generator 20 at the corresponding specification.

[0033] The contact switches of the first relay KA1 and the second relay KA2 are also coupled to the control terminals of the first circuit breaker QF1 and the second circuit breaker QF2. The closing and opening control of the two circuit breakers are controlled by the energized state of the two relays respectively. The output control terminal of the unit controller 40 is also coupled to the control terminals of the first circuit breaker QF1 and the second circuit breaker QF2. The closing and opening of the two circuit breakers are jointly controlled by the mode selection switch 30 and the unit controller 40, which reduces the possibility of false triggering and improves the controllability of output switching.

[0034] Specifically, such as Figure 3 and Figure 4 As shown, in this embodiment, the two sets of fourth contact switches KA1-4 of the first relay KA1 are connected in series in the energizing paths of the closing coil and the opening coil of the first circuit breaker QF1, respectively. Similarly, the two sets of fifth contact switches KA2-1 of the second relay KA1 are connected in series in the energizing paths of the closing coil and the opening coil of the second circuit breaker QF2, respectively. When the mode selection switch 30 selects the first relay KA1 for energization, the two sets of fourth contact switches KA1-4 are turned on, selecting the first circuit breaker QF1, and the first output circuit 201 is engaged. When the second relay KA2 is selected for energization, the two sets of fifth contact switches KA2-1 are turned on, selecting the second circuit breaker QF2, and the second output circuit 202 is engaged.

[0035] The output control terminals of the unit controller 40 include a time-division closed control relay KA3 and a time-division open control relay KA4. The two sets of sixth contact switches KA3-1 of the closed control relay KA3 are connected in series in the energized paths of the closing coils of the first circuit breaker QF1 and the second circuit breaker QF2, respectively. The two sets of seventh contact switches KA4-1 of the time-division open control relay KA4 are connected in series in the energized paths of the opening coils of the first circuit breaker QF1 and the second circuit breaker QF2, respectively. After the circuit breaker is selected to be engaged by the mode selection switch 30, the unit controller 40 also monitors whether the output voltage of the generator 20 is consistent with the internal parameters after the switch. After confirming that the output voltage meets the requirements, the corresponding circuit breaker is controlled to close, which can ensure the reliability of the output voltage.

[0036] For ease of control and to maintain the control state, in this embodiment, the mode selection switch 30 is a rotary switch.

[0037] Corresponding to the three-phase generator, the generator output voltage sampling terminal B02 of the unit controller 40 is a three-phase sampling terminal, and the corresponding phase lines of the two sets of three-phase lines of the two control loops are connected in parallel to the three-phase sampling terminal.

[0038] To further improve the single selectivity of the output circuit, in this embodiment, a mechanical interlock structure 301 is also provided between the first circuit breaker QF1 and the second circuit breaker QF2. The mechanical interlock structure 301 mechanically connects the moving contacts of the first circuit breaker QF1 and the second circuit breaker QF2. When one of the moving contacts is closed, the other moving contact is simultaneously driven to open through the transmission of the mechanical interlock structure 301, thus preventing the two output circuits from opening at the same time.

[0039] The power generation device provided by this utility model has a first excitation regulator connected between the excitation winding of the exciter and the generator, and a second excitation regulator connected in parallel with the first excitation regulator. The generator is also connected to a first output circuit and a second output circuit. By switching the mode selection switch, the excitation regulator and the output circuit can be switched synchronously. At the same time, the unit controller switches the internal parameters and monitors the output circuit. When the generator's output voltage matches the internal parameters of the unit controller after the switch, the output voltage is confirmed to be up to standard. Then, the unit controller controls the circuit breaker on the corresponding output circuit to close, thereby realizing the switching of the output voltage. By adding an excitation regulator, the generator output voltage can be adjusted without adding a transformer, resulting in low hardware costs. Switching can be completed simply by operating the mode selection switch, making operation convenient. Through the joint control of the unit controller and the mode selection switch, the output voltage quality after voltage switching can be effectively controlled, ensuring the effectiveness and reliability of voltage switching.

[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] The embodiments described above are merely illustrative of several specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A power generation device, characterized in that, include: Exciter, generator, unit controller and mode selection switch, among which, A first excitation regulator is connected between the excitation winding of the exciter and the generator, and a second excitation regulator is connected in parallel with the first excitation regulator. The generator is connected to a first output circuit and a second output circuit, and a first circuit breaker and a second circuit breaker are connected in series on the first output circuit and the second output circuit, respectively. The mode selection switch includes a first control loop and a second control loop. The first control loop and the second control loop are respectively provided with a first relay and a second relay. One side of the first control loop and the second control loop are respectively connected to the input side of the first output loop and the second output loop. The other side of the first control loop and the second control loop are connected in parallel to the generator output voltage sampling terminal of the unit controller. One contact switch of the first relay is connected in series in the enable circuit of the parameter switching enable terminal of the unit controller, and two contact switches of the first relay with opposite actions are connected in series in the output paths of the first excitation regulator and the second excitation regulator, respectively. The contact switches of the first relay and the second relay are also coupled to the control terminals of the first circuit breaker and the second circuit breaker; The output control terminal of the unit controller is coupled to the control terminals of the first circuit breaker and the second circuit breaker.

2. The power generation device according to claim 1, characterized in that, The two contact switches of the first relay are connected in series in the energizing paths of the closing coil and the opening coil of the first circuit breaker, respectively; the two contact switches of the second relay are connected in series in the energizing paths of the closing coil and the opening coil of the second circuit breaker, respectively. The output control terminal of the unit controller includes a time-division closed control relay and a closed control relay. The two contact switches of the closed control relay are connected in series in the energized paths of the closed coils of the first circuit breaker and the second circuit breaker, respectively. The two contact switches of the closed control relay are connected in series in the energized paths of the closed coils of the first circuit breaker and the second circuit breaker, respectively.

3. The power generation device according to claim 1, characterized in that, The mode selection switch is a rotary switch.

4. The power generation device according to claim 1, characterized in that, The generator output voltage sampling terminal of the unit controller is a three-phase sampling terminal.

5. The power generation device according to claim 1, characterized in that, A mechanical interlocking structure is also provided between the first circuit breaker and the second circuit breaker.

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