RU2438223C1 - Electric power supply system with uninterrupted power supply - Google Patents

Abstract

FIELD: electricity. ^ SUBSTANCE: system includes starter-generator, relay governor, storage batteries, uninterrupted power supply unit, control unit, group of switches and relay of starter-generator. Uninterrupted power supply unit has direct and return electric connection to control unit. Control unit has return electric connection to tachometer, relay of starter-generator and relay governor. Outputs of relay governor have return electric connections to starter-generator and relay of starter-generator. Relay of starter-generator has direct electric connection to storage batteries and starter-generator and return electric connection to storage batteries. ^ EFFECT: supply of power to consumers of the facility with electric power of the required quality in all application conditions of the facility. ^ 1 dwg

Description

The invention relates to the field of weapons and military equipment, and in particular to power supply systems.

A known system of electric starting of the engine and power supply of consumers of electric energy, consisting of a start-up circuit and a circuit of the charging circuit and power of consumers of electric energy (see Product 188A1. Technical description. 188A TO. Part 1. - p.128. Open edition. Prototype) .

The engine starting circuit is intended for electric engine starting. It includes: rechargeable batteries; alarm unit; starter-generator (in starter mode); starter-generator relay; starter starter; matching automation device; socket and plug for external start.

In the present invention, only the relay of the starter-generator will be considered, the remaining elements of the engine starting circuit do not interact with the proposed system and do not affect the order of its functioning. The use of a power supply system with an uninterruptible power supply unit also does not affect the operation of the engine starting circuit.

The circuit of the charging circuit and power supply of consumers of electric energy is intended to provide electricity to consumers and recharge batteries. The circuit includes a starter-generator (operating in generator mode); relay controller; battery protection unit; a multimeter with a shunt and batteries.

The power supply to consumers is provided by a relay-regulator, starter-generator and storage batteries. A voltammeter with a shunt is a control and measuring device, and the battery protection unit refers to protection devices; these elements do not affect the functioning of the proposed system and will not be considered in the present invention.

If the voltage of the starter-generator exceeds the voltage of the batteries by 0.2-1 V, the relay-controller connects the starter-generator to the on-board network. When the engine speed decreases, the voltage of the starter-generator becomes lower than the voltage of the batteries, and with a reverse current of 25-50 A, the relay-controller disconnects the starter-generator from the on-board network.

When the starter-generator is disconnected from the on-board network, batteries are supplied to consumers. The starter-generator connected to the on-board network, in addition to supplying consumers, also recharges the batteries. The starter-generator operates only when the main engine of the machine is running.

In addition to the above systems, the system proposed in this invention interacts with a tachometer related to the instrumentation of the object.

The circuit of the charging circuit and the power supply of consumers of electric energy plays a decisive role in ensuring the combat readiness of an armament model, since only with its uninterrupted operation in the framework of the requirements of the technical conditions is reliable and uninterrupted operation of all consumers of the combat vehicle provided.

Currently, due to the increase in the number of electricity consumers, the starter-generator installed on the machine is not able to provide them with electricity of a given quality. And since the amount of power given by the starter-generator depends on the frequency of operation of the main engine of the machine, a significant part of the time the generator does not give the rated power.

So, when the turret is turned by an arms stabilizer with a transfer speed, the amount of power consumed by it more than doubles, and the total power consumed by all consumers of electricity begins to exceed the rated power of the generator.

The problem of energy security is especially acute when conducting a defensive battle, when, based on the requirements of camouflage and fuel economy, the main engine of the weapon model will not work. Under these conditions, only rechargeable batteries can be used as a source of electricity in machines. And since their capacity is established only on the basis of the conditions for ensuring reliable engine start-up of the facility, their capacity is not enough to power the main consumers of the combat vehicle.

Thus, the disadvantage of the circuit of the charging circuit and the supply of electric energy to consumers is the mismatch between the capabilities of its sources of electricity and the needs of consumers of a combat vehicle.

The objective of the present invention is to provide power to consumers of an object with electricity of the required quality in all conditions of use of the object.

This problem is solved by introducing an uninterruptible power supply unit, a control unit and a block of switches assembled from an element base used in systems of objects of armored vehicles into the well-known charging circuit and power consumers of electric energy.

Moreover, the power supply system with an uninterruptible power supply unit, comprising a starter-generator, a relay-regulator, rechargeable batteries and characterized in that it includes an uninterruptible power supply unit, a control unit and a switch block, the outputs of which have direct electrical connection with consumers of electrical energy , starter-generator relay, uninterruptible lithium aggregate and control unit, and feedback from the starter-generator relay, relay-regulator, control unit and agr an uninterruptible power supply atom, which, in turn, has direct and reverse electrical communication with a control unit, which has electrical feedback with a tachometer, a starter-generator relay and a relay-regulator, the outputs of which have reverse electrical connections with a starter-generator and a starter-relay generator, which, in turn, has a direct electrical connection with the batteries and the starter-generator and a reverse electrical connection with the batteries.

The invention is illustrated in the drawing, which shows a functional diagram of a power supply system with an uninterruptible power supply.

The following notation is adopted in the drawing: 1 - consumers of electrical energy (P); 2 - rechargeable batteries (AB); 3 - starter-generator (SG); 4 - relay controller (PP); 5 - starter-generator relay (RSG); 6 - block of switches (PSU); 7 - uninterruptible power supply (UPS); 8 - control unit (BU); 9 - tachometer (T).

Consumers of electrical energy 1 are designed to ensure the functioning of the combat vehicle in its intended purpose. In this case, by consumers of electric energy are meant all elements and systems for the functioning of which electric energy is necessary.

Rechargeable batteries 2 are designed to provide electric energy to the starter-generator (in starter mode) when starting the main engine (main function); power consumers with a non-functioning starter-generator; parallel "buffer" work with the starter-generator. In the latter case, they perform two main tasks: feeding consumers when the starter-generator does not provide the necessary power output; smoothing voltage ripples.

The starter-generator 3 is designed to start the main engine of the machine in the starter mode, and power consumers, and recharge the batteries when the main engine is in generator mode.

The relay-regulator 4 is designed to automatically connect and disconnect the starter-generator in the generator mode from the electrical network, to maintain the voltage of the starter-generator within the specified limits, to suppress high-frequency radio noise created by the starter-generator.

The relay of the starter-generator 5 is designed to switch batteries from one type of connection to another to obtain a voltage of 48 V when starting the engine.

The switch unit 6 is designed to transmit information to the control unit about which of the machine's systems is turned on, and to connect an uninterruptible power supply unit to power specific elements or systems from the composition of electricity consumers.

It is a set of relays that switch the power supply circuit of consumers of electric energy from a starter-generator to an uninterruptible power supply unit, according to a signal from a control unit. In addition, the design of the switch block provides for automatic switching of consumer power circuits from the uninterruptible power supply unit to the starter-generator (batteries) when the system powered by the uninterruptible power supply is disconnected.

Also in the switch block there is a device that reduces the voltage from 48 to 27 V, to provide power to consumers during engine start-up.

Uninterruptible power supply unit 7 is designed to generate electrical energy for power consumers and recharge batteries (including in case of failure of the starter-generator or using the machine with the engine turned off). The power of the uninterruptible power supply unit should provide the consumers, for the power of which it will be used, with electricity of the required quality in any modes of their operation.

The uninterruptible power supply unit can be used in two ways: as an auxiliary source of electricity (the main method is when the main engine is running at a frequency at which the power supplied by the starter-generator is not sufficient to provide all consumers of electricity) and as the main source of electricity (with a faulty starter generator or when the main engine of the machine is idle). In addition, an uninterruptible power supply unit can be used to ensure the start of the main engine of the machine.

The uninterruptible power supply unit is an energy unit made in the form of a pair - a “thermal engine-electric machine generator”. The uninterruptible power supply unit is launched from regular power sources installed on the machine, but at the same time it is possible to start from an external power source, using the external start socket of the base machine.

The control unit 8 is designed to start and control the operation of the uninterruptible power supply unit and the switch unit. The control unit has adjusting elements that determine the conditions and order of operation of the relay of the switch unit, as well as controls that enable, turn off and select the operating mode of the system.

Using the adjusting elements, it is determined when any elements or systems of the relay of the switch block are switched on that they will switch their power supply from the starter-generator (batteries) to the uninterruptible power supply unit.

This system can operate in standalone mode, continuous operation, servo mode, backup source mode, or not use any of these modes. In the latter case, the power supply system with an uninterruptible power supply unit works similarly to the prototype.

When the engine is idle, only autonomous mode is used; continuous operation mode, tracking mode and backup source mode are applied only when the engine of the machine is running.

In stand-alone mode, with the main engine not running, the uninterruptible power supply unit is used to power the consumers of the machine or to ensure the engine starts.

In continuous operation, after starting the main engine of the machine, the control unit starts the uninterruptible power supply unit. Next, the control unit monitors which consumers of the machine are turned on, and when consumers are turned on, for which the power from the uninterruptible power supply unit is determined, it sends a command to the switch block to switch this circuit to power from the uninterruptible power supply unit. In the future, the uninterruptible power supply unit operates continuously until the mode changes or the system turns off.

When operating in a follow-up mode, the control unit starts the drive motor of the uninterruptible power supply unit only after receiving a signal from the switch unit to turn on consumers for which the power from the uninterruptible power supply unit is determined. The power of these systems is switched only after the uninterruptible power supply unit is started; Prior to this, consumers are powered by a starter-generator (batteries). If all consumers whose power is installed from the uninterruptible power supply unit are turned off, the drive motor of the uninterruptible power supply unit is also turned off. The system functions in this way until the mode changes or the system turns off. Otherwise, the system works similarly to the continuous mode.

The backup source mode is optional and can be switched on simultaneously with the continuous operation mode and the follow-up mode; it is also possible to use it independently. If this mode is turned on, the power supply system with an uninterruptible power supply unit, when certain conditions are met, switches to it automatically.

When the backup source mode is enabled, the system operates in one of the previously enabled modes (continuous operation mode or tracking mode), while the control unit monitors the voltage level of the starter-generator. According to the signal from the relay regulator to reduce the voltage to a level at which the starter-generator is turned off and the batteries are supplied with power, the control unit sends a command to connect the uninterruptible power supply unit to recharge the batteries and power all the consumers of electricity (backup source mode )

Unlike other modes, in the backup source mode, to provide reverse connection of the generator to power consumers, 24 V voltage is supplied (in the remaining modes - 27 V).

When operating in a follow-up mode or when operating similarly to the prototype and the backup source mode is turned on, all consumers are connected also after starting the uninterruptible power supply unit. But the launch of the uninterruptible power supply unit occurs regardless of whether consumers whose power is installed from it have been turned on.

The system is designed in such a way that in the event of the start / shutdown of the main engine of the machine, the mode of operation automatically changes. If the mode for which the change is to take place is turned off, then the power supply system with an uninterruptible power supply unit functions similarly to the prototype.

The tachometer 9 is designed to measure the engine speed.

The operation of the power supply system with an uninterruptible power supply unit is illustrated in the drawing.

The following designations of signal types are adopted in the drawing: dashed line — information signal; solid line - control signal; double solid line - supply voltage.

The work of the prototype: consumers 1 is supplied with electric energy either from the batteries 2 or from the starter-generator 3 (only when the engine is running, if it is connected by a relay-regulator 4).

In the first case, the current flows through the circuit: batteries 2 - starter-generator relay 5 - switch block 6 - consumers 1. In the second case, the current flows through the circuit: starter-generator 3 - relay regulator 4 - switch block 6 - consumers 1 and, at the same time, from the block of switches 6 to the relay of the starter-generator 5 and to the batteries 2.

The relay-controller 4 connects the starter-generator 3, only if, as a result of comparing the voltage values coming from the batteries 2 and the starter-generator 3, the voltage of the starter-generator 3 exceeds the voltage of the batteries 2 by 0.2-1 V.

To start the engine from the batteries 2 through the relay of the starter-generator 5, voltage is supplied to the starter-generator 3, which carries out the start.

Autonomous mode: after turning on the power supply system, the current from the batteries 2 through the relay of the starter-generator 5 and the block of switches 6 starts to flow to the consumers of electricity 1.

To turn on the uninterruptible power supply unit 7, voltage is supplied to it by a command from the control unit 8 supplied to the switch unit 6, after the uninterruptible power supply unit 7 is turned on, the corresponding signal from it goes to the control unit 8. By To this signal, the control unit 8 sends a command to the switch unit 6 to connect the uninterruptible power supply unit 7 to power consumers 1 and recharge the batteries 2. A voltage of 27 V is supplied from the uninterruptible power supply unit 6.

During engine start, the relay of the starter-generator 5 switches the batteries 2 to a voltage of 48 V, a signal about this goes to the control unit 8.

By this signal, the control unit 8 gives commands to the uninterruptible power supply unit 7 for switching to 48 V and the block of switches 6 for supplying 48 V to the corresponding contacts of the relay of the starter-generator 5. From there, through the relay-regulator 4, the voltage is supplied to the starter-generator 3 , and the engine starts.

At the same time, by this command, the block of switches 6 disconnects the power supply circuits of the batteries 2 and consumers 1 and includes a voltage-reducing device in the power circuit of the latter. Due to this, the voltage 1 continues to be applied to consumers 1.

After starting the relay, the starter-generator 5 switches the batteries 2 from 48 V to 24 V and, at the same time, gives a signal about this to the control unit 8. Further, the operation of the system depends on whether the engine was started or not.

If the engine starts, the starter-generator 3 starts to work in the generator mode, the voltage from the starter-generator 3 starts to flow into the relay-regulator 4. The relay-regulator 4 sends a corresponding signal to the control unit 8, which, in turn, gives commands to an uninterruptible power supply unit 7 and a block of switches 6 about switching to the on mode provided for a running engine. If none of the modes is enabled, the system works similarly to the prototype.

If the engine does not start, the signal about the start of the starter-generator 3 in the generator mode from the relay-regulator 4 to the control unit 8 is not received. In this case, the control unit 8 sends commands to the uninterruptible power supply unit 7 to resume the supply of voltage of 27 V and, at the same time, to the block of switches 6 on switching the circuits to the initial state to provide consumers 1 with electricity and recharge the batteries 2.

Permanent operation mode: when this mode is turned on, the system already functions similarly to the prototype.

The control unit 8 supplies a signal to the block of switches 6 to supply power to the uninterruptible power supply unit 7 to start it (if this was not preceded by an autonomous operation mode and the uninterruptible power supply unit 7 was not started).

As soon as the uninterruptible power supply unit 7 is started, the corresponding signal comes from it to the control unit 8. Until the control unit 8 receives this signal, the uninterruptible power supply unit 7 will not be connected to power consumers 1.

After starting the uninterruptible power supply unit 7, the system is in standby mode until a signal from the switch unit 6 arrives at the control unit 8 that a current began to flow through the circuit to consumers 1, which should be powered from the uninterruptible power supply unit 7.

According to this signal, the control unit 8 sends a command to the block of switches 6 to switch this circuit from the power supply from the starter-generator 3 (batteries 2) to the uninterruptible power supply unit 7.

When the circuit is opened, the block of switches 6 automatically switches it to power from the starter-generator 3 (batteries 2). At the same time, the uninterruptible power supply unit 7 does not turn off, but continues to work in idle mode.

In the future, the system works in a similar way until the mode is changed or turned off.

Follow-up mode: when you turn on this mode, the system already functions similarly to the prototype.

After turning on this mode, the control unit 8 gives a command to start the uninterruptible power supply unit 7 only after it receives a signal from the switch unit 6 that a current has begun to flow through the circuit to be powered from the uninterruptible power supply unit 7.

The startup order of the uninterruptible power supply unit 7 is similar to the continuous operation mode.

As soon as the uninterruptible power supply unit 7 is started, the corresponding signal from it goes to the control unit 8 (until the control unit 8 receives this signal - the uninterruptible power supply unit 7 will not be connected to power consumers 1). After that, the control unit 8 sends a command to the block of switches 6 to switch the corresponding circuit from the power supply from the starter-generator 3 (batteries 2) to the uninterruptible power supply unit 7.

When the circuit is opened, the block of switches 6 automatically switches it to power from the starter-generator 3 (batteries 2). If from the switch unit 6 to the control unit 8 there is no signal about the flow of current through at least one circuit that must be powered from the uninterruptible power supply unit 7, then the control unit 8 supplies a signal to the uninterruptible power supply unit 7 to turn it off.

In the future, the system works in a similar way until the mode is changed or turned off.

Standby source mode: when this mode is turned on, the system is already functioning similarly to the prototype or in continuous operation mode (tracking mode).

In this mode, when a signal arrives at the control unit 8 from the relay regulator 4 to reduce the voltage to a level at which the starter-generator 3 is turned off, and the consumers 1 are supplied with batteries 2, the control unit 8 gives a command to switch the uninterruptible power supply unit 7 to output voltage 24 V.

At the same time, the control unit 8 sends a command to the switch unit 6 to connect the uninterruptible power supply unit 7 to power all consumers 1 and recharge the batteries 2 (backup source mode is on).

Switching from the backup source mode to the continuous operation mode (tracking mode or) occurs after the control unit 8 receives a signal from the relay controller 4 that the voltage of the starter-generator 3 has exceeded the voltage of the batteries 2. Then the control unit 8 gives a command to switch the uninterruptible power supply unit 7 to generate a voltage of 27 V.

At the same time, the control unit 8 sends a command to the block of switches 6 to switch all the circuits, in accordance with the settings of the control elements and the consumers 1 (the backup source mode is off).

In the future, the system works in a similar way until the mode is changed or turned off. When the backup source mode is turned off, the system starts to work in accordance with the main enabled mode.

The automatic transition from continuous operation (tracking mode or backup source mode) to standalone mode occurs upon a signal from control unit 8, after it receives a signal from tachometer 9, indicating a decrease in engine speed to 0 rpm.

The use of an uninterruptible power supply unit as part of the power supply system will improve the operating conditions of electricity consumers, increase the period of their trouble-free operation and, accordingly, increase the efficiency of the use of the armament model itself.

The ability to use this system with the main engine idle allows you to reduce fuel consumption, save a resource and increase the life of the power plant until the next service or repair.

Another advantage of the proposed system is the ability to use a sample of weapons with a faulty generator, which increases the reliability of the combat vehicle.

The proposed power supply system with an uninterruptible power supply unit is made from the element base used in systems of objects of armored vehicles.

Thus, the proposed power supply system with an uninterruptible power supply has the following advantages compared to the prototype: it provides power to consumers of the object with electricity of the required quality in all conditions of the application of the object, thereby increasing the service life of elements and systems of the combat vehicle, increasing their reliability and efficiency and, as a result, the combat effectiveness of the weapon model is increased.

Literature

1. Product 188A1. Technical description. 188A TO. Part 1. Prototype. 153 p. Open edition.

Claims (1)

A power supply system with an uninterruptible power supply unit, comprising a starter-generator, a relay-regulator, batteries, characterized in that it includes an uninterruptible power supply unit, a control unit and a switch block, the outputs of which have direct electrical connection with consumers of electric energy, a relay starter-generator, uninterruptible power supply unit and control unit, and feedback from the relay of the starter-generator, relay-regulator, control unit and unit without uninterruptible power supply, which, in turn, has direct and reverse electrical connection with the control unit, which has electrical feedback with a tachometer, relay of the starter-generator and relay-regulator, the outputs of which have reverse electrical connections with the starter-generator and relay of the starter-generator having, in turn, a direct electrical connection with the batteries and the starter-generator and a reverse electrical connection with the batteries.

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