Power supply system of server
阅读说明：本技术 一种服务器的电源系统 (Power supply system of server ) 是由 刘尚迪 于 2019-09-12 设计创作，主要内容包括：本发明公开了一种服务器的电源系统,包括三相电力传输装置以及谐振电路；三相电力传输装置包括三个芯柱,谐振电路包括三个初级侧绕组以及三个次级侧绕组,并且三个芯柱中的每一个芯柱上均缠绕着一个初级侧绕组以及一个次级侧绕组；每一个初级侧绕组接入一相的输入电流,并且各个次级侧绕组均连接至负载；其中,在一个芯柱上缠绕的初级侧绕组以及次级侧绕组包括电感器和至少一个电容器。上述电源系统的谐振电路可以使电路始终呈电阻性,因此使得传输电力的效率最高。(The invention discloses a power supply system of a server, which comprises a three-phase power transmission device and a resonant circuit, wherein the three-phase power transmission device comprises a power supply unit, a power supply unit and a power supply unit; the three-phase power transmission device comprises three core columns, the resonant circuit comprises three primary side windings and three secondary side windings, and one primary side winding and one secondary side winding are wound on each of the three core columns; each primary side winding is connected with an input current of one phase, and each secondary side winding is connected to a load; wherein the primary side winding and the secondary side winding wound on one of the legs include an inductor and at least one capacitor. The resonant circuit of the power supply system can make the circuit always have resistance, so that the efficiency of transmitting power is highest.)
1. A power supply system of a server, characterized by comprising a three-phase power transmission device and a resonance circuit;
the three-phase power transmission device comprises three core columns, the resonance circuit comprises three primary side windings and three secondary side windings, and each of the three core columns is wound with one primary side winding and one secondary side winding; each primary side winding is connected with an input current of one phase, and each secondary side winding is connected to a load; wherein the primary side winding and the secondary side winding wound on one of the legs include an inductor and at least one capacitor.
2. The power supply system of the server according to claim 1, wherein the three-phase power transmission device further includes an upper yoke of a Y-shape, a lower yoke of a Y-shape that is aligned with the upper yoke; one of the three legs is connected between an end of each phase of the upper yoke and an end of each corresponding phase of the lower yoke.
3. The power supply system for a server according to claim 1, further comprising a primary-side control circuit and a power factor correction circuit;
the power factor correction circuit is used for connecting three-phase input current; the primary side control circuit is used for controlling the power factor correction circuit so as to control the time sequence of the three-phase input current.
4. The power supply system of the server according to claim 3, wherein the power supply system of the server further comprises a bridge rectifier circuit for receiving an AC input current and outputting a DC output current.
5. The power supply system of the server according to claim 1, wherein a ratio of a number of turns of the primary side winding to a number of turns of the secondary side winding on each of the three core legs is related to a magnitude of current switched in by the winding of each of the three core legs.
6. The power supply system of the server according to claim 5, wherein a ratio of a number of turns of the primary side winding to a number of turns of the secondary side winding on each of the three core legs is the same.
7. The power supply system of the server according to claim 1, wherein the primary side circuit of the resonance circuit includes a first capacitor and a first inductor connected in series therewith; the secondary side circuit of the resonant circuit includes a second inductor that is mutually inductive with the first inductor and a second capacitor that is in parallel with the second inductor.
8. The power supply system for a server according to claim 2, wherein the phases of the upper yoke differ by 120 ° and the phases of the lower yoke differ by 120 °.
9. The power supply system of the server according to claim 4, further comprising three high voltage half-bridge driver chips and three sets of switches;
each group of switches comprises two switches with opposite phases, the input ends of the two switches with opposite phases are connected to the output end of the bridge rectifier circuit, and the output ends of the two switches with opposite phases are connected to the input end of the resonant circuit; each high-voltage half-bridge driving chip controls the opening and closing of two switches in a group of switches; the input ends of the three high-voltage half-bridge driving chips receive three-phase driving current.
Technical Field
The invention relates to the technical field of power supplies, in particular to a power supply system of a server.
Background
A server is a device that provides computing services. Generally, the scenario of using the server is often a scenario with a relatively high demand on computing power, such as a bank, a power station, and the like. In order to stably achieve the use effect of the server, it is necessary for the power supply system of the server to be able to stably supply circuits to each component in the server. At present, a power transmission stage in a power supply system of a server is single-phase, and the traditional architecture of the power transmission stage is that an input is rectified by mains supply and then enters a Power Factor Correction (PFC) circuit to obtain direct current, then the direct current is transmitted to a secondary side through a single-phase DC-DC converter, and the power is rectified and filtered to obtain a required output for a load to use. Since the power supplied by the single-phase system is not stable, it is disadvantageous for the operation of the server.
Disclosure of Invention
In order to solve the above technical problem, the present application provides a power supply system of a server, which is capable of efficiently and stably supplying power to the server.
In order to achieve the object of the present application, an embodiment of the present invention provides a power supply system for a server, including a three-phase power transmission device and a resonant circuit;
the three-phase power transmission device comprises three core columns, the resonant circuit comprises three primary side windings and three secondary side windings, and one primary side winding and one secondary side winding are wound on each of the three core columns; each primary side winding is connected with an input current of one phase, and each secondary side winding is connected to a load; wherein the primary side winding and the secondary side winding wound on one of the legs include an inductor and at least one capacitor.
In an alternative embodiment, the three-phase power transmission device further includes an upper yoke of a Y-shape, a lower yoke of a Y-shape aligned with the upper yoke; one of the three legs is connected between an end of each phase of the upper yoke and an end of each corresponding phase of the lower yoke.
In an optional embodiment, the power supply system of the server further comprises a primary side control circuit and a power factor correction circuit;
the power factor correction circuit is used for connecting three-phase input current; the primary side control circuit is used for controlling the power factor correction circuit so as to control the time sequence of the three-phase input current.
In an optional embodiment, the power supply system of the server further comprises a bridge rectifier circuit for receiving the ac input current and outputting the dc output current.
In an alternative embodiment, the ratio of the number of turns of the primary side winding to the number of turns of the secondary side winding on each of the three legs is related to the magnitude of the current switched in by the winding of each of the three legs.
In an alternative embodiment, the ratio of the number of turns of the primary side winding to the number of turns of the secondary side winding on each of the three legs is the same.
In an alternative embodiment, the primary side circuit of the resonant circuit comprises a first capacitor and a first inductor in series therewith; the secondary side circuit of the resonant circuit includes a second inductor that is mutually inductive with the first inductor and a second capacitor that is in parallel with the second inductor.
In an alternative embodiment, the phases of the upper yoke differ by 120 ° and the phases of the lower yoke differ by 120 °.
In an optional embodiment, the high-voltage half-bridge driving circuit further comprises three high-voltage half-bridge driving chips and three groups of switches;
each group of switches comprises two switches with opposite phases, the input ends of the two switches with opposite phases are connected to the output end of the bridge rectifier circuit, and the output ends of the two switches with opposite phases are connected to the input end of the resonance circuit; each high-voltage half-bridge driving chip controls the opening and closing of two switches in a group of switches; the input ends of the three high-voltage half-bridge driving chips receive three-phase driving current.
In the embodiment of the invention, the inductor and the capacitor which are wound on one core column are used for repeatedly adjusting the power transmitted by the primary side winding and the secondary side winding which are wound on the core column, the power is filtered, and the circuit part consisting of the inductor and the capacitor is always resistive, so that the power transmission efficiency is highest. When the power supplied by the three-phase power source is transmitted by using the inductor and the capacitor provided on the primary side winding and the secondary side winding, noise and unnecessary frequency components can be filtered out by using the inductor and the capacitor, and the power transmission efficiency can be kept high by using the capacitor and the inductor. Therefore, the power supply system of the server provided by the embodiment of the invention can efficiently and stably supply power to other components of the server, thereby driving the server to operate stably.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a block diagram of a power supply system of a server according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a power supply system of a server according to an alternative embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
A server is a device that provides computing services. Generally, the scenario of using the server is often a scenario with a relatively high demand on computing power, such as a bank, a power station, and the like. In order to stably achieve the use effect of the server, it is necessary for the power supply system of the server to be able to stably supply circuits to each component in the server. At present, a power transmission stage in a power supply system of a server is single-phase, and the traditional architecture of the power transmission stage is that an input is rectified by mains supply and then enters a Power Factor Correction (PFC) circuit to obtain direct current, then the direct current is transmitted to a secondary side through a single-phase DC-DC converter, and the power is rectified and filtered to obtain a required output for a load to use. Since the power supplied by the single-phase system is not stable, it is disadvantageous for the operation of the server.
In order to solve the above technical problem, an embodiment of the present invention provides a power supply system of a server, which includes a three-phase power transmission apparatus 100 and a
Wherein the three-phase power transmission device 100 comprises three core columns, the
The advantage of arranging the three-phase power transmission device 100 in this way is that the power supply system of the server provided by the embodiment of the present invention can introduce three-phase power by arranging the three-phase power transmission device 100, by winding the windings of the three-phase power on the three legs, respectively; because the three-phase power supply has different phases, the phases of wave crests/wave troughs of the power provided between the phases and the time of the occurrence of the wave crests/wave troughs are different, so that the power provided by the three-phase power supply is comprehensively utilized, the wave crests and the wave troughs existing in the power provided by the single-phase power supply can be translated, the power supply of a power supply system of the server can be more stable, and the stability of the server in operation is improved. Since the primary side winding and the secondary side winding wound on one core leg include at least one inductor and at least one capacitor, the power transmitted by the primary side winding and the secondary side winding wound on the core leg can be repeatedly adjusted by the inductor and the capacitor wound on the core leg, the power is filtered, and a circuit portion formed by the inductor and the capacitor is always resistive, and the efficiency of transmitting the power is highest. Therefore, when the power supplied from the three-phase power source is transmitted by using the inductor and the capacitor provided in the primary side winding and the secondary side winding, noise and unnecessary frequency components can be filtered out by using the inductor and the capacitor, and the power transmission efficiency can be kept high at all times by using the capacitor and the inductor. Therefore, the power supply system of the server provided by the embodiment of the invention can efficiently and stably supply power to other components of the server, thereby driving the server to operate stably.
In an alternative embodiment, the three-phase power transmission device 100 further includes an upper yoke of a Y-shape, a lower yoke of a Y-shape aligned with the upper yoke; one of the three legs is connected between an end of each phase of the upper yoke and an end of each corresponding phase of the lower yoke.
The three-phase power transmission device 100 includes an upper yoke of a Y-shape, that is, the upper yoke has branches extending from a central portion in three directions, respectively, for a total of three branches (also referred to as "three phases" herein); the three-phase power transmission device 100 further includes a Y-shaped lower yoke that is aligned with the upper yoke, is the same in shape and size as the upper yoke, and is parallel to the upper yoke, and is aligned with the lower yoke such that the limbs connected between the end of each phase of the upper yoke and the end of each corresponding phase of the lower yoke are perpendicular to the upper yoke and perpendicular to the lower yoke, for a total of three such limbs. Further, one central leg is provided between the branches of the three phases at the center of the upper yoke and the branches of the three phases at the center of the lower yoke, but this central leg is not wound with a winding only for forming a complete magnetic circuit with the legs between the ends of the three phases of the upper and lower yokes and the phases of the upper and lower yokes to which it is connected when power is applied, so that the three-phase power transmission device 100 can transmit power with high efficiency.
The advantage of arranging the three-phase power transmission device 100 in this way is that the power supply system of the server provided by the embodiment of the present invention can introduce three-phase power by arranging the three-phase power transmission device 100, by winding the windings of the three-phase power on the three legs, respectively; because the three-phase power supply has different phases, the phases of wave crests/wave troughs of the power provided between the phases and the time of the occurrence of the wave crests/wave troughs are different, so that the power provided by the three-phase power supply is comprehensively utilized, the wave crests and the wave troughs existing in the power provided by the single-phase power supply can be translated, the power supply of a power supply system of the server can be more stable, and the stability of the server in operation is improved.
There is now a three-phase power transmission device of the EE type, which also has three legs, wound with three sets of windings (each set of windings comprising a primary side winding and a secondary side winding), but in the same plane, i.e. one leg at the side and the leg in the middle and the upper and lower yoke parts between them are grouped into a complete magnetic circuit; the other leg on the opposite side is grouped with the leg in the middle and the upper and lower yoke sections in between into a complete magnetic circuit. However, in the EE type three-phase power transmission device, the magnetic flux of the center leg is high, the magnetic flux of the upper and lower yokes is lower than that of the center leg, and the magnetic flux of the legs on both sides is lower than that of the upper and lower yokes. Therefore, the magnetic flux of the center leg is greatly different from the magnetic fluxes of the legs on both sides, which causes a significant difference in the efficiency of three-phase power transmission when power is transmitted through the windings wound on the legs. When the Y-shaped upper yoke and the Y-shaped lower yoke are used, the core leg between the end portions of the upper and lower yokes of each phase and the other core legs between the end portions of the upper and lower yokes of each phase do not constitute a closed magnetic circuit, and therefore the magnetic fluxes of the three core legs at the end portions have little mutual influence, and therefore, when electric power is transmitted by the windings wound around the core legs, the efficiency of three-phase power transmission approaches. This is advantageous for the server to keep the power stable while it is handling power.
In an alternative embodiment, the power supply system of the server further includes a primary side control circuit 300 and a power factor correction circuit 400;
the primary side control circuit 300 is used for controlling the timing of the three-phase input current and controlling the power factor correction circuit;
the power factor correction circuit 400 is used to switch in three-phase input current.
The primary side control circuit 300 may be a Digital Signal Processing (DSP) Unit or a Micro Controller Unit (MCU), and outputs a PWM Signal to control the power factor correction circuit and adjust the timing of the input current.
In an alternative embodiment, as shown in fig. 2, the power supply system of the server further includes a
In an alternative embodiment, the ratio of the number of turns of the primary side winding to the number of turns of the secondary side winding on each of the three legs is related to the magnitude of the current switched in by the winding of each of the three legs.
In order to keep the power transmitted by the windings wound on the legs balanced, the ratio of the number of turns of the primary side winding to the number of turns of the secondary side winding on each of the three legs is such that the ratio of the number of turns is related to the magnitude of the input current, thereby keeping the three-phase power balance.
In an alternative embodiment, the ratio of the number of turns of the primary side winding to the number of turns of the secondary side winding on each of the three legs is the same.
In an alternative embodiment, as shown in fig. 2, the primary side circuit of the
In an alternative embodiment, the phases of the upper yoke differ by 120 ° and the phases of the lower yoke differ by 120 °.
Thus, the magnetic flux of each core column can be kept the same when the magnitude of the input current of each phase is the same.
In an alternative embodiment, as shown in fig. 2, the power system of the server further includes three high-voltage half-bridge driver chips and three sets of switches;
each group of switches comprises two switches with opposite phases, the input ends of the two switches with opposite phases are connected to the output end of the bridge rectifier circuit, and the output ends of the two switches with opposite phases are connected to the input end of the resonance circuit; each high-voltage half-bridge driving chip controls the opening and closing of two switches in a group of switches; the input ends of the three high-voltage half-bridge driving chips receive three-phase driving current.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
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