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Matches 351 - 400 out of 47,659

Document Document Title
WO/2019/128037A1
A photovoltaic power plant and a secondary frequency modulation control method therefor The photovoltaic power plant comprises a photovoltaic power station and an active power control system, wherein the photovoltaic power station compri...  
WO/2019/128038A1
Disclosed are a subsynchronous oscillation suppression method and apparatus, and a controller for a converter, used for controlling a converter. The method comprises: acquiring the magnitude of power fluctuation generated by subsynchrono...  
WO/2019/128036A1
Disclosed are a photovoltaic power plant and a primary frequency modulation control method therefor. The photovoltaic power plant comprises a photovoltaic power plant and an active power control system, wherein the photovoltaic power pla...  
WO/2019/128335A1
A distribution network topology error identification algorithm, comprising: calculating the voltage of a coupling node to which each load belongs, and obtaining a coupling node voltage sample space to which the loads belong; calculating ...  
WO/2019/130540A1
Provided is a system that contributes to realizing low-cost power generation. A system according to the present invention includes a plurality of mining units and a control device. Each of the plurality of mining units executes a task fo...  
WO/2019/129543A1
The invention relates to energy supply systems and electrical outlets. In particular, the invention relates to energy supply systems comprising an electrical power source connected to an inverter device for forming a local power grid.The...  
WO/2019/132435A1
The present invention relates to a method for controlling the output level of an MMC converter for reducing a system frequency change, the method being capable of adjusting the output level of an MMC converter in response to a system fre...  
WO/2019/130126A1
Identifying a fault location in a power transmission line (402) includes obtaining synchronized disturbance records from each of the terminals after a fault has occurred in the power transmission line (402). Pre-fault voltage and current...  
WO/2019/131227A1
A recognition unit 224 recognizes whether power is in a reverse flow state from a customer 16 to a power system 30 or in a forward flow state from the power system 30 to the customer 16. If the recognition unit 224 has recognized the rev...  
WO/2019/129864A1
The present invention provides a nanogrid and a virtual in- verter controller (VIC) (100, 200, 300) for the nanogrid (1), wherein said nanogrid (1) comprises at least one parallel branch (10, 20, 30, 40), and at least one branch of said ...  
WO/2019/120402A1
The present invention relates to a method for simultaneous operation of a plurality of chopper circuits of a wind turbine power converter, the method comprising the steps of operating a controllable switching member of a first chopper ci...  
WO/2019/120589A1
A charging system (100) comprising converter switches (1, 2) for electrically coupling to a first electrical energy storage device (60), a filter circuit (40) comprising a series inductor (45) and a parallel capacitor (48), a coupling de...  
WO/2019/120397A1
A method (200) for operating a renewable energy power plant comprising a plurality of renewable energy generators. The method comprises: identifying (202) a predetermined condition of the renewable energy power plant, of the grid, or of ...  
WO/2019/120399A1
The invention relates to a method for regulating a power ramp rate of a wind park at a point of common coupling (PCC) between the wind park and a utility grid, wherein the wind farm comprises a plurality of wind turbines each having a po...  
WO/2019/124678A1
A power supply system according to an embodiment comprises: a power generation device for generating electric energy; an inverter for inverting the electric energy into an alternating current; an energy storage system for receiving the e...  
WO/2019/125723A1
A system includes multiple hybrid energy storage modules (HESMs) (114a-114d, 206-210, 402-406, 1614-1616, 1642-1644) configured to accept constant-current DC input power from a main power source (106, 202, 302, 401, 602, 1602). Each HESM...  
WO/2019/123529A1
According to an embodiment of the present invention, a storage battery system is provided which has: a plurality of pairs each including a storage battery and an electric power conversion device that is connected to the storage battery a...  
WO/2019/122481A1
The present invention discloses a converter with cold start-up and a cold start-up method for modular power converters that allows converter operation tests to be carried out without a connection to the AC grid. For that purpose, the con...  
WO/2019/120719A1
The invention relates to a method for operating a battery storage system (1) comprising at least one series-connected string (3, 4, 5), in which at least one first storage module (6, 6', 6") and a second storage module (7, 7', 7"), which...  
WO/2019/120625A1
A system for an electrical power distribution network (105) receives electricity from one or more distributed energy resources (104). The system includes a voltage regulation device (110) configured to maintain a voltage in the electrica...  
WO/2019/120671A1
The invention relates to a charging station for electric vehicles, comprising a mains terminal equipped for connection to an electric grid, a charging connection equipped for connection to an electric vehicle, and a stored energy source ...  
WO/2019/124407A1
An electric power consuming device, wherein the switching noise of a switching element is reduced using a plurality of small resistors and a compact switching element. A control voltage generation unit 20A monotonously raises a first con...  
WO/2019/120396A1
A method of controlling a hybrid power plant connected to a power network, the hybrid power plant having a first renewable energy generator and a second renewable energy generator, the first renewable energy generator being configured to...  
WO/2019/120398A1
The invention relates to a method for damping harmonics of a power output of a power plant at a point of common coupling between the power plant and a utility grid, wherein the power plant comprises a plurality of energy production units...  
WO/2019/124479A1
Provided is an energy system provided with: a first mounting unit whereon transportable energy storage equipment that can store energy or an energy source is detachably mounted; a second mounting unit whereon transportable energy storage...  
WO/2019/126802A1
An electrical storage system comprises a first energy storage system and a second energy storage system having a lower electrical energy density and a higher rated electrical power output capability than the first energy storage system, ...  
WO/2019/120406A1
The invention relates to a method for operating a wind turbine which comprises a power generator, a generator side converter, a grid side converter, a DC link electrically connected to an output of the generator side converter and an inp...  
WO/2019/119667A1
Disclosed by the present application are a variable frequency transformer fault ride through circuit and a control method therefor, comprising: pre-processing collected grid voltage, stator interface voltage and rotor interface voltage t...  
WO/2019/120400A1
A method for controlling a renewable energy generator, the renewable energy generator being connected to a Point of Interconnection of an external power grid by a connecting network, wherein the connecting network has an associated imped...  
WO/2019/119017A1
An electrical power consumption control unit that controls power consumed by one or more electrical devices connected thereto including a computer processor having a memory operably connected thereto storing computer instruction code, th...  
WO/2019/119775A1
The present invention relates to the field of electric system security constrained economic dispatching, and provides a security constrained economic dispatching method for embedded reactive power and voltage. The method comprises: first...  
WO/2019/120404A1
A method for use in controlling a wind turbine generator (1) of a wind power plant based on a condition of a power converter or a component forming part of a power converter in the wind power plant. The method comprises determining the i...  
WO/2019/122768A1
A method for regulating a converter for autonomously stabilizing the frequency of a micro-network comprising a generating set, the method comprising: - determining (110) a power regulation variable (P*) on the basis of a power variation ...  
WO/2019/122233A1
The invention relates to a method for supporting the management of an electrical supply grid (304) or part thereof, comprising the following steps: capturing system states of the electrical supply grid (304) and/or system states influenc...  
WO/2019/119947A1
An islanding protection device for a distributed power supply and a detection algorithm thereof. The islanding protection device comprises a step-down transformer (1), a current-limiting reactor (2), a thyristor (3), and a controller uni...  
WO/2019/116960A1
A long-term prediction unit (23), using a long-term prediction model of power consumption by a user (1), predicts a temporal change in power consumption by the user (1) as long-term predicted power. A short-term prediction unit (25), usi...  
WO/2019/117071A1
A first group management system server 12a controls the fluctuation rate of power from a power storage system group, which comprises power storage systems installed in each of multiple customer households. From a host system server 10, a...  
WO/2019/118297A1
A sequential extraction control device for use in a 3-phase DC/AC converter. The 3-phase converter has three single-phase DC/AC converters, each controlled by a respective PWM extractor. Duty factor adjustments are made depending on a cu...  
WO/2019/115403A1
An inverter (10, 20, 30) for a photovoltaic system comprises - a substantially planar base plate (11) with a front face and a rear face, wherein the rear face forms an outer rear wall of the inverter (10, 20, 30), and with at least one p...  
WO/2019/118745A2
A digital low dropout (LDO) voltage regulator enabling on-chip fine-grain power management in multi-core microprocessor and system-on-a-chip platforms to increase system level energy efficiency. Its design synthesizability with automatic...  
WO/2019/114319A1
The present invention belongs to the technical field of energy, and particularly relates to an idle-time power-up method for an electric device and an idle-time energy supplementing method for an energy-consuming device. In order to real...  
WO/2019/117070A1
A first group management system server 12a controls the fluctuation rate of power from a power storage system group, which comprises power storage systems installed in each of multiple customer households. From a host system server 10, a...  
WO/2019/117957A1
A method, system, and device for controlling an energy storage device are provided. The method includes identifying a predetermined number of features based on forecasted data and data obtained from the energy storage device. The method ...  
WO/2019/116710A1
A first group management system server 12a controls a power storage system group including power storage systems that are installed at a plurality of respective consumers and that are connected to a power grid. An acquisition unit 440 ac...  
WO/2019/118101A1
Systems and methods for operating a power conversion system that includes a sole DC/DC converter are described. The systems and methods reduce a total number of DC/DC converters in a power system that includes an electric energy storage ...  
WO/2019/117198A1
An apparatus and method for estimating the economic feasibility of a storage battery uses a differential voltage between a pre-calculated discharge voltage and a charge upper-limit voltage to estimate an economic feasibility indicator as...  
WO/2019/116711A1
A second group management system server 12b controls a power storage system group including power storage systems that are respectively installed at a plurality of consumers and that are connected to a power grid. An acquisition unit 440...  
WO/2019/116419A1
This power conversion device is provided with a power conversion circuit and a control device. The control device is provided with a virtual power generation device modeling unit and a control signal generating unit. The virtual power ge...  
WO/2019/110411A1
The invention relates to a transformer device (124) for transforming a first alternating-voltage signal into a second alternating-voltage signal for feeding into an electrical supply grid (120), the transformer device comprising: a prima...  
WO/2019/109271A1
A VSC system (200) of a HVDC system and rectifier and inverter stations associated therewith are provided. The VSC system (200) of the HVDC system is upgraded from a LCC HVDC system (100) and includes a plurality of LCC transformers (110...  

Matches 351 - 400 out of 47,659