Abstract: A hybrid compensation system is electrically connected between a power grid and a load. The hybrid compensation system includes an active filter, a passive filter and a control unit. The active filter generates an output current. The active filter includes a switching circuit, a DC bus capacitor and a filtering inductor. The control unit includes a voltage controller, a first reactive current detector, a harmonic current compensator, a current loop controller and a modulator. The voltage controller generates a first current given signal according to a bus voltage of the DC bus capacitor and a reference voltage. The first reactive current detector generates a second current given signal. The harmonic current compensator generates a third current given signal. The current loop controller generates a control signal. The modulator generates a driving signal according to the control signal.

Abstract: A computer implemented method for illumination planning is provided that includes providing a floorplan having at least one lighting space; and assigning functions to the at least one lighting space. The lighting space and functions assigned to the lighting space of the floorplan are matched to a historical lighting schema. A lighting layout is extracted from the historical lighting schema and matched to the lighting space. A light package is extracted from the historical lighting schema and matched to the lighting space. A calculation of lighting performance for the lighting layout and the light package that has been matched to the lighting space is conducted to determine whether the lighting performance meets a lighting standard or whether the lighting performance does not meet the lighting standard. The computer implemented method further includes producing a conclusion for the lighting scenario for suitability to the floorplan and functions.

Abstract: A shower head including first and second coupling elements. One of the coupling elements is a male coupling element and the other coupling element is a female coupling element. The male coupling element is inserted into the female coupling element, and when attached, the male coupling element is overlapped by the female coupling element.

Abstract: The present invention provides a reagent mixing device, which comprises a driving device, a transport device and a rotating part, wherein the transport device comprises a conveying mechanism for conveying a reagent kit and a mixing mechanism for mixing a reagent; the conveying mechanism is driven by the driving device to move relative to the mixing mechanism; the rotating part and mixing mechanism are in transmission matching; the conveying mechanism and the mixing mechanism are sleeved with each other to form a bearing structure. The present invention further provides a reagent mixing method. The reagent mixing device is small in size, smart in structure, easy to assemble and low in manufacturing cost. The reagent mixing method provided by the present invention is simple and reliable, high in overall operation reliability, and has very high application values in such analysis and test fields as full-automatic chemiluminescence immunoassay analyzers and biochemical analyzers.

Abstract: A control method of a multilevel converter includes: classifying power modules that start working, need to update an output state or stop working to form m power module groups; and controlling power modules in a same one of the power module groups to start working, update the output state or stop working at the same time, and sequentially controlling the m power module groups to start working, or update the output state or stop working, according to a preset time interval. The number of power modules in each power module group is less than or equal to a preset value, causing a change value of an output level of the each power module group to be less than or equal to a preset voltage value.

Abstract: A computer implemented method for illumination planning is provided that includes providing a floorplan having at least one lighting space; and assigning functions to the at least one lighting space. The lighting space and functions assigned to the lighting space of the floorplan are matched to a historical lighting schema. A lighting layout is extracted from the historical lighting schema and matched to the lighting space. A light package is extracted from the historical lighting schema and matched to the lighting space. A calculation of lighting performance for the lighting layout and the light package that has been matched to the lighting space is conducted to determine whether the lighting performance meets a lighting standard or whether the lighting performance does not meet the lighting standard. The computer implemented method further includes producing a conclusion for the lighting scenario for suitability to the floorplan and functions.

Abstract: A control method of a multilevel converter includes: classifying power modules that start working, need to update an output state or stop working to form m power module groups; and controlling power modules in a same one of the power module groups to start working, update the output state or stop working at the same time, and sequentially controlling the m power module groups to start working, or update the output state or stop working, according to a preset time interval. The number of power modules in each power module group is less than or equal to a preset value, causing a change value of an output level of the each power module group to be less than or equal to a preset voltage value.

Abstract: The present invention provides a reagent mixing device, which comprises a driving device, a transport device and a rotating part, wherein the transport device comprises a conveying mechanism for conveying a reagent kit and a mixing mechanism for mixing a reagent; the conveying mechanism is driven by the driving device to move relative to the mixing mechanism; the rotating part and mixing mechanism are in transmission matching; the conveying mechanism and the mixing mechanism are sleeved with each other to form a bearing structure. The present invention further provides a reagent mixing method. The reagent mixing device is small in size, smart in structure, easy to assemble and low in manufacturing cost. The reagent mixing method provided by the present invention is simple and reliable, high in overall operation reliability, and has very high application values in such analysis and test fields as full-automatic chemiluminescence immunoassay analyzers and biochemical analyzers.

Abstract: The present invention provides a reagent mixing device, which comprises a driving device, a transport device and a rotating part, wherein the transport device comprises a conveying mechanism for conveying a reagent kit and a mixing mechanism for mixing a reagent; the conveying mechanism is driven by the driving device to move relative to the mixing mechanism; the rotating part and mixing mechanism are in transmission matching; the conveying mechanism and the mixing mechanism are sleeved with each other to form a bearing structure. The present invention further provides a reagent mixing method. The reagent mixing device is small in size, smart in structure, easy to assemble and low in manufacturing cost. The reagent mixing method provided by the present invention is simple and reliable, high in overall operation reliability, and has very high application values in such analysis and test fields as full-automatic chemiluminescence immunoassay analyzers and biochemical analyzers.

Abstract: A driving method for power semiconductor switches in an H-bridge circuit is provided. The method includes: calculating a start time and an end time of a zero level of an output voltage and determining a zero level section based on the start time and end time of the zero level; and driving an upper power semiconductor switch of a first bridge arm and an upper power semiconductor switch of a second bridge arm to be on simultaneously or driving a lower power semiconductor switch of the first bridge arm and a lower power semiconductor switch of the second bridge arm to be on simultaneously in the zero level section.

Abstract: A topology of composite cascaded high-voltage and low-voltage modules is provided. It includes at least one high-voltage module, at least one low-voltage module, at least one local control circuit and at least one DC-to-DC module. At least one high-voltage module is connected with at least one low-voltage module in cascade manner. At least one local control circuit outputs at least one signal to at least one high-voltage driving circuit and at least one low-voltage driving circuit. An input of at least one DC-to-DC module is connected with two ends of a low-voltage bus capacitor, for receiving a low-voltage DC bus voltage and converting the low-voltage DC bus voltage into a DC output voltage, so as to provide one or more of at least one high-voltage driving circuit, at least one low-voltage driving circuit and at least one local control circuit with a power supply.

Abstract: A hybrid topology power converter includes a three-level circuit module and a cascaded H-bridge circuit module. A control method includes the following steps. Firstly, a zero sequence component is injected into a total modulation wave, thereby generating a compensated total modulation wave. Then, a first voltage signal is generated according to the compensated total modulation wave. An H-bridge modulation wave is generated according to the compensated total modulation wave and the first voltage signal. A three-level driving signal is generated according to the first voltage signal, and an H-bridge driving signal is generated according to the H-bridge modulation wave. A duty cycle of at least one switch element of the three-level circuit module is adjusted according to the three-level driving signal. A duty cycle of at least one switch elements of the cascaded H-bridge circuit module is adjusted according to the H-bridge driving signal.

Abstract: The present invention provides a reagent mixing device, which comprises a driving device, a transport device and a rotating part, wherein the transport device comprises a conveying mechanism for conveying a reagent kit and a mixing mechanism for mixing a reagent; the conveying mechanism is driven by the driving device to move relative to the mixing mechanism; the rotating part and mixing mechanism are in transmission matching; the conveying mechanism and the mixing mechanism are sleeved with each other to form a bearing structure. The present invention further provides a reagent mixing method. The reagent mixing device is small in size, smart in structure, easy to assemble and low in manufacturing cost. The reagent mixing method provided by the present invention is simple and reliable, high in overall operation reliability, and has very high application values in such analysis and test fields as full-automatic chemiluminescence immunoassay analyzers and biochemical analyzers.

Abstract: A topology of composite cascaded high-voltage and low-voltage modules is provided. It includes at least one high-voltage module, at least one low-voltage module, at least one local control circuit and at least one DC-to-DC module. At least one high-voltage module is connected with at least one low-voltage module in cascade manner. At least one local control circuit outputs at least one signal to at least one high-voltage driving circuit and at least one low-voltage driving circuit. An input of at least one DC-to-DC module is connected with two ends of a low-voltage bus capacitor, for receiving a low-voltage DC bus voltage and converting the low-voltage DC bus voltage into a DC output voltage, so as to provide one or more of at least one high-voltage driving circuit, at least one low-voltage driving circuit and at least one local control circuit with a power supply.

Abstract: A driving method for power semiconductor switches in an H-bridge circuit is provided. The method includes: calculating a start time and an end time of a zero level of an output voltage and determining a zero level section based on the start time and end time of the zero level; and driving an upper power semiconductor switch of a first bridge arm and an upper power semiconductor switch of a second bridge arm to be on simultaneously or driving a lower power semiconductor switch of the first bridge arm and a lower power semiconductor switch of the second bridge arm to be on simultaneously in the zero level section.

Abstract: A pre-charge control method for a hybrid multilevel power converter comprises steps of: (a) controlling access of the current-limiting resistor unit, limiting current from the AC power via the current-limiting resistor unit, and outputting the current; (b) controlling the second capacitor unit to bypass, and charging the first capacitor unit; (c) controlling the access of the second capacitor unit when the first capacitor unit is charged to a third preset voltage, and charging the first and second capacitor units at the same time; (d) controlling the first capacitor unit to bypass when the second capacitor unit is charged to a fourth preset voltage, or the first capacitor unit is charged to a first preset voltage, and charging the second capacitor unit; and (e) controlling the access of the first capacitor units and the current-limiting resistor unit to bypass when the second capacitor unit is charged to a second preset voltage.

Abstract: A hybrid topology power converter includes a three-level circuit module and a cascaded H-bridge circuit module. A control method includes the following steps. Firstly, a zero sequence component is injected into a total modulation wave, thereby generating a compensated total modulation wave. Then, a first voltage signal is generated according to the compensated total modulation wave. An H-bridge modulation wave is generated according to the compensated total modulation wave and the first voltage signal. A three-level driving signal is generated according to the first voltage signal, and an H-bridge driving signal is generated according to the H-bridge modulation wave. A duty cycle of at least one switch element of the three-level circuit module is adjusted according to the three-level driving signal. A duty cycle of at least one switch elements of the cascaded H-bridge circuit module is adjusted according to the H-bridge driving signal.

Abstract: A pre-charge control method for a hybrid multilevel power converter comprises steps of: (a) controlling access of the current-limiting resistor unit, limiting current from the AC power via the current-limiting resistor unit, and outputting the current; (b) controlling the second capacitor unit to bypass, and charging the first capacitor unit; (c) controlling the access of the second capacitor unit when the first capacitor unit is charged to a third preset voltage, and charging the first and second capacitor units at the same time; (d) controlling the first capacitor unit to bypass when the second capacitor unit is charged to a fourth preset voltage, or the first capacitor unit is charged to a first preset voltage, and charging the second capacitor unit; and (e) controlling the access of the first capacitor units and the current-limiting resistor unit to bypass when the second capacitor unit is charged to a second preset voltage.

Abstract: Provided is a doubly-fed induction generator system and a self-test method for the active crowbar circuit of the doubly-fed induction generator system. The invention is featured by using the controller of the doubly-fed induction generator system to carry out a self-test procedure to detect the loop current of the active crowbar circuit for determining if the active crowbar circuit can be turned on and off normally. Also, the rotor-side converter and the active crowbar circuit of the doubly-fed induction generator system are forbidden to turn on simultaneously during the execution of the self-test procedure.

Abstract: Provided is a doubly-fed induction generator system and a self-test method for the active crowbar circuit of the doubly-fed induction generator system. The invention is featured by using the controller of the doubly-fed induction generator system to carry out a self-test procedure to detect the loop current of the active crowbar circuit for determining if the active crowbar circuit can be turned on and off normally. Also, the rotor-side converter and the active crowbar circuit of the doubly-fed induction generator system are forbidden to turn on simultaneously during the execution of the self-test procedure.