Crrc Qingdao Sifang Rolling Stock Research Institute Co., Ltd.

Qingdao Haier Drum Washing Machine Co., Ltd.

Haier Group Corporation

Lijun Zhang

Yonghong Xu

Xuqiang Zhao

Sheng Xu

Peishi Lv

Huacheng Song

Yuliang Jiang

Huacheng Zhang

Shujun Tian

Bo Li

Bo Zhang

Yang Zhou

Xiaoming Zhang

Zheng Xie

Yanfang Zhang

Bowei Zhu

Xiantao Chu

Haiyang Li

Long Li

Xianqi Lin

Shiying Sun

Maoqun Zhou

Zhuangzhuang Shen

Dongjun Yang

Junlei Wei

Zhaoping Li

The present application relates to a rectification control system, a charger and a control method for a charger. The rectification control system includes: a Vienna rectifier, which includes input terminals and output terminals, an output capacitor circuit, and a rectifying circuit which includes a u-phase bridge arm branch, a v-phase bridge arm branch and a w-phase bridge arm branch, each bridge arm branch comprising a switch device and a bidirectional switch unit which are connected in series; a voltage acquisition unit, which is connected to the three input terminals and is configured to acquire voltages U, Uand U; a fault detection unit, which is connected to the bidirectional switch units and is configured to detect whether any of the bidirectional switch units fails; and a control unit, which is connected to the voltage acquisition unit and the fault detection unit and is configured to control closing or opening of three switch devices according to voltage input format, voltage connection mode and detection result of the fault detection unit, so as to switch circuit and working mode, making a charger suitable for applications in multiple scenarios and multiple formats.

Rectification control system, charger and control method for charger

A method for regulating a quantity of a condensing medium according to change in air temperature at an outlet of a barrel of the dryer comprises the following steps: Step 1, Starting drying, detecting an air temperature at the outlet of a barrel of a dryer, and determining that the air temperature at the outlet of the barrel reaches a set temperature; Step 2, calculating the time value from the start of drying to the temperature at the outlet of the barrel reaching the set temperature; Step 3, determining the supplying tempo of the condensing medium at least according to the time value calculated in step 2; and Step 4, supplying the condensing medium with the supplying tempo of the condensing medium determined in step 3.

Method for regulating quantity of condensing medium according to change in air temperature at outlet of barrel of dryer

A control system and control method for a phase shifted full bridge charger, wherein, the control system comprising a sampling system and a charger controller, the charger controller comprises a start and running determination unit, a soft start control unit, a running control unit and a smooth switchover control unit; the running control unit comprises a mode determination unit, a constant-voltage control unit, a total-current-limiting control unit and a charging-current-limiting control unit. During the operation of the charger, after soft start ends, switching occurs between a constant-voltage running state, a total-current-current-limiting running state and a charging-current-limiting running state according to differences in conditions, and the smooth switchover control unit enables the controller to switch between the operation states according to differences charger operation states to realize smooth switching within the charger control method and have high steady-state performance and dynamic performance.

Control system and control method for a phase shifted full bidge charger

Disclosed is a dryer or a washer dryer, including at least a clothes drying system, where the clothes drying system includes a heating structure and a condensing structure; the condensing structure is arranged on a lower part of the dryer or the washer dryer; the condensing structure includes an air inlet and an air outlet for hot air, and further includes a gas inlet and a gas outlet for cold air, and a heat exchanger is arranged inside the condensing structure; the heat exchanger is composed of fins which are superposed in a longitudinal-transverse alternating manner, and a frame with an enclosure structure is arranged outside the heat exchanger.

Dryer or washer dryer

A system and a method for parallel power supply control for auxiliary converters of a motor train unit in the presence of interconnecting lines. The system comprises multiple three-phase inverter modules. The multiple three-phase inverter modules are in parallel connection with each other. Any two-phase circuit of a three-phase inverter module is separately in parallel connection with a corresponding two-phase circuit of a three-phase inverter module adjacent to the three-phase inverter module by using a connecting line module. The connecting line module is connected to a control system. The three-phase inverter modules are also connected to the control system. The three-phase lines of the three-phase inverter modules are all provided with switches. Less interconnecting lines are used, and any two phases of the three-phase inverter modules are separately in parallel connection, and therefore, stable power supply is achieved by balancing currents of any two phases of the three-phase circuits, and the system reliability is improved.

System and method for parallel power supply control for auxiliary converters of motor train unit in presence of interconnecting lines

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Qingdao, China

Lijun Zhang