A power converter system includes a printed circuit board having a first connector for receiving low voltage control signals and a second connector for receiving input voltages from one or more power generators and transmitting output voltages to a power distribution unit. Power devices are mounted onto the printed circuit board to manage the input voltages and to generate the output voltages. An enclosure is mounted around the printed circuit board and power devices. The power devices engage interior surfaces of the enclosure forming a conductive heat path between the power devices, the interior surfaces, and exterior surfaces of the enclosure. The heat path conductively transfers heat from the power devices to the exterior surfaces.

A temperature control system (300) for a variable frequency drive (10, 100) includes a sealed enclosure (310), a power electronic component (330) and/or a power magnetic component (320) positioned inside the sealed enclosure (310), and a controller (400) configured to control a temperature of the power electronic component (330) and/or the power magnetic component (320) relative to an internal air temperature (Tair) inside the sealed enclosure (310) prior to an electrical energy application and operation of the power electronic component (320) and/or power magnetic component (320) to prevent condensation induced electrical failure of the power electronic component (330) and/or power magnetic component (320) utilizing a cooling system (340) and/or a heating system (350).

A method includes attaching a power electronic substrate to a bottom of a frame. The frame has a box-like rectangular shape with an open top and an open bottom. The method further includes disposing an external conductive terminal on the frame. The external conductive terminal has at least one terminal stub that extends on to the front surface of the power electronic substrate. The method further includes welding the at least one terminal stub to at least one circuit trace disposed on the front surface of the power electronic substrate.

A cooling system and a wind-driven generator system. The cooling system comprising: a first cooling loop, a second cooling loop, a third cooling loop, a first heat exchanger and a second heat exchanger, wherein the first cooling loop comprises a first fluid pipeline and a first pump set; the second cooling loop comprises a second fluid pipeline and a second pump set, and the second fluid pipeline comprises a main path and a bypass; the third cooling loop comprises a third fluid pipeline and a third pump set, and the third fluid pipeline communicates with both the first heat exchanger and the second heat exchanger; the first heat exchanger is configured to thermally couple the first cooling medium, the second cooling medium and the third cooling medium to one another; the second heat exchanger is configured to thermally couple the second cooling medium to the third cooling medium.

A fan control circuit for controlling at least one fan of a power supply device includes a load sensing unit, a temperature sensing unit, a control unit connected to the load sensing unit, the temperature sensing unit and the fan, and a mode switching unit. The load sensing unit generates a load signal according to an output condition of the power supply device. The temperature sensing unit senses the temperature in the power supply device and generates a temperature signal. The control unit comprises a low-speed operating mode for controlling the fan according to the load signal, a mute mode for controlling the fan according to the temperature signal, and a full-speed operating mode for controlling the fan to run in a rated rotational speed. The mode switching unit controls the control unit to adjust the rotational speed of the fan by one of the three modes.

A power supply control apparatus controls a temperature of a device having a cooling mechanism and a heat generating component. The power supply control apparatus includes a nonvolatile storage unit that stores information indicating a specific characteristic including a thermal resistance and a thermal capacity of the device for each current of the heat generating component, a current measurement unit configured to measure a current flowing through the heat generating component, a temperature measuring unit configured to measure a current temperature of the heat generating component, and a control unit configured to perform cooling control on the device. The control unit estimates a temperature rise value after a certain delay time based on the current, the temperature, and the information on the specific characteristic, and performs the cooling control on the device based on an estimated temperature after the delay time.

Disclosed is a cooling system for cooling an electric drive system. The electric drive system includes a motor and an inverter configured to drive the motor. The cooling system includes a first cooler, a second cooler, a circulating flow passage and a pump. The first cooler is configured to cool the motor by heat exchange using a coolant flowing through the first cooler. The second cooler is configured to cool the inverter by heat exchange using the coolant flowing through the second cooler. The circulating flow passage passes through both the first and second coolers, and the coolant circulates in the circulating flow passage. The pump is arranged in the circulating flow passage to pump the coolant.

A battery charger includes a housing having support structure for simultaneously supporting at least two batteries of different types for charging including a first battery of a first type and a second batter of a second type. The battery charger further includes charger electronics supported by the housing and operable to output charging current to charge the first battery and charging current to charge the second battery. A fan is operable to cause air flow through the housing. A fan speed of the fan is adjustable based on a temperature of the battery charger (i) while at least one of the at least two batteries is coupled to the battery charger for charging and (ii) while no batteries are coupled to the battery charger for charging.

Thermal monitoring and analysis of conditions in a power electronic system include sensing of thermal parameters of interest, such as temperature and humidity in an enclosure housing power electronic components. The components are cooled by a liquid coolant flow from a chiller through chiller plates associated with the power electronic components. Air is circulated through the enclosure for heat rejection from the chiller plates. Based on the sensed parameters, factors such as relative humidity and dew point of the cooling air may be computed and evaluated to determine the potential for condensation. Alarms, notices, or recommendations may be output for regulation of the chiller to avoid condensation. The system may also provide for evaluation of installation errors, and degradation of performance over time.

The power controller apparatus includes a plurality of parts including a heat member and a heat dissipation member. The power controller apparatus includes a housing for accommodating these plurality of parts. The power controller apparatus includes a snap fit and a thermal conductive member. The snap fit connects the heat member and the heat dissipation member. The thermal conductive member is arranged between the heat member and the heat dissipation member. The thermal conductive member includes a filler having anisotropy with respect to thermal conductivity. The filler is oriented so as to exhibit high thermal conductivity in a stacking direction between the heat member and the heat dissipation member.