Abstract:
A method for checking an out-of-step of a synchronous motor includes detecting three-phase currents of the synchronous motor; determining whether a relationship between the three-phase currents satisfies a preset requirement; and if no, determining that the synchronous motor is out of step. It is determined that the synchronous motor is out of step when amplitudes of each current of the three-phase currents are not equal or when the phase difference between the three-phase currents is not 120°.
Abstract:
A method for checking an out-of-step of a synchronous motor includes: detecting electric degrees of the synchronous motor, in which the electric degrees comprise at least a first electric degree and a second electric degree detected at a preset interval, and the second electric degree is detected after the first electric degree; comparing the first electric degree with the second electric degree to obtain a comparing result; and determining that the synchronous motor is out of step when the comparing result satisfies a preset requirement. It is determined that the synchronous motor is out of step when the electric degree keeps unchanged or decreases progressively, or an increment of the electric degree is very small.
Abstract:
A solar battery assembly is provided. The solar battery assembly comprises a light-transmitting upper covering plate, a carrier (4), and a plurality of solar cells (3) disposed between the light-transmitting upper covering plate and the carrier (4). The solar cells (3) are connected in series, in parallel, or in a series-parallel connection via positive connection points (41) and negative connection points (42). Direct connections of positive lead-out electrodes (32) and negative lead-out electrodes (33) to the carrier (4) simplify the manufacturing process. The electrical connections are stable. Further, as the assembly can have an adjustable voltage, the maintenance is improved.
Abstract:
A backplane for a solar battery and a solar battery comprising the same are provided. The backplane comprises a metal substrate (2), and an organic insulating layer (1) formed onto at least one surface of the metal substrate (2). The organic insulating layer (1) is made from a resin selected from a group consisting of phenolic resin, epoxy resin, amino resin, and combination thereof.
Abstract:
A method for forming a solar battery assembly is provided, comprising the following steps: a) performing cold vacuuming at a temperature below about 0~50℃ and hot vacuuming at a temperature of about 50~200℃ to a glass plate, a plurality of solar cells (1) and a back sheet laminated in turn and adhered together; and b) treating the laminated glass plate, the plurality of solar cells (1) and the back sheet obtained in step (a) with a temperature of about 100~200℃ and a pressure of about 0.5~1.5MPa to obtain the solar battery assembly. A solar battery assembly is also provided.
Abstract:
A method for checking an out-of-step of a synchronous motor includes detecting three-phase currents of the synchronous motor; determining whether a relationship between the three-phase currents satisfies a preset requirement; and if no, determining that the synchronous motor is out of step. It is determined that the synchronous motor is out of step when amplitudes of each current of the three-phase currents are not equal or when the phase difference between the three-phase currents is not 120°.
Abstract:
A method for forming a solar battery assembly is provided, comprising: a) performing cold vacuuming at a temperature ranging from about 0° C. to about 50° C. and hot vacuuming at a temperature ranging from about 50° C. to about 200° C. to a glass plate, a plurality of solar cells and a back sheet that are laminated in turn and adhered together; and b) treating the laminated glass plate, plurality of solar cells and back sheet obtained in step (a) at a temperature ranging from about 100° C. to about 200° C. and a pressure ranging from about 0.5 MPa to about 1.5 MPa to obtain the solar battery assembly. A solar battery assembly is also provided.
Abstract:
A solar battery assembly is provided. The solar battery assembly comprises a light-transmitting upper covering plate, a carrier (4), and a plurality of solar cells (3) disposed between the light-transmitting upper covering plate and the carrier (4). The solar cells (3) are connected in series, in parallel, or in a series-parallel connection via positive connection points (41) and negative connection points (42). Direct connections of positive lead-out electrodes (32) and negative lead-out electrodes (33) to the carrier (4) simplify the manufacturing process. The electrical connections are stable. Further, as the assembly can have an adjustable voltage, the maintenance is improved.