CN-224218225-U - Dual-motor and inverter device for outputting three groups of equal power

CN224218225UCN 224218225 UCN224218225 UCN 224218225UCN-224218225-U

Abstract

The utility model provides a double motor for outputting three groups of equal power, which comprises a first permanent magnet generator and a second permanent magnet generator which are fixed on an input end and an output end of an engine crankshaft in a one-to-one correspondence manner, wherein the number of branches of the generator in the first permanent magnet generator and the second permanent magnet generator is 3N, N is a positive integer, three-phase windings of 2N branches in the first permanent magnet generator are in one-to-one correspondence and overlapped to output to obtain a first group of output power, three-phase windings of the remaining N branches in the first permanent magnet generator and three-phase windings of N branches in the second permanent magnet generator are in one-to-one correspondence and overlapped to output to obtain a second group of output power, three-phase windings of the remaining 2N branches in the third permanent magnet generator are in one-to-one correspondence and overlapped to output to obtain a third group of output power, and the three groups of output powers are equal. The utility model also provides an inverter device for outputting three groups of equal-power double motors. According to the utility model, the generators are connected to the input and output ends of the engine crankshaft, so that the crankshaft is balanced, and the service life and reliability of the crankshaft are improved.

Inventors

HE LIN
QIU YONGDONG
CHEN BIN
HUANG KAIHE
LIU ZHONGGUO

Assignees

重庆力华自动化技术有限责任公司

Dates

Publication Date: 20260508
Application Date: 20250208

Claims (4)

1. The double-motor is characterized by comprising a first permanent magnet generator and a second permanent magnet generator, wherein the first permanent magnet generator and the second permanent magnet generator are fixed on an input end and an output end of an engine crankshaft in a one-to-one correspondence mode, the number of branches of the generators in the first permanent magnet generator and the second permanent magnet generator is 3N, N is a positive integer, each branch comprises U, V, W three-phase windings, U, V, W three-phase windings of 2N branches in the first permanent magnet generator are in one-to-one correspondence and are overlapped and output to obtain a first group of output power, U, V, W three-phase windings of the remaining N branches in the first permanent magnet generator are in one-to-one correspondence and are overlapped and output to obtain a second group of output power, U, V, W three-phase windings of the remaining 2N branches in the second permanent magnet generator are overlapped and output to obtain a third group of output power, and the first group of output power, the second group of output power and the third group of output power are equal.
2. The dual motor outputting three sets of equal power according to claim 1, wherein N = 1.
3. An inverter device for outputting three groups of equal-power double motors and a three-phase inverter, which is characterized by comprising the three groups of equal-power double motors and the three-phase inverter according to claim 1 or 2, wherein the three-phase inverter comprises a first processing unit for rectifying and inverting a first group of output power to output first-phase power, a second processing unit for rectifying and inverting a second group of output power to output second-phase power, and a third processing unit for rectifying and inverting a third group of output power to output third-phase power, and the first-phase power, the second-phase power and the third-phase power are equal.
4. The inverter apparatus for outputting three sets of equal power twin motors according to claim 3, wherein the first processing unit, the second processing unit and the third processing unit comprise an AC-DC rectifying unit adapted for rectifying processing and a DC-AC inverting unit adapted for inverting processing.

Description

Dual-motor and inverter device for outputting three groups of equal power Technical Field The utility model relates to the technical field of generators, in particular to a double-motor and inverter device for outputting three groups of equal power. Background The generator has wide application in industrial and agricultural production, national defense, science and technology and daily life, and has a plurality of forms, but the working principle is based on the law of electromagnetic induction and the law of electromagnetic force. Therefore, the general principle of construction is to construct a magnetic circuit and a circuit which mutually perform electromagnetic induction by using proper magnetic conduction and electric conduction materials so as to generate electromagnetic power and achieve the purpose of energy conversion. The engine crankshaft in the current market is connected with the generator rotor through a spline on a rotor bracket, and is directly connected with a spline of the crankshaft and fixed through a clamp spring. However, the inventor of the present application has found through research that the existing engine is only connected with a generator at the input end or the output end of the crankshaft, and this structure can make the input end and the output end of the crankshaft unbalanced, and when the generator is running, one end of the crankshaft connected with the generator can vibrate along with the generator, which easily causes damage to the crankshaft, and affects the service life and reliability of the crankshaft. Disclosure of utility model Aiming at the technical problems that the prior engine is only connected with a generator at the input end or the output end of a crankshaft, the structure can lead the input end and the output end of the crankshaft to be unbalanced, and when the generator is in operation, one end of the crankshaft connected with the generator can vibrate along with the generator, which easily leads to the damage of the crankshaft and influences the service life and the reliability of the crankshaft, the utility model provides a double motor for outputting three groups of equal power. In order to solve the technical problems, the utility model adopts the following technical scheme: The utility model provides a dual motor of three equi-power of output, includes first permanent magnet generator and second permanent magnet generator, first permanent magnet generator and second permanent magnet generator one-to-one are fixed on the input/output of engine bent axle, the branch road number of generator in first permanent magnet generator and the second permanent magnet generator is 3N, and N is positive integer, all including U, V, W three-phase winding in every branch road, the U, V, W three-phase winding one-to-one stack output of 2N branch roads in the first permanent magnet generator obtains first group output, the U, V, W three-phase winding of remaining N branch roads in the first permanent magnet generator and the U, V, W three-phase winding one-to-one stack output of N branch roads in the second permanent magnet generator obtain second group output, the U, V, W three-phase winding one-to-one stack output of remaining 2N branch roads in the third permanent magnet generator obtains third group output, first group output, second group output and third group output are equal. Further, the n=1. The utility model also provides an inversion device for outputting three groups of equal-power double motors, which comprises the three groups of equal-power double motors and a three-phase inverter, wherein the three-phase inverter comprises a first processing unit for rectifying and inverting the first group of output power to output first-phase power, a second processing unit for rectifying and inverting the second group of output power to output second-phase power, and a third processing unit for rectifying and inverting the third group of output power to output third-phase power, and the first-phase power, the second-phase power and the third-phase power are equal. Further, the first processing unit, the second processing unit and the third processing unit comprise an AC-DC rectifying unit suitable for rectifying processing and a DC-AC inverting unit suitable for inverting processing. Compared with the prior art, the dual-motor and inverter device for outputting three groups of equal power is characterized in that the first permanent magnet generator and the second permanent magnet generator are fixed on the input and output ends of the engine crankshaft in a one-to-one correspondence manner, namely when the first permanent magnet generator is fixed on the input end of the engine crankshaft, the second permanent magnet generator is fixed on the output end of the engine crankshaft in a correspondence manner, and U, V, W three-phase windings of 3N branches of the generators in the first permanent magnet generator and the second permanent magnet generator are corres