Series-parallel speed regulation circuit
A technology of speed regulation and circuit, which is applied in the direction of electrical components, AC motor control, control system, etc., can solve the problems of high cost and poor speed stability of speed regulation circuit, and achieve the effect of low cost, good reliability and simple structure
Active Publication Date: 2017-08-22
陈秀清
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Problems solved by technology
[0002] The existing AC motor speed regulation method adopts frequency conversion circuit speed regulation, and the rotation speed of the motor is adjusted through the frequency converter. The cost of using frequency conversion speed regulation is relatively high; discrete components can also be used to form a speed regulation circuit. poor speed stability
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[0012] Such as figure 1 As shown, a series-parallel speed control circuit is characterized in that it includes a motor 1, a power supply live wire terminal 2, a power supply neutral wire terminal 3, a multi-speed speed control switch 4, and a double-pole double-throw switch 5. The motor 1 includes a first A main winding 11, a second main winding 12, and an auxiliary winding 13. One end of the first main winding 11 is connected to the neutral terminal 3 of the power supply, and the other end of the first main winding 11 is connected to the first end of the double-pole double-throw switch 5. One end of the second main winding 12 is connected to the second moving contact of the double pole double throw switch 5, the other end of the second main winding 12 is connected to one end of the auxiliary winding 13, and the other end of the auxiliary winding 13 One end is connected to the neutral terminal 3 of the power supply through a capacitor; the secondary winding 13 is sequentially ...
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The invention discloses a series-parallel speed regulation circuit. The series-parallel speed regulation circuit comprises a motor, a power supply live line end, a power supply null line end, a multi-shift speed regulation switch and a double-pole-double-thrown switch, wherein the motor comprises a first main winding, a second main winding and a secondary winding, one end of the first main winding is connected with the power supply null line end, the other end of the first main winding is connected with a first movable contact of the double-pole-double-thrown switch, one end of the second main winding is connected with a second movable contact of the double-pole-double-thrown switch, the other end of the second main winding is connected with one end of the secondary winding, the other end of the secondary winding is connected with the power supply null line end by a capacitor, a multi-shift static switching contact of a multi-shaft speed regulation switch is sequentially connected onto the secondary winding, a movable switching contact of the multi-shift speed regulation switch is connected with the power supply live line end, a first-shift static switch contact of the multi-shaft speed regulation switch is connected with a first static contact of the double-pole-double-thrown switch, and a third static contact of the double-pole-double-thrown switch is connected with the power supply null line end. The series-parallel speed regulation circuit is simple in structure, good in reliability, relatively low in cost and large in speed regulation range, and is convenient to use.
Description
technical field [0001] The invention relates to the technical field of motor control, in particular to a series-parallel speed regulating circuit. Background technique [0002] The existing AC motor speed regulation method adopts frequency conversion circuit speed regulation, and the rotation speed of the motor is adjusted through the frequency converter. The cost of using frequency conversion speed regulation is relatively high; discrete components can also be used to form a speed regulation circuit. Poor speed stability. Contents of the invention [0003] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a series-parallel speed regulating circuit to solve the deficiencies of the prior art. [0004] In order to achieve the above object, the present invention provides a series-parallel speed regulating circuit, which is characterized in that it includes a motor, a live wire terminal of a powe...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H02P25/18
CPCH02P25/188
Inventor 陈秀清
Owner 陈秀清