Two-phase variable frequency power source and output method thereof

A technology of two-phase frequency conversion and output method, which is applied in the direction of converting AC power input into AC power output and output power conversion devices, electrical components, etc., can solve the problems of unstable operation, poor reliability, complex structure, etc., and achieve stable operation. , high reliability, the effect of solving the dead zone problem

Inactive Publication Date: 2012-07-18
穆星宇
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It has complex structure, unstable operation, poor reliability and high cost

Method used

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  • Two-phase variable frequency power source and output method thereof
  • Two-phase variable frequency power source and output method thereof
  • Two-phase variable frequency power source and output method thereof

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Embodiment Construction

[0024] Such as figure 1 , figure 2 As shown, a two-phase variable frequency power supply includes power input terminals L1 and L2, and a power supply circuit 1. The output terminals of the power supply circuit 1 are respectively connected with H-bridge inverter circuit I, H-bridge inverter circuit II and adjustable output frequency The control unit 2, in this embodiment, the control unit 2 adopts a single-chip microcomputer, which is actually not limited by this embodiment, and the control unit 2 is provided with A and B two-way pulse signal output terminals and C, D two-way electronic commutation signal control terminals, The two pulse signal output ends of A and B respectively pass through the electronic commutator 3 controlled by the two electronic commutation signal control terminals C and D, and the power devices in the H-bridge inverter circuit I and the H-bridge inverter circuit II. Q1~Q4 and the power devices Q5~Q8 in the H-bridge inverter circuit II are connected to...

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Abstract

The invention relates to a two-phase variable frequency power source and an output method of the two-phase variable frequency power source. The two-phase variable frequency power source comprises power supply input ends L1 and L2 and a power supply circuit. The two-phase variable frequency power source is characterized in that an H bridge inverter circuit I, an H bridge inverter circuit II and a control unit are respectively connected at the power supply input ends; the control unit is provided with pulse signal output ends A and B; pulse signals A and B that are adjustable in frequency are output by the control unit, and the half-wave diagonal drive of the H bridge inverter circuits I and II is realized under the action of an electronic reversing signal controlled by the control unit; the pulse signals A and B are same, but the pulse signal B lags behind the pulse signal A by 0-180 degrees in time sequence. The H bridge inverter circuits I and II work independently and a two-phase variable frequency power source signal is output at the output ends of the inverter circuit I and the H bridge inverter circuit II. The two-phase variable frequency power source has the advantages of simplicity in structure, stability in operation, high reliability and low cost, and can meet demands of industrial and civil occasions.

Description

technical field [0001] The invention relates to a two-phase variable frequency power supply and an output method thereof. Background technique [0002] In some industrial equipment and household appliances, "single-phase AC induction motors" are often equipped. Due to differences in application categories, it can be divided into split-phase motors, capacitor-started motors, etc. Widely used in refrigerators, washing machines, air conditioners and other household appliances. It is also widely used in packaging, food, textile, printing, postal, medical and various mechanical devices. [0003] "Single-phase AC induction motor" has a main winding and an auxiliary winding (starting winding) on ​​the winding. The two windings are separated by a large phase angle, so that the current and flux in the secondary winding reach their maximum value earlier than the main winding, thus generating a magnetic flux that rotates around the stator. This rotating magnetic flux cuts the condu...

Claims

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Application Information

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IPC IPC(8): H02M5/458H02P25/04H02P27/08
Inventor 穆星宇
Owner 穆星宇
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