Phase current detector
A detection device and phase current technology, applied in the direction of output power conversion device, electrical components, AC power input conversion to DC power output, etc., can solve problems such as abnormal noise, reduced operating range, and difficulty in reducing ringing, etc., to achieve reduction Effects of measurement error, improvement of current detection accuracy, and improvement of current measurement accuracy
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Embodiment Construction
[0098] Embodiments of the phase current detection device of the present invention will be described in detail below with reference to the accompanying drawings.
[0099] FIG. 1 is a diagram showing the configuration of a motor drive device using an inverter. Table 1 shows the relationship between the output voltage vector of the inverter (power device) and the switching state of the switching element.
[0100] Table 1
[0101] T u +
T v +
T w +
V0
V1
V2
V3
V4
V5
V6
V7
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
[0102] Among them, T u + , T v + , T w + represent the switching elements of the upper bridge arms of the u-phase, v-phase, and w-phase respectively, T u - , T v - , T ...
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Description
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Application Information
- IPC
- H02M7/5387; H02M7/5395
- Inventors
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