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control device of Power converter

A technology of power converters and control devices, applied in electromechanical devices, control systems, motor control, etc., can solve problems such as excessive power generation

Active Publication Date: 2019-06-25
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] If there is a sudden load change such as the cable connecting the generator motor and the battery detaching during power generation, the generated power may temporarily become too large and a high voltage may be generated at the input and output terminals of the generator motor. The situation of load dump surge (Load Dump Surge)

Method used

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  • control device of Power converter
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  • control device of Power converter

Examples

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Embodiment approach 1

[0033] figure 1 It is an explanatory diagram showing a vehicle system equipped with the generator motor according to Embodiment 1 of the present invention, and the configuration of the generator motor. figure 1 Among them, the generator motor 1 is connected to the internal combustion engine 3 via a power transmission unit 4 such as a conveyor belt, for example. Furthermore, the generator motor 1 includes a B terminal as a high potential side input and output terminal, and an E terminal as a low potential side input and output terminal. The B terminal is connected to the + side terminal of the battery 2 , and the E terminal is connected to the − side terminal of the battery 2 .

[0034] The generator motor 1 is composed of a power converter 11 and a rotating electrical machine 12 . The power converter 11 is configured to include: an excitation power conversion unit 112; an armature power conversion unit 113; a control device 111 corresponding to a controller for controlling t...

Embodiment approach 2

[0056] In this embodiment 2, use Figure 7 A specific example in which the detection method of the generated current and the control method at the time of detection are different from those of the first embodiment will be described.

[0057] Figure 7 It is a figure which shows the internal structure of the control apparatus 111 in Embodiment 2 of this invention. Figure 7 The illustrated control device 111 is configured to include a B-terminal voltage detection unit 401 , a negative-side arm short-circuit control unit 406 , a gate driver 407 , a phase voltage detection unit 701 , and a power generation state determination unit 702 .

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Abstract

The present invention provides a control device capable of preventing a battery mounted on a vehicle from reaching an overvoltage condition based on a generated current generated when a field windingtype rotor having a magnet is in a non-excited state and rotating at a high speed, and limiting the efficiency of power generation and drive operations to a minimum. Comparing a generated current value and a current threshold of a rotating electrical machine in a non-excited state of the rotor, multi-phase short-circuit both the first armature winding and the second armature winding in a case thatthe generated current value is greater than a power generation threshold, any one of the first armature winding and the second armature winding is in a multi-phase short-circuit state when the generated current value is less than the current threshold and greater than 0, and the first armature winding and the second armature winding are restored from the multi-phase short-circuit state to the normal state in the case that the generated current does not flow.

Description

technical field [0001] The present invention relates to a control device for a power converter built in a generator motor that operates as an electric motor during engine start and torque assist and operates as a generator after engine start. Background technique [0002] The control device of the power converter built in the generator motor is connected between the rotating electric machine, the battery, and the electric load of the vehicle. In addition, the control device of the power converter rectifies the AC power output from the rotary electric machine to convert it into DC power, and supplies the converted DC power to the battery and the electric load of the vehicle. [0003] In recent years, higher demands have been placed on increasing the output current during power generation and the output torque during driving. As a technology capable of responding to such a request, a rotating electrical machine in which permanent magnets are provided between claw-shaped pole ...

Claims

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Application Information

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IPC IPC(8): H02P9/30
CPCH02K19/24H02P9/30H02P29/032H02K11/215H02K1/246H02P2101/45
Inventor 吉冈伸晃秋田健一田畑充规
Owner MITSUBISHI ELECTRIC CORP