A power conversion apparatus includes positive-side and negative-side switching elements, positive-side and negative-side gate drive circuits, and a gate signal controller. The positive-side switching element is disposed between a positive-side direct-current bus and an output node. The negative-side switching element is disposed between a negative-side direct-current bus and the output node. The positive-side and negative-side gate drive circuit are configured to turn on and off the positive-side and negative-side switching elements, respectively. The gate signal controller is configured to transmit to the positive-side and negative-side gate drive circuits gate signals to instruct turning on and off the positive-side and negative-side switching elements. The gate signal controller is configured to, when a short circuit between the positive-side direct-current bus and the negative-side direct-current bus is detected, transmit to the positive-side gate drive circuit a first gate signal and transmit to the negative-side gate drive circuit a second gate signal.

A power conversion apparatus includes positive-side and negative-side switching elements, positive-side and negative-side gate drive circuits, and a gate signal controller. The positive-side switching element is disposed between a positive-side direct-current bus and an output node. The negative-side switching element is disposed between a negative-side direct-current bus and the output node. The positive-side and negative-side gate drive circuit are configured to turn on and off the positive-side and negative-side switching elements, respectively. The gate signal controller is configured to transmit to the positive-side and negative-side gate drive circuits gate signals to instruct turning on and off the positive-side and negative-side switching elements. The gate signal controller is configured to, when a short circuit between the positive-side direct-current bus and the negative-side direct-current bus is detected, transmit to the positive-side gate drive circuit a first gate signal and transmit to the negative-side gate drive circuit a second gate signal.

An efficient solution to the problem of converting alternating signals into a plurality of signals having different signal characteristics in observation of different application requirements. This is achieved by a multiple input multiple output converter operated at a secondary side of an inductive power transfer system for converting at least one alternating input signal into a rectified alternating input signal and a further signal derived by averaging a switched voltage generated during rectification of the alternating input signal. The multiple input multiple output converter comprises at least one rectifier circuit adapted to rectify the alternating input signal and at least one averaging circuit adapted to average the switched voltage which is generated during rectification operation of the eat least one alternating input signal.

An efficient solution to the problem of converting alternating signals into a plurality of signals having different signal characteristics in observation of different application requirements. This is achieved by a multiple input multiple output converter operated at a secondary side of an inductive power transfer system for converting at least one alternating input signal into a rectified alternating input signal and a further signal derived by averaging a switched voltage generated during rectification of the alternating input signal. The multiple input multiple output converter comprises at least one rectifier circuit adapted to rectify the alternating input signal and at least one averaging circuit adapted to average the switched voltage which is generated during rectification operation of the eat least one alternating input signal.

A power conversion system including a first converter configured to convert an input voltage into a plurality of discrete voltages. A second converter configured to convert the plurality of discrete voltages into a plurality of modulated voltages. Each modulated voltage of the plurality of modulated voltages comprises two voltage levels equal, respectively, to two of the discrete voltages of the plurality of discrete voltages. A selection unit configured to alternatively output each modulated voltage of the plurality of modulated voltages across a pair of output terminals.

A power conversion apparatus includes positive-side and negative-side switching elements, positive-side and negative-side gate drive circuits, and a gate signal controller. The positive-side switching element is disposed between a positive-side direct-current bus and an output node. The negative-side switching element is disposed between a negative-side direct-current bus and the output node. The positive-side and negative-side gate drive circuit are configured to turn on and off the positive-side and negative-side switching elements, respectively. The gate signal controller is configured to transmit to the positive-side and negative-side gate drive circuits gate signals to instruct turning on and off the positive-side and negative-side switching elements. The gate signal controller is configured to, when a short circuit between the positive-side direct-current bus and the negative-side direct-current bus is detected, transmit to the positive-side gate drive circuit a first gate signal and transmit to the negative-side gate drive circuit a second gate signal.

A power conversion apparatus includes positive-side and negative-side switching elements, positive-side and negative-side gate drive circuits, and a gate signal controller. The positive-side switching element is disposed between a positive-side direct-current bus and an output node. The negative-side switching element is disposed between a negative-side direct-current bus and the output node. The positive-side and negative-side gate drive circuit are configured to turn on and off the positive-side and negative-side switching elements, respectively. The gate signal controller is configured to transmit to the positive-side and negative-side gate drive circuits gate signals to instruct turning on and off the positive-side and negative-side switching elements. The gate signal controller is configured to, when a short circuit between the positive-side direct-current bus and the negative-side direct-current bus is detected, transmit to the positive-side gate drive circuit a first gate signal and transmit to the negative-side gate drive circuit a second gate signal.

A power conversion system includes a first converter configured to convert an input voltage into discrete voltage levels, and provide each discrete voltage level at a corresponding output terminal. The power conversion system further includes a second converter configured to convert the voltages into modulated voltages. The power conversion system further includes a selection unit configured to alternatively output each of the modulated voltages across a pair of output terminals.

A power conversion system includes a first converter configured to convert an input voltage into discrete voltage levels, and provide each discrete voltage level at a corresponding output terminal. The power conversion system further includes a second converter configured to convert the voltages into modulated voltages. The power conversion system further includes a selection unit configured to alternatively output each of the modulated voltages across a pair of output terminals.

When a voltage application command is outputted to a three-phase winding of one system, a d-axis proportionality constant and a q-axis proportionality constant are set with Ld and Lq, respectively, as parameters; when voltage application commands are outputted to three-phase windings of two systems, a d-axis proportionality constant and a q-axis proportionality constant are set with [Ld+Md] and [Lq+Mq], respectively, as parameters.