The two schemes have been applied and improved in the experimental prototype.

该方案已在原理样机研制中得到验证和完善.

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An experimental prototype which employed - digital four - step commutation strategy is established to further verify the mentioned method.

最后采用全数字化四步电压换流策略的实验电路进一步验证新方案的可行性.

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Testing equipment, experimental prototype of a wide range of clients in raw material for the test.

检验设备齐全, 备有多种试验样机供客户带料试验.

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